Carrier 50TCA04-A07 User Manual

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50TCA04---A07 Nominal 3 to 6 Tons Wit h Pu r on® (R410A) Refrigerant

Service and Maintenance Instructions

TABLE OF CONTENTS

SAFETY CONSIDERA TIONS 1....................

UNIT ARRANGEMENT AND ACCESS 2...........

SUPPLY FAN (BLOWER) SECTION 3..............

COOLING 5....................................

PURONR (R--410A) REFRIGERANT 7..............

COOLING CHARGING CHARTS 9.................

CONVENIENCE OUTLETS 13....................

SMOKE DETECTORS 13.........................

DETECTOR CLEANING 18.......................

INDICATORS 19................................

TROUBLESHOOTING 20.........................

PROTECTIVE DEVICES 20.......................

ELECTRIC HEATERS 21.........................

PREMIERLINKT CONTROL 23...................

ECONOMIZER SYSTEMS 32.....................

FASTENER TORQUE VALUES 50.................

WIRING DIAGRAMS 50.........................

APPENDIX I. MODEL NUMBER SIGNIFICANCE 52.

APPENDIX II. PHYSICAL DATA 53................

APPENDIX III. FAN PERFORMANCE 54...........

APPENDIX IV. ELECTRICAL DATA 63.............

APPENDIX V. WIRING DIAGRAM LIST 69.........

APPENDIX VI. MOTORMASTER SENSOR

LOCATIONS 70.................................

UNIT START-UP CHECKLIST 73..................

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment. Untra ined personnel can perform the basic maintenance functions of replacing filters. Trained service personnel should perform all other operations.

When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply. Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements.

Recognize safety information. This is the safety--alert symbol

instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

. When you see this symbol on the unit and in

WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock and rota ting equipment could cause injury.

WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

Units with convenience outlet circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open it. Tag--out this switch, if necessary.

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

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Puron (R--410A) refrigerant systems operate at higher pressures than standard R--22 systems. Do not use R--22 service equipment or components on Puron refrigerant equipment.

UNIT ARRANGEMENT AND ACCESS

General

Fig. 1 and 2 show general unit arrangement and access locations.

FILTER ACCESS PANEL

Routine Maintenance

These items should be part of a routine maintenance program, t o be checked every month or two, until a specific schedule for each can be identified for this installation:

Quarterly Inspection (and 30 days after initi al

start)

S Return air filter replacement

S Outdoor hood inlet filters cleaned

S Belt tension checked

S Belt condition checked

S Pulley alignment checked

S Fan shaft bearing locking collar tightness checked

S Condenser coil cleanliness checked

S Condensate drain checked

Seasonal Maintenance

These items should be checked at the beginning of each season (or more often if local conditions and usage patterns dictate):

Conditioning

Air

S Condenser fan motor mounting bolts tightness

S Compressor mounting bolts

S Condenser fan blade positioning

S Control box cleanliness and wiring condition

S Wire terminal tightness

S Refrigerant charge level

COMPRESSOR ACCESS PANEL

OUTDOOR-AIR OPENING AND INDOOR COIL ACCESS PANEL

Fig. 1 -- Typical Access Panel Locations

BLOWER ACCESS PANEL

Fig. 2 -- Blower Access Panel Location

C06023

C07081

S Evaporator coil cleaning

S Evaporator blower motor a mperage

Heating

S Power wire connections

S Fuses ready

S Manual--reset limit switch is closed

Economizer or Outside Air

Damper

S Inlet filters condition

S Check damper travel (economizer)

S Check gear and dampers for debris and dirt

Air Filters and Scr

eens

Each unit is equipped with return air filters. If the unit has an economizer, it will also have an outside air screen. If a manual outside air damper is added, an inlet air screen will also be present.

Each of these filters and screens will need to be periodically replaced or cleaned.

Return Air

Filters

Return air filters are disposable fiberglass media type. Access to the filters is through the small lift--out panel

located on the rear side of the unit, above the

evaporator/return air access panel. (See Fig. 1.)

To remove the filters:

1. Grasp the bottom flange of t he upper panel.

2. Lift up and swing the bottom out until the panel disengages and pulls out.

3. Reach inside and extract the filters from the filter rack.

4. Replace these filters as required with similar replacement filters of same size.

To re--install the access panel:

1. Slide the top of the panel up under the unit top panel.

2. Slide the bottom into the side channels.

3. Push the bottom flange down until it contacts the top of the lower panel (or economizer top).

IMPORTANT: DO NOT OPERATE THE UNIT WITHOUT THESE FILTERS!

Outside Air

Hood

Outside air hood inlet screens are permanent aluminum-- mesh type filters. Check these for cleanliness. Remove the screens when cleaning is required. Clean by washing with hot low--pressure water and soft detergent and replace all screens before restarting the unit. Observe the flow direction arrows on the side of each filter frame.

C07156

Fig. 4 -- Screens Installed on Outdoor--Air Hood

(Sizes 7--1/2 to 12--1/2 Tons Shown)

To remove the screen, loosen the screws in the top retainer and slip the retainer up until the filter can be removed. Re--install by placing the frame in its track, rotating the retainer back down and tighten all screws.

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Economizer Inlet Air Screen

This air screen is retained by spring c lips under the top edge of the hood. (See Fig. 3.)

17 1/4”

DIVIDER

OUTSIDE AIR

HOOD

CLEANABLE

BAROMETRIC RELIEF

ALUMINUM FILTER

FILTER

FILTE CLIP

C06027

Fig. 3 -- Filter Installation

To remove the filter, open the spring clips. Re--install the filter by placing the frame in its track, then closing the spring clips.

Manual Outside Air Hood Screen

This inlet screen is secured by a retainer angle across the top edge of the hood. (See Fig. 4.)

C07087

Fig. 5 -- Belt Drive Motor Mounting

SUPPLY F AN (BLOWER) SECTION

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Before performing service or maintenance operations on the fan system, shut off all unit power and tag--out the unit disconnect switch. Do not reach into the fan section with power still applied to unit.

Supply Fan (Belt--Drive)

The supply fan system consists of a forward--curved centrifugal blower wheel on a solid shaft with two concentric type bearings, one on each side of the blower housing. A fixed--pitch driven pulley is attached to the fan shaft and an adjustable--pitch driver pulley is on the motor. The pulleys are connected using a “V” type belt. (See Fig. 5.)

Belt

Check the belt condition and tension quarterly. Inspect the belt for signs of cracking, fraying or glazing along the

inside surfaces. Check belt tension by using a spring--force tool (such as Browning’s Part Number “Belt Tension Checker” or equivalent tool); tension should be 6--lbs at a 5/8--in. deflection when measured at the centerline of the belt span. This point is at the center of the belt when measuring the dista nce between the motor shaft and the blower shaft.

NOTE: Without the spring--tension tool, place a straight edge across the belt surface at the pulleys, then de f lect the belt at m id--span using one finger to a 1/2--in. deflection.

Adjust belt tension by loosening the motor mounting plate front bolts and rear bolt and sliding the plate toward the fan (to reduce tension) or away from fan (to increase tension). Ensure the blower shaft and the motor shaft are parallel to each other (pulleys aligned). Tighten all bolts when finished.

To replace the belt:

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1. Use a belt with same section type or similar size. Do not substitute a “FHP” type belt. When installing the new belt, do not use a tool (screwdriver or pry--bar) to force the belt over the pulley flanges, this will stress the belt and cause a reduction in belt life.

2. Loose n the motor mounting plate front bolts and rear bolts.

3. Push the motor and its mounting plate towards the blower housing as close as possible to reduce the center distance between fan shaft and motor shaft.

4. Re move the belt by gently lifting the old belt over one of the pulleys.

5. Install the new belt by gently sliding the belt over both pulleys and then sliding the motor and plate away from the fa n housing until prope r tension is achieved.

6. Check the alignment of the pulleys, adjust if necessary.

7. Tighte n all bolts.

8. Check the t ension after a few hours of runtime and re--adjust as required.

Adjustable--Pitch Pulley on

Motor

The motor pulley is an adjustable--pitch type that allows a servicer to implement changes in the fan wheel speed to match as--installed ductwork systems. The pulley consists of a fixed flange side that faces the motor (secured to the motor shaft) and a movable flange side that can be rotated around the fixed flange side that increases or reduces the pitch diameter of this driver pulley. (See Fig. 6.)

To change fan speed:

1. Shut off unit power supply.

2. Loose n belt by loosening fan motor mounting nuts. (See Fig. 5.)

3. Loose n movable pulley flange setscrew. (See Fig. 6.)

4. Screw movable flange toward fixed flange to increase speed and away from fixed flange to decrease speed. Increasing fan speed increases load on motor. Do not exceed maximum speed specified.

5. Set movable flange at nearest keyway of pulley hub and tighten setscrew to torque specifications.

To align fan and motor pulleys:

1. Loosen fan pulley setscrews.

2. Slide fan pulley along fan shaft. Make angular alignment by loosening motor from mounting.

3. Tighten fan pulley setscrews and motor mounting bolts to torque specifications.

4. Re check belt tension.

C07075

Fig. 6 -- Supply--Fan Pulley Adjustment

Bearings

This fan system uses bearings featuring concentric split locking collars. The collars are tightened through a cap screw bridging the split portion of the collar. The cap screw has a Torx T25 socket head. To tighten the locking collar: Hold the locking collar tightly against the inner race of the bearing and torque the cap screw to 65--70 in--lb (7.4--7.9 Nm). See Fig. 7.

As the pitch diameter is changed by adjusting the position of the movable flange, the centerline on this pulley shifts laterally (along the motor shaft). This creates a requirement for a realignment of the pulleys a fter any adjustment of the movable flange. Also reset the belt tension after each realignment.

Check the condition of the motor pulley for signs of wear. Glazing of the belt contact surfaces and erosion on these surfaces are signs of improper belt tension and/or belt slippage. Pulley replacement may be necessary.

C08121

Fig. 7 -- Tightening Locking Collar

Motor

When replacing the motor, also replace the external--tooth lock washer (star washer) under the motor mounting base; this is part of the motor grounding system. Ensure the teeth on the lock washer are in contact with the motor ’s painted base. Tighten motor mounting bolts to 120 +/ -- 12 in--lbs.

Changing fan wheel speed by changing pulleys: The horsepower rating of the belt is primarily dic tated by the pitch diameter of the smaller pulley in the drive system (typically the motor pulley in these units). Do not install a replacement motor pulley with a smaller pitch diameter than provided on the original factory pulley. Change fan wheel speed by changing the fan pulley (larger pitch diameter to reduce wheel speed, smaller pitch diameter to increase wheel speed) or select a new system (both pulleys and matching belt(s)).

Before changing pulleys to increase fan wheel speed, check the fan performance at the target speed and airflow rate to dete rmine new motor loading (bhp). Use the fan performance tables or use the Packaged Rooftop Builder software program. Confirm that the motor in this unit is capable of operating a t the new operating condition. Fan shaft loading increases dramatically as wheel speed is increased.

To reduce vibration, replace the motor’s adjustable pitch pulley with a fixed pitch pulley (after the final airflow balance adjustment). This will reduce the amount of vibration generated by the motor/belt--drive system.

COOLING

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

This system uses PuronR refrigerant which has higher pressures than R--22 and other refrigerants. No other refrigerant may be used in this system. Gauge set, hoses, and recovery system m ust be designed to handle Puron refrigerant. If unsure about equipment, consult the equipment manufacturer.

Condenser Coil

The condenser coil is fabricated with round tube copper hairpins and plate fins of various materials and/or coatings (see Model Number Format in the Appendix to identify the materials provided in this unit). The coil may be one--row or composite--type two--row. Composite two--row coils are two single--row coils fabricated with a single return bend end tubesheet.

Condenser Coil Maintenance and Cleaning Recommendation

Routine cleaning of coil surfaces is essential to maintain proper operation of the unit. Elimination of contamination and removal of harmful residues will greatly increase the

life of the coil and extend the life of the unit. The following maintenance and cleaning procedures are recommended as part of the routine maintenance activities to extend the life of the coil.

Remove Surface Loaded

Surface loaded fibers or dirt should be removed with a vacuum cleaner. If a vacuum cleaner is not available, a soft non--metallic bristle brush may be used. In either case, the tool should be applie d in the direction of the fins. Coil surfaces can be easily damaged (fin edges can be easily bent over and damage to the coating of a protected coil) if the tool is applied across the fins.

NOTE: Use of a water stream, such as a garden hose, against a surface loaded coil will drive the fibers and dirt into the coil. This will make cleaning efforts more difficult. Surface loaded fibers must be completely removed prior to using low velocity clean water rinse.

Periodic Clean Water

A periodic clean water rinse is very beneficial for coils that are applied in coastal or industrial environments. However, it is very important that the water rinse is made with a very low velocity water stream to avoid damaging the fin edges. Monthly cleaning as described below is recommended.

Routine Cleaning of Coil

Periodic cleaning with TotalineR environmentally sound coil cleaner is essential to extend the life of coils. This cleaner is available from Carrier Replacement Components Division as part number P902--0301 for a one gallon container, and part number P902--0305 for a 5 gallon container. It is recommended that all coils, including standard a luminum, pre--coated, copper/copper or E--coated coils be cleaned with the Totaline environmentally sound coil cleaner as describe d below. Coil cleaning should be part of the unit’s regularly scheduled maintenance procedures to ensure long life of the coil. Failure to clean the coils may result in reduced durability in the environment.

Avoid use of:

S coil brighteners

S acid cleaning prior to painting

S hi gh pressure washers

S poor quality water for cleaning

Totaline environmenta lly sound coil cleane r is nonflammable, hypo allergenic, non bacteri al, and a USDA accepted biodegradable agent that will not harm the coil or surrounding components such as electrical wiring, painted metal surfaces, or insulation. Use of non--recomm ended coil cleaners is strongly discouraged since coil and unit durability could be affected.

One--Row Coil

Wash coil with commercial coil cleaner. It is not necessary to remove top panel.

Fibers

Rinse

Surfaces

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Two--Row Coils

Clean coil as follows:

1. Turn off unit power, tag disconnect.

2. Re move top panel screws on condenser end of unit.

3. Re move condenser coil corner post. See Fig. 8. To hold top panel open, place coil corner post between top panel and center post. See Fig. 9.

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Fig. 8 -- Cleaning Condenser Coil

C08205

6. Use a water hose or other suitable equipment to flush down between the 2 coil sections to remove dirt and debris. Clean the outer surfaces with a stiff brush in the normal manner.

7. Secure inner and outer coil rows together with a field--supplied fastener.

8. Reposition the outer coil section and remove the coil corner post from between the top panel and center post. Reinstall the coil corner post and replace all screws.

Totaline Environmentally Sound Coil Cleaner Application Equipment

S 2--1/2 gallon garden sprayer

S Water rinse with low velocity spray nozzle

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in accelerated corrosion of unit parts.

Harsh chemicals, household bleach or acid or basic cleaners should not be used to clean outdoor or indoor coils of any kind. These cleaners can be very difficult to rinse out of the coil and can accelerate corrosion at the fin/tube interface where dissimilar materials are in contact. If there is dirt below the surface of the coil, use the Totaline e nvironmentally sound coil cleaner.

C08206

Fig. 9 -- Propping Up T op Panel

4. Remove screws securing coil to compressor plate and compressor access panel.

5. Re move fastener holding coil sections together at return end of condenser coil. Carefully separate the outer coil section 3 to 4 in. from the inner coil section. See Fig. 10.

C08207

Fig. 10 -- Separating Coil Sections

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in reduced unit performance or unit shutdown.

High velocity water from a pressure washer, garden hose, or compressed air should never be used to clean a coil. The force of the water or air jet will bend the fin edges and increase airside pressure drop.

Totaline Environmentally Sound Coil Cleaner Application Instructions

1. Proper eye protection such as safety glasses is recommended during mixing and application.

2. Remove all surface loaded fibers and dirt with a vacuum cleaner as described above.

3. Thoroughly wet finned surfaces with clean water and a low velocity garden hose, being careful not t o bend fins.

4. Mix Totaline environmentally sound coil cleaner in a 2--1/2 gallon garden sprayer according to the instructions included with the cleaner. The optimum solution temperature is 100_F.

NOTE: Do NOT USE water in excess of 130_F, a s t he enzymatic activity will be destroyed.

5. Thoroughly apply Totaline environmentally sound coil cleaner solution to all coil surfaces including finned area, tube sheets and coil headers.

6. Hold garden sprayer nozzle close to finned areas and apply cleaner with a vertical, up--and--down mot ion. Avoid spraying in horizontal pattern to minimize potential for fin damage.

7. Ensure cleaner thoroughly penetrates deep into finned areas.

8. Interior and exterior finned areas must be thoroughly cleaned.

9. Finned surfaces should remain wet with cleaning solution for 10 minutes.

10. Ensure surfaces are not allowed to dry before rinsing. Reapplying cleaner as needed to ensure 10--minute saturation is achieved.

11. Thoroughly rinse all surfaces with low velocity clean water using downward rinsing motion of water spray nozzle. Protect fins from damage from the spray nozzle.

Evaporator Coil

Cleaning the Evaporator Coil

1. Turn unit power off. Install lockout tag. Remove evaporator coil access panel.

2. If economizer or two--position damper is installed, remove economizer by disconnecting Molex plug and removing mounting screws.

3. Slide filters out of unit.

4. Clean coil using a commercial coil cleaner or dishwasher detergent in a pressurized spray canister. Wash both sides of coil and flush with clean water. For best results, back--flush toward return--air section to remove foreign material. Flush condensate pan after completion.

5. Reinstall economizer and filters.

6. Re connect wiring.

7. Replace access panels.

Evaporator Coil M etering

The metering devices are multiple fixed--bore devices (Acutrolt) wedged into the horizontal outlet tubes from the liquid header, located at the entrance to each evaporator coil circuit path. These are non--adjustable. Service requires replacing the entire liquid header assembly.

To check for possible blockage of one or more of these metering devices, disconnect the supply fan contactor (IFC) coil, then start the compressor and observe the frosting pattern on the face of the evaporator coil. A frost pattern should develop uniformly across the face of the coil starting at each horizontal header tube. Failure to develop frost at an outle t tube can indicate a plugged or a missing orifice.

Devices

Refrigerant System Pressure Access Ports

There are two access ports in the system -- on the suction tube near the compressor and on the discharge tube near the compressor. These are brass fittings with black plastic caps. The hose connection fittings are standard 1/4 SAE Male Flare couplings.

The brass fittings are two--piece High Flow valves, with a receptacle base brazed to the tubing and an integral spring--closed check valve core screwed into the base. (See Fig. 11.) This check valve is permanently assembled into this core body and cannot be serviced separately; replace the entire core body if necessary. Service tools are available from RCD that allow the replacement of the check valve core without having to re cover the entire system refrigerant charge. Apply compressor refrigera nt oil to the check valve core’s bottom o--ring. Install the fitting body with 96 +/ --10 in -- lbs of t orque; do not overtighten.

PURONR (R--410A) REFRIGERANT

This unit is designed for use with Puron (R--410A) refrigerant. Do not use any other refrigerant in this system.

Puron (R--410A) is provided in pink (rose) colored cylinders. These cylinders are available with and without dip tubes; cylinders wit h dip tubes will have a label indicating this feature. For a cylinder with a dip tube, place the cylinder in the upright position (access valve at the top) when removing liquid refrigerant for charging. For a cylinder without a dip tube, invert the cylinder (access valve on the bottom) when removing liquid refrigerant.

Because Puron (R--410A) is a blend, it is strongly recommended t hat refrigerant always be removed from the cylinder as a liquid. Admit liquid refrigerant into the system in the discharge line. If adding refrigerant into the suction line, use a commercial metering/expansion device at the gauge manifold; remove liquid from the cylinder, pass it t hrough the metering device at the gauge set and then pass it into the suction line as a vapor. Do not remove Puron (R--410A) from the cylinder as a vapor.

Refrigerant Charge

Amount of refrigerant charge is listed on the unit’s nameplate. Refer to Carrier GTAC2--5 Charging, Recovery, Recycling and Reclamation training manual and the following procedures.

Unit panels must be in place when unit is operating during the charging procedure.

Charge

Use standard evacuating techniques. After evacuating system, weigh in the specified amount of refrigerant.

Low--Charge

Using Cooling Charging Charts, Fig. 12, vary refrigerant until the conditions of the appropriate chart are met. Note the charging charts are different from type normally used. Charts are based on charging the units to the correct superheat for t he various operating conditions. Accurate pressure gauge and temperature sensing device are required. Connect the pressure gauge to the service port on the suction line. Mount t he temperature sensing de vice on the suction line and insulate it so that outdoor ambient temperature does not affect the reading. Indoor--ai r cfm must be within the normal operating range of the unit.

Cooling

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To Use Cooling Charging Charts

Take the outdoor ambient temperature and read the suction pressure gauge. Refer to chart to determine what suction temperature should be. If suction temperature is high, add refrigerant. If suction temperature is low, carefully recover some of the charge. Recheck the suction pressure as charge is adjusted.

1/2-20 UNF RH

EXAMPLE:

Model 50TC*A06

Outdoor Temperature 85_F(29_C)..................

Suction Pressure 130 psig (896 kPa).................

Suction Temperature should be 63_F (17.2_C).........

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5/8” HEX

.47

SEAT

0.596

WASHER

O-RING

This surface provides a metal to metal seal when torqued into the seat. Appropriate handling is required to not scratch or dent the surface.

Fig. 11 -- CoreMax Access Port Assembly

1/2" HEX

CORE

DEPRESSOR PER ARI 720 +.01/-.035 FROM FACE OF BODY

7/16-20 UNF RH

C07150

COOLING CHARGING CHARTS

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C08203

Fig. 12 -- Cooling Charging Charts

C08204

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COOLING CHARGING CHARTS (cont)

C08228

Fig. 12 -- Cooling Charging Charts (cont.)

C08229

Compressor

Lubrication

The compressor is charged with t he correct amount of oil at the factory.

CAUTION

UNIT DAMAGE HAZARD

Failure to follow this caution may result in damage to components.

The compressor is in a PuronR refrigerant system and uses a polyolester (POE) oil. This oil is extremely hygroscopic, meaning it absorbs water readily. POE oils can absorb 15 times as much water as other oils designed for HCFC and CFC refri gerants. Avoid exposure of the oil to the atmosphere.

Replacing Compressor

The compressor used with Puron refrigerant c ontains a POE oil. This oil has a high affinity for moisture. Do not remove the compressor’s tube plugs until ready to insert the unit suction and discharge tube ends.

Compressor mounting bolt torque is 65--75 ft--lbs.

The suction and discharge pressure levels should now move to their normal start--up levels.

NOTE: When the compressor is rotating in the wrong direction, the unit makes an elevated level of noise and does not provide cooling.

Filter Drier

Replace whenever refrigerant system is exposed to atmosphere. Only use factory specified liquid--line filter driers with working pressures no less than 650 psig. Do not install a suction--line filter drier in liquid line. A liquid--line filter drier designed for use with Puron refrigerant is re quired on every unit.

Condenser--Fan Location

See Fig. 13.

1. Shut off unit power supply. Install lockout tag.

2. Remove condenser--fan assembly (grille, motor, and fan).

3. Loosen fan hub setscrews.

4. Adjust fan height as shown in Fig. 13.

5. Tighten setscrews.

6. Re place condenser--fan assembly.

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Compressor

On 3--phase units with scroll compressors, it is important to be certain compressor is rotating in the proper direction. To dete rmine whether or not compressor is rotating in t he proper direction:

1. Conne ct service gauges to suction and discharge pressure fittings.

2. Energize the compressor.

3. The suction pressure should drop and the discharge pressure should rise, as is normal on any start--up.

NOTE: If t he suction pressure does not drop and the discharge pressure does not rise to normal levels:

4. Note that the evaporator fan is probably also rotating in the wrong direction.

5. Turn off power to the unit.

6. Re verse any two of the unit power leads.

7. Re apply power to the compressor.

Rotation

C07091

Fig. 13 -- Condenser Fan Adjustment

(except with Motormaster)

Troubleshooting Cooling System

Refer to Table 1 for additional troubleshooting topics.

Table 1 – Cooling Service Analysis

PROBLEM CAUSE REMEDY

Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.

Compressor and Condenser Fan Will Not Start.

Compressor Will Not Start But Condenser Fan Runs.

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Compressor Cycles (other than normally satisfying thermostat).

Compressor Operates Continuously.

Excessive Head Pressure.

Head Pressure Too Low.

Excessive Suction Pressure.

Suction Pressure Too Low.

Evaporator Fan Will Not Shut Off.

Compressor Makes Excessive Noise.

Defective thermostat, contactor, transformer, or control relay.

Insufficient line voltage. Determine cause and correct. Incorrect or faulty wiring. Check wiring diagram and rewire correctly. Thermostat setting too high. Lower thermostat setting below room temperature. Faulty wiring or loose connections in compres-

sor circuit.

Compressor motor burned out, seized, or internal overload open.

Defective run/start capacitor, overload, start relay.

Onelegofthree---phasepowerdead.

Refrigerant overcharge or undercharge.

Defective compressor. Replace and determine cause. Insufficient line voltage. Determine cause and correct. Blocked condenser. Determine cause and correct. Defective run/start capacitor, overload, or start

relay.

Defective thermostat. Replace thermostat. Faulty condenser--- fan motor or capacitor. Replace. Restriction in refrigerant system. Locate restriction and remove. Dirty air filter. Replace filter. Unit undersized for load. Decrease load or increase unit size. Thermostat set too low. Reset thermostat. Low refrigerant charge. Locate leak; repair and recharge. Leaking valves in compressor. Replace compressor. Air in system. Recover refrigerant, evacuate system, and recharge. Condenser coil dirty or restricted. Clean coil or remove restriction. Dirty air filter. Replace filter. Dirty condenser coil. Clean coil. Refrigerant overcharged. Recover excess refrigerant. Air in system. Recover refrigerant, evacuate system, and recharge. Condenser air restricted or air short --- cycling. Determine cause and correct. Low refrigerant charge. Check for leaks; repair and recharge. Compressor valves leaking. Replace compressor. Restrictioninliquidtube. Remove restriction. High head load. Check for source and eliminate. Compressor valves leaking. Replace compressor. Refrigerant overcharged. Recover excess refrigerant. Dirty air filter. Replace filter. Low refrigerant charge. Check for leaks; repair and recharge. Metering device or low side restricted. Remove source of restriction.

Insufficient evaporator airflow.

Temperature too low in conditioned area. Reset thermostat. Outdoor ambient below 25˚F. Install low---ambient kit.

Time off delay not finished. W a i t f o r 3 0 --- s e con d o f f delay.

Compressor rotating in wrong direction. Reversethe3---phasepowerleads.

Replace component.

Check wiring and repair or replace.

Determine cause. Replace compressor.

Determine cause and replace.

Replace fuse or reset circuit breaker. Determine cause.

Recover refrigerant, evacuate system, and recharge to nameplate.

Determine cause and replace.

Increase air quantity. Check filter and replace if necessary.

CONVENIENCE OUTLETS

WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

Two types of convenience outlets are offered on 50TC models: Non--powered and unit--powered. Both types provide a 125--volt GFCI (ground--fault circuit--interrupter) duplex receptacle rated at 15--A behind a hinged waterproof access cover, located on the end panel of the unit. See Fig. 14.

Pwd-CO Transformer

Conv Outlet GFCI

or HACR switch is open. Other connection methods will result in the convenience outlet circuit being de--energized when the unit disconnect or HACR switch is open. See Fig. 15.

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CO8283

Fig. 15 -- Powered Convenience Outlet Wiring

Pwd-CO Fuse Switch

C08128

Fig. 14 -- Convenience Outlet Location

Non--powered type: This type requires the field

installation of a general--purpose 125--volt 15--A circuit powered from a source elsewhere in the building. Observe national and loca l codes when selecting wire size, fuse or breaker requirements and disconnect switch size and location. Route 125--v power supply conductors into the bottom of the utility box containing the duplex receptacle.

Unit--powered type: A unit--mounted transformer is factory--i nstalled to stepdown the main power supply voltage to the unit to 115--v at the duplex receptacle. This option also includes a manual switch with fuse, located in a utility box and m ounted on a bracket behind the convenience outlet; access is through the unit’s control box access panel. See Fig. 14.

The primary leads to the convenience outlet transformer are not factory--connected. Selection of primary power source is a customer--option. If local codes permit, the transformer primary leads can be connected at the line--side terminals on a unit--mounted non--fused disconnect or HACR breaker switch; this will provide service power to the unit when the unit disconnect switch

Duty Cycle: The unit--powered convenience outlet has a duty cycle limitation. The transformer is intended to provide power on an intermittent basis for service tools, lamps, etc; it is not intended to provide 15 --amps loading for continuous duty loads (such as electric heaters for overnight use). Observe a 50% limit on circuit loading above 8--amps (i.e., limit loads exceeding 8--amps to 30 minutes of operation every hour).

Maintenance: Periodically test the GFCI receptacle by pressing the TEST button on the face of the receptacle. This should cause the internal circuit of the receptacle to trip and open the receptacle. Check for proper grounding wires and power line phasing if the GFCI receptacle does not trip as re quired. Press the RESET button to clear the tripped condition.

Fuse on powered type: The factory fuse is a Bussman “Fusetron” T--15, non-- renewable screw--in (Edison base) type plug fuse.

Using unit--mounted convenience outlets: Units with unit--mounted convenience outlet circuits will often require that two disconnects be opened to de--energize all power to the unit. Treat all units as electrically energized until the convenience outlet power is also checked and de--energization is confirmed. Observe National Electrical Code Article 210, Branch Circuits, for use of c onvenience outlets.

SMOKE DETECTORS

Smoke detectors are available as factory--installed opt ions on 50TC models. Smoke detectors may be specified for Supply Air only or for Return Air without or with economizer or in combination of Supply Air and Return Air. Return Air smoke detectors are arranged for vertical return configurations only. All components necessary for

operation are factory--provided and mounted. The unit is factory-- configured for immediate smoke detector shutdown operation; additional wiring or modifications t o unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements.

System

The smoke detector system consists of a four--wire controller and one or two sensors. Its primary function is to shut down the rooftop unit in order to prevent smoke from circulating throughout the building. It is not to be used as a life saving device.

Controller

The controller (see Fig. 16) includes a controller housing, a printed circuit board, and a clear plastic cover. The controller can be connected to one or two compatible duct

50TC

smoke sensors. The clear plastic cover is secured to the housing with a single captive screw for easy access to the wiring terminals. The controller has three LEDs (for Power, Trouble and Alarm) and a manual test/reset button (on the cover face).

inspections without having to disassemble the sensor. The cover attaches to the sensor housing using four captive screws and forms an airtight chamber around the sensing electronics. Each sensor includes a harness with an RJ45 terminal for connecting to the controller. Each sensor has four LEDs (for Power, Trouble, Alarm and Dirty) and a manual test/reset button (on the left--side of the housing).

Duct smoke sensor

Exhaust tube

See

Detail A

Intake

gasket

Plug

TSD-CO2

(ordering option)

Sampling tube

(ordered separately)

Exhaust gasket

Sensor housing and electronics

Cover gasket

(ordering option)

Sensor cover

Duct smoke sensor

controller

Conduit nuts

(supplie d by installer)

Conduit s upport plate

Controll er housing

and electronics

Conduit c ouplings

(supplie d by installer)

Alarm

Fastener

(2X)

Terminal block cover

Troub le

Power

Tes t / r e s e t switch

Cover gasket

(ordering option)

Controll er cover

C08208

Fig. 16 -- Controller Assembly

Sensor

The sensor (see Fig. 17) includes a plastic housing, a printed circuit board, a clear plastic cover, a sampling tube inlet and an exhaust tube. The sampling tube (when used) and exhaust tube are attached during installation. The sampling tube varies in length depending on the size of the rooftop unit. The clear plastic cover permits visual

Magnetic test/reset

switch

Coupling

Alarm

Troub le

Power Dirty

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Detail A

Fig. 17 -- Smoke Detector Sensor

Air is introduced to the duct smoke detector sensor’s sensing chamber through a sampling tube that extends into the HVAC duct and is directed back into the ventilation system through a (shorter) exhaust tube. The difference in air pressure between the two tubes pulls the sampled air through the sensing chamber. When a sufficient amount of smoke is detected in the sensing chamber, the sensor signals an alarm state and the controller automatically takes the appropriate action to shut down fans and blowers, change over air handling systems, noti fy the fire alarm control panel, etc.

The sensor uses a process called differential sensing to prevent gradual environmental changes from triggering false alarms. A rapid change in environmental c onditions, such as smoke from a fire, causes the sensor to signal an alarm state but dust and debris accumulated over time does not.

For installations using two sensors, the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition.

Smoke Detector Locations

Supply Air — The Supply Air smoke detector sensor is located to the left of the unit’s indoor (supply) fan. See Fig. 18. Access i s through the fan access panel. There is no sampling tube used at this location. The sampling tube inlet exte nds through the side plate of the fan housing (into a high pressure area). The controller is located on a bracket to the right of the return filter, accessed through the lift--off filter panel.

Smoke Detector Sensor

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Fig. 18 -- Typical Supply Air Smoke Detector Sensor

Location

Return Air without Economize r — The sampling tube is located across the return air opening on the unit basepan. See Fig. 19. The holes in the sampling tube fa ce downward, into the return air stream. The sampling tube is connected via tubing to the return a ir sensor that is mounted on a bracket high on the partition between return filter and controller location. (This sensor is shipped in a flat--mounting location. Installation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected. See installation steps below.)

Return Air Detector module (shipping position shown)*

Return Air with Economizer — The sampling tube is inserted through the side plates of the economizer housing, placing it across the return air opening on the unit basepan. See Fig. 20. The holes in the sampling tube face downward, into the return air stream. The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location. (This sensor is shipped in a flat--mounting location. Installation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected. See installation steps below.)

50TC

Return Air Sampling Tube

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Fig. 20 -- Return Air Sampling Tube Location

Completing Installation of Return Air Smoke Sensor:

Screws

Flexible Exhaust Tubes

Controller module

Return Air Detector Sampling Tube

*RA detector must be moved from shipping position to operating position by installer

C07307

Fig. 19 -- Typical Return Air Detector Location

Sample Tube

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Fig. 21 -- Return Air Detector Shipping Position

1. Unscrew the two screws holding the Return Air Sensor detector plate. See Fig 21. Save the screws.

2. Re move the Return Air Sensor and its detector plate.

3. Rotate the detector plate so the sensor is facing outwards and the sampling tube connection is on the bottom. See Fig 22.

4. Screw the sensor and det ector plate into its operating position using screws from Step 1. Make sure the sampling tube connection is on the bottom and the exhaust tube is on the top. See Fig 22.

5. Conne ct the flexible tube on the sam pling inlet t o the sampling tube on the basepan.

6. For units with an economizer, the sampling tube is integrated into the economizer housing but the connection of the flexible tubing to the sampling tube is the same.

50TC

Fig. 22 -- Return Air Sensor Operating Position

FIOP Smoke Detector Wiring and Response

All units: FIOP smoke detector is configured to automatically shut down all unit operations when smoke condition is detected. See Fig. 23, Smoke Detector Wiring.

Highlight A: JMP 3 is fac tory--cut, transferring unit control to smoke detector.

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Highlight B: Smoke detector NC contact set will open on smoke al arm condition, de--energizing the ORN conductor.

Highlight C: 24--v power signal via ORN lead is removed at Smoke Detector input on LCTB; all unit operations cease immediately.

PremierLink Control: Unit operating functions (fan, cooling and heating) are terminated as described above. In addition:

Highlight D: On smoke alarm condition, the smoke detector NO Alarm contact will close, supplying 24--v power to GRA conductor.

Highlight E: GRA lead at Smoke Alarm input on LCTB provides 24--v signal. This signal is conveyed to PremierLink FIOP’s TB1 at terminal TB1--6 (BLU lead). This signal initiates the FSD sequence by the PremierLink control.

Using Remote Logic: Five conductors are provided for field use (see Highlight F) for additional annunciation functions.

Additional Application Data — Refer to Catalog No. HKRNKA--1XA for discussions on additional control features of these smoke detectors including multiple unit coordination. See Fig. 23.

Fig. 23 -- Typical Smoke Detector System Wiring

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Sensor and Controller Tests

Sensor Alarm Test

The sensor alarm test checks a sensor’s ability to signal an alarm state. This test requires that you use a field provided SD-- MAG test magnet.

CAUTION

OPERATIONAL TEST HAZARD

Failure to follow t his caution may result in personnel and authority concern.

This test places the duct detector into the alarm state. Unless part of the test, disconnect all auxiliary equipment from the controller before performing the test. If the duct detector is connected to a fire alarm system, notify the proper authorities before performing the test.

Sensor Alarm Test Procedure

1. Hold the test magnet where indicated on the side of the sensor housing for seven seconds.

2. Verify that the sensor’s Alarm LED turns on.

3. Re set the sensor by holding the test magnet against the sensor housing for two seconds.

4. Verify that the sensor’s Alarm LED turns off.

CAUTION

OPERATIONAL TEST HAZARD

Failure to follow t his caution may result in personnel and authority concern.

Pressing the controller’s test/re set switch for longer than seven seconds will put the duct detector into the alarm state and activate all automatic alarm responses.

Dirty Controller Test Procedure

1. Press the controller’s test/reset switch for two seconds.

2. Verify that the controller’s Trouble LED flashes.

Dirty Sensor Test

The dirty sensor test provides an indication of the sensor’s ability to compensate for gradual environmental changes. A sensor that can no longer compensate for environmental changes is considered 100% dirty and requires cleaning or replacing. You must use a field provided SD--MAG test magnet to initiate a sensor dirty test. The sensor’s Dirty LED indicates the results of the dirty test as shown in Table 2.

CAUTION

50TC

Controller Alarm Test

The controller alarm test checks the controller ’s ability to initiate and indicate an alarm state.

CAUTION

OPERATIONAL TEST HAZARD

Failure to follow t his caution may result in personnel and authority concern.

This test places the duct detector into the alarm state. Disconnect all auxiliary equipment from the controller before performing the test. If the duct detector is connected to a fire alarm system, notify the proper authorities before performing the test.

Controller Alarm Test Procedure

1. Press the controller’s test/reset switch for seven seconds.

2. Verify that the controller’s Alarm LED turns on.

3. Re set the sensor by pressing the test/reset switch for two seconds.

4. Verify that the controller’s Alarm LED turns off.

Dirty Controller Test

The dirty controller test checks the controller ’s ability to initiate a dirty sensor test and indicate its results.

OPERATIONAL TEST HAZARD

Failure to follow t his caution may result in personnel and authority concern.

Holding the test magnet agai nst the sensor housing for more than seven seconds will put the duct detector into the alarm state and activate all automatic alarm responses.

Tabl e 2 – Di r ty L ED Te st

FLASHES DESCRIPTION

1 0---25% dirty. (Typical of a newly installed detector)

2 25---50% dirty

3 51---75% dirty

4 76---99% dirty

Dirty Sensor Test Procedure

1. Hold the test magnet where indicated on the side of the sensor housing for two seconds.

2. Verify that the sensor’s Dirty LED flashes.

CAUTION

OPERATIONAL TEST HAZARD

Failure to follow t his caution may result in personnel and authority concern.

Changing the dirty sensor test operation will put the detector into the alarm state and activate all automatic alarm responses. Before changing dirty sensor test operation, disconnect all auxiliary equipment from the controller and notify the proper authorities if connected to a fire alarm system.

Changing the Dirt Sensor Test

By default, sensor dirty test results are indicated by:

S The sensor’s Dirty LED flashing. S The controller’s Trouble LED flashing. S The controller’s supervision re lay contacts toggle.

The operation of a sensor’s dirty test can be changed so that the controller ’s supervision relay is not used to indicate test results. When two detectors a re connected to a controller, sensor dirty test operation on both sensors must be configured to operate in the same manner.

To Configure the Dirty Sensor Test

Operation

1. Hold the test magnet where indicated on the side of the sensor housing until the sensor’s Alarm LED turns on and its Dirty LED flashes twice (approximat ely 60 seconds).

2. Re set t he sensor by removing the test magnet then

50TC

holding it against the sensor housing again until the sensor’s Alarm LED turns off (approximately 2 seconds).

Remote Station Test

The remote station a larm test checks a test/reset station’s ability to initiate and indicate an alarm state.

upe

contacts [3]

ire must be

added by installer

ision relay

TB3

Smoke Detector Controller

−

18 Vdc ( )

−

Auxiliary

equipment

SD-TRK4

Trouble

ower

Alarm

Reset/Test

Fig. 24 -- Remote Test/Reset Station Connections

CAUTION

C08247

CAUTION

OPERATIONAL TEST HAZARD

Failure to follow t his caution may result in personnel and authority concern.

SD--TRK4 Remote Alarm Test Procedure

1. Turn the key switch to the RESET/TEST position for seven seconds.

2. Verify that the test/reset station’s Alarm LED turns on.

3. Re set the sensor by turning the key switch to the RESET/TEST position for two seconds.

4. Verify that the test/reset station’s Alarm LED turns off.

Remote Test/Reset Station Dirty Sensor Test

The test/reset station dirty sensor test checks the test/reset station’s ability to initiate a sensor dirty test and indicate the results. It must be wired to the controller as shown in Fig. 24 and configured to operate the controller’s supervision relay. For more information, see “Changing sensor dirty test operation.”

OPERATIONAL TEST HAZARD

Failure to follow t his caution may result in personnel and authority concern.

If the test/reset station’s key switch is left in the RESET/TEST position for l onger than seven seconds, the detector will automatically go into the alarm state and activate all automatic alarm responses.

CAUTION

OPERATIONAL TEST HAZARD

Failure to follow t his caution may result in personnel and authority concern.

Holding the test magnet to the target area for longer than seven seconds will put the detector into the alarm state and activate all automatic alarm responses.

Dirty Sensor Test Using an SD--TRK4

1. Turn the key switch to the RESET/TEST position for two seconds.

2. Verify that t he test/rese t station’s Trouble LED flashes.

DETECTOR CLEANING

Cleaning the Smoke Detector

Clean the duct smoke sensor when the Dirty LED is flashing continuously or sooner i f conditions warrant.

Table 3 – Detector Indicators

CONTROL OR INDICATOR DESCRIPTION

Magnetic test/reset switch Resets the sensor when it is in the alarm or trouble state. Activates or tests the sensor when it is in

Alarm LED Indicates the sensor is in the alarm state.

Troubl e LED Indicates the sensor is in the trouble state.

Dirty LED Indicates the amount of environmental compensation used by the sensor

Power LED Indicates the sensor is energized.

the normal state.

(flashing continuously = 100%)

CAUTION

OPERATIONAL TEST HAZARD

Failure to follow t his caution may result in personnel and authority concern.

If the smoke detector is connected to a fire alarm system, first notify the proper authorities that the detector is undergoing maintenance then disable the relevant circuit to avoid generating a false alarm.

1. Disconnect power from the duct detector then remove the sensor’s cover. (See Fig. 25.)

2. Using a vacuum cleaner, clean compressed air, or a soft bristle brush, remove loose dirt and debris from inside the sensor housing and cover. Use isopropyl alcohol and a l int--free cloth to remove dirt and other contaminants from the gasket on the sensor’s cover.

3. Squeeze the retainer clips on both sides of the optic housing then lift the housing away from the printed circuit board.

4. Gently remove dirt and debris from around the optic plate and inside the optic housing.

5. Re place the optic housing and sensor cover.

6. Conne ct power to the duct detector then perform a sensor alarm test.

Sampling

tube

Airow

HVAC duct

Sensor housing

Optic plate

Retainer clip

Optic housing

C07305

Fig. 25 -- Sensor Cleaning Diagram

INDICATORS

Normal State

The smoke detector operates in the norm al state in the absence of any trouble conditions and when its sensing chamber is free of smoke. In the normal state, the Power LED on both the sensor and the controll er are on and all other LEDs are off.

Alarm State

The smoke detector enters the alarm state when the amount of smoke particulat e in the sensor’s sensing chamber exceeds the alarm threshold value. (See Table 3.) Upon entering the alarm state:

S The sensor’s Alarm LED and the controller’s Alarm LED

turn on.

S The contacts on the controller ’s two auxiliary relays

switch positions.

S The contacts on the controller’s alarm initiation relay

close.

S The controller’s remote alarm LED output is activated

(turned on).

S The controller ’s high impedance multiple fan shutdown

control line is pulled to ground Trouble state.

The SuperDuct duct smoke detector enters the trouble state under the following conditions:

S A sensor’s cover is removed and 20 minut es pass before

it is properly secured.

S A sensor’s environmental compensation limit is reached

(100% dirty).

S A wiring fault between a sensor and the controller is

detected.

An internal sensor fault is detected upon entering the trouble state:

S The contacts on the controller’s supervisory relay switch

positions. (See Fig. 26.)

S If a sensor trouble, the sensor ’s Trouble LED the

controller’s Trouble LED turn on.

S If 100% dirty, the sensor’s Dirty LE D turns on a nd the

controller’s Trouble LED flashes continuously.

50TC

S If a wiring fault between a sensor and the controller, the

controller’s Trouble LED turns on but not the sensor’s.

Alarm

Fig. 26 -- Controller Assembly

NOTE: All troubles are latched by the duct smoke

detector. The trouble condition must be cleared and then the duct smoke detector must be reset in order to restore it

50TC

to the normal state.

Resetting Alarm and Trouble Condition Trips:

Manual reset is required to restore smoke detector systems to Normal operation. For installations using two sensors, the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition. Check each sensor for Alarm or Trouble status (indicated by LED). Clear the condition that has generated the trip at this sensor. Then reset the sensor by pressing and holdi ng the reset button (on the side) for 2 seconds. Verify that the sensor’s Alarm and Trouble LEDs are now off. At the controller, clear its Alarm or Trouble state by pressing and holding the manual reset button (on the front cover) for 2 seconds. Verify that the controller’s Alarm and Trouble LEDs are now off. Replace all panels.

Tro uble

Power

Test/reset switch

C07298

2. Check the wiring between the sensor and the controller. If wiring is loose or missing, repair or replace as required.

Controller’s Power LED is Off

1. Make sure the circuit supplying power to the controller is operational. If not, make sure JP2 and JP3 are set correctly on the controller before applying power.

2. Verify that power is applied to the controller’s supply input terminals. If power is not present, replace or repair wiring as required.

Remote Test/Reset Station’s Trouble LED Does Not flash When Performing a Dirty Test, But the Controller’s Trouble LED Does

1. Verify that the remote test/station is wired as shown in Fig. 23. Repair or replace loose or missing wiring.

2. Configure the sensor dirty te st to activate the controller’s supervision relay. See “Changing sensor dirty test operation.”

Sensor’s Trouble LED is On, But the Controller’s Trouble LED is OFF

Remove JP1 on the controller.

PROTECTIVE DEVICES

Compressor Protection

Overcurrent

The compressor has internal linebreak motor protection.

Overtemperatur

The compressor has an internal protector to protect it against excessively high discharge gas temperatures.

TROUBLESHOOTING

Controller’s Trouble LED is On

1. Check the Trouble LED on each sensor connected to the controller. If a sensor’s Trouble LED is on, determine the cause and make the necessary repairs.

2. Check the wiring between the sensor and the controller. If wiring is loose or missing, repair or replace as required.

Controller’s Trouble LED is Flashing

1. One or both of the sensors is 100% dirty.

2. Determine which Dirty LED is flashing then clean that sensor assembly as described in the detector cleaning section.

Sensor’s Trouble LED is On

1. Check the sensor’s Dirty LED. If it is flashing, the sensor is dirty and must be cleaned.

2. Che ck the sensor’s cover. If it is loose or missing, secure the cover to the sensor housing.

3. Re place sensor assembly.

Sensor’s Power LED is Off

1. Che ck the controller’s Power LED. If it is off, determine why the controller does not ha ve power and make the necessary repairs.

High Pressure

Switch

The system is provided with a high pressure switch mounted on the discharge line. The switch is stem--mounted and brazed into the discharge tube. Trip setting is 630 psig +/-- 10 psig (4344 +/-- 69 kPa) when hot. Reset is automatic at 505 psig (3482 kPa).

Low Pressure

Switch

The system is protected against a loss of charge and low evaporator coil loading condition by a low pressure switch located on the suction line near the compressor. The switch is stem--mounted. Trip setting is 54 psig +/-- 5 psig (372 +/-- 34 kPa). Reset is automatic at 117 +/-- 5 psig (807 +/-- 34 kPa).

Evaporator Freeze Pr

otection

The system is protected against evaporator coil frosting and low temperature conditions by a temperature switch mounted on the evaporator coil hairpin. Trip setting is 30_F+/--5_F(--1_C+/--3_C). Reset is automatic at 45_F (7_C).

Supply (Indoor) Fan Motor Protection

Disconnect and lockout power when servicing fan motor.

The standard supply fan motor is equipped with internal overcurrent and overtem perature protection. Protection devices reset automatically.

The High Static option supply fan motor is equipped with a pilot--circuit Thermix combination overtemperature/overcurrent protection device. This device resets automatically. Do not bypass this switch to correct trouble. Determine the cause and correct it.

Condenser Fan Motor Protection

The condenser fan motor is internally protected against overtemperature.

Relief Device

A soft solder joint at the suction service access port provides pressure relief under abnormal temperature and pressure conditions (i.e., fire in building). Protect this joint during brazing operations near this joint.

Control Circuit, 24--V

DISCONNECT MOUNTING LOCATION

MAIN CONTROL BOX

BRACKET AND CONDUIT DRIP BOOT

EMT OR RIGID CONDUIT (FIELD-SUPPLIED)

SINGLE POINT BOX MOUNTING SCREW

CONTROL WIRE TERMINAL BLOCK

SINGLE POINT BOX

HEATER MODULE (LOCATION 1)

CENTER POST

HEATER MODULE (LOCATION 2)

MANUAL RESET LIMIT SWITCH

Fig. 28 -- Typical Component Location

HEATER COVERS

HEATER MOUNTING BRACKET

C08134

The control circuit is protected against overcurrent conditions by a circuit breaker mounted on control transformer TRAN. Reset is manual.

ELECTRIC HEATERS

50TC units may be equipped with field--installed accessory electric heaters. The heaters a re modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, line--break limit switches and a control contactor. One or two heater modules may be used in a unit.

Heater modules are installed in the compartment below the i ndoor (supply) fan outlet. Access is through the indoor access panel. Heater modules slide into the compartment on tracks along the bottom of the heater opening. See Figs 27 -- 29.

DISCONNECT MOUNTING LOCATION

UNIT BLOCK-OFF PAN EL

OUTDOOR ACCESS PANEL

Fig. 27 -- Typical Access Panel Location (3--6 Ton)

INDOOR ACCESS PAN EL

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50TC

TRACK

FLANGE

C08135

Fig. 29 -- Typical Module Installation

Not all available heater modules may be used in every unit. Use only those heater modules that are UL listed for use in a specific size unit. Refer to the label on the unit cabinet re approved heaters.

Unit heaters are marked with Heater Model Numbers. But heaters are ordered as and shipped in cartons marked with a corresponding heater Sales Package part number. See Table 4 for correlation between heater Model Number and Sales Package part number.

NOTE: The value in position 9 of the part number differs between the sales package part number (value is 1) and a bare heater model number (value is 0).

Bare Heater Model

Number

Heater Sales Package PNO Includes: Bare Heater Carton and packing materials Installation sheet

Table 4 – Heater Model Number

C R H E A T E R 0 0 1 A 0 0

C R H E A T E R 1 0 1 A 0 0

Single Point Boxes and Supplementary Fuses — When the unit MOCP device value exceeds 60--A, unit--mounted supplementary fuses are required for each heater circuit. These fuses are included in accessory Single Point Boxes, with power distribution and fuse blocks. The single point box will be installed directly under the unit control box, just to the left of the partition separating the indoor section (with electric heaters) from the outdoor section. The Single Point Box has a hinged access cover. See Fig

30.

50TC

CONTROL BOX

BUSHING

SINGLE POINT BOX MOUNTING SCREWS

DRIP BOOT BRACKET MOUNTING SCREWS

POWER WIRES

FOAM BUSHING

HEATER RELAYS

HEATER MOUNTING SCREWS

A L LIE

P A

O R

P .

M O

L N

O .

ERI

L N

O .

2 2

. 2

ISTED

AIR

NDITIONING

1 2 3

UIP

ACCESS

346N

/ N

5 6

REV

Fig. 30 -- Typical Single Point Installation

On 50TC units, all fuses are 60--A. Single point boxes containing fuses for 208/230--V applications use UL Cl ass RK5 250--V fuses (Bussman FRNR 60 or Shawmut TR 60R). Single point boxes for 460--V and 575--V applications use UL Class T 600--V fuses (Bussman JJS 60 or Shawmut A6T 60). (Note that all heaters are qualified for use with a 60--A fuse, regardless of actual heater ampacity, so only 60--A fuses are necessary.)

Unit heater applications not requiring supplemental fuses do not require a Single Point Box. Connect power supply conductors to heater conductors and field--supplied base unit power tap leads (see text below re: “Completing Heater Installation”) below the unit’s main control box using UL--approved connectors.

Safety Devices — Electric heater applications use a combination of line--break/auto--reset limit switches and a pilot--circuit/manual reset limit switch to protect the unit against over--temperature situations.

Line--break/auto--reset limit switches are mounted on the base plate of each heater module. See Fig. 31. These a re accessed through the indoor access panel. Remove the switch by removing two screws into the base plate and extracting the existing switch.

Pilot-- c ircuit/manual reset limit switch is located in the side plate of the indoor (supply) fan housing. See Fig. 28.

Completing Heater Installation

Field Power Connections — Field--supplied tap

conductors must be insta lled between the base unit’s field power connection lugs and the splice connection between field power supply conductors and the conductors to the electric heater(s). Refer to unit wiring schematic. Use

C08136

copper wire only. Size these conduct ors based on the MCA (Minimum Circuit Ampacity) value marked on the 50TC unit’s info plate for the base unit less electric heater load. Use UL--approved pressure connectors (field--supplied) for these splice joints.

Line-Break Limit Switches

ALLIED P

MODE

NO.

ERIAL

NO.

ISTED

AIR

NDITIONING

ACCESS

/ N

5610-4

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Fig. 31 -- Typical Location of Heater Limit Switches

(3--phase heater shown)

Low--Voltage Control Connections — Pull the

low--voltage control leads from the heater module(s) -VIO and BRN (two of each if two modules are installed; identify for Module #1) -- to the 4--pole terminal board TB4 located on the heater bulkhead to the left of Heater #1. Connect the VIO lead from Heater #1 to terminal TB4--1. Connect the VIO lead from Heater #2 to terminal TB4--2. Connect both BRN leads to terminal TB4--3. See Fig. 32.

LCTB

CONTL BOARD

Field

VIO

ORN

BRN

ORN

TB4

VIO

Connections

Elec Htr

HR2

HR1

BRN

VIO

HR1: On Heater 1 in Position #1 HR2: On Heater 2 in Position #2 (if installed)

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Fig. 32 -- Accessory Electric Heater Control

Connections

Fig. 33 -- PremierLink Controller

50TC

C08199

PREMIERLINKT CONTROL

The PremierLink controller (see Fig. 33) is compatible with Carrier Comfort Networkr (CCN) devices. This control is designed to allow users the access and ability to change factory--defined settings, thus expanding the function of the standard unit control board. CCN service access tools include System Pilot (TM), Touch Pilot (TM) and Service Tool. (Standard tier display tools Navigatort and Scrolling Marquee are not suitable for use with latest PremierLink controller (Version 2.x).)

The PremierLink control is factory--mounted in the 50TC unit’s main control box to the left of the LCTB. Factory wiring is completed through harnesses connected to the LVTB. Field connections are made at a 16--pole terminal block (TB1) located on the bottom shelf of the unit control box in front of the PremierLink controller The factory--i nstalled PremierLink control includes the supply--air temperature (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory Economizer 2 package.

Refer to Fig. 33 for PremierLink connection locations.

NOTE: Refer to Form 33CS--58SI for complete PremierLink configuration, operating sequences and troubleshooting information. Have a copy of this manual available at unit start--up.

The PremierLink controller requires the use of a Carrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock. This is necessary for broadcast of time of day functions (occupied/unoccupied).

NOTE: PremierLink controlle r is shipped in Sensor mode. To be used with a thermostat, the PremierLink controller must be configured to Thermostat mode. Refer to PremierLink Configuration instructions for Operating Mode.

Supply Air Temperature (SAT) Sensor — On FIOP--equipped 50TC unit, the unit is supplied with a supply--air tempe r ature (SAT) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx 6--inches (12.7 mm) in length. It is a nominal 10--k ohm thermistor. See Table 15 for temperature--resistance characteristic.

The SAT is factory--wired. The SAT probe is wire--tied to the supply--air opening (on the horizontal opening end) in its shipping position. Remove the sensor for installati on. Re--position the sensor in the flange of the supply -- a ir opening or in the supply air duct (as required by local codes). Drill or punch a 1/2--in. hol e in the flange or duct. Use two field--supplied, self--drilling screws to secure the sensor probe in a horizontal orientation. See Fig. 36.

SUPPLY AIR TEMPERATURE SENSOR

SUPPLY AIR

RETURN AIR

ROOF CURB

C08200

Fig. 34 -- Typical Mounting Location for Supply Air

Temperature (SAT) Sensor on Small Rooftop Units

50TC

C08249

Fig. 35 -- PremierLink Wiring Schematic

Table 5 – Thermistor Resistance vs Temperature

Values for Space Temperature Sensor, Supply Air

Temperature Sensor, and Outdoor Air Temperature

Sensor

TEMP

(C)

--- 4 0 --- 4 0 335,651

--- 3 5 --- 3 1 242,195

--- 3 0 --- 2 2 176,683

--- 2 5 --- 1 3 130,243

--- 2 0 --- 4 96,974

--- 1 5 5 72,895

--- 1 0 14 55,298

--- 5 23 42,315 0 32 32,651 5 41 25,395

10 50 19,903 15 59 15,714 20 68 12,494 25 77 10,000 30 86 8,056 35 95 6,530 40 104 5,325 45 113 4,367 50 122 3,601 55 131 2,985 60 140 2,487 65 149 2,082 70 158 1,752

TEMP

(F)

RESISTANCE

(Ohms)

NOTE: The sensor must be mounted in the discharge airstream downstream of the cooling coil and any heating devices. Be sure the probe tip does not come in contact with any of the unit’s heater surfaces.

Outdoor Air Temperature (OAT) Sensor — The OAT is factory--m ounted in the Economizer 2 (FIOP or accessory). It is a nominal 10k ohm thermistor attached to an eyelet mounting ring. See Table 5 for temperature-- resistance characteristic.

Field connections — Field connections for accessory sensor and input devices are made at the 16--pole terminal block (TB1) l ocated on the control box bottom shelf in front of the PremierLink control. Some input devices also require a 24--vac signal source; connect at LCTB terminal R at “THERMOSTAT” connection strip for this signal source. See connections figures on following pages for field connection locations (and for continued connections at the PremierLink board inputs).

Table 7 provides a summary of field connections for units equipped with Space Sensor. Table 8 provides a summary of field connections for units equippe d with Space Thermostat.

Space Sensors -- The PremierLink controller is factory--shippe d configured for Space Sensor Mode. A Carrier T--55 or T--56 space sensor must be used. T--55 space temperature sensor provides a signal of space temperature to the PremierLink cont rol. T--56 provides same space temperature signal plus it allows for adjustment of space temperature setpoints from the face of the sensor by the occupants. See Table 5 for temperature versus resistance characteristic on the space sensors.

Connect T --55 -- See Fig. 36 for typical T--55 internal connections. Connect the T--55 SEN terminals to TB1 terminals 1 and 3 (see Fig. 37).

SW1

SEN

RED(+)

WHT(GND)

BLK(-)

BRN (GND)

BLU (SPT)

CCN COM

SENSOR WIRING

50TC

Economizer 2 — The PremierLink control is used with Economizer 2 (option or accessory) for outdoor air management. The damper position is controlled directly by the PremierLink control; Economizer 2 has no internal logic device.

Outdoor air management functions ca n be enhanced with field--installation of these accessory control devices:

Enthalpy control (outdoor air or differentia l sensors) Space CO2 sensor Outdoor air CO2 sensor

Refer to Table 6 for accessory part numbers

Fig. 36 -- T--55 Space Temperature Sensor Wiring

TB1 PL

SEN J6-7

SEN

Fig. 37 -- PremierLink T55 Sensor

C08201

J6-6

C08212

Table 6 – PremierLink Sensor Usage

OUTDOOR AIR

APPLICATION

Differential Dry Bulb

Temp e rat u re w ith

PremierLink (PremierLink

r e q u i r e s 4 --- 2 0 m A

Actuator)

Single Enthalpy with

PremierLink (PremierLink

r e q u i r e s 4 --- 2 0 m A

Actuator)

Differential Enthalpy with

PremierLink (PremierLink

r e q u i r e s 4 --- 2 0 m A

Actuator)

NOTES: CO2 Sensors (Optional): 33ZCSENCO2 --- Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor. 33ZCASPC02 --- Aspirator box used for duct---mounted CO2 room sensor.

50TC

33ZCT55CO2 --- Space temperature and CO2 room sensor with override. 33ZCT56C02 --- Space temperature and CO2 room sensor with override and setpoint.

TEMPERATURE

SENSOR

I n c l u d e d ---

CRTEMPSN001A00

I n c l u d e d ---

Not Used

I n c l u d e d ---

Not Used

RETURN AIR

TEMPERATURE

SENSOR

R e q u i r e d ---

33ZCT55SPT

or equivalent

---

OUTDOOR AIR

ENTHALPY SENSOR

--- ---

R e q u i r e s ---

HH57AC077

or equivalent

R e q u i r e s ---

HH57AC077

or equivalent

RETURN AIR

ENTHALPY SENSOR

---

R e q u i r e s --HH57AC078 or equivalent

Table 7 – Space Sensor Mode

TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL

1 T 5 5 --- S E N / T56 --- S E N Analog (10k thermistor) 2 RMTOCC Discrete, 24VAC 3 T 5 5 --- S E N / T56 --- S E N Analog (10k thermistor) 4 CMPSAFE Discrete, 24VAC 5 T 5 6 --- S E T Analog (10k thermistor) 6 FSD Discrete, 24VAC 7 LOOP--- PWR Analog, 24VDC 8 SPS Discrete, 24VAC

9 I A Q --- S E N An alog, 4 --- 2 0 m A 10 FIL TER Discrete, 24VAC 11 I A Q --- C OM/O A Q --- C O M/RH --- C O M A n a l o g , 4 --- 2 0 m A 12 CCN + (RED) Digital,,5VDC 13 O A Q --- SEN/ R H --- S E N A n a l o g , 4 --- 2 0 m A 14 CCN Gnd (WHT) Digital, 5VDC 15 AUX OUT(Power Exhaust) (Output)Discrete 24V AC 16 CCN --- (BLK) Digital, 5VDC

LEGEND:

T55 --- Space Temperature Sensor T56 --- Space Temperature Sensor CCN --- Carrier Comfort Network (communication bus) CMPSAFE --- Compressor Safety

FILTER --- Dirty Filter Switch F S D --- F i r e S h u t d o w n IAQ --- Indoor Air Quality (CO2) OAQ --- Outdoor Air Quality (CO2) RH --- Relative Humidity

SFS --- Supply F an Status

Table 8 – Thermostat Mode

TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL

1 RAT SEN Analog (10k thermistor) 2 G Discrete, 24VAC 3 RAT SEN Analog (10k thermistor) 4 Y1 Discrete, 24VAC 5 6 Y2 Discrete, 24VAC 7 LOOP--- PWR Analog, 24VDC 8 W1 Discrete, 24VAC

9 I A Q --- S E N A n a l o g , 4 --- 2 0 m A 10 W2 Discrete, 24VAC 11 I A Q --- C O M / O A Q --- C O M / R H --- C O M A n a l o g , 4 --- 2 0 m A 12 CCN + (RED) Digital, 5VDC 13 O A Q --- SEN/R H --- S E N A n a l o g , 4 --- 20mA 14 CCN Gnd (WHT) Digital, 5VDC 15 AUX OUT (Power Exhaust) (Output) Discrete 24V AC 16 CCN --- (BLK) Digital, 5VDC

LEGEND:

CCN --- Carrier Comfort Network (communication bus) G --- T h e r mo s t a t Fan IAQ --- Indoor Air Quality (CO2) OAQ --- Outdoor Air Quality (CO2) RAT --- Return Air Temperature RH --- Relative Humidity W1 --- Thermostat Heat Stage 1 W2 --- Thermostat Heat Stage 2 Y1 --- Thermostat Cool Stage 1 Y2 --- Thermostat Cool Stage 2

50TC

Connect T--56 -- See Fig. 38 for T--56 internal connections. Install a jumper between SEN and SET terminals as illustrated. Connect T--56 terminals to TB1 terminals 1, 3 and 5 (see Fig. 39).

SW1

SEN

RED(+)

WHT(GND)

BLK(-)

SET

BLK (T56)

BRN (GND) BLU (SPT)

CCN COM

SENSOR WIRING

JUMPER TERMINALS AS SHOWN

50TC

PremierLink Configuration screen for Operating Mode. Default setting is Sensor Mode (value 1). Change the value to 0 to reconfigure the controller for Thermostat Mode.

When the PremierLink is configured for Thermostat Mode, these functions are not available: Fire Shutdown (FSD), Remote Occupied (RMTOCC), Compressor Safety (CMPSAFE), Supply Fan Status (SFS), and Filter Pressure Switch (FILTER).

Economizer controls —

Outdoor Air Enthalpy Control (PNO HH57AC077) --

The enthalpy control (HH57AC077) is available as a field--installed accessory to be used with the EconoMi$er2 damper system. The outdoor air enthalpy sensor is part of the enthalpy control. (The separate field--installed accessory return air enthalpy sensor (HH57AC078) is required for differential enthalpy control. See below.)

Cool Warm

C08202

Fig. 38 -- T--56 Internal Connections

TB1 PL

SEN J6-7

SEN

Jumper

SET

TB1

J6-6

J6-5

C08213

Fig. 39 -- PremierLink T56 Sensor

Connect Thermostat — A 7--wire thermostat connection requires a 24--v power source and a common connection. Use the R and C terminals on the LCTB’s THERMOSTAT connection strip for these. Connect the thermostat’s Y1, Y2, W1, W2 and G terminals to PremierLink TB1 as shown in Fig. 40.

If the 50TC unit is equipped with factory--installed smoke detector(s), disconnect the factory BLU lead at TB1--6 (Y2) before connecting the thermostat. Identify the BLU lead originating at LCTB DDC--1; disconnect at TB1--6 and tape off. Confirm that the second BLU lead at TB1--6 remains connected to PremierLink J4--8.

If the 50TC unit has an economizer system and free--cool ing operation is required, a sensor representing Return Air Temperature must also be connected (field--supplied and installed). This sensor may be a T--55 Space Sensor (see Fig. 36) insta lled in the space or in the return duct, or it may be sensor PNO 33ZCSENSAT, installed in the return duct. Connect this sensor to TB1 --1 and TB1--3 per Fig. 37. Temperature--resistance characteristi c is found in Table 5.

Locate the enthalpy control in the economizer hood. Locate two GRA leads in the factory harness and connect these leads to enthalpy control sensors 2 and 3. See Fig.

41. Connect the enthalpy control power input terminals to economizer actuator power leads RED (connect to TR) and BLK (connect to TR).

SPACE THERMOSTAT

G J4-12

LCTB THERMOSTAT

TB1

LCTB

J4-10

J4-8

J4-6

J4-4

THERMOSTAT

C08119

Fig. 40 -- Space Thermostat Connections

Enthalpy Switch

GRA

LCTB ECON

Factory Wiring Harness

C08218

Fig. 41 -- Enthalpy Switch (HH57AC077) Connections

Configure the unit for Thermostat Mode — Connect to the CCN bus using a CCN service tool and navigate to

The outdoor enthalpy changeover setpoint is set at the enthalpy controller.

The enthalpy control receives the outdoor air enthalpy from the outdoor air enthalpy sensor and provides a dry contact switch input to the PremierLink controller. A closed contact indicates that outside air is preferred to the return air. An open contact indicates that the economizer should remain a t minimum position.

levels. This information is used to monitor IAQ levels. Several types of sensors are available, for wall mounting in the space or in return duct, with and without LCD display, and in combination with space temperature sensors. Sensors use infrared technology to measure the levels of CO2 present in the space air.

Differential Enthalpy Control — Differential enthalpy control is provide d by sensing and comparing the outside air and return air enthalpy conditions. Install the outdoor air enthalpy control as described above. Add and install a return air enthalpy sensor.

Return Air Enthalpy Sensor — Mount the return--air enthalpy sensor (HH57AC078) in the return--air duct. The return air sensor is wired to the enthalpy controller (HH57AC077). See Fig. 42.

ENTHALPY CONTROLLER

TR TR1

LED

NOTES:

1. Remove factory-installed jumper across SR and + before connecting wires from return air sensor.

2. Switches shown in high outdoor air enthalpy state. Terminals 2 and 3 close on low outdoor air enthalpy relative to indoor air enthalpy.

3. Remove sensor mounted on back of control and locate in outside airstream.

RED BRN

BLK

RED

GRAY/ORN

GRAY/RED

WIRE HARNESS IN UNIT

(OUTDOOR

AIR

ENTHALPY

SENSOR)

(RETURN AIR

ENTHALPY

SENSOR)

The CO2 sensors are all factory set for a range of 0 to 2000 ppm and a linear mA output of 4 t o 20. Refer to the instructions supplied with the CO2 sensor for electrical requirements and term inal locations. See Fig. 43 for typical CO2 sensor wiring schematic.

0-10VDC

SIG COM (J4-6)

4-20mA (J4-5)

ALARM

NC COM

RELAY

}

CONTACTS

24 VAC

24 VDC

50TC

C06019

Fig. 42 -- Outside and Return Air Enthalpy Sensor

Wiring

To wire the return air enthalpy sensor, perform the following:

1. Use a 2--conduc tor, 18 or 20 AWG, twisted pair cable to connect the return air enthalpy sensor to the enthalpy controller.

2. At the enthalpy control remove the factory--installed resistor from the (SR) and (+) terminals.

3. Connect the field--supplied RED wire to (+) spade connector on the return air enthalpy sensor and the (SR+) terminal on the enthalpy control ler. Connect the BLK wire to (S) spade connector on the return air enthalpy sensor and the (SR) terminal on the enthalpy controller.

NOTE: The enthalpy control must be set to the “D” setting for differential enthalpy control to work properly.

The enthalpy control receives the indoor and return enthalpy from the outdoor and return air enthalpy sensors and provides a dry conta ct switch input to the PremierLink controller. A closed contact indicates that outside air is preferred to the return air. An open contact indicates that the economizer should remain at minimum position.

Indoor Air Quality (CO2 sensor) — The indoor air quality sensor accessory monitors space carbon dioxide (CO2)

C07134

Fig. 43 -- Indoor/Outdoor Air Quality (CO2) Sensor

(33ZCSENCO2) -- Typical Wiring Diagram

To accurately monitor the quality of the air in the conditioned air space, locate the sensor near a return--air grille (if present) so it senses the concentration of CO2 leaving the space. The sensor should be mounted in a location to avoid direct breath contact.

Do not mount the IAQ sensor in drafty areas such as near supply ducts, open windows, fans, or over heat sources. Allow at least 3 ft (0.9 m) between the sensor and any corner. Avoid mounting the sensor where it is influenced by the supply air; the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air doe s not have a chance to mix with the room air before it is drawn into the return a irstream.

Wiring the Indoor Air Quality Sensor —

For each sensor, use two 2--conductor 18 AWG (American Wire Gage) twisted--pair cables (unshielded) to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals.

To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the sensor. See Fig. 43. Connect the 4--20 mA terminal to terminal TB1--9 and connect the SIG COM terminal to terminal TB1--7. See Fig. 44.

IAQ Sensor

SEN J5-5

COM

24 VAC

TB1

J5-6

C08274

Fig. 44 -- Indoor CO2 Sensor (33ZCSENCO2) Connec-

tions

Refer to Form 33CS--58SI, PremierLink Insta llation, Start--up, and Configuration Instructions, for detailed configuration information.

Smoke Detector/Fire Shutdown (FSD) — This function is available only when PremierLink is configured for (Space) Sensor Mode. The unit is factory--wired for PremierLink FSD operation when PremierLink is factory--i nstalled.

Refer to Form 33CS--58SI, PremierLink Insta llation, Start--up, and Configuration Instructions, for detailed configuration information

Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus weatherproof enclosure) — The outdoor air CO2 sensor is designed to m onitor carbon dioxide (CO2) levels in the outside ventilation air and interface with the ventilation damper in an HVAC system. The OAQ sensor is packaged

50TC

with an outdoor cove r. See Fig. 45. The outdoor air CO2 sensor must be located in the economizer outside air hood.

COVER REMOVED SIDE VIEW

Fig. 45 -- Outdoor Air Quality Sensor Cover

C07135

On 50TC units equipped with factory--installed Smoke Detector(s), the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit’s LCTB input. The FSD func tion is initiated via the smoke detector’s Alarm NO contact set. The PremierLink communicates the smoke detector’s tripped status to the CCN building control. See Fig. 23 for unit smoke detector wiring.

Alarm state is reset when the smoke detector alarm condition is cleared and reset at the smoke detector in the unit.

If the PremierLink mode ha s been changed to Thermostat, disconnect the BLU lead (from LCTB DDC--1) at TB1--6 (Y2) and tape off before connecting the thermostat to TB1.

Filter Status Switch — This function is available only when PremierLink is configured for (Space) Sensor Mode.

PremierLink control can monitor return filter status in two ways: By monitoring a field--supplied/installed filter pressure switch or via supply fan runtime hours.

Using switch input: Install the dirty filter pressure switch according to switch manufacturer’s instructions, to measure pressure drop across the unit’s return filters. Connect one side of the switch’s NO contact set to LCTB’s THERMOSTAT--R terminal. Connect the other side of the NO contact set to TB1--10. Setpoint for Dirty Filter is set at the switch. See Fig. 47.

Wiring the Outdoor Air CO2 Sensor — A dedicated power supply is required for this sensor. A two--wire cable is required to wire the dedicated power supply for the sensor. The two wires should be connected to the power supply and terminals 1 and 2.

To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the OAQ sensor. See Fig. 43. Connect the 4 to 20 mA terminal to 50TC’s terminal TB1--11. Connect the SIG COM terminal to 50TC’s terminal TB1-- 13. See Fig. 461.

OAQ Sensor/RH Sensor

SEN J5-2

COM

24 VAC

TB1

J5-3

C08275

Fig. 46 -- Outdoor CO2 Sensor Connections

Filter Switch (NO, close on rising pressure (high drop))

LCTB Thermostat

TB1

J4-4

C08216

Fig. 47 -- PremierLink Filter Switch Connection

When the filter switch’s NO contact set closes as filter pressure drop increases (indicating dirt--laden filters), the input signal to PremierLink causes the filter status point to read “DIRTY”.

Using Filter Timer Hours: Refer to Form 33CS--58SI for instructions on using the PremierLink Configuration screens and on unit alarm sequence.

Supply Fan Status Switch — The PremierLink control can monitor supply fan operation through a field--supplied/installed differential pressure switch. This

sequence will prevent (or interrupt) operation of unit cooling, heating and economizer functions until the pressure switch contacts are c losed indicating proper supply fan operation.

Install the differential pressure switch in the supply fan section according to switch manufacturer’s instructions. Arrange the switch c ontact to be open on no flow and to close as pressure rises indicating fan operation.

Connect one side of the switch’s NO contact set to LCTB’s THERMOSTAT--R terminal. Connect the other side of the NO contact set to TB1--8. Setpoint for Supply Fan Status is set at the switch. See Fig. 48

Fan (Pressure) Switch (NO, close on rise in pressure)

LCTB Thermostat

TB1

J4-6

C08118

Fig. 48 -- PremierLink Wiring Fan Pressure Switch

Connection

Remote Occupied Switch — The PremierLink control permits a remote timeclock to override the control’s on--board occupancy schedule and place the unit into Occupied mode. This function may also provide a “Door Switch” time delay function that will terminate cooling and heating functions after a 2--20 minute delay.

Connect one side of the NO contact set on the timeclock to LCTB’s THERMOSTAT--R terminal. Connect the other side of the timeclock contact to the unit’s TB1--2 terminal.

Remote Occupied

Time Clock

LCTB Thermostat

TB1

J4-12

C08214

Fig. 49 -- PremierLink Wiring Remote Occupied

Refer to Form 33CS--58SI for additional information on configuring the PremierLink control for Door Switch timer function.

Power Exhaust (output) -- Connect the accessory Power Exhaust contactor coils(s) per Fig. 50.

Power Exhaust

PEC

TAN

TB1

J8-3

LCTB

THERMOSTAT

GRA

C08120

Fig. 50 -- PremierLink Power Exhaust Output

Connection

Space Relative Humidity Sensor — The RH sensor is not used with 50TC models at this time.

CCN Communication Bus — The PremierLink controller connects to the bus in a daisy chain arrangement. Negative pins on each component must be connected to respective negative pins, and likewise, positive pins on each component must be connected to respective positive pins. The controller signal pins must be wired to the signal ground pins. Wiring connections for CCN must be ma de at the 3--pin plug.

At any baud (9600, 19200, 38400 baud), the number of controllers is limited to 239 devices maximum. Bus length may not exceed 4000 ft, with no more than 60 total devices on any 1000--ft section. Optically isolated RS--485 repeaters are required every 1000 ft.

NOTE: Carrier device default is 9600 band.

COMMUNICATION BUS WIRE SPECIFICATIONS — The CCN Communication Bus wiring is fi eld--supplied and field--installed. It consists of shielded 3--conductor cable with drain (ground) wire. The cable selec ted must be identical to the CCN Communication Bus wire used for the entire network.

See Table 9 for recommended cable.

Table 9 – Recommended Cables

MANUFACTURER CABLE PART NO.

Alpha 2413 or 5463

American A22503

Belden 8772

Columbia 02525

NOTE: Conductors and drain wire must be at l east 20 AWG, stranded, and tinned copper. Individual conductors must be insulated with PVC, PVC/nylon, vinyl, Teflon, or polyethylene. An aluminum/polyester 100% foil shield and an outer jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a minimum operating temperature range of

--20 C to 60 C is required. Do not run communication wire in the same conduit as or next to any AC voltage wiring.

The communication bus shields must be tied together at each system element. If the communication bus is entirely within one building, the resulting continuous shield must be connected to ground at only one single point. If the communication bus cable exits from one building and enters another building, the shields must be connected to the grounds at a lightning suppressor in each building (one point only).

Connecting CCN bus:

NOTE: When connecting the communication bus cable, a color code system for the entire network is recommended to simplify installation and checkout. See Table 10 for the recommended color code.

Table 10 – Color Code Recommendations

SIGNAL TYPE

+ Red 1

Ground White 2

--- Black 3

CCN BUS WIRE

COLOR

CCN PLUG PIN

NUMBER

Connect the CCN (+) lead (typically RED) to the unit’s TB1--12 ter minal. Connect the CCN (ground) l ead

50TC

(typically WHT) to the unit’s TB1--14 terminal. Connect

the CCN (--) lead (typically BLK) to the unit’s TB1--16 terminal. See Fig. 51.

CCN Bus

TB1

+ (RED)

TB1

GND (WHT)

TB1

– (BLK)

Fig. 51 -- PremierLink CCN Bus Connections

ECONOMIZER SYSTEMS

50TC

The 50TC units may be equipped with a factory--installed or accessory (field--installed) economizer system. Two types are available: with a logic control system (EconoMi$er IV) and without a control system (EconoMi$er2, for use with external control systems such as PremierLink). See Fig. 52 and 53 for component locations on each type. See Fig. 54 and 55 for economizer section wiring diagrams.

Both economizers use direct--drive damper actuators.

J2-1

J2-2

J2-3

C08276

ECONOMI$ER IV CONTROLLER

WIRING HARNESS

CTUATOR

OUTSIDE AIR TEMPERATURE SENSOR

LOW AMBIENT SENSOR

Fig. 52 -- EconoMi$er IV Component Locations

OUTDOOR AIR HOOD

ECONOMI$ER2 PLUG

BAROMETRIC RELIEF DAMPER

HOOD SHIPPING BRACKET

GEAR DRIVEN DAMPER

Fig. 53 -- EconoMi$er2 Component Locations

C06021

C06022

DCV— Demand Controlled Ventilation IAQ — Indoor Air Quality LA — Low Ambient Lockout Device OAT — Outdoor-Air Temperature POT— Potentiometer RAT— Return-Air Temperature

LEGEND

Potentiometer Defaults Settings: Power Exhaust Middle Minimum Pos. Fully Closed DCV Max. Middle DCV Set Middle Enthalpy C Setting

Fig. 54 -- EconoMi$er IV Wiring

FOR OCCUPANCY CONTROL REPLACE JUMPER WITH FIELD-SUPPLIED TIME CLOCK

NOTES:

1. 620 ohm, 1 watt 5% resistor should be removed only when using differential enthalpy or dry bulb.

2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power supply, it cannot have the secondary of the transformer grounded.

3. For field-installed remote minimum position POT, remove black wire jumper between P and P1 and set c ontrol minimum position POT to the minimum position.

C06028

BLACK

BLUE

500 OHM RESISTOR

VIOLET

NOTE 1

RUN

NOTE 3

50HJ540573 ACTUATOR

ASSEMBLY

DIRECT DRIVE

ACTUATOR

NOTES:

1. Switch on actuator must be in run position for economizer to operate.

2. PremierLink™ control requires that the standard 50HJ540569 outside-air sensor be replaced by either the CROASENR001A00 dry bulb sen sor or HH57A077 enthalpy sensor.

3. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.

OAT SENSOR

4-20mA SIGNAL

PINK

YELLOW

WHITE

TRANSFORMER GROUND

RED

ECONOMISER2 PLUG

24 VAC

4-20 mA TO J9 ON PremierLink BOARD

C08310

Fig. 55 -- EconoMi$er2 with 4 to 20 mA Control Wiring

50TC

Table 11 – EconoMi$er IV Input/Output Logic

INPUTS OUTPUTS

Demand Control

Ventilation (DCV)

Below set

(DCV LED Off)

Above set

(DCV LED On)

(Free Cooling LED Off)

(Free Cooling LED On)

(Free Cooling LED Off)

(Free Cooling LED On)

Enthalpy*

Outdoor Return

High

Low

High

Low

High

Low

High

Y1 Y2

On On On On

Off Off Off Off On On On Off On Off Off Off Off Off Off Off Minimum position Closed On On On On On Off On Off Off Off Off Off On On On Off

Off Off Off Off

* For single enthalpy control, the module compares outdoor enthalpy to the ABCD setpoint. † Power at N terminal determines Occupied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied). ** Modulation is based on the supply-air sensor signal. †† Modulation is based on the DCV signal. *** Modulation is based on the greater of DCV and supply-air sensor signals, between minimum position and either maximum position (DCV)

or fully open (supply-air signal).

††† Modulation is based on the greater of DCV and supply-air sensor signals, between closed and either maximum position (DCV) or fully

open (supply-air signal).

Compressor NTerminal†

Stage1Stage

Occupied Unoccupied

Damper

Minimum position ClosedOn Off On Off

Modulating** (between min.

position and full-open)

Modulating†† (between min.

position and DCV

maximum)

Modulating*** Modulating†††On Off Off Off

Modulating** (between

closed and full-open)

Modulating†† (between

closed and DCV

maximum)

50TC

C06053

Fig. 56 -- EconoMi$er IV Functional View

EconoMi$er IV

Table 11 provides a summary of Economizer IV. Troubleshooting instructions are enclosed.

A functional view of the EconoMi$er is shown in 56. Typical settings, sensor ranges, and jumper positions are also shown. An EconoMi$er IV sim ulator program is available from Carrier to help with EconoMi$er IV training and troubleshooting.

EconoMi$er IV Standard Outdoor Air Temperature (OAT) Sensor

The outdoor air temperature sensor (HH57AC074) is a 10 to 20 mA device used to measure the outdoor-air temperature. The outdoor-air temperature is used to determine when the EconoMi$er IV can be used for free cooling. The sensor is factory-installed on the EconoMi$er IV in the outdoor airstream. (See Fig. 55.) The operating range of temperature measurement is 40_ to 100_F(4_ to 38_C). See Fig. 55.

Supply Air Temperature (SAT) Sensor

The supply a ir temperature sensor is a 3 K thermistor located at the inlet of the indoor fan. (See Fig. 57.) This sensor is factory installed. The operating range of temperature measurement is 0° to 158_F(--18_ to 70_C). See Table 5 for sensor temperature/resistance values.

SUPPLY AIR TEMPERATURE SENSOR MOUNTING LOCATION

SUPPLY AIR TEMPERATURE SENSOR

Fig. 57 -- Supply Air Sensor Location

Sensors

C06033

The temperature sensor looks like an eyelet terminal with wires running to it. The sensor is located in the “crimp end” and is sealed from moisture.

Outdoor Air Lockout Sensor

The EconoMi$er IV is equipped with an ambient temperature lockout switch located in the outdoor airstream which is used to lock out the compressors below a42_F(6_C) ambient temperature. (See Fig. 52.)

EconoMi$er IV Control

IMPORTANT: The optional EconoMi$e r2 does not include

Modes

a controller. The EconoMi$er2 is operated by a 4 to 20 mA signal from an existing field-supplied controller (such as PremierLink™ control). See Fig. 54 for wiring information.

Determine the EconoMi$er IV control mode before set up of the control. Some modes of operation may require different sensors. (See Table 12.) The EconoMi$er IV is supplied from the factory with a supply--air temperature sensor and an outdoor-- air temperature sensor. This allows for operation of the EconoMi$er IV with outdoor air dry bulb changeover control. Additional accessories can be added to allow for different types of changeover control and operation of the EconoMi$er IV and unit.

Outdoor Dry Bulb Changeover

The standard controller is shipped from the factory configured for outdoor dry bulb changeover control. The outdoor air and supply air temperature sensors are included as standard. For this control mode, the outdoor temperature is compared to an adj ustable setpoint selected on the control. If the outdoor-air temperature is above the setpoint, the EconoMi$er IV will adjust the outside air dampers to minimum position. If the outdoor-air temperature is below the setpoint, the position of the outside air dampers will be controlled to provided free cooling using outdoor air. When in this mode, the LED next to the free cooling setpoint potentiometer will be on. The changeover temperature setpoint is controlled by the free cooling setpoint potentiometer located on the control. (See Fig. 58.) The scale on the potentiometer is A, B, C,

and D. See Fig. 59 for the corresponding temperature changeover values.

Differential Dry Bulb Control

For differential dry bulb control the standard outdoor dry bulb sensor is used in conjunc tion with an additional accessory dry bulb sensor (part number CRTEMPSN002A00). The accessory sensor must be mounted in t he return airstream. (See Fig. 61.) Wiring is provided in the EconoMi$er IV wiring harness. (See Fig.

52.)

ECONOMI$ERIV CONTROLLER

ECONOMI$ERIV

C06034

Fig. 58 -- EconoMi$er IV Controller Potentiometer

and LED Locations

LED ON

LED OFF

LED ON

LED OFF

DEGREES FAHRENHEIT

LED ON

LED OFF

LED ON

LED OFF

100

C06035

Fig. 59 -- Outside Air Temperature Changeover

Setpoints

0.13 0.20 0. 22 0.25 0.30 0.35 0. 40 0.45 0.50

FLOW IN CUBIC FEET PER MINUTE (cfm)

STATIC PRESSURE (in. wg)

C06031

Fig. 60 -- Outdoor--Air Damper Leakage

GROMMET

RETURN AIR SENSOR

RETURN DUCT (FIELD-PROVIDED)

C07085

Fig. 61 -- Return Air Temperature or Enthalpy Sensor

Mounting Location

In this mode of operation, the outdoor-air t emperature is compared to the return-air temperature and the lower temperature airstream is used for cooling. When using this mode of changeover control, turn the enthalpy setpoint potentiometer fully clockwise to the D setting. (See Fig.

58.)

Outdoor Enthalpy Changeover

For enthalpy control, accessory enthalpy sensor (part number HH57AC078) is required. Replace the standard outdoor dry bulb temperature sensor with the accessory enthalpy sensor in t he same mounting location. (See 56.) When the outdoor air enthalpy rises above the outdoor enthalpy changeover setpoint, the outdoor-air damper moves to its minimum position. The outdoor enthalpy changeover setpoint is set with the outdoor enthalpy setpoint potentiometer on the EconoMi$er IV controller. The setpoints are A, B, C, and D. (See Fig. 62.) The factory-installed 620-ohm jumper must be in place across terminals S

and SR+ on the EconoMi$er IV controller.

(See Fig. 52 and 63.)

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CONTROL

CURVE

A B C D

CONTROL POINT

deg. F (deg. C)

APPROX.

AT 50% RH

73 (23) 70 (21) 67 (19) 63 (17)

ENTHALPY BTU PER POUND DRY AIR

(7) 40 (4)

35 (2)

(2)

(4)

(7)

APPROXIMATE DRY BULB TEMPERATURE--degrees F (degrees C)

(16)

(13)

(10)

(13)

(16)

(21)

(27)

(24)

(21)

(24)

(27)

(18)

Fig. 62 -- Enthalpy Changeover Setpoints

(29)90(32)95(35)

RELATIVE HUMIDITY (%)

(29)90(32)95(35)

100

105

110

(38)

(41)

(43)

HIGH LIMIT

110 (43)

CURVE

100 (38)

(41)

105

C06037

AQ1

SO+

SR+

EXH

2V 10V

EXH

Open

2V 10V

DCV

2V 10V

Free Cool

Min Pos

DCV

Max

DCV

Set

TR1

24 Vac

Va c

COM

HOT

EF1

C06038

Fig. 63 -- EonoMi$er IV Control

Differential Enthalpy Control

For differential enthalpy control, the EconoMi$er IV controller uses two enthalpy sensors (HH57AC078 and CRENTDIF004A00), one in the outside air and one in the return air duct. The EconoMi$er IV controller compares

the outdoor air enthalpy to the return air enthalpy to determine EconoMi$er IV use. The controller selects the lower enthalpy air (return or outdoor) for cooling. For example, when the outdoor air has a lower enthalpy than the return air, the E conoMi$er IV opens to bring in outdoor air for free cooling.

Replace the standard outside air dry bulb tempe rature sensor with the accessory enthalpy sensor in the same mounting location. (See Fig. 52.) Mount the return air enthalpy sensor in the return air duct. (See Fig. 61.) Wiring is provided in the EconoMi$er IV wiring harness. (See Fig. 52.) The outdoor enthalpy changeover setpoint is set with the outdoor enthalpy setpoint potentiometer on the EconoMi$er IV controller. When using this mode of changeover control, turn the enthalpy setpoint potentiometer fully clockwise to the D setting.

Indoor Air Quality (IAQ) Sensor Input

The IAQ input can be used for demand control ventilation control based on the level of CO

measured in the space

or return air duct. Mount the accessory IAQ sensor according to

manufacturer specifications. The IAQ sensor should be wired to the AQ and AQ1 terminals of the controller. Adjust the DCV potentiometers to correspond to t he DCV voltage output of the indoor air quality sensor at the user-determined setpoint. (See Fig. 64.)

CO SENSOR MAX RANGE SETTING

6000

5000

4000

3000

2000

1000

RANGE CONFIGURATION (ppm)

2345678

DAMPER VOLTAGE FOR MAX VENTILATION RATE

800 ppm 900 ppm 1000 ppm 1100 ppm

C06039

Fig. 64 -- CO2 Sensor Maximum Range Settings

If a separate field-supplied transformer is used to power the IAQ sensor, the sensor must not be grounded or the EconoMi$er IV control board will be damaged.

When using demand ventilation, the minimum damper position represents the minimum ventilation position for VOC (volatile organic compounds) ventilation requirements. The maximum demand ventilation position is used for fully occupied ventilation.

When demand ventilation control is not being used, the minimum position potentiometer should be used to set the occupied ventilation position. The maximum demand ventilation position should be turned fully clockwise.

Exhaust Setpoint Adjustment

The exhaust setpoint will determine when the exhaust fan runs based on damper position (if accessory power exhaust is installed). The setpoint is modified with the Exhaust Fan Setpoint (EXH SET) potentiometer. (See Fig.

58.) The setpoint represents the damper position above which the exhaust fans will be turned on. When there is a call for exhaust, the EconoMi$er IV controller provides a 45 ± 15 second delay before exhaust fan activation to allow the dampers to open. This delay allows the damper to reach the appropriate position to avoid unnecessary fan overload.

Minimum Position Control

There is a minimum damper position potentiometer on the EconoMi$er IV cont roller. (See Fig. 58.) The minimum damper position maintains the minimum airflow into the building during the occupied period.

When using demand ventilation, the minimum damper position represents the minimum ventilation position for VOC (volatile organic compound) ventilation requirements. The maximum demand ventilation position is used for fully occupied ventilation.

Adjust the minimum position potentiometer to allow the minimum amount of outdoor air, as required by local codes, to enter the building. Make minimum position adjustments with at least 10_F temperature difference between the outdoor and return-air temperatures.

To determine the minimum position setting, perform the following procedure:

1. Ca lculate the appropriate mixed air tempera ture using the following formula:

100 100

+(TR

)

)=T

TO= Outdoor-Air Temperature OA = Percent of Outdoor Air T

= Return-Air Temperature

RA = Percent of Return Air T

= Mixed-Air Temperature

As an example, if local codes require 10% outdoor air during oc cupied conditions, outdoor-air temperature is 60_ F, and return-air temperature is 75_F.

(60 x .10) + (75 x .90) = 73.5_ F

2. Disconne ct the supply air sensor from terminals T and T1.

3. Ensure that the factory-installed jumper is in place across terminals P and P1. If remote damper positioning is being used, make sure that the terminals are wired according to Fig. 52 and that the minimum position potentiometer is turned fully clockwise.

4. Conne ct 24 vac across terminals TR and TR1.

5. Carefully adjust the minimum position potentiometer until the measured mixed air temperature matches the calculated value.

6. Re connect the supply air sensor to terminals T and T1.

Remote control of the EconoMi$e r IV damper is desirable when requiring additional temporary ventilation. If a field-supplied remote potentiometer (Honeywell part number S963B1128) is wired to the EconoMi$er IV controller, the minimum position of the damper can be controlled from a remote location.

To control the minimum damper position remotely, remove the factory-installed jumper on the P and P1 terminals on the EconoMi$er IV controller. Wire the field-supplied potentiometer to the P and P1 terminals on the EconoMi$er IV controller. (See Fig. 63.)

Damper Movement

Damper movement from full open to full closed (or vice

versa) takes 2

/2minutes.

Thermostats

The EconoMi$er IV control works with conventional thermostats that have a Y1 (cool stage 1), Y2 (cool stage

2), W1 (heat stage 1), W2 (heat stage 2), and G (fan). The EconoMi$er IV control does not support space temperature sensors. Connections are made at the thermostat terminal connection board located in the main control box.

Occupancy Control

The factory default c onfiguration for the EconoMi$er IV control is occupied mode. Occupied status is provided by the black jumper from terminal TR to terminal N. When unoccupied mode is desired, i nstall a fie ld--supplied

50TC

timeclock function in place of the jumper between TR and N. (See Fig. 52.) When the timeclock contacts are closed, the Ec onoMi$er IV control will be in occupied mode. When the timeclock contacts are open (removing the 24--v signal from terminal N), the EconoMi$er IV will be in unoccupied mode.

Demand Control Ventilation (DCV)

When using the EconoMi$er IV for dem and controlled ventilation, there are some equipment selection criteria which should be considered. When selecting the heat capacity and cool capacity of the equipment, the maximum ventilation rate must be evaluated for design conditions. The maximum damper position must be calculated to provide the desired fresh air.

Typically the maximum ventilation rate will be about 5 to 10% more than the typical cfm required per person, using normal outside air design cri teria.

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A proportional anticipatory strategy should be taken with the following conditions: a zone with a large area, varied occupancy, and equipment that cannot exceed the required ventilation rate at design conditions. Exceeding the required ventilation rate means the equipment can condition air at a maximum ventilation rate that is greater than the required ventilation rate for maximum occupancy. A proportional-anticipatory strategy will cause the fresh air supplied to increase as the room CO increases even though the CO reached. By the time the CO

setpoint has not been

level reaches the setpoint,

the damper will be at maximum ventilation and should maintain the setpoint.

In order to have the CO

sensor control the economizer

damper in this manner, first determine the damper voltage output for minimum or base ventilation. Base ventilation is the ventilation required to remove contaminants during unoccupied periods. The following equation may be used to determine the percent of outside air entering the building for a given damper position. For best results there should be at least a 10 degree difference in outside and return-air temperatures.

100 100

+(TR

)

)=T

TO= Outdoor-Air Temperature OA = Percent of Outdoor Air T

= Return-Air Temperature

RA = Percent of Return Air T

= Mixed-Air Temperature

Once base ventilation has been determined, set the minimum damper position potentiometer to the correct position.

The same equation can be used to determine the occupied or maximum ventilation rate to the building. For example, an output of 3.6 volts to the actuator provides a base ventilation rate of 5% and an output of 6.7 volts provides the maximum ventilation rate of 20% (or base plus 15 cfm per person). Use Fig. 64 to det ermine the maximum setting of the CO

sensor. For example, an 1100 ppm

setpoint relates to a 15 cfm per person design. Use the 1100 ppm curve on Fig. 64 to find the point when t he CO sensor output will be 6.7 volts. Line up the point on the

level

graph with the left side of the chart to determine that the range configuration for the CO

sensor should be 1800

ppm. The EconoMi$er IV controller will output the 6.7 volts from the CO

sensor to the actuator when the CO

concentration in the space is at 1100 ppm. The DCV setpoint may be left at 2 volts since the CO voltage will be ignored by the EconoMi$er IV controller until it rises above the 3.6 volt setting of the minimum position potentiometer.

Once the fully occupied damper position has been determined, set the maximum damper demand control ventilation potentiometer to this position. Do not set to the maximum position as this can result in over-ventilation to the space and potential high humidity levels.

Sensor Configuration

The CO2sensor has preset standard voltage settings that can be selected anytime after the sensor is powered up. (See Table 12.)

Use setting 1 or 2 for Carrier equipment. (See Table 12.)

1. Press Clear and Mode buttons. Hold at least 5 seconds until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear.

Table 12 – EconoMi$er IV Sensor Usage

APPLICATION

Outdoor Air

Dry Bulb

Differential

Dry Bulb

Single Enthalpy HH57AC078

Differential

Enthalpy

CO2for DCV

Control using a

Wall-Mounted

Sensor

CO2for DCV

Control using a

Duct-Mounted

Sensor

*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many different base units. As such, these kits may contain parts that will not be needed for installation. † 33ZCSENCO2 is an accessory CO ** 33ZCASPCO2 is an accessory aspirator box required for ductmounted applications. †† CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2 and 33ZCASPCO2 accessories.

ECONOMI$ER IV WITH OUTDOOR AIR

33ZCSENCO2†

33ZCASPCO2**

DRY BULB SENSOR

Accessories Required

None. The outdoor air dry bulb sensor

is factory installed.

CRTEMPSN002A00*

HH57AC078

and

CRENTDIF004A00*

33ZCSENCO2

and

CRCBDIOX005A00††

sensor.

3. Use the Up/Down button to select the preset number. (See Table 12.)

4. Press Enter to lock in the selection.

5. Press Mode to exit and resume normal operation.

The custom settings of the CO

sensor can be changed

anytime after the sensor is energized. Follow the steps below to change the non-standard settings:

1. Press Clear and Mode buttons. Hold at least 5 seconds until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear.

3. Use the Up/Down button to toggle to the NONSTD menu and press Enter.

4. Use the Up/Down button to toggle through each of

the nine variables, starting with Altitude, until the desired setting is reached.

sensor

5. Press Mode to move through the variables.

6. Press Enter to lock in the selection, then press Mode to continue to the next variable.

Dehumidification of Fresh Air with DCV (Demand Controlled Ventilation) Control

If normal rooftop heating and cooling operation is not adequate for the outdoor humidity level, an energy recovery unit and/or a dehumidification option should be considered.

EconoMi$er IV Pr

eparation

This procedure is used to prepare the EconoMi$er IV for troubleshooting. No troubleshooting or testing is done by performing the fol lowing procedure.

NOTE: This procedure requires a 9--v battery, 1.2 kilo--ohm resistor, and a 5.6 kilo--ohm resistor which are not supplied with the EconoMi$er IV.

IMPORTANT: Be sure to record the positions of all potentiometers before starting troubleshooting.

1. Disconne ct power at TR and TR1. All LEDs should be off. Exhaust fan contacts should be open.

2. Disconne ct device at P and P1.

3. Jumper P to P1.

4. Disconne ct wires at T and T1. Place 5.6 kilo--ohm resistor across T and T1.

5. Jumper TR to 1.

6. Jumper TR to N.

7. If connected, remove sensor from terminals SO and +. Connect 1.2 kilo--ohm 4074EJM checkout resistor across terminals SO and +.

8. Put 620--ohm resistor across terminals SR and +.

9. Set minimum position, DCV setpoint, and exhaust potentiometers fully CCW (counterclockwise).

10. Set DCV maximum position potentiometer fully CW (clockwise).

11. Set enthalpy potentiometer to D.

12. Apply power (24 vac) to terminals TR and TR1.

Differential

Enthalpy

To check differential enthalpy:

1. Make sure EconoMi$er IV preparation procedure has been performed.

2. Place 620--ohm resistor across SO and +.

3. Place 1.2 kil o--ohm resistor across SR and +. The Free Cool LED should be lit.

4. Re move 620--ohm resistor across SO and +. The Free Cool LED should turn off.

5. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

Enthalpy

Single

To check single enthalpy:

1. Make sure EconoMi$er IV preparation procedure has been performed.

2. Set the enthalpy potentiometer to A (fully CCW). The Free Cool LED should be lit.

3. Set the enthalpy potentiometer to D (fully CW). The Free Cool LED should turn off.

4. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

DCV (Demand Controlled Ventilation) and

Power

Exhaust

To check DCV and Power Exhaust:

1. Make sure EconoMi$er IV preparation procedure has been performed.

2. Ensure terminals AQ and AQ1 are open. The LED for both DCV and Exhaust should be off. The actuator should be fully closed.

3. Connect a 9--v battery to AQ (positive node) and AQ1 (negative node). T he LED for both DCV and Exhaust should turn on. The actuator should drive to between 90 and 95% open.

4. Turn the Exhaust potentiometer CW until the Exhaust LED turns off. The LED should turn off when the potentiometer is approximately 90%. The actuator should remain in position.

5. Turn the DCV setpoint potentiometer CW until the DCV LED turns off. The DCV LED should turn off when the potentiometer is approximately 9-- v. The actuator should drive fully closed.

6. Turn the DCV and Exhaust potentiometers CCW until the Exhaust LED turns on. The exhaust contacts will close 30 to 120 seconds after the Exhaust LED turns on.

7. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

DCV Minimum and Maximum

Position

To check the DCV minimum and maximum position:

1. Make sure EconoMi$er IV preparation procedure has been performed.

2. Connect a 9--v battery to AQ (positive node) and AQ1 (negative node). The DCV LED should turn on. The actuator should drive to between 90 and 95% open.

3. Turn the DCV Maximum Position potentiometer to midpoint. The actuator should drive to between 20 and 80% open.

4. Turn the DCV Maximum Position potentiometer to fully CCW. The actuator should drive fully closed.

5. Turn the Minimum Position potentiometer to midpoint. The actuator should drive to between 20 and 80% open.

6. Turn the Minimum Position Potentiometer fully CW. The actuator should drive ful ly open.

7. Re move the jumper from T R and N. The actuator should drive fully closed.

8. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

Supply--Air Sensor

Input

To check supply--air sensor input:

1. Make sure EconoMi$er IV preparation procedure has been performed.

50TC

2. Set the Enthalpy potentiomet er to A. The Free Cool LED turns on. The actuator should drive to between 20 and 80% open.

3. Re move the 5.6 kilo--ohm resistor and jumper T to T1. The actuator should drive fully open.

4. Re move the jumper across T and T1. The actuator should drive fully closed.

5. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

EconoMi$er IV Troubleshooting

This procedure is used to return the EconoMi$er IV to operation. No troubleshooting or testing is done by performing the fol lowing procedure.

1. Disconnect power at TR and TR1.

2. Set enthalpy potentiometer to previous setting.

3. Set DCV maximum position potentiometer to previ-

50TC

ous setting.

4. Set minimum position, DCV setpoint, and exhaust potentiometers to previous settings.

5. Re move 620--ohm resistor from terminals SR and +.

6. Re move 1.2 kilo--ohm checkout resistor from terminals SO and +. If used, re connect sensor from terminals SO and +.

7. Re move jumper from TR to N.

8. Re move jumper from TR to 1.

9. Re move 5.6 kilo--ohm resistor from T and T1. Reconnect wires at T and T1.

10. Remove jumper from P to P1. Reconnect device at P and P1.

11. Apply power (24 vac) to terminals TR and TR1.

Completion

WIRING DIAGRAMS

See Fig. 65--66 for typical wiring diagrams.

PRE--START-- UP

WARNING

PERSONAL INJURY HAZARD

Failure to follow this warning could result in personal injury or death.

1. Follow recognized safety practices and wear protective goggles when checking or servicing refrigerant system.

2. Do not operate compressor or provide any electric power to unit unless compressor terminal cover is in place and secured.

3. Do not remove compressor terminal cover until all electrical sources are disconnected.

4. Relieve all pressure from system before touching or disturbing anything inside terminal box if refrigerant leak is suspected around compressor terminals.

5. Neve r attempt to repair soldered connection while refrigerant system is under pressure.

6. Do not use torch to remove any component. System contains oil and refrigerant under pressure. To remove a component, wear protective goggles and proceed as follows:

a. Shut off electrical power to unit.

b. Recover refrigerant to relieve all pressure from

system using both high--pressure and low pressure ports.

c. Cut component connection tubing with tubing

cutter and remove component from unit.

d. Carefully unsweat remaining tubing stubs

when necessary. Oil can ignite when exposed to torch flame.

Proceed as follows to inspect and prepare the unit for initial start--up:

1. Remove all access panels.

2. Re ad and follow instructions on all WARNING, CAUTION, and INFORMATION labels attached to, or shipped with, unit.

3. Make the following inspections:

a. Inspect for shipping and handling damages such

as broken lines, loose parts, or disconnected wires, etc.

b. Inspect for oil at all refrigerant tubing connec-

tions and on unit base. Detecting oil generally indicates a refrigerant leak. Leak--test all refrigerant tubing connections using electronic leak detector, hal ide torch, or liquid--soap solution.

c. Inspect all field--wiring and factory--wiring con-

nections. Be sure that connections are completed and tight. Be sure that wires are not in contact with refrigerant tubing or sharp edges.

d. Inspect coil fins. If damaged during shipping and

handling, carefully straighten fins with a fin comb.

4. Verify the following conditions: a. Ma ke sure that condenser--fan blade are correctly

positioned in fan orifice. See Condenser--Fan Adjustment section on page 11 for more details.

b. Make sure that air filter(s) is in place.

c. Make sure that condensate drain trap is filled

with water to ensure proper drainage.

d. Make sure that all tools and miscellaneous loose

parts have been removed.

NOTE: When the compressor is rotating in the wrong direction, the unit will make an elevated level of noise and will not provide cooling.

Cooling

Set space thermostat to OFF position. To start unit, turn on main power supply. Set system selector switch at COOL position and fan switch at AUTO. position. Adjust thermostat to a setting below room temperature. Compressor starts on closure of contactor.

START--UP, GENERAL

Unit Preparation

Make sure that unit has been installed in accordance with installation instructions and applicable codes.

Return--Air Filters

Make sure correct filters are installed in unit (see Appendix II -- Physical Data). Do not operate unit without return-- air filters.

Outdoor--Air Inlet Screens

Outdoor--air inlet screen must be in place before operating unit.

Compressor Mounting

Compressors are internally spring mounted. Do not loosen or remove compressor hold down bolts.

Internal Wiring

Check all electrical connections in unit control boxes. Tighten as required.

Refrigerant Service Ports

Each unit system has two 1/4” SAE flare (with check valves) service ports: one on the suction line, and one on the compressor discharge line. Be sure that caps on the ports are tight.

Compressor Rotation

On 3--phase units with scroll compressors, it is important to be certain compressor is rotating in the proper direction. To dete rmine whether or not compressor is rotating in t he proper direction:

1. Conne ct service gauges to suction and discharge pres-

sure fittings.

2. Energize the compressor.

3. The suction pressure should drop and the discharge

pressure should rise, as is normal on any start--up.

If the suction pressure does not drop and the discharge pressure does not rise to normal levels:

1. Note that the evaporator fan is probably also rotating

in the wrong direction.

2. Turn off power to the unit and install lockout tag.

3. Re verse any two of the unit power leads.

4. Re--energize to the compressor. Check pressures.

The suction and discharge pressure levels should now move to their normal start--up levels.

Check unit charge. Refer to Refrigerant Charge section on page 7.

Reset thermostat at a position above room temperature. Compressor will shut off. Evaporator fan will shut off after a 30--second delay.

TO SHUT OFF UNIT

Set system selector switch at OFF position. Resetting thermostat at a position above room temperature shuts unit off temporarily until space temperature exceeds thermostat setting.

Heating

To start unit, turn on main power supply.

Set system selector switch at HEAT position and set thermostat at a setting above room temperature. Set fan at AUTO position.

First stage of thermostat energizes the first--stage electric heater elements; second stage energizes second--stage electric heater elements, if installed. Check heating effects at air supply grille(s).

If electric heaters do not energize, reset limit switch (located on e vaporator--fan scroll) by pressing button located between terminals on the switch.

TO SHUT OFF UNIT -- Set system selector switch at OFF position. Resetting thermostat at a position below room temperature temporarily shuts unit off until space temperature falls below thermostat setting.

Ventilation (Continuous Fan)

Set fan and system selector switches at ON and OFF positions, respectively. Evaporator fan operates continuously to provide constant air circulation.

START--UP, PREMIERLINK CONTROLS

WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

The unit must be electrically grounded i n accordance with local codes and NEC ANSI/NFPA 70 (American National Standards Institute/National Fire Protection Association.)

50TC

Use the Carrier network communication software to start up and configure the PremierLink controller.

Refer to Installation Instruction 33CS--58SI for full discussion on configuring the PremierLink control system.

Changes can be made using the ComfortWORKSr software, ComfortVIEWt software, Network Service Tool, System Pilott device, or Touch Pilott device. The System Pilot and Touch Pilot are portable interface devices that allow the user to change system set--up and setpoints from a zone sensor or terminal control module. During start-- up, the Carrier software can also be used to verify communication with Premier--Link controller.

NOTE: All set--up and setpoint configurations are factory set and field--adjustable.

For specific operating instructions, refer to the literature provided with user interface software.

Perform System Check--Out

1. Check correctness and tightness of all power and

50TC

communication connections.

2. At the unit, check fan and system controls for proper

operation.

3. At the unit, check electrical system and connections

of any accessory electric heater.

4. Check to be sure the area around the unit is clear of

construction dirt and debris.

5. Check that final filters are installed in the unit. Dust

and debris can adversely affect system operation.

6. Verify that the PremierLink controls are properly con-

nected to the CCN bus.

Initial Operation and Test

Perform the following procedure:

1. Apply 24 vac power to the control.

2. Conne ct the service tool to the phone jack service

port of the controller.

3. Using the Service Tool, upload the controller from

address 0, 31 at 9600 baud rate. The address may be set at this time. Make sure that Service Tool is connected to only one unit when changing the address.

Memory

DIP switch 4 causes an E--squared memory reset to factory defaults after the switch has been moved from position 0 to position 1 and the power has been restored. To enable the feature again, the switch must be put back to the 0 position and power must be restored; this prevents subsequent resets to factory defaults if the switch is left at position 1.

Reset

Operating Sequence, Base Unit Controls

COOLING, UNITS WITHOUT ECONOMIZER — When thermostat calls for cooling, terminals G and Y1 are energized. The indoor--fan contactor (IFC) and compressor contactor are energized and indoor--fan motor, compressor, and outdoor fan starts. The outdoor fan motor runs continuously while unit is cooling.

HEATING, UNITS WITHOUT ECONOMIZER — When the thermostat calls for heating, terminal W1 will be energized with 24v. The IFC and heater contactor no. 1 (HC1) are energized.

COOLING, UNITS WITH ECONOMI$ER IV — When free cooling is not available, the compressors will be controlled by the zone thermostat. When free cooling is available, the outdoor--air damper is modulated by the EconoMi$er IV c ontrol to provide a 50 to 55_F supply--air temperature into the zone. As the supply--air te mperature fluctuates above 55 or below 50_F, the dampers will be modulated (open or close) to bring the supply-- air temperature back within the setpoint limits.

Integrated EconoMi$er IV operation on single stage units requires a 2 --stage thermostat (Y1 and Y2).

For EconoMi$er IV operation, there must be a thermostat call for the fan (G). This will move the damper to its minimum position during the occupied mode.

If the increase in cooling capacity causes the supply--air temperature to drop below 45_F, then the outdoor--ai r damper position will be fully closed. If the supply--air temperature continues to fall, the outdoor--air da mper will close. Control returns to normal once the supply--air temperature rises above 48_F. If optional power exhaust is installed, as the outdoor--air damper ope ns and closes, the power exhaust fans will be energized and deenergized.

If field--installed accessory CO2 sensors are connected to the EconoMi$er IV control, a demand controlled ventilation strategy will begin to operate. As the CO2 level in the zone increases above the CO2 setpoint, the minimum position of the damper will be increased proportionally. As the CO2 level decreases because of the increase in fresh air, the outdoor--air damper will be proportionally closed. Damper position will follow the higher demand condition from DCV mode or free cooling mode.

To cause a reset of the non--volatile memory (to factory defaults), turn the controller power off if it is on, move the switch from position 1 to position 0, and then apply power to the controller for a minimum of 5 seconds. At this point, no action occurs, but the controller is now ready for the memory to reset. Remove power to the controller again and move the switch from position 0 to position 1. This time, when power is applied, the memory will reset to factory defaults. The controller address will return to bus 0 element 31, indicating that m emory reset occurred.

Damper movement from full closed to full open (or vice versa) will take between 1--1/2 and 2--1/2 minutes.

If free cooling can be used as determined from the appropriate changeover command (switch, dry bulb, enthalpy curve, differential dry bulb, or differential enthalpy), a call for cooling (Y1 closes at the thermostat) will cause the control to modulate the dampers open to maintain the supply air temperature setpoint at 50 to 55_F. As the supply--air temperature drops below the setpoint range of 50 to 55_F, the control will modulate the

outdoor--air dampe rs closed to maintain the proper supply--air temperature.

compressors 1 and 2 will be cycled based on Y1 and Y2 inputs respectively.

HEATING, UNITS WITH ECONOMI$ER IV — When the room temperature calls for heat, the heating controls are energized as described in the Heating, Units Without Economizer section.

ECONOMIZER IN OCCUPIED MODE — The economizer logic will be energized when the unit IFC is energized. The economizer damper will open to the minimum position setting and remain open until the IFC is de--energized.

ECONOMIZER IN UNOCCUPIED MODE — The economizer damper will remain closed during Unoccupied Mode periods.

Operating Sequence, PremierLink Control

THERMOSTAT MODE — If the PremierLink controller is configured for Thermostat mode (TSTAT), it will control only to the thermostat inputs on J4. These inputs can be overridden through CCN communication via the CV_TSTAT points display table. When in this mode, t he fire safety shutdown (FSD) input cannot be used, so any fire/life safety shutdown must be physically wired to disable the 24 vac control circuit to the unit.

Indoor Fan — The indoor fan output will be e nergized whenever there is 24 vac present on the G input. The indoor fan will be turned on without any delay and the economizer damper will open to its minimum position if the unit has a damper connected to the controller. This will also occur if the Premier-- Link controller has been configured for electric heat or heat pump operation.

Cooling — For cooling operation, there must be 24 vac present on G. When G is active, the PremierLink controller will then determine if outdoor conditions are suitable for economizer cooling when an economizer damper is available. A valid OAT, SPT (CCN space temperature) and SAT (supply air temperature) sensor MUST be installed for proper economizer operation. It recommended that an outdoor or differential enthalpy sensor also be installed. If one is not present, then a jumper is needed on the ENTH input on J4, which will indicate that the enthalpy will always be low. Economizer operation will be based only on outdoor air dry bulb temperature. The conditions are suitable when: enthalpy is low, OAT is less than OATL High Lockout for TSTAT, and OAT is less than OATMAX, the high setpoint for free cooling. The default for OATL is 65_F. The default for OATMAX is 75_F.

When all of the above conditions are satisfied and all the required sensors are installed, the PremierLink controller will use the economizer for cooling. One of three different control routines will be used depending on the temperature of the outside air. The routines use a PID loop to control the SAT to a supply air setpoint (SASP) based on the error from setpoint (SASPSAT). The SASP is determined by the routine.

If an economizer is not a vailable or the conditions are not met for the following economizer routines below, the

Any time the compressors are running, the PremierLink controller will lock out the compressors if the SAT becomes too low. These user configurable settings are found in the SERVICE configuration table:

Compressor 1 Lockout at SAT < SATLO1 (50 to 65_F) (default is 55_F)

Compressor 2 Lockout at SAT < SATLO2 (45 to 55_F) (default is 50_F)

After a compressor is locked out, it may be started again after a normal time--guard pe riod and the supply -- a ir temperature has increased at least 8_F above the lockout setpoint.

Routine No. 1: If the OAT ≤ DXLOCK (OAT DX lockout temperature) and DX Cooling Lockout is enabled when Y1 input is energized, the economizer will be modulated to maintain SAT at the Supply Air Setpoint (SASP) = SATLO1 + 3_F (Supply Air Low Temp lockout for compressor 1). When Y2 is energized, the economizer will be modulated to control to a lower SASP = SATLO2 +3_F (Supply Air Low Temp lockout for compressor no.

2). Mechanical cooling is locked out and will not be energized.

Routine No. 2: If DXLOCK (or DX Cooling Lockout is disabled) < OAT ≤ 68_F when Y1 input is energized, the economizer will be modulated to mai ntain SAT at SASP = SATLO1 + 3_F. If t he SA T > SAS P + 5_F and the economizer position > 85% then the economizer will close the to minimum position for three minutes or until the SAT > 68_F. The economizer integrator will then be reset and begin modulating to maintain the SASP after stage one has been energized for 90 seconds.

When Y2 is energized, the economizer will be modulated to control to a lower supply air setpoint SASP= SATLO2 +3_F If the SAT > SASP + 5_F it will close the economizer to minimum position for 3 minutes, reset the integrator for the economizer, then start modula ting the economizer to maintain the SASP after the stage two has been on for 90 seconds. This provides protection for the compressor against flooded starts and allow refrigerant flow to stabilize before modulating the economizer again. By using return air across the evaporator coil just after the compressor has started allows for increased refrigerant flow rates providing better oil return of any oil washed out during compressor start--up.

Routine No. 3: If the OAT > 68_F and the enthalpy is low and the OAT <SPT then the economizer will open to 100% and compressors 1 and 2 will be cycled based on Y1 and Y2 inputs respectively. If any of these conditions are not met the economizer will go to minimum position.

If there is no call for heating or cooling, the economizer, if available, will maintain the SASP at 70_F.

Heating — For gas or electric heat, HS1 and HS2 outputs will follow W1 and W2 inputs respectively. The fan will also be turned on if it is configured for electric heat.

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Heating may also be energized when an IAQ sensor installed and has overridden the minimum economizer damper position. If the OAT < 55_F and an IAQ sensor is installed and the IAQ minimum position > minimum damper position causing the SAT to decrease below the SPT -- 10_F, then the heat stages will be cycled to temper the SAT to maintain a temperature between the SPT and the SPT + 10_F.

Auxiliary Relay configured for Exhaust Fan — If the Auxiliary Relay is configured for exhaust fan (AUXOUT = 1) in the CONFIG configuration table and Continuous Power Exhaust (MODPE) is enable in the SERVICE configuration table then the output (HS3) will be energized whenever the G input is on. If the MODPE is disabled then output will be energized based on the Power Exhaust Setpoint (PES) in the SETPOINT table.

Indoor Air Quality — If the optional indoor air quality

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(IAQI) sensor is installed, the PremierLink controller will maintain indoor air quality within the space at the user--configured differential setpoint (IAQD) in the CONFIG configuration table. The setpoint is the difference between the IAQI and an optional outdoor air quality sensor (OAQ). If the OAQ is not present then a fixed value of 400 ppm is used. The actual space IAQ setpoint (IAQS) is calculated as follows:

IAQS = IAQD + OAQ (OAQ = 400 ppm if not present)

As air quality within the space changes, the minimum position of the economizer damper will be changed also thus allowing more or less outdoor air into the space depending on the relationship of the IAQI to the IAQS. The IAQ algorithm runs every 30 seconds and ca lculates IAQ minimum position value using a PID loop on the IAQI deviation from the IAQS. The IAQ minimum position is then compared against the user configured minimum position (MDP) and the greatest value becomes the final minimum damper position (IQMP). If the calculated IAQ Minimum Position is greater than the IAQ maximum damper position (IAQMAXP) decision in the SERVICE configuration table, then it will be clamped to IAQMAXP value.

If IAQ is configured for low priority, the positioning of the economizer damper can be overridden by comfort requirements. If the SAT < SASP --8_F and both stages of heat are on for more then 4 minutes or the SAT > SASP + 5_F and both stages of cooling on for more then 4 minutes then the IAQ minimum damper position will become 0 and the IQMP = MDP. IAQ mode will resume when the SAT > SASP --8_F in heating or the SAT < SASP + 5_Fin cooling. If the Premier--

Link controller is configured for 1 stage of heat and cool or is only using a single stage thermostat input, this function will not work as it requires the both Y1 and Y2 or W1 and W2 inputs to be active. In thi s application, it is recommended that the user configure IAQ priority for high.

If IAQ is configured for high priority and the OAT < 55_F and the SAT < (SPT --10_F), the algorithm will enable the

heat stages to maintain the SAT between the SPT and the SPT + 10_F.

CCN SENSOR MODE — When the PremierLink controller is confi gured for CCN control, it will control the compressor, economizer and heating outputs based its own space temperature input and setpoints or those received from Linkage. An optional CO2 IAQ sensor mounted in the space or received through communications can also influence the economizer and heating outputs. The PremierLink controller does not have a hardware clock so it must have another device on the CCN communication bus broadcasting time. The controller will maintain its own time once it has received time as long as it has power and will send a request for time once a minute until it receives time when it has lost power and power is restored. The controller will control to unoccupied setpoints until it has received a valid time. The controller must have valid time in order to perform any broadcast function, follow an occupancy schedule, perform IAQ pre--occupancy purge and many other functions as well. The following secti ons describe the operation for the functions of the PremierLink controller.

Indoor Fan — The indoor fan will be turned on whenever any one of the following conditions are met:

S If the PremierLink controll er is in the occupied mode and

ASHRAE 90.1 Supply Fan is configured for Yes in the CONFIG table. This will be determined by its own internal occupanc y schedule if it i s programmed to follow its local schedule or broadcast its local schedule as a global schedule, or following a globa l schedule broadcast by another device.

S If PremierLink controller is in the occupied mode and

ASHRAE 90.1 Supply Fan is configured for No and there is a hea t or cool demand (fan auto mode)

S If the PremierLink controll er is in the occupied mode and

ASHRAE 90.1 Supply Fan is configured for Yes when Linkage is active and the Linkage Coordinator device is sending an oc cupied mode flag

S When Temperature Compensated Start is active

S When Free Cool is active

S When Pre--Occupancy Purge is active

S Whenever there is a demand for cooling or heating in the

unoccupied mode

S Whenever the Remote Contact input is configured for

Remote Contact (RC_DC=1 in SERVICE table) and it is closed or the point is forced Closed via communications in the STATUS01 points display table (remote contact closed = occupied, remote contact open = unoccupied)

S W henever the H3_EX_RV point is configure d for

Dehumidification (AUXOUT=5 in CONFIG table) and it is in the unoccupied mode and t he indoor RH exceeds the unoccupied humidity setpoint

S Whenever the Supply Fan Relay point is forced On in the

STATUS01 points display table

The fan will also continue to run as long as compressors are on when transitioning from occupied to unoccupied with the exception of Fire Shutdown m ode. If the Fire Shutdown input point is closed or forced in the STATUS01 points display table, the fan will be shutdown immediately regardless of the occupancy state or demand.

The PremierLink controller has an optional Supply Fan Status input to provide proof of airflow. If this is enabled, the point will look for a contact closure whenever the Supply Fan Relay is on. If the input is not enabled, then it will always be the same state as the Supply Fan Relay. The cooling, economizer and heating routines will use this input point for fan status.

Cooling — The compressors are controlled by the Cooling Control Loop that is used to calculate the desired SAT needed to satisfy the space. It will compare the SPT to the Occupied Cool Setpoint (OCSP) + the T56 slider offset (STO) when occupied and the Unoccupied Cool Setpoint (UCSP + Unoccupied Cooling Deadband) if unoccupied to calculate a Cooling Submaster Reference (CCSR) that is then used by the staging algorithm (Cooling submaster loop) to calculate the required number of cooling stages. The economizer, if available, will be used as the first stage of cooling in addition to the compressors. This loop runs every minute. The following conditions must be met in order for this algorithm to run:

S i ndoor fan has been ON for at least 30 seconds

S heat mode is not active and the time guard between

modes equals zero.

S mode is occupied or the Temperature Compensated Start

or Cool mode is active

S SPT reading is available and > (OCSP + STO)

S If mode is unoccupied and t he SPT > (UCSP +

Unoccupied Cooling Deadband). The indoor fan will be turned on by the staging algorithm.

S OAT > DXLOCK or OAT DX Lockout is disabled

If all of the above conditions are met, t he CCSR will be calculated, otherwise it is set to its maximum value and DX stages is set to 0. If only the last condition is not true and an economizer is available, it will be used to cool the space.

The submaster loop uses the CCSR com pared to the actual SAT to determine the required number of capacity stages to satisfy the load. There is a programmable minimum internal time delay of 3 to 5 minutes on and 2 to 5 minutes off for the compressors to prevent short cycling. There is also a 3--minute time delay before bringing on the second stage compressor. If the PremierLink controller is configured for Heat Pump and AUXOUT is configured for Reversing Valve Cool, the H3_EX_RV output will energize 2 seconds after the first compressor is energized and stay energized until there is a demand for heat. If AUXOUT is configured for Reversing Valve Heat, then the H3_EX_RV contact will be deenergized when there is

a demand for cooling. An internal 5 to 10--minute user-- programmable time guard between modes prevents rapid cycling between modes when used in a single zone application. The Time Guard is lowered to 3 minutes when Linkage is active to allow the 3Vt linkage coordinator to have better control of the Premier--Link controller when used as the air source for the 3V control system.

Table 13 indicates the number of stages available. The staging algorithm looks at the number of stages available based the number of cool stages configured in the SERVICE configuration table. The algorithm will skip the economizer if it is not available and turn on a compressor.

Table 13 – Available Cooling Stages

NUMBER OF

STAGES

Compressor 1 Off Off On On Compressor 2 Off Off Off On

* If conditions are suitable for economizer operation.

(ECONOMIZER*)

2 3

Any time the compressors are running, the PremierLink controller will lockout the compressors if the SAT becomes too low. These user configurable settings are found in the SERVICE configuration table:

Compressor 1 Lockout at SAT < SATLO1 (50 to 65_F) (default is 55_F)

Compressor 2 Lockout at SAT < SATLO2 (45 to 55_F) (default is 50_F)

After a compressor is locked out, it may be started again after a normal time--guard period and the supply air temperature has increased at least 8_F above the lockout setpoint.

Dehumidification — The PremierLink controller will provide occupied and unoccupied dehumidification control when AUXOUT = 5 in the CONFIG table and is installed on HVAC units that are equipped with additional controls and accessories to accomplish this function. This function also requires a space relative humidity sensor be installed on the OAQ/IRH input.

When in the occupied mode and the indoor relative humidity is greater then the Occupied High Humidity setpoint, then the H3_EX_RV output point will be energized. When in the unoccupied mode and indoor relative humidity is greater then the Unoccupied High Humidity setpoint, then the H3_EX_RV output point and supply fan output will be energized. There is a fixed 5% hysteresis that the indoor relative humidity must drop below the active setpoint to end the dehumidification mode and deenergize the H3_EX_RV output. If the PremierLink controller is in the unoccupied mode, then the fan relay will deenergize if there is no other mode requiring to the fan to be on. This function will not energize mechani cal cooling as a result of the indoor relative humidity exceeding either setpoint.

A high humidity alarm will be generated if the indoor relative humidity exceeds the high humidity setpoint by the amount configured in t he Control Humidity Hysteresis in the ALARMS table for 20 minutes. The alarm will

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return to normal when the indoor relative humidity drops 3% below the active humidit y setpoint.

Economizer — The economizer dampers are used to provide free cooling and indoor air quality if optional CO2 sensor is installed and when the outside conditions are suitable. Temperature control is accomplished by controlling the SAT to a certain level determined by the Economizer PID Loop by ca lculating a submaster reference (ECONSR) value. This algorithm will calculate the submaster reference temperature (ECONSR) based on OAT and enthalpy conditions and cooling requirements. The ECONSR value is then passed to the Economi zer Submaster Loop, which will modulate dampers to maintain SAT at ECONSR level.

into account the cooling effect that has just been turned on and not return to the value require before the cooling was added. This will prevent the economizer from causing premature off cycles of compressors while maintaining the low SAT temperature setpoint for the number of stages active. In addition to preventing compressor short cycling, by using return air across the evaporator coil just after the compressor has started allows for increased refrigerant flow rates providing for better oil return of any oil washed out during compressor start-- up.

If the OAT > 68_F and OAT < SPT and the number of DX stages requested is > 0 by the staging algorithm, then ECONSR is set to its minimum value 48_F and the damper will go to 100% open.

The following conditions are required to determine if economizer cooling is possible:

S Indoor fan has been on for at least 30 seconds

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S Enthalpy is low

S SAT reading is available

S OAT reading is available

S SPT reading is available

S OAT ≤ SPT

S OAT < OATMAX (OATMAX default is 75_F)

S Economizer position is NOT forced

If any of the above conditions are not met, the ECONSR will be set to its MAX limit of 120_F and the damper will go to its configured minimum position. The minimum damper position can be overridden by the IAQ routine described later in this section.

The calculation for ECONSR is as follows:

ECONSR = PID function on (setpoint -- SPT), where: setpoint = ((OCSP+STO) + (OHSP+STO))/2 when

NTLO (Unoccupied Free Cool OAT Lockout) < OAT < 68_F

setpoint = (OCSP+STO) -- 1 when OAT ≤ NTLO setpoint = (OHSP+STO) + 1 when OAT ≥ 68_F

The actual damper position (ECONPOS) is the result of the following calculation. Values represented in the right side of the equation can be found in the SERVICE configuration table descriptions in this manual. Note that that the OAT is taken into consideration to avoid large changes in damper position when the OAT is cold:

ECONPOS = SubGain x (ECONSR--SAT) + CTRVAL where SubGain = (OAT -- TEMPBAND) / (ESG + 1)

If the OAT < DXLOCK (DX Cool Lockout setpoint) the n the damper will be modula ted to maintain the SAT at the ECONSR value.

If the OAT is between DXLOCK and 68_F (DXLOCK < OAT < 68_F) and additional cooling is required, the economizer will close the to minimum position for three minutes, the economizer integrator will then be reset to 0 and begin modulating to maintain the SASP after the stage has been energized for about 90 seconds. This will allow the economizer to calculate a new ECONSR that takes

If the Auxiliary Relay is configured for exhaust fan (AUXOUT = 1) in the CONFIG configuration table and Continuous Power Exhaust (MODPE) is Enable in the SERVICE configuration table, then the AUXO output (HS3) will be energized whenever the PremierLink controller is in the occupied mode. If the MODPE is disabled then AUXO output will be energized based on the Power Exhaust Setpoint (PES) in the SETPOINT table.

Heating — The heat stages are controlled by the Heating Control Loop, which is used to calculate the desired SAT needed to satisfy the space. It will compare the SPT to the Occupied Heat Setpoint (OHSP) + the T56 sli der offset (STO) when occupied and the Unoccupied Heat Setpoint (UHSP -- Unoccupied Heating Deadband) if unoccupied to calculate a Staged Heat Submaster Reference (SHSR). The heat staging algorithm compares the SHSR to the actual SAT to calculate the required number of heating stages to satisfy the load. This loop runs eve ry 40 seconds. The following conditions must be met in order for this algorithm to run:

S Indoor fan has been ON for at least 30 seconds.

S Cool mode is not active and the time guard between

modes equals zero.

Mode is occupied or the Temperature Compensated Start

or Heat mode is active.

S SPT reading is available and < (OHSP + STO).

S If it is unoccupied and the SPT < (UHSP -- Unoccupied

Heating Deadband). The indoor fan will be turn on by the staging algorithm.

When all of the above conditions are met, the SHSR is calculated and up to 3 stages of heat will turned on and off to satisfy to maintain the SAT = SHSR. If any of the above conditions are not met, the SHSR is set to its minimum value of 35_F.

The Staged Heat Submaster Reference (SHSR) is calculated as follows:

SHSR = Heating PID func tion on (error) where error = (OHSP + STO) -- Space Temperature

The Maximum SHSR is determined by the SATHI configuration. If the supply--air temperature exceeds the SATHI configuration value, then the heat stages will turn

off. Heat staging will resume after a delay to allow the supply--air temperature to drop below the SATHI value.

The maximum number of stages available is dependent on the type of heat and the number of stages programmed in the CONFIG and SERVICE configuration tables. Staging will occur as follows for gas electric units, Carrier heat pumps with a defrost board, or cooling units with electric heat:

For Heating PID STAGES = 2

HEAT STAGES = 1 (50% capacity) -- energize HS1. HEAT STAGES = 2 (100% capacity) -- energize HS2.

For Heating PID STAGES = 3 and AUXOUT = HS3

HEAT STAGES = 1 (33% capacity if) -- energize HS1 HEAT STAGES = 2 (66% capacity) -- energize HS2 HEAT STAGES = 3 (100% capacity) -- energize HS3

Staging will occur as follows For heat pump units with AUXOUT configured as reversing valve:

For Heating PID STAGES = 2 and AUXOUT = Reversing Valve Heat (the H3_EX_RV output will stay energized until there is a cool demand) HEAT STAGES = 1 (50% capacity) shall energize CMP1, CMP2, RVS.

HEAT STAGES = 2 (100% capacity) shall energize HS1 and HS2.

Heating PID STAGES = 3 and AUXOUT = Reversing Valve Heat (the H3_EX_RV output will stay energized until there is a cool demand)

HEAT STAGES = 1 (33% capacity if) shall energize CMP1, CMP2, RVS

HEAT STAGES = 2 (66% capacity) shall energize HS1

HEAT STAGES = 3 (100% capacity) shall energize HS2

If AUXOUT is configured for Reversing Valve Cool, then the H3_EX_RV contact will be deenergized when there is a demand for heating. The heat stages will be cycled to temper the SAT so that it will be between the SPT and the SPT + 10_F (SPT < SAT < (SPT + 10_F)) if:

S the number of heat stages calculated is zero

S the OAT < 55_F

S an IAQ sensor is installed

S the IAQ Minimum Damper Position > minimum damper

position

S and the SAT < SPT --10_F.

There is also a SAT tempering routine that will act as SAT low limit safety to prevent the SAT from becoming too cold should the economizer fail to close. One stage of heating will be energized if it is not in the Cooling or Free Cooling mode and the OAT is below 55_F and the SAT is below 40_F. It will deenergize when the SAT > (SPT + 10_F).

Indoor Air Quality — If the optional indoor air quality (IAQI) sensor is installed, the PremierLink controller will maintain indoor air quality within the space at the user configured differential setpoint (IAQD) in the CONFIG

configuration table. The setpoint is the differenc e between the IAQI and an optional outdoor air quality sensor (OAQ). If the OAQ is not present then a fixed value of 400 ppm is used. The actual space IAQ setpoint (IAQS) is calculated as follows:

IAQS = IAQD + OAQ (OAQ = 400 ppm if not present)

As air quality within the space changes, the minimum position of the economizer damper will be changed also thus allowing more or less outdoor air into the space depending on the relationship of the IAQI to the IAQS. The IAQ algorithm runs every 30 seconds and ca lculates IAQ minimum position value using a PID loop on the IAQI deviation from the IAQS. The IAQ minimum position is then compared against the user configured minimum position (MDP) and the greatest value becomes the final minimum damper position (IQMP). If the calculated IAQ minimum position is greater than the IAQ maximum damper position (IAQMAXP) decision in the SERVICE configuration table, then it will be clamped to IAQMAXP value.

If IAQ is configured for low priority, the positioning of the economizer damper can be overridden by comfort requirements. If the SPT > OCSP + 2.5 or the SPT < OHSP -- 2.5 then IAQ minimum position becomes 0 and the IQMP = MDP. The IAQ mode will resume when the SPT ≤ OCSP + 1.0 and SPT ≥ OHSP -- 1.0.

If IAQ is configured for high priority and the OAT < 55_F and the SAT < (SPT -- 10_F), the algorithm will enable the heat stages to maintain the SAT between the SPT and the SPT + 10_F.

IAQ Pre--Occupancy Purge — This function is designed to purge the space of airborne contaminants that may have accumulated 2 hours prior to the beginning of the next occupied period. The maximum damper position that will be used is temperature compensated for cold whether conditions and can be pre--e mpted by Temperature Compensated Start function. For pre--occupancy to occur, the following conditions must be met:

S IAQ Pre-- Occ upancy Purge option is enabled in the

CONFIG configuration table

S Unit is in the unoccupied state

S Current Time is valid

S Next Occupied Time is valid

S Time is within 2 hours of next Occupied period

S Time is within Purge Duration (user--defined 5 to 60

minutes in the CONFIG configuration table)

S OAT Reading is available

If all of the above conditions are met, the economizer damper IQMP is temporarily overridden by the pre--occupancy damper position (PURGEMP). The PURGEMP will be set to one of the following conditions based on atmosphe ric conditions and the space temperature:

S If the OAT ≥ NTLO (Unoccupied OAT Lockout

Temperature) and OAT < 65_F and OAT is less than or

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equal to OCSP and Enthalpy = Low then PURGEMP = 100%.

S If the OAT < NTLO then PURGEMP = LTMP (Low

Temperature Minimum Position -- defaults to 10%)

S If the OAT > 65_For(OAT≥ NTLO and OAT > OCSP)

or Entha lpy = High then PURGEMP = HTMP (High Temperature Minimum Position defaults to 35%).

The LTMP and HTMP are user adjustable values from 0 to 100% in the SETPOINT table. Whenever PURGEMP results in a number greater than 0%, the IAQ pre--occupancy purge mode will be enabled turning on the Indoor Fan Relay and setting the economizer IQMP to the PURGEMP value. When IAQ pre--occupancy mode is not active PURGEMP = 0%.

Unoccupied Free Cooling — Unoccupied free cool

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function will start the indoor fan during unoccupied times in order to cool the space with outside air. This function i s performed to delay the need for mechanical cooling when the system enters the occupied period. Depe nding on how Unoccupied Free Cooling is configured, unoccupied mode can occur at a ny time in the unoccupied time period or 2 to 6 hours prior to the next occupied time. Once the space has been sufficiently cooled during this cycle, the fan will be stopped. In order to perform unocc upied free cooling all of the following conditions must be m et:

S NTEN option is enabled in the CONFIG configuration

table

S Unit is in unoccupied state

S Current time of day is valid

S Temperature Compensated Start mode is not acti ve

S COOL mode is not active

S HEAT m ode is not active

S SPT reading is available

S OAT reading is available

S Enthalpy is low

S OAT > NTLO (with 1_F hysteresis) and < Max Free Cool

setpoint

If any of the above conditions are not met, Unoccupied Free Cool mode will be stopped, otherwise, the mode will be controlled as follows:

The NTFC setpoint (NTSP) is determined as NTSP = (OCSP + OHSP) / 2

The Unoccupied Free Cool mode will be started when:

SPT > (NTSP + 2_F) and SPT > (OAT + 8_F)

The Unoccupied Free Cool mode will be stopped when:

SPT < NTSP or SPT < (OAT + 3_F)

Temperature Compensated Start — Thi s function will run when the controller is in unoccupied state and will calculate early start bias time (SBT) based on space temperature deviation from oc cupied setpoints in minutes per degree. The following conditions will be met for the function to run:

S Unit is in unoccupied state

S Next occupied time is valid

S Current time of day is valid

S Valid space temperature reading is available (from sensor

or linkage thermostat)

S Cool Start Bias (KCOOL) and Heat Bias Start (KHEAT)

> 0 in the CONFIG configuration table

The SBT is calculated by one of the following formulas depending on temperature demand:

If SPT > OCSP then SBT = (SPT -- OCSP) * KCOOL If SPT < OHSP then SPT = (OHSP -- SPT) * KHEAT.

The calculated start bias time can range from 0 to 255 minutes. When SBT is greater than 0 the function will subtract the SBT from the next occupied time to calculate a new start time. When a new start time is reached, the Temperature Compensated Start mode is started. This mode energizes the fan and the unit will operate as though it is in occupied state. Once set, Temperature Compensated Start mode will stay on until the unit returns to occupied state. If either Unoccupied Free Cool or IAQ Pre--Occupancy mode is act ive when Temperature Compensated Start begins, their mode will end.

Door Switch — The Door Switch function is designed to disable mechanical heating and cooling outputs when the REMOCC contact input is closed (in the ON state) after a programmed time delay. The fan will continue to operate based on the current mode and the ASHRAE 90. 1 Supply Fan setting. The delay is programmable from 2 to 20 minutes by setting the Remote Cont/Door Switch decision in the SERVICE ta ble to a value equal to the number of minutes desired. When the contact is open (in the OFF state), the PremierLink controller will resume normal temperature control.

This application is designed for use in schools or other public places where a door switch can be installed to monitor the opening of a door for an extended period of time. The controller will disable mechanical cooling and heating when the door is open for a programmed amount of time.

This function can also be used to monitor a high condensate level switch when installed on a water source heat pump to disable mechanic cooling in case of a plugged evaporator condensate pan drain. Linkage — The Linkage function in the PremierLink controller is available for applications using a Linkage thermostat or the 3V control system. If using the Linkage thermostat, both the PremierLink controller and the stat must be on the same CCN bus. When used as the air source for a 3V control system, the PremierLink controller is not required to be on the same CCN bus but it is recommended. Linkage will be active when it is initiated from the Linkage thermostat or the 3V Linkage Coordinator through CCN communications and requires no configuration. Only one device can be linked to the PremierLink controller.

Once Linkage is active, the PremierLink controller’s own SPT, temperature setpoints, and occupancy are ignored and the controller will use the i nformation provided by the remote linkage device. The following information will be received from the remote linked device and can be viewed in the maintenance display table:

S Supervi sory Element

S Supervi sory Bus

S Supervi sory Block

S Average Occupied Heat Setpoint

S Average Occupied Cool Setpoint

S Average Unoccupied Heat Setpoint

S Average Unoccupied Cool Setpoint

S Average Zone Temp

S Average Occupied Zone Temp

S Occupancy Status

In return, the PremierLink controller will provide its SAT and operating mode to the linked device.

It will convert its operating modes to Linkage modes. See Table 14.

Table 14 – Linkage Modes

ROOFTOP MODE VALUE LINKAGE MODE

Demand Limit N/A N/A

Heat 3 Heating

Cool or Free Cooling 4 Cooling

IAQ Control N/A N/A

Temp . C omp e n sa t ed

Start Heat

Temp . C omp e n sa t ed

Start Cool

IAQ Purge 6 Pressurization

Occupied (Indoor Fan

ON)

Unoccupied Free Cool 5 Unoccupied Free Cooling

Fire Shutdown 7 Evac

Factory/Field Test 1 Off

Off 1 Off

2 W a r m --- u p

4 Cooling

The PremierLink controller will generate a Linkage Communication Failure alarm if a failure occurs for 5 consecutive minutes once a Linkage has previously been established. It will then revert back to its own SPT, setpoints and occupancy schedule for control. For this reason, Carrier strongly recommends that an SPT be installed in the space on open plenum systems or in the return air duct of ducted return air systems to provide continued backup operation. When Linkage communication is restored, the controller will generate a return to normal.

For more information on how the PremierLink controller is used in conjunction with the Carrier 3V control system, contact your CCN controls representative.

IMPORTANT: The PremierLink controller should not be used as a linked air source in a ComfortIDt VAV system. The ComfortID VAV system will NOT function correctly when applied with a PremierLink controller as the air source, resulting i n poor comfort control and possible equipment malfunction.

NOTE: The PremierLink controller can be used as an air source in a 3V Pressure Independent (PI) System (a 3V Linkage Coordinator with ComfortID PI Zone Controllers), but it should not be used as an air source with ComfortID controllers unless a 3V zone controller is used as the Linkage Coordinator. Contact your Carrier CCN controls representative for assistance.

Demand Limit — If the demand limit option is enabled, the control will receive and accept Redline Alert and Loadshed commands from the CCN loadshed controller. When a redline alert is received, the control will set the maximum stage of capacity equal to the stage of capacity that the unit is operating at when the redline alert was initiated.

When loadshed command is received the control will reduce capacity as shown in Table 15.

Table 15 – Loadshed Command — Gas and Electric

Heat Units

CURRENT CAPACITY NEW CAPACITY

CMP1 DX Cooling OFF

CMP1+CMP2 CMP1

HS1 Heat OFF

HS1+HS2 (+HS3) HS1

The controller will have a maximum demand limit timer of 1 hour that prevents the unit from staying in load shed or redline alert longer than 1 hour in the event the controller loses communication with the network load shed module. Should the maximum demand limit timer expire prior to receiving the loadshed device command from CCN, the control will stop demand limit mode and return to normal operation.

FASTENER TORQUE VALUES

See Table 16 for torque values.

50TC

Table 16 – Torque Values

Supply fan motor mounting 1 2 0 + / --- 1 2 i n --- l b s Supply fan motor adjustment plate 1 2 0 +/ --- 1 2 in --- l b s Motor pulley setscrew 7 2 + / --- 5 i n --- l b s Fan pulley setscrew 7 2 + / --- 5 i n --- l b s Blower wheel hub setscrew 7 2 + / --- 5 i n --- l b s Bearing locking collar setscrew 6 5 --- 7 0 i n --- l b s Compressor mounting bolts 6 5 --- 7 5 in --- l b s Condenser fan motor mounting bolts 2 0 +/ --- 2 in --- l b s Condenser fan hub setscrew 8 4 +/ --- 1 2 in --- l b s

50TC

Fig. 65 -- 50TC Typical Unit Wiring diagram -- Power (A06)

C08393

50TC

C08002

Fig. 66 -- 50TC Unit Wiring Diagram -- Control (A06)

Model Number Nomenclature

Unit Heat Type Brand / Packaging

50 = Elec heat pkg rooftop 0=Standard

Tier / Model

TC = Entry tier (with Puron)

Heat Size A=None

--- = N o h e at C = N on --- f u s e d d isc

Refrig. System Options

50TC

A = Standard refrigeration system Service Options D=2comp.upgrade 0=None

Cooling Tons Intake / Exhaust Options

04 = 3 Ton A=None 05 = 4 Ton B=Tempeconow/barorelief 06 = 5 Ton F = Enthalpy econo w/ baro relief 07 = 6 Ton K = 2 pos damper w/ baro relief

APPENDIX I. MODEL NUMBER SIGNIFICANCE

123456789101112131415161718

5 0 T C -- A 0 6 A 0 A 5 A 0 A 0 A 0

____ ____ ____

1=LTL

Electrical Options

D=Thruthebase F = Non---fused & thru the base

1 = Unpowered convenience outlet 2 = Powered convenience outlet

Base Unit Controls

Sensor Options 0 = Electromechanical

A=None 1 = PremierLink DDC controller B = RA smoke detector 2 = Open protocol DDC controller C = SA smoke detector D=RA&SAsmokedetector Design Rev E=CO2sensor Factory assigned F = RA smoke detector & CO G = SA smoke detector & CO H=RA&SAsmokedetector&CO

Indoor Fan Options 6 = 460/3/60 1 = Standard static option 2 = Medium static option Coil Options (Outdoor Coil --- Indoor Coil) 3 = High static option A = Al/Cu --- Al/Cu

Voltage

1 = 575/3/60 3 = 208 --- 230/1/60 5 = 208 --- 230/3/60

B = P r e coat A l / C u --- A l / C u C = E coa t A l / C u --- A l / C u D=EcoatAl/Cu --- EcoatAl/Cu E = Cu/Cu --- Al/Cu F = Cu/Cu --- Cu/Cu

Serial Number Format

POSITION NUMBER 1 2 3 4 5 6 7 8 9 10

TYPICAL 1 2 0 8 G 1 2 3 4 6

POSITION DESIGNATES

1---2 Week of manufacture (fiscal calendar 3---4 Year of manufacture (“08” = 2008)

5 Manufacturing location (G = ETP, Texas, USA)

6--- 10 Sequential number

APPENDIX II. PHYSICAL DATA

Physical Data (Cooling) 3 -- 6 TONS

50TC**04 50TC**05 50TC**06 50TC**07

Refrigeration System

#Circuits/#Comp./Type 1/1/Scroll 1/1/Scroll 1/1/Scroll 1/1/Scroll

Puron (R---410a) charge A/B (lbs) 5.6 8.5 10.7 14.1

Oil A/B (oz) 25 42 42 56

Metering Device Acutrol Acutrol Acutrol Acutrol

High--- press. Trip / Reset (psig) 630 / 505 630 / 505 630 / 505 630 / 505

Low--- press. Trip / Reset (psig) 54 / 117 54 / 117 54 / 117 54 / 117

Evap. Coil

Material Cu / Al Cu / Al Cu / Al Cu / Al

Coil type 3/8” RTPF 3/8” RTPF 3/8” RTPF 3/8” RTPF

Rows / FPI 2 / 15 2/15 4/15 4/15

Tota l Fac e A r ea ( f t2)5.5 5.5 5.5 7.3

Condensate Drain Conn. Size 3/4” 3/4” 3/4” 3/4”

Evap. Fan and Motor

Motor Qty / Drive Type 1/Belt

Max BHP 1.2

RPM Range 560 --- 854 560---854 770--- 1175 ---

1phase

Standard Static

3phase

Standard Static

1phase

Medium Static

3phase

Medium Static

3phase

High Static

Motor Frame Size 48 48 48 ---

Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal ---

Fan Diameter (in) 10 x 10 10 x 10 10 x 10 ---

Motor Qty / Drive Type 1/Belt 1/Belt 1/Belt 1/Belt

Max BHP 1.2 1.2 1.2 2.4

RPM Range 560 --- 854 560---854 770--- 1175 1073 --- 1457

Motor Frame Size 48 48 48 56

Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal 1/Centrifugal

Fan Diameter (in) 10 x 10 10 x 10 10 x 10 10 x 10

Motor Qty / Drive Type 1/Belt 1/Belt 1/Belt ---

Max BHP 1.2 1.2 1.5 ---

RPM Range 770- -- 1175 770---1175 1035--- 1466 ---

Motor Frame Size 48 56 56 ---

Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal ---

Fan Diameter (in) 10 x 10 10 x 10 10 x 10 ---

Motor Qty / Drive Type 1/Belt 1/Belt 1/Belt 1/Belt

Max BHP 1.2 1.2 2.4 2.9

RPM Range 770- -- 1175 770---1175 1035--- 1466 1173--- 1788

Motor Frame Size 48 48 56 56

Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal 1/Centrifugal

Fan Diameter (in) 10 x 10 10 x 10 10 x 10 10 x 10

Motor Qty / Drive Type 1/Belt 1/Belt 1/Belt 1/Belt

Max BHP 2.4 2.4 2.9 3.7

RPM Range 1035--- 1466 1035--- 1466 1303---1687 1474---1788

Motor Frame Size 56 56 56 56

Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal 1/Centrifugal

Fan Diameter (in) 10 x 10 10 x 10 10 x 10 10 x 10

1/Belt 1/Belt ---

1.2 1.2 ---

50TC

Cond. Coil

Cond. fan / motor

Filters

Material Cu / Al Cu / Al Cu / Al Cu / Al

Coil type 3/8” RTPF 3/8” RTPF 3/8” RTPF 3/8” RTPF

Rows / FPI 1 / 17 2/17 2/17 2/17

Tota l Fac e A r ea ( f t2) 14.6 12.6 16.5 21.3

Qty / Motor Drive Type 1/ Direct 1/ Direct 1/ Direct 1/ Direct

Motor HP / RPM 1/4 / 1100 1/4 / 1100 1/4 / 1100 1/4 / 1100

Fan diameter (in) 22 22 22 22

RAFilter#/Size(in) 2/16x25x2 2/16x25x2 2/16x25x2 4/16x16x2

OA inlet sc reen # / Size (in) 1/20x24x1 1/20x24x1 1/20x24x1 1/20x24x1

APPENDIX III. FAN PERFORMANCE

General Fan Performance Notes:

1. Interpolation is permissible. Do not extra polate.

2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static

pressure caused by any FIOPs or accessories.

3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories

may add static pressure losses. Selection software is available, through your salesperson, to help you select the best motor/drive combination for your a pplication.

4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would

work, Carrier recommended the lower horsepower option.

5. For information on the electrical properties of Carrier’s motors, please see the Electrical information section of this

book.

6. For more information on the performance limits of Carrier’s motors, see the application data section of this book.

50TC

APPENDIX III. FAN PERFORMANCE (cont.)

50TC**04 1 Phase 3 Ton Horizontal Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

FieldSuppliedDrive

900 554 0.14 681 0.22 783 0.32 870 0.42 947 0.53

975 575 0.16 701 0.25 801 0.35 888 0.45 965 0.57 1050 597 0.18 721 0.28 821 0.38 906 0.49 983 0.61 1125 620 0.21 741 0.31 840 0.42 925 0.54 1001 0.66 1200 643 0.23 762 0.35 860 0.46 944 0.58 1020 0.71 1275 666 0.27 784 0.38 880 0.50 964 0.63 1039 0.76 1350 690 0.30 805 0.42 900 0.55 983 0.68 1058 0.82 1425 714 0.34 827 0.47 921 0.60 1003 0.74 1077 0.88 1500 738 0.38 849 0.52 942 0.66 1024 0.80 1097 0.95

CFM

900 1017 0.64 1082 0.76 1143 0.88 1200 1.01 1254 1.14

975 1035 0.68 1100 0.81 1160 0.93 1217 1.07 1271 1.20 1050 1053 0.73 1117 0.86 1177 0.99 1234 1.13 --- --- 1125 1071 0.78 1135 0.92 1195 1.05 1251 1.19 --- --- 1200 1089 0.84 1153 0.98 1212 1.12 --- --- --- --- 1275 1107 0.90 1171 1.04 1230 1.19 --- --- --- --- 1350 1126 0.96 1189 1.11 --- --- --- --- --- --- 1425 1145 1.03 1208 1.18 --- --- --- --- --- --- 1500 1164 1.10 --- --- --- --- --- --- --- ---

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field --- supplied fan pulley (part number KR11AG006) and belt (part number KR30AE039).

2. Recommend using field---supplied motor pulley (part number KR11HY161) and belt (part number KR30AE035).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

Medium Static Option

Standard Static Option Medium Static Option

50TC

50TC**04 1 Phase 3 Ton Vertical Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

FieldSuppliedDrive

900 566 0.14 690 0.23 791 0.32 879 0.42 957 0.52

975 590 0.17 711 0.26 811 0.36 897 0.46 975 0.57 1050 615 0.19 733 0.29 831 0.39 916 0.50 993 0.62 1125 640 0.22 755 0.33 851 0.43 936 0.55 1012 0.67 1200 666 0.25 778 0.36 873 0.48 956 0.60 1031 0.72 1275 692 0.29 802 0.41 894 0.53 976 0.65 1051 0.78 1350 719 0.33 825 0.45 916 0.58 997 0.71 1071 0.84 1425 746 0.37 850 0.50 939 0.63 1019 0.77 1091 0.91 1500 774 0.42 875 0.55 962 0.69 1041 0.83 1112 0.98

CFM

900 1029 0.63 1095 0.75 1157 0.86 1216 0.99 1272 1.11

975 1046 0.68 1112 0.80 1174 0.92 1232 1.05 1287 1.18 1050 1064 0.73 1129 0.86 1190 0.98 1248 1.11 --- --- 1125 1082 0.79 1147 0.92 1208 1.05 1265 1.18 --- --- 1200 1100 0.85 1165 0.98 1225 1.12 --- --- --- --- 1275 1119 0.91 1183 1.05 1243 1.19 --- --- --- --- 1350 1139 0.98 1202 1.12 --- --- --- --- --- --- 1425 1159 1.05 1221 1.20 --- --- --- --- --- --- 1500 1179 1.13 --- --- --- --- --- --- --- ---

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field --- supplied fan pulley (part number KR11AG006) and belt (part number KR30AE039).

2. Recommend using field---supplied motor pulley (part number KR11HY161) and belt (part number KR30AE035).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

Medium Static Option

Standard Static Option Medium Static Option

APPENDIX III. FAN PERFORMANCE (cont.)

50TC**04 3 Phase 3 Ton Horizontal Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

FieldSuppliedDrive

900 554 0.14 681 0.22 783 0.32 870 0.42 947 0.53

50TC

CFM

900 1017 0.64 1082 0.76 1143 0.88 1200 1.01 1254 1.14

975 1035 0.68 1100 0.81 1160 0.93 1217 1.07 1271 1.20 1050 1053 0.73 1117 0.86 1177 0.99 1234 1.13 1288 1.27 1125 1071 0.78 1135 0.92 1195 1.05 1251 1.19 1305 1.34 1200 1089 0.84 1153 0.98 1212 1.12 1269 1.26 1322 1.41 1275 1107 0.90 1171 1.04 1230 1.19 1286 1.33 1340 1.49 1350 1126 0.96 1189 1.11 1249 1.26 1304 1.41 1357 1.57 1425 1145 1.03 1208 1.18 1267 1.33 1323 1.49 1375 1.66 1500 1164 1.10 1227 1.25 1285 1.41 1341 1.58 1394 1.75

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field --- supplied fan pulley (part number KR11AG006) and belt (part number KR30AE039).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option High Static Option

Standard Static Option Medium Static Option

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

50TC**04 3 Phase 3 Ton Vertical Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

FieldSuppliedDrive

900 566 0.14 690 0.23 791 0.32 879 0.42 957 0.52

CFM

900 1029 0.63 1095 0.75 1157 0.86 1216 0.99 1272 1.11

975 1046 0.68 1112 0.80 1174 0.92 1232 1.05 1287 1.18 1050 1064 0.73 1129 0.86 1190 0.98 1248 1.11 1304 1.25 1125 1082 0.79 1147 0.92 1208 1.05 1265 1.18 1320 1.32 1200 1100 0.85 1165 0.98 1225 1.12 1282 1.26 1337 1.40 1275 1119 0.91 1183 1.05 1243 1.19 1300 1.34 1354 1.49 1350 1139 0.98 1202 1.12 1262 1.27 1318 1.42 1372 1.57 1425 1159 1.05 1221 1.20 1280 1.35 1336 1.51 1390 1.66 1500 1179 1.13 1241 1.28 1300 1.44 1355 1.60 1408 1.76

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field --- supplied fan pulley (part number KR11AG006) and belt (part number KR30AE039).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option High Static Option

Standard Static Option Medium Static Option

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

APPENDIX III. FAN PERFORMANCE (cont.)

50TC**05 1 Phase 4 Ton Horizontal Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

1200 643 0.23 762 0.35 860 0.46 944 0.58 1020 0.71 1300 674 0.28 791 0.40 887 0.52 970 0.65 1045 0.78 1400 706 0.33 820 0.45 914 0.59 997 0.72 1071 0.86 1500 738 0.38 849 0.52 942 0.66 1024 0.80 1097 0.95 1600 771 0.44 1700 804 0.51 910 0.66 1000 0.82 1079 0.98 1151 1.14 1800 837 0.59 941 0.75 1029 0.91 1107 1.08 --- --1900 871 0.67 972 0.84 1059 1.02 1136 1.19 --- --2000 906 0.76 1004 0.94 1089 1.12 --- --- --- ---

CFM

1200 1089 0.84 1153 0.98 1212 1.12 --- --- --- --- 1300 1114 0.92 1177 1.06 --- --- --- --- --- --1400 1139 1.01 1202 1.15 --- --- --- --- --- --1500 1164 1.10 --- --- --- --- --- --- --- --1600 1190 1.20 --- --- --- --- --- --- --- --1700 --- --- --- --- --- --- --- --- --- --1800 --- --- --- --- --- --- --- --- --- --1900 --- --- --- --- --- --- --- --- --- --2000 --- --- --- --- --- --- --- --- --- ---

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field---supplied motor pulley (part number KR11HY161) and belt (part number KR30AE035).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option Medium Static Option

879

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option

0.59 971 0.74 1051 0.89 1124 1.04

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

50TC

50TC**05 1 Phase 4 Ton Vertical Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

1200 666 0.25 778 0.36 873 0.48 956 0.60 1031 0.72 1300 701 0.30 809 0.42 902 0.54 983 0.67 1057 0.80 1400 737 0.36 1500 774 0.42 875 0.55 962 0.69 1041 0.83 1112 0.98 1600 811 0.49 909 0.63 994 0.78 1071 0.93 1141 1.08 1700 849 0.57 943 0.72 1026 0.87 1101 1.03 1170 1.19 1800 887 0.65 978 0.81 1059 0.98 1133 1.14 --- --1900 926 0.75 1014 0.92 1092 1.09 --- --- --- --2000 965 0.86 1050 1.03 --- --- --- --- --- ---

CFM

Medium Static Option

1200 1100 0.85 1165 0.98 1225 1.12 --- --- --- --1300 1126 0.94 1189 1.07 --- --- --- --- --- --1400 1152 1.03 1215 1.17 --- --- --- --- --- --1500 1600 1206 1.24 --- --- --- --- --- --- --- --- 1700 1235 1.36 --- --- --- --- --- --- --- --- 1800 1264 1.48 --- --- --- --- --- --- --- --- 1900 1293 1.62 --- --- --- --- --- --- --- --- 2000 1324 1.77 --- --- --- ---

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field---supplied motor pulley (part number KR11HY161) and belt (part number KR30AE035).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option Medium Static Option

842

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1179 1.13 --- --- --- --- --- --- --- ---

0.48 932 0.61 1012 0.75 1085 0.89

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

--- --- --- ---

APPENDIX III. FAN PERFORMANCE (cont.)

50TC**05 3 Phase 4 Ton Horizontal Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

1200 643 0.23 762 0.35 860 0.46 944 0.58 1020 0.71 1300 674 0.28 791 0.40 887 0.52 970 0.65 1045 0.78 1400 706 0.33 820 0.45 914 0.59 997 0.72 1071 0.86 1500 738 0.38 849 0.52 942 0.66 1024 0.80 1097 0.95 1600 771 0.44 1700 804 0.51 910 0.66 1000 0.82 1079 0.98 1151 1.14 1800 837 0.59 941 0.75 1029 0.91 1107 1.08 1178 1.25 1900 871 0.67 972 0.84 1059 1.02 1136 1.19 1206 1.37 2000 906 0.76 1004 0.94 1089 1.12 1165 1.31 1234 1.49

50TC

CFM

1200 1089 0.84 1153 0.98 1212 1.12 1269 1.26 1322 1.41 1300 1114 0.92 1177 1.06 1236 1.21 1292 1.36 1346 1.52 1400 1139 1.01 1202 1.15 1261 1.31 1316 1.47 1369 1.63 1500 1164 1.10 1227 1.25 1285 1.41 1341 1.58 1394 1.75 1600 1190 1.20 1252 1.36 1311 1.53 1366 1.70 1418 1.87 1700 1217 1.31 1278 1.48 1336 1.65 1391 1.83 1443 2.01 1800 1244 1.42 1305 1.60 1362 1.78 1416 1.97 1468 2.15 1900 1271 1.55 1331 1.73 1388 1.92 1442 2.11 1494 2.31 2000 1298 1.68 1358 1.87 1415 2.07 1468 2.27 --- ---

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field--- supplied fan pulley (part number KR11AZ506), motor pulley (part number KR11HY181) and belt (part number KR30AE041).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option Medium Static Option

879

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option High Static Option

0.59 971 0.74 1051 0.89 1124 1.04

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

50TC**05 3 Phase 4 Ton Vertical Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

1200 666 0.25 778 0.36 873 0.48 956 0.60 1031 0.72 1300 701 0.30 809 0.42 902 0.54 983 0.67 1057 0.80 1400 737 0.36 1500 774 0.42 875 0.55 962 0.69 1041 0.83 1112 0.98 1600 811 0.49 909 0.63 994 0.78 1071 0.93 1141 1.08 1700 849 0.57 943 0.72 1026 0.87 1101 1.03 1170 1.19 1800 887 0.65 978 0.81 1059 0.98 1133 1.14 1200 1.31 1900 926 0.75 1014 0.92 1092 1.09 1164 1.26 1231 1.44 2000 965 0.86 1050 1.03 1127 1.21 1197 1.39 1262 1.58

CFM

Medium Static Option High Static Option

1200 1100 0.85 1165 0.98 1225 1.12 1282 1.26 1337 1.40 1300 1126 0.94 1189 1.07 1249 1.22 1306 1.36 1360 1.51 1400 1152 1.03 1215 1.17 1274 1.32 1330 1.48 1384 1.63 1500 1600 1206 1.24 1268 1.40 1326 1.56 1381 1.73 1433 1.90 1700 1235 1.36 1295 1.52 1352 1.69 1407 1.87 1459 2.04 1800 1264 1.48 1323 1.66 1380 1.84 1434 2.02 1485 2.20 1900 1293 1.62 1352 1.80 1408 1.99 1461 2.17 1512 2.37 2000 1324 1.77 1381 1.96 1436 2.15

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field--- supplied fan pulley (part number KR11AZ506), motor pulley (part number KR11HY181) and belt (part number KR30AE041).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option Medium Static Option

842

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1179 1.13 1241 1.28 1300 1.44 1355 1.60 1408 1.76

0.48 932 0.61 1012 0.75 1085 0.89

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

1489 2.34 --- ---

APPENDIX III. FAN PERFORMANCE (cont.)

50TC**06 1 Phase 5 Ton Horizontal Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

FieldSuppliedDrive

1500 724 0.33 837 0.45 937 0.59 1028 0.74 1111 0.91 1625 765 0.40 873 0.53 969 0.67 1056 0.83 1137 1.00 1750 1875 849 0.57 947 0.71 1036 0.86 1118 1.03 1195 1.21 2000 892 0.67 986 0.82 1072 0.98 1151 1.15 1226 1.33 2125 935 0.79 1025 0.94 1108 1.11

2250 980 0.92 1066 1.08 1146 1.25 1220 1.43 --- --2375 1024 1.06 1107 1.23 1184 1.41 --- --- --- --2500 1069 1.22 1149 1.39 --- --- --- --- --- ---

CFM

1500 1188 1.09 1261 1.29 1330 1.49 --- --- --- --1625 1213 1.18 1284 1.38 -- - --- --- --- --- --1750 1239 1.28 1309 1.49 -- - --- --- --- --- --1875 1267 1.40 --- --- --- --- --- --- --- --2000 2125 --- --- --- --- --- --- --- --- --- --2250 --- --- --- --- --- --- --- --- --- --2375 --- --- --- --- --- --- --- --- --- --2500 --- --- --- --- --- --- --- --- --- ---

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field --- supplied fan pull ey (part number KR11AZ606) and belt (part number KR30AE037).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

806 0.48 909 0.61 1002 0.76 1087 0.92 1165 1.10

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

--- --- --- --- --- ---

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

Medium Static Option

Standard Static Option

1185

---

1.29 1258 1.47

--- --- ---

50TC

50TC**06 1 Phase 5 Ton Vertical Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

1500 790 0.40 897 0.53 991 0.68 1075 0.83 1152 1.00 1625 837 0.48 940 0.62 1030 0.77 1112 0.94 1187 1.11 1750 885 0.58 983 0.73 1070 0.89 1150 1.06 1223 1.24 1875 934 0.69 1027 0.85 1112 1.01 2000 983 0.81 1073 0.98 1154 1.16 1229 1.34 --- --2125 1033 0.95 1119 1.13 1198 1.31 1270 1.50 --- --2250 1084 1.11 1166 1.29 1242 1.49 --- --- --- --2375 1134 1.28 1214 1.48 --- --- --- --- --- --2500 1185 1.48 --- --- --- --- --- --- --- ---

CFM

1500 1224 1.18 1291 1.36 --- --- --- --- --- --1625 1257 1.30 1323 1.49 -- - --- --- --- --- --1750 1292 1.43 --- --- --- --- --- --- --- --1875 2000 --- --- --- --- --- --- --- --- --- --2125 --- --- --- --- --- --- --- --- --- --2250 --- --- --- --- --- --- --- --- --- --2375 --- --- --- --- --- --- --- --- --- --2500 --- --- --- --- --- --- --- --- --- ---

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option

1189

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option

--- --- --- --- --- ---

---

1.19 1260 1.38

--- --- ---

APPENDIX III. FAN PERFORMANCE (cont.)

50TC**06 3 Phase 5 Ton Horizontal Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

FieldSuppliedDrive

2250 980 0.92 1066 1.08 1146 1.25 1220 1.43 1291 1.63 2375 1024 1.06 1107 1.23 1184 1.41 1256 1.60 1325 1.79 2500 1069 1.22 1149 1.39 1223 1.58 1293 1.77 1360 1.98

50TC

CFM

1500 1188 1.09 1261 1.29 1330 1.49 1395 1.71 1457 1.95 1625 1213 1.18 1284 1.38 1352 1.59 1416 1.81 1478 2.04 1750 1239 1.28 1309 1.49 1375 1.70 1439 1.92 1875 1267 1.40 1335 1.60 1400 1.82 1462 2.04 1522 2.28 2000 1296 1.53 1363 1.74 1427 1.95 2125 1326 1.67 1392 1.88 1454 2.11 1514 2.34 1571 2.58 2250 1358 1.83 1421 2.05 1483 2.27 1541 2.51 1598 2.75 2375 1390 2.00 1452 2.22 1512 2.45 1570 2.69 1625 2.94 2500 1424 2.19 1484 2.42 1543 2.65 1599 2.89 1654 3.15

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field --- supplied fan pull ey (part number KR11AZ606) and belt (part number KR30AE037).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

806 0.48 909 0.61 1002 0.76 1087 0.92 1165 1.10

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

Medium Static Option

Standard Static Option

1185

1488

1.29 1258 1.47

1499

2.18 1546 2.42

2.16

50TC**06 3 Phase 5 Ton Vertical Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

1500 790 0.40 897 0.53 991 0.68 1075 0.83 1152 1.00 1625 837 0.48 940 0.62 1030 0.77 1112 0.94 1187 1.11 1750 885 0.58 983 0.73 1070 0.89 1150 1.06 1223 1.24 1875 934 0.69 1027 0.85 1112 1.01 2000 983 0.81 1073 0.98 1154 1.16 1229 1.34 1299 1.53 2125 1033 0.95 1119 1.13 1198 1.31 1270 1.50 1338 1.71 2250 1084 1.11 1166 1.29 1242 1.49 1312 1.69 1379 1.89 2375 1134 1.28 1214 1.48 1287 1.68 1355 1.89 1420 2.10 2500 1185 1.48 1262 1.68 1333 1.89 1399 2.10 1462 2.33

CFM

1500 1224 1.18 1291 1.36 1354 1.56 1414 1.77 1472 1.98 1625 1257 1.30 1323 1.49 1385 1.69 1445 1.90 1501 2.12 1750 1292 1.43 1356 1.63 1418 1.83 1476 2.05 1532 2.27 1875 1327 1.57 1391 1.78 1451 1.99 2000 1364 1.74 1427 1.95 1486 2.17 1542 2.39 1596 2.63 2125 1402 1.92 1463 2.13 1521 2.36 1577 2.59 1630 2.83 2250 1441 2.11 1501 2.34 1558 2.57 1612 2.81 --- --2375 1481 2.33 1539 2.56 1595 2.80 --- --- --- --2500 1522 2.56 1579 2.80 --- --- --- --- --- ---

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option

1189

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option

1509

1.19 1260 1.38

2.21 1564 2.44

APPENDIX III. FAN PERFORMANCE (cont.)

50TC**07 3 Phase 6 Ton Horizontal Supply

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

FieldSuppliedDrive

1800 822 0.51 927 0.66 1018 0.82 1100 0.98 1174 1.15 1950 872 0.62 973 0.79 1061 0.95 1140 1.13 1213 1.31 2100 923 0.75 1019 0.92 2250 974 0.90 1067 1.08 1149 1.27 1224 1.46 1294 1.66 2400 1026 1.06 1115 1.26 1195 1.46 1268 1.66 1336 1.87 2550 1079 1.25 1164 1.46 1241 1.67 1312 1.88 1379 2.10 2700 1132 1.46 1214 1.67 1289 1.90 1358 2.12 1422 2.35 2850 1186 1.69 1264 1.92 1336 2.15 1404 2.39 1467 2.63 3000 1240 1.94 1315 2.18 1385 2.43 1451 2.68 1512 2.93

CFM

1800 1244 1.33 1308 1.51 1369 1.70 1427 1.90 1483 2.10 1950 1281 1.49 1345 1.68 1405 1.88 1462 2.09 1517 2.30 2100 1320 1.67 1382 1.87 1441 2.08 1498 2.29 1552 2.51 2250 1359 1.87 1420 2.08 1479 2.29 1534 2.51 1587 2.74 2400 1400 2.09 1460 2.31 1517 2.53 1572 2.76 1624 2.99 2550 1441 2.33 1500 2.55 1557 2.79 1610 3.03 1662 3.27 2700 1483 2.59 1541 2.83 1597 3.07 1650 3.32 1701 3.57 2850 1527 2.87 1583 3.12 1638 3.37 1690 3.63 --- --3000 1571 3.18 1626 3.44 1680 3.70 --- --- --- ---

NOTE: For more information, see General Fan Performance Notes on page 543. Boldface indicates field ---supplied drive is required.

1. Recommend using field--- supplied fan pulley (part number KR11AZ406), motor pulley (part number KR11HY151) and belt (part number KR30AE035).

50TC**07 3 Phase 6 Ton Vertical Supply

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1104

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

Standard Static Option Medium Static Option

Standard Static Option

1.10 1182 1.29 1253 1.48

50TC

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

CFM

FieldSuppliedDrive

1800 907 0.63 1006 0.80 1092 0.97 1169 1.14 1239 1.32 1950 965 0.77 1060 0.95 1143 1.13 1218 1.32 1287 1.51 2100 1024 0.93 1115 1.12 1195 1.32 1268 1.52 1335 1.72 2250 1083 1.11 1170 1.32 1248 1.53 1319 1.74 1385 1.96 2400 1143 1.32 1227 1.54 1302 1.76 1371 1.99 1435 2.22 2550 1203 1.55 1284 1.78 1357 2.02 1424 2.26 1487 2.50 2700 1264 1.81 1342 2.06 1412 2.31 1478 2.56 1539 2.82 2850 1326 2.09 1400 2.36 1469 2.62 1532 2.89 1592 3.16 3000 1387 2.41 1459 2.69 1525 2.97 1587 3.25 1646 3.53

CFM

1800 1304 1.51 1365 1.69 1422 1.88 1477 2.08 1528 2.28 1950 1350 1.71 1410 1.91 1467 2.11 1520 2.31 1572 2.52 2100 1398 1.93 1457 2.14 1512 2.35 1565 2.57 1616 2.79 2250 1446 2.18 1504 2.40 1559 2.62 1611 2.85 1661 3.09 2400 1496 2.45 1552 2.68 1606 2.92 1658 3.16 1707 3.40 2550 1546 2.75 1601 2.99 1654 3.24 1705 3.50 --- --2700 1597 3.07 1651 3.33 1703 3.59 --- --- --- --2850 1648 3.43 1702 3.70 -- - --- --- --- --- --3000 --- --- --- --- --- --- --- --- --- ---

NOTE: For more information, see General Fan Performance Notes on page 54. Boldface indicates field ---supplied drive is required.

1. Recommend using field--- supplied fan pulley (part number KR11AZ406), motor pulley (part number KR11HY151) and belt (part number KR30AE035).

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

AVAILABLEEXTERNALSTATICPRESSURE(IN.WG)

Standard Static Option Medium Static Option

Standard Static Option

Pulley Adjustment

UNIT

1phase

3phase

1phase

50TC

3phase

1phase

3phase

APPENDIX III. FAN PERFORMANCE (cont.)

MOTOR/DRIVE

COMBO

Standard Static 854 825 795 766 736 707 678 648 619 589 560

Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770

High Static --- --- --- --- --- --- --- --- --- --- ---

Standard Static 854 825 795 766 736 707 678 648 619 589 560

Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770

High Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035

Standard Static 854 825 795 766 736 707 678 648 619 589 560

Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770

High Static --- --- --- --- --- --- --- --- --- --- ---

Standard Static 854 825 795 766 736 707 678 648 619 589 560

Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770

High Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035

Standard Static 1175 1135 1094 1054 1013 973 932 892 851 811 770

Medium Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035

High Static --- --- --- --- --- --- --- --- --- --- ---

Standard Static 1175 1135 1094 1054 1013 973 932 892 851 811 770

Medium Static 1466 1423 1380 1337 1294 1251 1207 1164 1121 1078 1035

High Static 1687 1649 1610 1572 1533 1495 1457 1418 1380 1341 1303

Standard Static 1457 1419 1380 1342 1303 1265 1227 1188 1150 1111 1073

Medium Static 1518 1484 1449 1415 1380 1346 1311 1277 1242 1208 1173

High Static 1788 1757 1725 1694 1662 1631 1600 1568 1537 1505 1474

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

MOTOR PULLEY TURNS OPEN

NOTE: Do not adjust pulley further than 5 turns open.

--- F a cto r y s ett i n gs

50TC**04 3 TONS

APPENDIX IV. ELECTRICAL DATA

VOLTAGE

V --- P h --- H z

2 0 8 --- 1 --- 6 0 187 253 16.6 79 325 1.5

2 3 0 --- 1 --- 6 0 187 253 16.6 79 325 1.5

2 0 8 --- 3 --- 6 0 187 253 10.4 73 325 1.5

2 3 0 --- 3 --- 6 0 187 253 10.4 73 325 1.5

4 6 0 --- 3 --- 6 0 414 506 5.8 38 325 0.8

5 7 5 --- 3 --- 6 0 518 633 3.8 37 325 0.6

RANGE

MIN MAX

COMP (ea) OFM (ea) IFM

RLA LRA WAT TS FLA TYPE

50TC**05 4 TONS

VOLTAGE

V --- P h --- H z

2 0 8 --- 1 --- 6 0 187 253 21.8 117 325 1.5

2 3 0 --- 1 --- 6 0 187 253 21.8 117 325 1.5

2 0 8 --- 3 --- 6 0 187 253 13.7 83 325 1.5

2 3 0 --- 3 --- 6 0 187 253 13.7 83 325 1.5

4 6 0 --- 3 --- 6 0 414 506 6.2 41 325 0.8

5 7 5 --- 3 --- 6 0 518 633 4.8 37 325 0.6

RANGE

MIN MAX

COMP (ea) OFM (ea) IFM

RLA LRA WAT TS FLA TYPE

Max

WATTS

Std Static 1000 5.1 70% 4.9

Med Static 1000 5.1 70% 4.9

Std Static 1000 5.1 70% 4.9

Med Static 1000 5.1 70% 4.9

Std Static 1000 5.1 70% 4.9

Med Static 1000 5.1 70% 4.9

High Static 2120 5.5 80% 5.2

Std Static 1000 5.1 70% 4.9

Med Static 1000 5.1 70% 4.9

High Static 2120 5.5 80% 5.2

Std Static 1000 2.2 70% 2.1

Med Static 2120 2.7 80% 2.6

High Static 2120 2.7 80% 2.6

Std Static 1000 2.0 71% 1.9

Med Static 2120 2.1 80% 2.0

High Static 2120 2.1 80% 2.0

Max

WATTS

Std Static 1000 5.1 70% 4.9

Med Static 1850 7.4 78% 7.0

Std Static 1000 5.1 70% 4.9

Med Static 1850 7.4 78% 7.0

Std Static 1000 5.1 70% 4.9

Med Static 1000 5.1 70% 4.9

High Static 2120 5.5 80% 5.2

Std Static 1000 5.1 70% 4.9

Med Static 1000 5.1 70% 4.9

High Static 2120 5.5 80% 5.2

Std Static 1000 2.2 70% 2.1

Med Static 2120 2.7 80% 2.6

High Static 2120 2.7 80% 2.6

Std Static 1000 2.0 71% 1.9

Med Static 2120 2.1 80% 2.0

High Static 2120 2.1 80% 2.0

Max

AMP Draw

Max

AMP Draw

EFF at Full Load FLA

50TC

50TC**06 5 TONS

APPENDIX IV. ELECTRICAL DATA (cont.)

VOLTAGE

V --- P h --- H z

2 0 8 --- 1 --- 6 0 187 253 26.2 134 325 1.5

2 3 0 --- 1 --- 6 0 187 253 26.2 134 325 1.5

2 0 8 --- 3 --- 6 0 187 253 15.6 110 325 1.5

2 3 0 --- 3 --- 6 0 187 253 15.6 110 325 1.5

4 6 0 --- 3 --- 6 0 414 506 7.7 52 325 0.8

RANGE

MIN MAX

COMP (ea) OFM (ea) IFM

RLA LRA WAT TS FLA TYPE

50TC

5 7 5 --- 3 --- 6 0 518 633 5.8 39 325 0.6

50TC**07 6 TONS

VOLTAGE

V --- P h --- H z

2 0 8 --- 3 --- 6 0 187 253 19.0 12 325 1.5

2 3 0 --- 3 --- 6 0 187 253 19.0 12 325 1.5

4 6 0 --- 3 --- 6 0 414 506 9.7 62 325 0.8

5 7 5 --- 3 --- 6 0 518 633 7.4 50 325 0.6

RANGE

MIN MAX

COMP (ea) OFM (ea) IFM

RLA LRA WAT TS FLA TYPE

Max

WATTS

Std Static 1000 5.1 70% 4.9

Med Static 1850 7.4 78% 7.0

Std Static 1000 5.1 70% 4.9

Med Static 1850 7.4 78% 7.0

Std Static 1000 5.1 70% 4.9

Med Static 2120 5.5 80% 5.2

High Static 2615 7.9 81% 7.5

Std Static 1000 5.1 70% 4.9

Med Static 2120 5.5 80% 5.2

High Static 2615 7.9 81% 7.5

Std Static 2120 2.7 80% 2.6

Med Static 2615 3.6 81% 3.4

High Static 2615 3.6 81% 3.4

Std Static 2120 2.1 80% 2.0

Med Static 3775 2.9 81% 2.8

High Static 3775 2.9 81% 2.8

Max

WATTS

Std Static 2120 5.5 80% 5.2

Med Static 2615 7.9 81% 7.5

High Static 3775 10.7 81% 10.2

Std Static 2120 5.5 80% 5.2

Med Static 2615 7.9 81% 7.5

High Static 3775 10.7 81% 10.2

Std Static 2120 2.7 80% 2.6

Med Static 2615 3.6 81% 3.4

High Static 3775 5.0 81% 4.8

Std Static 2120 2.1 80% 2.0

Med Static 3775 2.9 81% 2.8

High Static 3775 2.9 81% 2.8

Max

AMP Draw

Max

AMP Draw

EFF at Full Load FLA

APPENDIX IV. ELECTRICAL DATA (cont.)

MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O.

ELECTRIC HEATER NO C.O. or UNPWR C.O.

IFM

UNIT

50TC**04

TYPE

N O M . V --- P H --- H Z

STD

208/230---1---60

MED

STD

MED

208/230---3---60

HIGH

STD

MED

4 6 0 --- 3 --- 6 0

HIGH

STD None None 7.3 15 7 44 9.2 15 9 46

MED None None 7.3 15 7 44 9.2 15 9 46

HIGH None None 7.4 15 7 50 9.3 15 10 52

5 7 5 --- 3 --- 6 0

Nom (kW) FLA

MCA MOCP

None None 27.2 40 26 95 29.1 45 29 97

3.3/4.4 15.9/18.3 27.2/29.0 40/40 26/27 95/95 29.1/31.4 45/45 29/29 97/97

4.9/6.5 23.5/27.1 35.5/40.0 40/45 33/37 95/95 37.9/42.4 45/45 35/39 97/97

6.5/8.7 31.4/36.3 45.4/51.5 50/60 42/47 95/95 47.8/53.9 50/60 44/50 97/97

7.9/10.5 37.9/43.8 53.5/60.9 60/70 49/56 95/95 55.9/63.3 60/70 51/58 97/97

9.8/13.0 46.9/54.2 64.8/73.9 70/80 60/68 95/95 67.1/76.3 70/80 62/70 97/97 None None 27.2 40 26 95 29.1 45 29 97

3.3/4.4 15.9/18.3 27.2/29.0 40/40 26/27 95/95 29.1/31.4 45/45 29/29 97/97

4.9/6.5 23.5/27.1 35.5/40.0 40/45 33/37 95/95 37.9/42.4 45/45 35/39 97/97

6.5/8.7 31.4/36.3 45.4/51.5 50/60 42/47 95/95 47.8/53.9 50/60 44/50 97/97

7.9/10.5 37.9/43.8 53.5/60.9 60/70 49/56 95/95 55.9/63.3 60/70 51/58 97/97

9.8/13.0 46.9/54.2 64.8/73.9 70/80 60/68 95/95 67.1/76.3 70/80 62/70 97/97 None None 19.4 25 19 89 21.3 30 22 91

3.3/4.4 9.2/10.6 19.4/19.4 25/25 19/19 89/89 21.3/21.8 30/30 22/22 91/91

4.9/6.5 13.6/15.6 23.1/25.6 25/30 21/24 89/89 25.5/28.0 30/30 23/26 91/91

6.5/8.7 18.1/20.9 28.8/32.3 30/35 26/30 89/89 31.1/34.6 35/35 29/32 91/91

7.9/10.5 21.9/25.3 33.5/37.8 35/40 31/35 89/89 35.9/40.1 40/45 33/37 91/91

12.0/16.0 33.4/38.5 47.9/54.3 50/60 44/50 89/89 50.3/56.6 60/60 46/52 91/91 None None 19.4 25 19 89 21.3 30 22 91

3.3/4.4 9.2/10.6 19.4/19.4 25/25 19/19 89/89 21.3/21.8 30/30 22/22 91/91

4.9/6.5 13.6/15.6 23.1/25.6 25/30 21/24 89/89 25.5/28.0 30/30 23/26 91/91

6.5/8.7 18.1/20.9 28.8/32.3 30/35 26/30 89/89 31.1/34.6 35/35 29/32 91/91

7.9/10.5 21.9/25.3 33.5/37.8 35/40 31/35 89/89 35.9/40.1 40/45 33/37 91/91

12.0/16.0 33.4/38.5 47.9/54.3 50/60 44/50 89/89 50.3/56.6 60/60 46/52 91/91 None None 19.7 30 20 107 21.6 30 22 109

3.3/4.4 9.2/10.6 19.7/19.8 30/30 20/20 107/107 21.6/22.1 30/30 22/22 109/109

4.9/6.5 13.6/15.6 23.5/26.0 30/30 22/24 107/107 25.9/28.4 30/30 24/26 109/109

6.5/8.7 18.1/20.9 29.1/32.6 30/35 27/30 107/107 31.5/35.0 35/40 29/32 109/109

7.9/10.5 21.9/25.3 33.9/38.1 35/40 31/35 107/107 36.3/40.5 40/45 33/37 109/109

12.0/16.0 33.4/38.5 48.3/54.6 50/60 44/50 107/107 50.6/57.0 60/60 47/52 109/109 None None 10.2 15 10 46 11.2 15 11 47

6.0 7.2 11.6 15 11 46 12.9 15 12 47

8.8 10.6 15.9 20 15 46 17.1 20 16 47

11.5 13.8 19.9 20 18 46 21.1 25 19 47

14.0 16.8 23.6 25 22 46 24.9 25 23 47

None None 10.2 15 10 46 11.2 15 11 47

6.0 7.2 11.6 15 11 46 12.9 15 12 47

8.8 10.6 15.9 20 15 46 17.1 20 16 47

11.5 13.8 19.9 20 18 46 21.1 25 19 47

14.0 16.8 23.6 25 22 46 24.9 25 23 47

None None 10.7 15 11 55 11.7 15 12 56

6.0 7.2 12.3 15 11 55 13.5 15 12 56

8.8 10.6 16.5 20 15 55 17.8 20 16 56

11.5 13.8 20.5 25 19 55 21.8 25 20 56

14.0 16.8 24.3 25 22 55 25.5 30 23 56

NO P.E. w/ P.E. (pwrd fr/unit)

DISC. SIZE

MCA MOCP

FLA LRA FLA LRA

DISC. SIZE

50TC

APPENDIX IV. ELECTRICAL DATA (cont)

MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O. (cont)

ELECTRIC HEATER NO C.O. or UNPWR C.O.

50TC

IFM

UNIT

50TC**05

TYPE

N O M . V --- P H --- H Z

STD

208/230---1---60

MED

STD

MED

208/230---3---60

HIGH

STD

MED

4 6 0 --- 3 --- 6 0

HIGH

STD None None 8.5 15 8 44 10.4 15 11 46

MED None None 8.5 15 8 44 10.4 15 11 46

HIGH None None 8.6 15 9 50 10.5 15 11 52

5 7 5 --- 3 --- 6 0

Nom (kW) FLA

MCA MOCP

None None 33.7 50 32 133 35.6 50 35 135

3.3/4.4 15.9/18.3 33.7/33.7 50/50 32/32 133/133 35.6/35.6 50/50 35/35 135/135

6.5/8.7 31.4/36.3 45.4/51.5 50/60 42/47 133/133 47.8/53.9 50/60 44/50 135/135

9.8/13.0 46.9/54.2 64.8/73.9 70/80 60/68 133/133 67.1/76.3 70/80 62/70 135/135

13.1/17.4 62.8/72.5 84.6/96.8 90/100 78/89 133/133 87.0/99.1 90/100 80/91 135/135

15.8/21.0 75.8/87.5 100.9/115.5 110/125 93/106 133/133 103.3/117.9 110/125 95/108 135/135 None None 33.7 50 32 133 35.6 50 35 135

3.3/4.4 15.9/18.3 33.7/33.7 50/50 32/32 133/133 35.6/35.6 50/50 35/35 135/135

6.5/8.7 31.4/36.3 45.4/51.5 50/60 42/47 133/133 47.8/53.9 50/60 44/50 135/135

9.8/13.0 46.9/54.2 64.8/73.9 70/80 60/68 133/133 67.1/76.3 70/80 62/70 135/135

13.1/17.4 62.8/72.5 84.6/96.8 90/100 78/89 133/133 87.0/99.1 90/100 80/91 135/135

15.8/21.0 75.8/87.5 100.9/115.5 110/125 93/106 133/133 103.3/117.9 110/125 95/108 135/135 None None 23.5 30 23 99 25.4 30 25 101

4.9/6.5 13.6/15.6 23.5/25.6 30/30 23/24 99/99 25.5/28.0 30/30 25/26 101/101

6.5/8.7 18.1/20.9 28.8/32.3 30/35 26/30 99/99 31.1/34.6 35/35 29/32 101/101

12.0/16.0 33.4/38.5 47.9/54.3 50/60 44/50 99/99 50.3/56.6 60/60 46/52 101/101

15.8/21.0 43.8/50.5 60.9/69.3 70/70 56/64 99/99 63.3/71.6 70/80 58/66 101/101 None None 23.5 30 23 99 25.4 30 25 101

4.9/6.5 13.6/15.6 23.5/25.6 30/30 23/24 99/99 25.5/28.0 30/30 25/26 101/101

6.5/8.7 18.1/20.9 28.8/32.3 30/35 26/30 99/99 31.1/34.6 35/35 29/32 101/101

12.0/16.0 33.4/38.5 47.9/54.3 50/60 44/50 99/99 50.3/56.6 60/60 46/52 101/101

15.8/21.0 43.8/50.5 60.9/69.3 70/70 56/64 99/99 63.3/71.6 70/80 58/66 101/101 None None 23.8 30 23 117 25.7 30 26 119

4.9/6.5 13.6/15.6 23.8/26.0 30/30 23/24 117/117 25.9/28.4 30/30 26/26 119/119

6.5/8.7 18.1/20.9 29.1/32.6 30/35 27/30 117/117 31.5/35.0 35/40 29/32 119/119

12.0/16.0 33.4/38.5 48.3/54.6 50/60 44/50 117/117 50.6/57.0 60/60 47/52 119/119

15.8/21.0 43.8/50.5 61.3/69.6 70/70 56/64 117/117 63.6/72.0 70/80 59/66 119/119 None None 10.7 15 10 49 11.7 15 12 50

6.0 7.2 11.6 15 11 49 12.9 15 12 50

11.5 13.8 19.9 20 18 49 21.1 25 19 50

14.0 16.8 23.6 25 22 49 24.9 25 23 50

23.0 27.7 37.3 40 34 49 38.5 40 35 50

None None 10.7 15 10 49 11.7 15 12 50

6.0 7.2 11.6 15 11 49 12.9 15 12 50

11.5 13.8 19.9 20 18 49 21.1 25 19 50

14.0 16.8 23.6 25 22 49 24.9 25 23 50

23.0 27.7 37.3 40 34 49 38.5 40 35 50

None None 11.2 15 11 58 12.2 15 12 59

6.0 7.2 12.3 15 11 58 13.5 15 12 59

11.5 13.8 20.5 25 19 58 21.8 25 20 59

14.0 16.8 24.3 25 22 58 25.5 30 23 59

23.0 27.7 37.9 40 35 58 39.1 40 36 59

NO P.E. w/ P.E. (pwrd fr/unit)

DISC. SIZE

MCA MOCP

FLA LRA FLA LRA

DISC. SIZE

APPENDIX IV. ELECTRICAL DATA (cont)

MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O. (cont)

ELECTRIC HEATER NO C.O. or UNPWR C.O.

IFM

UNIT

50TC**06

TYPE

N O M . V --- P H --- H Z

STD

208/230---1---60

MED

STD

MED

208/230---3---60

HIGH

STD

MED

4 6 0 --- 3 --- 6 0

HIGH

STD None None 9.8 15 10 46 11.7 15 12 48

MED None None 9.9 15 10 52 11.8 15 12 54

HIGH None None 10.7 15 11 63 12.6 15 13 65

5 7 5 --- 3 --- 6 0

Nom (kW) FLA

MCA MOCP

None None 39.2 60 37 150 41.1 60 40 152

4.9/6.5 23.5/27.1 39.2/40.0 60/60 37/37 150/150 41.1/42.4 60/60 40/40 152/152

6.5/8.7 31.4/36.3 45.4/51.5 60/60 42/47 150/150 47.8/53.9 60/60 44/50 152/152

9.8/13.0 46.9/54.2 64.8/73.9 70/80 60/68 150/150 67.1/76.3 70/80 62/70 152/152

13.1/17.4 62.8/72.5 84.6/96.8 90/100 78/89 150/150 87.0/99.1 90/100 80/91 152/152

15.8/21.0 75.8/87.5 100.9/115.5 110/125 93/106 150/150 103.3/117.9 110/125 95/108 152/152 None None 41.3 60 40 175 43.2 60 42 177

4.9/6.5 23.5/27.1 41.3/42.6 60/60 40/40 175/175 43.2/45.0 60/60 42/42 177/177

6.5/8.7 31.4/36.3 48.0/54.1 60/60 44/50 175/175 50.4/56.5 60/60 46/52 177/177

9.8/13.0 46.9/54.2 67.4/76.5 70/80 62/70 175/175 69.8/78.9 70/80 64/73 177/177

13.1/17.4 62.8/72.5 87.3/99.4 90/100 80/91 175/175 89.6/101.8 90/110 82/94 177/177

15.8/21.0 75.8/87.5 103.5/118.1 110/125 95/109 175/175 105.9/120.5 110/125 97/111 177/177 None None 25.9 30 25 126 27.8 40 27 128

4.9/6.5 13.6/15.6 25.9/25.9 30/30 25/25 126/126 27.8/28.0 40/40 27/27 128/128

7.9/10.5 21.9/25.3 33.5/37.8 40/40 31/35 126/126 35.9/40.1 40/45 33/37 128/128

12.0/16.0 33.4/38.5 47.9/54.3 50/60 44/50 126/126 50.3/56.6 60/60 46/52 128/128

15.8/21.0 43.8/50.5 60.9/69.3 70/70 56/64 126/126 63.3/71.6 70/80 58/66 128/128

19.9/26.5 55.2/63.8 75.1/85.9 80/90 69/79 126/126 77.5/88.3 80/90 71/81 128/128 None None 26.2 40 26 144 28.1 40 28 146

4.9/6.5 13.6/15.6 26.2/26.2 40/40 26/26 144/144 28.1/28.4 40/40 28/28 146/146

7.9/10.5 21.9/25.3 33.9/38.1 40/40 31/35 144/144 36.3/40.5 40/45 33/37 146/146

12.0/16.0 33.4/38.5 48.3/54.6 50/60 44/50 144/144 50.6/57.0 60/60 47/52 146/146

15.8/21.0 43.8/50.5 61.3/69.6 70/70 56/64 144/144 63.6/72.0 70/80 59/66 146/146

19.9/26.5 55.2/63.8 75.5/86.3 80/90 69/79 144/144 77.9/88.6 80/90 72/82 146/146 None None 28.5 40 28 170 30.4 45 30 172

4.9/6.5 13.6/15.6 28.5/28.9 40/40 28/28 170/170 30.4/31.3 45/45 30/30 172/172

7.9/10.5 21.9/25.3 36.8/41.0 40/45 34/38 170/170 39.1/43.4 45/45 36/40 172/172

12.0/16.0 33.4/38.5 51.1/57.5 60/60 47/53 170/170 53.5/59.9 60/60 49/55 172/172

15.8/21.0 43.8/50.5 64.1/72.5 70/80 59/67 170/170 66.5/74.9 70/80 61/69 172/172

19.9/26.5 55.2/63.8 78.4/89.1 80/90 72/82 170/170 80.8/91.5 90/100 74/84 172/172 None None 12.5 20 12 60 13.5 20 13 61

6.0 7.2 12.5 20 12 60 13.5 20 13 61

11.5 13.8 19.9 20 18 60 21.1 25 19 61

14.0 16.8 23.6 25 22 60 24.9 25 23 61

23.0 27.7 37.3 40 34 60 38.5 40 35 61

25.5 30.7 41.0 45 38 60 42.3 45 39 61

None None 13 20 13 69 14 20 14 70

6.0 7.2 13.0 20 13 69 14.0 20 14 70

11.5 13.8 20.5 25 19 69 21.8 25 20 70

14.0 16.8 24.3 25 22 69 25.5 30 23 70

23.0 27.7 37.9 40 35 69 39.1 40 36 70

25.5 30.7 41.6 45 38 69 42.9 45 39 70

None None 13.8 20 14 82 14.8 20 15 83

6.0 7.2 13.8 20 14 82 14.8 20 15 83

11.5 13.8 21.5 25 20 82 22.8 25 21 83

14.0 16.8 25.3 30 23 82 26.5 30 24 83

23.0 27.7 38.9 40 36 82 40.1 45 37 83

25.5 30.7 42.6 45 39 82 43.9 45 40 83

NO P.E. w/ P.E. (pwrd fr/unit)

DISC. SIZE

MCA MOCP

FLA LRA FLA LRA

DISC. SIZE

50TC

APPENDIX IV. ELECTRICAL DATA (cont)

MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O. (cont)

ELECTRIC HEATER NO C.O. or UNPWR C.O.

50TC

IFM

UNIT

50TC**07

TYPE

N O M . V --- P H --- H Z

STD

MED

208/230---3---60

HIGH

STD

MED

4 6 0 --- 3 --- 6 0

HIGH

STD None None 11.9 15 12 63 13.8 20 14 65

MED None None 12.7 20 12 74 14.6 20 15 76

HIGH None None 12.7 20 12 74 14.6 20 15 76

5 7 5 --- 3 --- 6 0

Nom (kW) FLA

MCA MOCP

None None 30.5 45 30 157 32.4 50 32 159

4.9/6.5 13.6/15.6 30.5/30.5 45/45 30/30 157/157 32.4/32.4 50/50 32/32 159/159

7.9/10.5 21.9/25.3 33.9/38.1 45/45 31/35 157/157 36.3/40.5 50/50 33/37 159/159

12.0/16.0 33.4/38.5 48.3/54.6 50/60 44/50 157/157 50.6/57.0 60/60 47/52 159/159

15.8/21.0 43.8/50.5 61.3/69.6 70/70 56/64 157/157 63.6/72.0 70/80 59/66 159/159

19.9/26.5 55.2/63.8 75.5/86.3 80/90 69/79 157/157 77.9/88.6 80/90 72/82 159/159 None None 32.8 50 32 183 34.7 50 34 185

4.9/6.5 13.6/15.6 32.8/32.8 50/50 32/32 183/183 34.7/34.7 50/50 34/34 185/185

7.9/10.5 21.9/25.3 36.8/41.0 50/50 34/38 183/183 39.1/43.4 50/50 36/40 185/185

12.0/16.0 33.4/38.5 51.1/57.5 60/60 47/53 183/183 53.5/59.9 60/60 49/55 185/185

15.8/21.0 43.8/50.5 64.1/72.5 70/80 59/67 183/183 66.5/74.9 70/80 61/69 185/185

19.9/26.5 55.2/63.8 78.4/89.1 80/90 72/82 183/183 80.8/91.5 90/100 74/84 185/185 None None 32.8 50 32 183 34.7 50 34 185

4.9/6.5 13.6/15.6 32.8/32.8 50/50 32/32 183/183 34.7/34.7 50/50 34/34 185/185

7.9/10.5 21.9/25.3 36.8/41.0 50/50 34/38 183/183 39.1/43.4 50/50 36/40 185/185

12.0/16.0 33.4/38.5 51.1/57.5 60/60 47/53 183/183 53.5/59.9 60/60 49/55 185/185

15.8/21.0 43.8/50.5 64.1/72.5 70/80 59/67 183/183 66.5/74.9 70/80 61/69 185/185

19.9/26.5 55.2/63.8 78.4/89.1 80/90 72/82 183/183 80.8/91.5 90/100 74/84 185/185 None None 15.5 25 15 79 16.5 25 16 80

6.0 7.2 15.5 25 15 79 16.5 25 16 80

11.5 13.8 20.5 25 19 79 21.8 25 20 80

14.0 16.8 24.3 25 22 79 25.5 30 23 80

23.0 27.7 37.9 40 35 79 39.1 40 36 80

25.5 30.7 41.6 45 38 79 42.9 45 39 80

None None 16.3 25 16 92 17.3 25 17 93

6.0 7.2 16.3 25 16 92 17.3 25 17 93

11.5 13.8 21.5 25 20 92 22.8 25 21 93

14.0 16.8 25.3 30 23 92 26.5 30 24 93

23.0 27.7 38.9 40 36 92 40.1 45 37 93

25.5 30.7 42.6 45 39 92 43.9 45 40 93

None None 17.3 25 17 101 18.3 25 18 102

6.0 7.2 17.3 25 17 101 18.3 25 18 102

11.5 13.8 22.8 25 21 101 24.0 25 22 102

14.0 16.8 26.5 30 24 101 27.8 30 26 102

23.0 27.7 40.1 45 37 101 41.4 45 38 102

25.5 30.7 43.9 45 40 101 45.1 50 42 102

NO P.E. w/ P.E. (pwrd fr/unit)

DISC. SIZE

MCA MOCP

FLA LRA FLA LRA

DISC. SIZE

APPENDIX V. WIRING DIAGRAM LIST

Wiring Diagrams

50TC DRAWING NUMBER.REV

Size Voltage CONTROL POWER

208/230--- 1---60 48TM500212.04 48TM500211.08

A04

A05

A06

A07

All PremierLink* 48TM500983.02

NOTE: Component arrangement on Control; Legend on Power Schematic * The PremierLink label is an overlay for the Control label for the specific base model. Both labels

(Control and PremierLink) are required to display a complete unit control schematic with PremierLink Option

208/230--- 3---60 48TM500212.04 48TM500214.07

460--- 3---60 48TM500212.04 48TM500214.07

575--- 3---60 48TM500212.04 48TM500214.07 208/230--- 1---60 48TM500212.04 48TM500211.08 208/230--- 3---60 48TM500212.04 48TM500214.07

460--- 3---60 48TM500212.04 48TM500214.07

575--- 3---60 48TM500212.04 48TM500214.07 208/230--- 1---60 48TM500212.04 48TM500211.08 208/230--- 3---60 48TM500212.04 48TM500214.07

460--- 3---60 48TM500212.04 48TM500214.07

575--- 3---60 48TM500212.04 48TM500214.07 208/230--- 3---60 48TM500212.04 48TM500214.07

460--- 3---60 48TM500212.04 48TM500214.07

575--- 3---60 48TM500212.04 48TM500214.07

50TC

APPENDIX VI. MOTORMASTER SENSOR LOCATIONS

Fig. 67 -- 50TC*A04 Outdoor Circuiting

C08259

C08261

Fig. 69 -- 50TC*A07 Outdoor Circuiting

Fig. 68 -- 50TC*A05/06 Outdoor Circuiting

C08260

C08262

Fig. 70 -- 50TC*A08 Outdoor Circuiting

APPENDIX VI. (cont) MOTORMASTER SENSOR LOCATIONS

50TC

Fig. 71 -- 50TC*A09/12 Outdoor Circuiting

C08263

50TC

Manufacturer r es er ves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: 50TC--- 1SM

Replaces: NEW

START-UP CHECKLIST

(Remove and Store in Job File)

I. PRELIMINARY INFORMATION

MODEL NO.: SERIAL NO.:

DA TE: TECHNICIAN:

II. PRE-START-UP (insert checkmark in box as each item is completed)

j VERIFY THA T JOBSITE VOLT AGE AGREES WITH VOLT AGE LISTED ON RA TING PLATE

j VERIFY THA T ALL PACKAGING MA TERIALS HA VE BEEN REMOVED FROM UNIT

j REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTALLA TION INSTRUCTIONS

j VERIFY THA T CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS

j CHECK REFRIGERANT PIPING FOR INDICATIONS OF LEAKS; INVESTIGATE AND REPAIR IF NECESSARY

j CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS

j CHECK THA T RETURN (INDOOR) AIR FILTERS ARE CLEAN AND IN PLACE

j VERIF Y THAT UNIT INSTALLATION IS LEVEL

j CHECK F A N WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW

TIGHTNESS

j CHECK TO ENSURE THAT ELECTRICAL WIRING IS NOT IN CONTACT WITH REFRIGERA NT LINES

OR SHARP METAL EDGES

j CHECK PULLEY ALIGNMEN T AND BELT TENSION PER INSTA LLATION INSTRUCTIONS

III. START-UP

50TC

ELECTRICAL

SUPPLY VOLT AGE L1-L2 L2-L3 L3-L1 COMPRESSOR AMPS L1

L2 L3

INDOOR-FAN AMPS L1 L2 L3

TEMPERATURES

OUTDOOR-AIR TEMPERATURE DB RETURN-AIR TEMPERATURE

COOLING SUPPL Y AIR

DB DB

WB WB

PRESSURES (Cooling Mode)

REFRIGERANT SUCTION PSIG REFRIGERANT DISCHARGE

PSIG

j VERIFY THA T 3-PHASE F AN MOTOR AND BLOWER ARE ROTA TING IN CORRECT DIRECTION.

j VERIFY THA T 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION

j VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS

GENERAL

j SET ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO MATCH JOB REQUIREMENTS

(IF EQUIPPED)

Manufacturer r es er ves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: 50TC--- 1SM

Replaces: NEW

Carrier 50TCA04-A07 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual