Carrier 50HQP072-120 User Manual

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Page 1

Horizontal Water Source Heat Pumps

with PURON® Refrigerant (R-410A)

Installation, Start-Up, and

Service Instructions

AQUAZONE™

50HQP072-120

50 Hz

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . .1,2

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

• STORAGE

•PROTECTION

•INSPECT UNIT

Step 3 — Locate Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Step 4 — Mount Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Step 5 — Install Duct System. . . . . . . . . . . . . . . . . . . . . 5

• SO U N D AT T E NUATI O N

• EXISTING DUCT SYSTEM

Step 6 — Install Condensate Piping Drain. . . . . . . . 6

•INSTALLATION

• VENTING

Step 7 — Field Convert Air Discharge . . . . . . . . . . . . 6

Step 8 — Install Piping Connections . . . . . . . . . . . . . 7

• WATER LOOP APPLICATIONS

• GROUND-LOOP APPLICATIONS

• GROUND-WATER APPLICATIONS

Step 9 — Install Field Power Supply Wiring . . . . . . 8

• POWER CONNECTION

• SUPPLY VOLTAGE

• EXTERNAL LOOP POWER CONNECTION

• 420-VOLT OPERATION

Step 10 — Install Field Control Wiring. . . . . . . . . . . 15

• THERMOSTAT CONNECTIONS

• WATER FREEZE PROTECTION

• AIR COIL FREEZE PROTECTION

• ACCESSORY CONNECTIONS

• WATER SOLENOID VALVES

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-20

System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Airflow and External Static Pressure . . . . . . . . . . . 16

FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . 20-22

Complete C Control Jumper Settings. . . . . . . . . . . 20

Complete C Control DIP Switches. . . . . . . . . . . . . . 20

Deluxe D Control Jumper Settings . . . . . . . . . . . . . 20

Deluxe D Control DIP Switches . . . . . . . . . . . . . . . . 21

Deluxe D Control Accessory Relay

Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-24

Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Start Up System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 22

Unit Start-Up in Cooling Mode. . . . . . . . . . . . . . . . . . . 22

Unit Start-Up in Heating Mode. . . . . . . . . . . . . . . . . . . 23

Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Page

Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 24

Ground Coupled, Closed Loop and Plateframe

Heat Exchanger Well Systems . . . . . . . . . . . . . . . . 24

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24,25

Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Units with Aquazone Complete C Control . . . . . . . 24

Units with Aquazone Deluxe D Control. . . . . . . . . . 24

SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,26

Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Aquazone Deluxe D Control LED Indicators . . . . . 25

SERVICE

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 27

Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 27

Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Compressor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Air Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 28

Refrigerant Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 28

Blower Fan Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Blower Fan Performance Adjustment . . . . . . . . . . . 29

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 30-32

Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Control Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . CL-1,CL-2

IMPORTANT: Read the entire instruction manual before starting installation.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-29

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.

Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. 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.

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500077-01 Printed in U.S.A. Form 50HQP-C1SI Pg 1 11-10 Replaces: New

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accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.

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 the National Electrical Code (NEC) for special installation requirements.

Understand the signal words — DANGER, WARNING, and CAUTION. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards that could result in personal injury or death. CAUTION is used to identify unsafe practices, which would result in minor personal injury or product and property damage.

Recognize safety information. This is the safety-alert symbol ( ). When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

WARNING

Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation. There may be more than one disconnect switch. Tag all disconnect locations to alert others not to restore power until work is completed.

CAUTION

This system uses R-410A, which has higher pressures than R-22 and other refrigerants. No other refrigerant may be used in this system. Suction tubing design pressure is 3068 kPa and liquid tubing design pressure is 4522 kPa. Failure to use gage set, hoses, and recovery systems designed to handle R-410A refrigerant may result in personal injury and equipment damage. If unsure about equipment, consult the equipment manufacturer.

GENERAL

This Installation and Start-Up Instructions literature is for Aquazone™ water source heat pump systems with Puron refrigerant.

Water source heat pumps (WSHPs) are single-package horizontally and vertically mounted units with electronic controls designed for year-round cooling and heating.

IMPORTANT: The installation of water source heat pump units and all associated components, parts, and accessories which make up the installation shall be in accordance with the regulations of ALL authorities having jurisdiction and MUST conform to all applicable codes. It is the responsibility of the installing contractor to determine and comply with ALL applicable codes and regulations.

INSTALLATION

Step 1 — Check Jobsite —

maintenance instructions are provided with each unit. Before unit start-up, read all manuals and become familiar with the unit and its operation. Thoroughly check out the system before operation. Complete the inspections and instructions listed below to prepare a unit for installation. See Table 1 for unit physical data.

Horizontal units are designed for indoor installation only. Be sure to allow adequate space around the unit for servicing.

Installation, operation and

See Fig. 1 for overall unit dimensions. Refer to Fig. 2 for an example of a typical horizontal installation.

CAUTION

To avoid equipment damage, do not use these units as a source of heating or cooling during the construction process. The mechanical components and filters used in these units quickly becomes clogged with construction dirt and debris which may cause system damage.

Step 2 — Check Unit — Upon receipt of shipment at

the jobsite, carefully check the shipment against the bill of lading. Make sure all units have been received. Inspect the carton or crating of each unit, and inspect each unit for damage. Ensure the shipping company makes proper notation of any shortages or damage on all copies of the freight bill. Concealed damage not discovered during unloading must be reported to the shipping company within 15 days of receipt of shipment.

NOTE: It is the responsibility of the purchaser to file all necessary claims with the shipping company.

1. Verify unit is correct model for entering water temperature of job.

2. Be sure that the location chosen for unit installation provides ambient temperatures maintained above freezing. Well water applications are especially susceptible to freezing.

3. Be sure the installation location is isolated from sleeping areas, private offices and other acoustically sensitive spaces.

NOTE: A sound control accessory package may be used to help eliminate sound in sensitive spaces.

4. Check local codes to be sure a secondary drain pan is not required under the unit.

5. Be sure unit is mounted at a height sufficient to provide an adequate slope of the condensate lines. If an appropriate slope cannot be achieved, a field-supplied condensate pump may be required.

6. Provide sufficient space for duct connection.

7. Provide adequate clearance for filter replacement and drain pan cleaning. Do not allow piping, conduit, etc. to block filter access.

8. Provide sufficient access to allow maintenance and servicing of the fan and fan motor, compressor and coils. Removal of the entire unit from the closet should not be necessary.

9. Provide an unobstructed path to the unit within the closet or mechanical room. Space should be sufficient to allow removal of unit if necessary.

10. Provide ready access to water valves and fittings, and screwdriver access to unit side panels, discharge collar, and all electrical connections.

11. Where access to side panels is limited, pre-removal of the control box side mounting screws may be necessary for future servicing.

STORAGE — If the equipment is not needed for immediate installation upon its arrival at the jobsite, it should be left in its shipping carton and stored in a clean, dry area of the building or in a warehouse. Units must be stored in an upright position at all times. If carton stacking is necessary, stack units a maximum of 3 high. Do not remove any equipment from its shipping package until it is needed for installation.

PROTECTION — Once the units are properly positioned on the jobsite, they must be covered with either a shipping carton, vinyl film, or an equivalent protective covering. Open ends of pipes stored on the jobsite must be capped. This precaution is

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especially important in areas where painting, plastering, or spraying of fireproof material, etc. is not yet complete. Foreign material that is allowed to accumulate within the units can prevent proper start-up and necessitate costly clean-up operations.

Before installing any of the system components, be sure to examine each pipe, fitting, and valve, and remove any dirt or foreign material found in or on these components.

CAUTION

3. Verify that the unit’s refrigerant tubing is free of kinks or dents, and that it does not touch other unit components.

4. Inspect all electrical connections. Be sure connections are clean and tight at their terminations.

5. Loosen compressor bolts until the compressor rides freely on springs. Remove shipping restraints.

6. Remove the four 6 mm (

/4 in.) shipping bolts from compressor support plate (two bolts on each side) to maximize vibration and sound alternation.

DO NOT store or install units in corrosive environments or

CAUTION

in locations subject to temperature or humidity extremes (e.g., attics, garages, rooftops, etc.). Corrosive conditions and high temperature or humidity can significantly reduce performance, reliability, and service life. Always move

Failure to remove shipping brackets from spring-mounted compressors will cause excessive noise and could cause component failure due to added vibration.

units in an upright position. Tilting units on their sides may cause equipment damage.

7. Remove any blower support cardboard from inlet of the blower.

INSPECT UNIT — To prepare the unit for installation, complete the procedures listed below:

1. Compare the electrical data on the unit nameplate with ordering and shipping information to verify that the correct unit has been shipped.

8. Locate and verify any accessory kit located in compressor and/or blower section.

9. Remove any access panel screws that may be difficult to remove once unit is installed.

2. Do not remove the packaging until the unit is ready for installation.

Table 1 — Physical Data — 50HQP072-120 Units

UNIT 50HQP 072 096 120 COMPRESSOR QUANTITY* Scroll Number of Circuits (Compressors) 2 Factory Charge HFC-410A (kg) per circuit 1.70 2.15 2.27 BLOWER MOTOR Blower Motor Quantity 1 Standard Motor (kW) 0.75 1.49 2.24 BLOWER No. of Blowers 1 Blower Wheel Size D x W (cm) 30.48 x 30.48 WATER CONNECTION SIZE FPT (in.) [mm] 1 COAX VOLUME Volume (liters) 6.13 6.85 9.08 CONDENSATE CONNECTION SIZE FPT (in.) [mm] AIR COIL DATA Air Coil Dimensions H x W (cm) 50.8 x 137.16 50.8 x 162.56 Air Coil Total Face Area (sq m) 0.70 0.83 Air Coil Tube Size (cm) 0.953 Air Coil Fin Spacing (fins per cm) 5.5 Air Coil Number of Rows 3 MISCELLANEOUS DATA Filter Standard - Throwaway (qty) (cm)† 40.64 x 50.80 x 2.54 Weight - Operating (kg) 265.8 292.1 316.6 Weight - Packaged (kg) 283.9 310.3 334.8

*All units have grommet and spring compressor mountings, and

2.2 mm and 3.5 mm electrical knockouts. †51 mm filters are available as field-installed accessory.

/4 [31.8] 11/2 [38.1]

/4 [19.1]

NOTE: Use the lowest maximum pressure rating when multiple options are combined:

OPTION MAXIMUM PRESSURE (kPa)

Base Unit 3100

Page 4

a50-8531

Fig. 1 — Unit Dimensions

HANGER BRACKET DIMENSIONS

221cm

2.54cm

PLAN VIEW

TOP

10.8cm

86.6cm

FRONT

CONTROL BOX

3.3cm

condensate

LEFT RETURN LEFT VIEW-

AIR COIL SIDE

LEFT RETURN END DISCHARGE

CBP

EAP

BSP

CAP

FRONT

CAP

CBP

CAP

EAP

BSP

FRONT

CONTROL BOX

PLAN VIEW

TOP

RIGHT RETURN RIGHT VIEW-

AIR COIL SIDE

RIGHT RETURN END DISCHARGE

3.3cm

condensate drain

LEFT RETURN STRAIGHT DISCHARGE

CAP

FRONT

BSP

EAP

CBP

BSP

RIGHT RETURN STRAIGHT DISCHARGE

EAP

2 CAP

CAP

FRONT

CBP

SERVICE ACCESS 3’ (91 cm.) TYPICAL

ALL CONFIGURATIONS

NOTES:

1. All dimensions in centimeters, unless indicated.

2. Access is required for all removable panels and installer should take care to comply with all building codes and allow adequate clearance.

3. Water inlet and outlet connections are available on either side of the unit. Plugs are shipped loose in a plastic bag tied to the water leg in front of the unit. Installer must plug unused connection.

4. Condensate drain connection is on end opposite of comressor.

5. Electrical access is available on either side of the front of the unit.

6. Electrical box is on right side but can be field-converted to left.

LEGEND

BSP — Blower Service Panel CAP — Control Access Panel CBP — Control Box Panel EAP — Expansion Valve Access Panel

CONNECTIONS

Water Outlet

/4FPT (072,096) 11/2FPT (120)

Water Inlet

/4FPT (072,096) 1

/2FPT (120)

Condensate Drain

/4FPT

High Voltage Access

/8K.O.

Low Voltage Access

/8K.O.

UNIT

50HQP

OVERALL

CABINET

(cm)

DISCHARGE

CONNECTIONS (cm)

(Duct Flange [± 0.1 cm])

WATER

CONNECTIONS

(cm)

ELECTRICAL KNOCKOUTS

(cm)

RETURN AIR

CONNECTIONS (cm)

(Using Return Air Opening)

DepthBWidthCHeight

DESupply

Depth

F Supply Height

GKLMOPQRSReturn

Depth

T Return Height

072-120 92.2 215.6 54.9 35.6 43.2 34.3 19.8 38.1 21.1 10.2 5.1 47.8 42.7 35.1 165.1 45.7 2.5 48.0

Page 5

Step 3 — Locate Unit — The following guidelines

Fig. 2 — Typical Horizontal Installation

LEGEND

BSP — Blower Service Panel CAP — Control Access Panel CBP — Control Box Panel EAP — Expansion Valve Access Panel

NOTES:

1. Access is required for all removable panels and installer should take care to comply with all building codes and allow adequate clearance.

2. Water inlet and outlet connections are available on either side of the unit. Plugs are shipped loose in a plastic bag tied to the water leg in front of the unit. Installer must plug unused connection.

3. Condensate drain connection is on end opposite of compressor.

4. Electrical access is available on either side of the front of the unit.

5. Electrical box is on right side but can be field-converted to left.

a50-8534

should be considered when choosing a location for a WSHP:

• Units are for indoor use only.

• Locate in areas where ambient temperatures are between

4.4 C and 37.8 C and relative humidity is no greater than 75%.

• Provide sufficient space for water, electrical and duct connections.

• Locate unit in an area that allows for easy access and removal of filter and access panels.

• Allow enough space for service personnel to perform maintenance.

• Provisions must be made for return air to freely enter the space if unit needs to be installed in a confined area such as a closet.

NOTE: Correct placement of the horizontal unit can play an important part in minimizing sound problems. Since ductwork is normally applied to these units, the unit can be placed so that the principal sound emission is outside the occupied space in sound-critical applications. A fire damper may be required by the local code if a fire wall is penetrated.

Step 4 — Mount Unit — Units should be mounted us-

ing the factory-installed hangers. See Fig. 3. Proper attachment

of hanging rods to building structure is critical for safety. See Fig. 2. Rod attachments must be able to support the weight of the unit. See Table 1 for unit operating weights.

Step 5 — Install Duct System — The duct system

should be sized to handle the design airflow quietly.

NOTE: Depending on the unit, the fan wheel may have a shipping support installed at the factory. This must be removed before operating unit.

SOUND ATTENUATION — To eliminate the transfer of vibration to the duct system, a flexible connector is recommended for both discharge and return air duct connections on metal duct systems. The supply and return plenums should include internal duct liner of fiberglass or be made of duct board construction to maximize sound attenuation of the blower. Installing the WSHP unit to uninsulated ductwork in an unconditioned space is not recommended since it will sweat and adversely affect the unit’s performance.

included in the supply and return air ducts, provided system performance is not adversely impacted. The blower speed can be also changed in the field to reduce air noise or excessive airflow, provided system performance is not adversely impacted.

To reduce air noise, at least one 90-degree elbow could be

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EXISTING DUCT SYSTEM — If the unit is connected to

3/8" [10MM] THREADED

ROD (FIELD SUPPLIED)

VIBRATION ISOLATOR

(FACTORY SUPPLIED)

WASHER

(FIELD SUPPLIED)

DOUBLE HEX NUTS

(FIELD SUPPLIED)

a50-6260e8535

Fig. 3 — Hanger Brackets

a50-6260ef8536

Fig. 4 — Horizontal Unit Pitch

*3/4" IPT

Trap Depth

1.5" [38mm]

Min 1.5"

[38mm]

1/4" per foot (21mm per m) drain slope

3/4" PVC or Copper by others

Vent

Fig. 5 — Trap Condensate Drain

a50-6260e8537

existing ductwork, consider the following:

• Verify that the existing ducts have the proper capacity to handle the unit airflow. If the ductwork is too small, larger ductwork should be installed.

• Check existing ductwork for leaks and repair as necessary.

NOTE: Local codes may require ventilation air to enter the space for proper indoor air quality. Hard-duct ventilation may be required for the ventilating air supply. If hard ducted ventilation is not required, be sure that a proper air path is provided for ventilation air to unit to meet ventilation requirement of the space.

Step 6 — Install Condensate Piping Drain

INSTALLATION — Slope the unit toward the drain at a 1 cm per 50 cm pitch. See Fig. 4. If it is not possible to meet the required pitch, a condensate pump should be installed at the unit to pump condensate to building drain.

Install condensate trap at each unit with the top of the trap

positioned below the unit condensate drain connection as shown in Fig. 5. Design the depth of the trap (water-seal) based upon the amount of ESP (external static pressure) capability of the blower (where 2 in. wg of ESP capability requires 2 in. of trap depth). As a general rule, 38 mm trap depth is the minimum. Each unit must be installed with its own individual trap and connection to the condensate line (main) or riser.

Units are not internally trapped, therefore an external trap is

necessary. Each unit must be installed with its own individual trap and means to flush or blowout the condensate drain line. Do not install units with a common trap or vent. For typical condensate connections see Fig. 5.

NOTE: Never use a pipe size smaller than the connection. VENTING — A vent should be installed in the condensate

line of any application which may allow dirt or air to collect in the line. Consider the following:

• Always install a vent where an application requires a long horizontal run.

• Always install a vent where large units are working against higher external static pressure and to allow proper drainage for multiple units connected to the same condensate main.

• Be sure to support the line where anticipated sagging from the condensate or when “double trapping” may occur.

• If condensate pump is present on unit, be sure drain connections have a check valve to prevent back flow of condensate into other units.

1/4” Pitch for Drainage

Drain Connection

Step 7 — Field Convert Air Discharge — Hori-

zontal units can be field converted between straight (side) and back (end) discharge.

NOTE: It is not possible to field convert return air between left or right return models due to the necessity of refrigeration copper piping changes.

Field conversion must be completed on the ground. If the unit is already hung it should be taken down for the field conversion. Place in a well-lighted area. Conversion should only be attempted by a qualified service technician.

SIDE TO BACK DISCHARGE CONVERSION

1. Remove back panel and side access panel. See Fig. 6.

2. Loosen 2 motor slide nuts, raise motor slide assembly and remove belt and motor sheave. See Fig. 7.

3. Remove blower sheave. Remove motor bolts and carefully remove motor. See Fig. 8.

4. Remove 2 motor clips and reattach to opposite side. See Fig. 9.

5. Unbolt (3 per side) complete housing assembly. See Fig. 9.

6. Rotate complete assembly into new position. Locate over mounting holes in base, reattach using 3 bolts per side.

Pitch Toward Drain

Page 7

REMOVE BLOWER PANEL AND ACCESS PANEL

RETURN AIR

FRONT

Fig. 6 — Removing Panels

a50-8538

MOTOR SLIDE NUTS

Fig. 7 — Removing Belt

a50-8539

REMOVE MOTOR AND BLOWER SHEAVE

ADJUSTING BOLT

REMOVE 4 MOTOR BOLTS

Fig. 8 — Removing Motor

a50-8540

MOTOR CLIPS

BOLTS

Fig. 9 — Removing Blower Assembly

a50-8541

7. Mount motor, motor sheave, blower sheave and belt.

8. Replace panels from Step 1.

BACK TO SIDE DISCHARGE CONVERSION — If the discharge is changed from back to side, use the above instructions. Note that figures will be reversed.

LEFT OR RIGHT RETURN UNITS — It is not possible to field convert return air between left or right return units due to the necessity of refrigeration copper piping changes. However, the conversion process of side to back or back to side discharge for either right or left return configuration is the same. In some cases, it may be possible to rotate the entire unit 180 degrees if the return air connection needs to be on the opposite side. Note that rotating the unit will move the piping to the other end of the unit.

Step 8 — Install Piping Connections — Depend-

ing on the application, there are 3 types of WSHP piping systems to choose from: water loop, ground-water and ground loop. Refer to the Carrier System Design Manual for additional information.

pipe thread fittings for water connections to prevent annealing and out-of-round leak problems which are typically associated with high temperature brazed connections. Refer to Table 1 for connection sizes. When making piping connections, consider the following:

• A backup wrench must be used when making screw con-

Make sure wires are not pinched and not over sharp edges. Adjust motor downward to tighten belt. Raise or lower motor slide assembly with adjusting bolt and retighten the 2 slide nuts. Check for correct tension. Rewire motor (at contactor) for correct rotation. Spin blower wheel to ensure wheel is not obstructed.

All WSHP units utilize low temperature soldered female

nections to unit to prevent internal damage to piping.

• Insulation may be required on piping to avoid condensation in the case where fluid in loop piping operates at temperatures below dew point of adjacent air.

• Piping systems that contain steel pipes or fittings may be subject to galvanic corrosion. Dielectric fittings may be used to isolate the steel parts of the system to avoid galvanic corrosion.

• Do not allow hoses to rest against structural building components. Compressor vibration may be transmitted through the hoses to the structure, causing unnecessary noise complaints.

Figure 10 shows a typical supply/return hose kit assembly.

WATER LOOP APPLICATIONS — Water loop applications usually include a number of units plumbed to a common piping system. Maintenance to any of these units can introduce air into the piping system. Therefore, air elimination equipment comprises a major portion of the mechanical room plumbing.

The flow rate is usually set between 2.41 and 3.23 L/m per

kW of cooling capacity. For proper maintenance and servicing, pressure-temperature (P/T) ports are necessary for temperature and flow verification.

In addition to complying with any applicable codes, consid-

er the following for system piping:

• Piping systems utilizing water temperatures below 10 C require 13 mm closed cell insulation on all piping surfaces to eliminate condensation.

Page 8

Step 9 — Install Field Power Supply Wiring

RIB CRIMPED

LENGTH

(2 FT [0.6M] LENGTH STANDARD)

SWIVEL BRASS FITTING

BRASS

FITTING

EPT

Fig. 10 — Supply/Return Hose Kit

WARNING

• All plastic to metal threaded fittings should be avoided due to the potential to leak. Use a flange fitted substitute.

• Teflon tape thread sealant is recommended to minimize internal fouling of the heat exchanger.

• Use backup wrench. Do not overtighten connections.

• Route piping to avoid service access areas to unit.

• The piping system should be flushed prior to operation to remove dirt and foreign materials from the system.

GROUND-LOOP APPLICATIONS — Temperatures between –3.9 and 43.3 C and a cooling capacity of 2.41 to

3.23 L/s per kW of flow per ton are recommended. In

addition to complying with any applicable codes, consider the following for system piping:

• Piping materials should be limited to only polyethylene fusion in the buried sections of the loop.

• Galvanized or steel fittings should not be used at any time due to corrosion.

• All plastic to metal threaded fittings should be avoided due to the potential to leak. Use a flange fitted substitute.

• Do not overtighten connections.

• Route piping to avoid service access areas to unit.

• Pressure-temperature (P/T) plugs should be used to measure flow of pressure drop.

GROUND-WATER APPLICATIONS — Typical groundwater piping is shown in Fig. 11. In addition to complying with any applicable codes, consider the following for system piping:

• Install shut-off valves for servicing.

• Install pressure-temperature plugs to measure flow and temperature.

• Boiler drains and other valves should be connected using a “T” connector to allow acid flushing for the heat exchanger.

• Do not overtighten connections.

• Route piping to avoid service access areas to unit.

• Use PVC SCH80 or copper piping material.

NOTE: PVC SCH40 should not be used due to system high pressure and temperature extremes.

Water Supply and Quantity

— Check water supply. Water supply should be plentiful and of good quality. See Table 2 for water quality guidelines.

IMPORTANT: Failure to comply with the above required water quality and quantity limitations and the closedsystem application design requirements may cause damage to the tube-in-tube heat exchanger that is not the responsibility of the manufacturer.

CAUTION

Use only copper conductors for field-installed electrical wiring. Unit terminals are not designed to accept other types of conductors.

All field-installed wiring, including the electrical ground, MUST comply with the National Electrical Code (NEC, U.S.A.) as well as applicable local codes. In addition, all field wiring must conform to the Class II temperature limitations described in the NEC.

Refer to unit wiring diagrams Fig. 12-16 for fuse sizes and a schematic of the field connections which must be made by the installing (or electrical) contractor.

Consult the unit wiring diagram located on the inside of the compressor access panel to ensure proper electrical hookup. The installing (or electrical) contractor must make the field connections when using field-supplied disconnect.

Operating voltage must be the same voltage and phase as shown in electrical data shown in Tables 3A and 3B.

Make all final electrical connections with a length of flexible conduit to minimize vibration and sound transmission to the building.

POWER CONNECTION — Line voltage connection is made by connecting the incoming line voltage wires to the L side of the power block terminal. See Fig. 17. See Tables 3A and 3B for correct wire and maximum overcurrent protection sizing. See Table 4 for low voltage VA ratings.

SUPPLY VOLTAGE — Operating voltage to unit must be within voltage range indicated on unit nameplate.

On 3-phase units, voltages under load between phases must be balanced within 2%. Use the following formula to determine the percentage voltage imbalance:

% Voltage Imbalance

= 100 x

Example: Supply voltage is 420-3-50.

max voltage deviation from average voltage

average voltage

AB = 425 volts BC = 422 volts AC = 417 volts

Average Voltage =

425 + 422 + 417

1264

In all applications, the quality of the water circulated through the heat exchanger must fall within the ranges listed in the Water Quality Guidelines table. Consult a local water treatment firm, independent testing facility, or local water authority for specific recommendations to maintain water quality within the published limits.

= 421

Determine maximum deviation from average voltage: (AB) 425 – 421 = 4 v

(BC) 422 – 421 = 1 v (AC) 421 – 418 = 3 v

Maximum deviation is 4 v.

Page 9

Determine percent voltage imbalance.

PressureTemperature Plugs

Boiler Drains

Strainer – Field-Installed Accessory (16 to 20 mesh recommended for filter sediment)

Shut-Off Valve

Water Control Valve

Automatic Balance Valve

Expansion

Tank

Water Out

Water In From Pump

Fig. 11 — Typical Ground-Water Piping Installation

a50-8542

% Voltage Imbalance = 100 x

421

= 0.95%

This amount of phase imbalance is satisfactory as it is

below the maximum allowable 2%.

Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components.

NOTE: If more than 2% voltage imbalance is present, contact local electric utility.

EXTERNAL LOOP POWER CONNECTION — If the unit is to be connected to an external loop pump or flow controller, connect the pump to the loop pump terminal block PB1. The maximum power handling is 4 amps at 240 volts. The pumps will automatically cycle as required by the unit.

420-VOLT OPERATION — All 380/420 volt units are factory wired for 380 volts. The transformers may be switched to 420-volt operation (as illustrated on the wiring diagram) by disconnecting the VIO lead at L1 and attaching the BRN lead to L1. Close open end of VIO lead.

Page 10

Table 2 — Water Quality Guidelines

CONDITION

Scaling Potential — Primary Measurement

Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below.

pH/Calcium Hardness Method

Index Limits for Probable Scaling Situations (Operation outside these limits is not recommended.)

Scaling indexes should be calculated at 150 F for direct use and HWG applications, and at 90 F for indirect HX use. A monitoring plan should be implemented.

Ryznar Stability Index

Langelier Saturation Index

Iron Fouling

(Ferrous)

Iron Fe (Bacterial Iron Potential)

Iron Fouling

Corrosion Prevention††

Hydrogen Sulfide (H

Ammonia Ion as Hydroxide, Chloride, Nitrate and Sulfate Compounds

Maximum Chloride Levels Maximum allowable at maximum water temperature.

Erosion and Clogging

Particulate Size and Erosion

Brackish

LEGEND

HWG — Hot Water Generator HX — Heat Exchanger N/A — Design Limits Not Applicable Considering Recirculating

NR — Application Not Recommended SS — Stainless Steel

*Heat exchanger materials considered are copper, cupronickel, 304 SS (stainless steel), 316 SS, titanium. †Closed recirculating system is identified by a closed pressurized piping system. **Recirculating open wells should observe the open recirculating design considerations.

Potable Water

MATERIAL*

CLOSED RECIRCULATING† OPEN LOOP AND RECIRCULATING WELL**

All N/A pH < 7.5 and Ca Hardness, <100 ppm

All N/A

All

6 - 8.5

Monitor/treat as needed.

If >7.5 minimize steel pipe use.

Based upon 150 F HWG and direct well, 85 F indirect well HX.

If Fe

(ferrous) >0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.

If <–0.5 minimize steel pipe use.

Above this level deposition will occur.

Minimize steel pipe below 7 and no open tanks with pH <8.

6.0 - 7.5

–0.5 to +0.5

<0.2 ppm (Ferrous)

<0.5 ppm of Oxygen

6 - 8.5

<0.5 ppm

At H

S>0.2 ppm, avoid use of copper and cupronickel piping or HXs.

All N/A

Copper N/A

CuproNickel N/A <150 ppm NR NR

304 SS N/A <400 ppm <250 ppm <150 ppm 316 SS N/A <1000 ppm <550 ppm <375 ppm

Titanium N/A >1000 ppm >550 ppm >375 ppm

<10 ppm of particles and a max-

All

imum velocity of 6 fps. Filtered

for maximum

800 micron size.

All N/A

<10 ppm (<1 ppm “sand free” for reinjection) of particles and a maximum velocity of 6 fps. Filtered for maximum 800 micron size. Any particulate that is not removed can potentially clog components.

Use cupronickel heat exchanger when concentrations of calcium or sodium chloride are greater than 125 ppm are present. (Seawater is approximately 25,000 ppm.)

Copper alloy (bronze or brass) cast components are okay to <0.5 ppm.

Rotten egg smell appears at 0.5 ppm level.

<0.5 ppm

50 F (10 C) 75 F (24 C) 100 F (38 C)

<20 ppm NR NR

††If the concentration of these corrosives exceeds the maximum allowable level, then the potential for serious corrosion problems exists. Sulfides in the water quickly oxidize when exposed to air, requiring that no agitation occur as the sample is taken. Unless tested immediately at the site, the sample will require stabilization with a few drops of one Molar zinc acetate solution, allowing accurate sulfide determination up to 24 hours after sampling. A low pH and high alkalinity cause system problems, even when both values are within ranges shown. The term pH refers to the acidity, basicity, or neutrality of the water supply. Below

7.0, the water is considered to be acidic. Above 7.0, water is considered to be basic. Neutral water contains a pH of 7.0. NOTE: To convert ppm to grains per gallon, divide by 17. Hardness in mg/l is equivalent to ppm.

Page 11

BC — Blower Contactor CB — Circuit Breaker CC — Compressor Contactor CO — Sensor, Condensate Overflow DPP — Dual Point Power FP1 — Sensor, Water Coil Freeze Protection FP2 — Sensor, Air Coil Freeze Protection HP — High-Pressure Switch HPWR — High-Pressure Water Relay JW3 — Clippable Field Selection Jumper LOC — Loss of Charge Pressure Switch PDB — Power Distribution Block RVS — Reversing Valve Solenoid TRANS — Tr a n sf o r me r TXV — Thermostatic Expansion Valve

Factory Line Voltage Wiring Factory Low Voltage Wiring

NOTES:

1. Compressor and blower motor thermally protected internally.

2. All wiring to the unit must comply with NEC (National Electrical Code, U.S.A.) and local codes.

3. 380/420-v transformers will be connected for 380-v operation. For 420-v operation, disconnect VIO lead at L1, and attach BRN lead to L1. Close open end of VIO lead.

4. FPI thermistor provides freeze protection for WATER. When using ANTIFREEZE solutions, cut JW3 jumper.

5. Typical heat pump thermostat wiring shown. Refer to thermostat installation instructions for wiring to the unit. Thermostat wiring

must be “Class 1” and voltage rating equal to or greater than unit supply voltage.

6. 24-v alarm signal shown. For dry alarm contact, cut JW1 jumper and dry contact will be available between AL1 and AL2.

7. Transformer secondary ground via Complete C board standoffs and screws to control box. (Ground available from top two standoffs as shown.)

8. Suffix 1 designates association with lead compressor. Suffix 2 with lag compressor.

9. For dual point power (DPP) option, blower wire will connect to other PBD.

LEGEND

Field Line Voltage Wiring Field Low Voltage Wiring Printed Circuit Trace Optional Wiring

Relay/Contactor Coil

Thermistor

Condensate Pan

Circuit Breaker

Ground

Solenoid Coil

Relay Contacts - N.O.

Relay Contacts - N.C.

Temperature Switch

Switch - Low Pressure

Switch - High Pressure

Wire Nut

Fig. 12 — 50HQP072-120 Units — Typical Control Wiring with Complete C Control

Complete C

Complete C1

Complete C

Complete C2

Complete C1

Page 12

Fig. 13 — 50HQP072-120 Units — Typical Control Wiring with Deluxe D Control

See legend and notes on page 11.

Deluxe D1

Deluxe D

Deluxe D2

Deluxe D

Deluxe D2

Deluxe D1

Page 13

AL1

AL2

CMP1

FAN

PWR

HS1/EXH/RVS

PREMIER

LINK

COMPLETE

CONTROL

PWR

S P

S A

L W

CMPSAFE

AL1

CMP1

FAN

PWR

PREMIER

LINK

DELUXE

CONTROL

PWR

CMPSAFE

HS2

HS1

CMP2

O/W2

S P T

S A T

Fig. 14 — Premierlink™ Controller Applications Wiring with Complete C Control

LEGEND

NOTE: Reversing valve is on in Cooling mode.

CR — Control Relay LWT — Leaving Water Temperature Sensor SAT — Supply Air Temperature Sensor SPT — Space Temperature Sensor

Fig. 15 — Premierlink Controller Applications Wiring with Deluxe D Control

LEGEND

NOTE: Reversing valve is on in Cooling mode.

LWT — Leaving Water Temperature Sensor SAT — Supply Air Temperature Sensor SPT — Space Temperature Sensor

Page 14

Table 3A — Electrical Data — 50HQP072-120 Standard Units

NOTE: Low voltage connector may be removed for easy installation.

Fig. 16 — Low Voltage Field Wiring

Fig. 17 — Line Voltage Wiring

UNIT

50HQP

072 9 380/420-3-50 360/440 A,B,C 2 5.4 38.0 1.8 12.6 13.9 15 096 9 380/420-3-50 360/440 A,B,C 2 6.1 43.0 3.4 15.6 17.1 20 120 9 380/420-3-50 360/440 A,B,C 2 7.8 51.5 4.9 20.5 22.5 30

VOLTAGE

CODE

VO LTAGE

MIN/MAX

VOLTAGE

BLOWER

OPTION

COMPRESSOR FAN

QTY RLA LRA

MOTOR

FLA

TOTAL

UNIT

FLA

MIN

CIRCUIT

AMP

Table 3B — Electrical Data — 50HQP072-120 Dual Point Power Units

UNIT

50HQP

LEGEND

FLA — Full Load Amps HACR — Heating, Air Conditioning, and Refrigeration LRA — Locked Rotor Amps MCA — Minimum Circuit Amps RLA — Rated Load Amps

*Time-delay fuse or HACR circuit breaker.

VOLTAGE

CODE

072 9 380/420-3-50 360/440 A,B,C 2 5.4 38.0 10.8 12.2 15 1.8 2.3 15 096 9 380/420-3-50 360/440 A,B,C 2 6.1 43.0 12.2 13.7 15 3.4 4.3 15 120 9 380/420-3-50 360/440 A,B,C 2 7.8 51.5 15.6 17.6 25 4.9 6.1 15

VO LTAGE

MIN/MAX VOLTAGE

BLOWER

OPTION

QTY RLA LRA

COMPRESSOR

Tot al

Comp

FLA

Comp

MCA

Comp

Max

Fuse

EMERGENCY

POWER SUPPLY

Fan

Motor

FLA

Fan

MCA

Table 4 — Low Voltage VA Ratings

MAX

FUSE

FAN

MAX

FUSE

COMPONENTS IN UNIT VA Typical Blower Contactor 6 - 9 Typical Reversing Valve Solenoid (2) 8 - 12 30A Compressor Contactor (2) 12 - 18 Complete C Board (2) 10 - 18 Deluxe D Board (2) 16 - 24

Remaining VA for Accessories* Units with Complete C Units with Deluxe D

* Standard transformer is 75 VA.

18 - 39 12 - 33

Complete C 2Complete C 1

POWER BLOCK

Page 15

Step 10 — Install Field Control Wiring

a50-6268tf.tif

AQUAZONE CONTROL (Complete C Control Shown)

Fig. 18 — Typical Aquazone™ Control Board

Jumper Locations

TYPICAL WATER VALVE

24 VAC

TERMINAL STRIP P2

Fig. 19 — Typical Aquazone Accessory Wiring

(Control D Shown)

THERMOSTAT

Compressor-Stage 1

Reversing Valve

Fan

24Vac Hot

CompleteC 1

24Vac Com

Compressor-Stage 2

CompleteC 2

Fig. 20 — Thermostat Wiring to Complete C Board

THERMOSTAT

Compressor-Stage 1

Reversing Valve

Fan

24Vac Hot

Deluxe D 1

24Vac Com

Compressor-Stage 2

AL1

COM 2

Deluxe D 2

Fig. 21 — Thermostat Wiring to Deluxe D Board

THERMOSTAT CONNECTIONS — The thermostat should be wired directly to the Aquazone™ control board. See Fig. 18 and 19.

The thermostat should be located on an interior wall in a larger room, away from supply duct drafts. DO NOT locate the thermostat in areas subject to sunlight, drafts or on external walls. The wire access hole behind the thermostat may in certain cases need to be sealed to prevent erroneous temperature measurement.

Position the thermostat back plate against the wall so that it appears level and so the thermostat wires protrude through the middle of the back plate. Mark the position of the back plate mounting holes and drill holes with a plied anchors and secure plate to the wall. Thermostat wire must be 18 AWG (American Wire Gage) wire. Wire the appropriate thermostat as shown in Fig. 20 and 21 to the low voltage terminal strip on the Complete C or Deluxe D control board.

Most heat pump thermostats will work with a Carrier unit, provided the thermostat has the correct number of heating and cooling stages.

WATER FREEZE PROTECTION — The Aquazone control allows the field selection of source fluid freeze protection points through jumpers. The factory setting of jumper JW3 (FP1) is set for water at –1.1 C. In earth loop applications, jumper JW3 should be clipped to change the setting to –12.2 C when using antifreeze in colder earth loop applications. See Fig. 18.

AIR COIL FREEZE PROTECTION — The air coil freeze protection jumper JW2 (FP2) is factory set for –1.1 C and should not need adjusting.

ACCESSORY CONNECTIONS — Terminal labeled A on the control is provided to control accessory devices such as water valves, electronic air cleaners, humidifiers, etc. This signal operates with the compressor terminal. See Fig. 19. Refer to the specific unit wiring schematic for details.

NOTE: The A terminal should only be used with 24 volt signals — not line voltage signals.

/16-in. bit. Install sup-

WATER SOLENOID VALVES — Water solenoid valves may be used on variable flow systems and ground water installations. A typical well water control valve wiring which can limit waste water in a lockout condition is shown in Fig. 18. A slow closing valve may be required to prevent water hammer. When using a slow closing valve, special wiring conditions need to be considered. The valve takes approximately 60 seconds to open (very little water will flow before 45 seconds) and it activates the compressor only after the valve is completely opened by closing its end switch. When wired as shown, the valve will have the following operating characteristics:

1. Remain open during a lockout.

2. Draw approximately 25 to 35 VA through the “Y” signal of the thermostat.

IMPORTANT: The use of a slow-closing water solenoid valve can overheat the anticipators of electromechanical thermostats. Only use relay based electronic thermostats.

Page 16

PRE-START-UP

System Checkout —

follow the system checkout procedure outlined below before starting up the system. Be sure:

1. Voltage is within the utilization range specifications of the unit compressor and fan motor and voltage is balanced for 3-phase units.

2. Fuses, breakers and wire are correct size.

3. Low voltage wiring is complete.

4. Piping and system flushing is complete.

5. Air is purged from closed loop system.

6. System is balanced as required. Monitor if necessary.

7. Isolation valves are open.

8. Water control valves or loop pumps are wired.

9. Condensate line is open and correctly pitched.

10. Transformer switched to lower voltage tap if necessary.

11. Blower rotates freely — shipping support is removed.

12. Blower speed is on correct setting.

13. Air filter is clean and in position.

14. Service/access panels are in place.

15. Return-air temperature is 4.4 to 26.7 C for heating and

10.0 to 43.3 C for cooling.

16. Air coil is clean.

17. Control field selected settings are correct.

AIR COIL — To obtain maximum performance, the air coil should be cleaned before starting the unit. A ten percent solution of dishwasher detergent and water is recommended for both sides of the coil. Rinse thoroughly with water.

When the installation is complete,

Airflow and External Static Pressure — The

50HQP units are available with standard, low, and high-static factory-installed options. These options will substitute a different blower drive sheave for each static range. In addition, certain static ranges may require the optional large fan motor.

SHEAVE ADJUSTMENT — The 50HQP units are supplied with a variable sheave drive on the fan motor to adjust for differing airflows at various ESP (external static pressure) conditions. See Tables 5-7 for unit airflows. When fully closed, the sheave will produce the highest static capability (higher rpm).

To adjust sheave position, follow the procedure outlined

below:

1. Loosen belt tension and remove belt.

2. Loosen set screw on fan motor.

3. Open sheave to desired position.

4. Retighten set screw and replace belt. NOTE: Set belt tension as outlined below. BELT TENSION ADJUSTMENT — An overly loose belt

will, upon starting motor, produce a slippage “squeal” and cause premature belt failure and or intermittent airflow. An overly tight belt can cause premature motor or blower bearing failure. To adjust the belt tension, follow the procedure outlined below:

1. Remove belt from motor sheave.

2. Lift motor assembly.

3. Loosen the

/16-in. hex nuts on the grommet motor adjustment bolts (2 per bolt). To increase the belt tension loosen the top hex nut. To decrease the belt tension loosen the bottom hex nut.

4. Turn the bolts by hand to the desired position then tighten

the

/16-in. hex nuts (2 per bolt).

5. Lower the motor assembly.

6. Install the belt.

7. The belt tension can be adjusted by using one of the following methods:

a. Tighten until belt deflects approximately 13 mm

with very firm finger pressure.

b. Grasp belt midway between two pulleys and twist

for a 90-degreerotation. NOTE: Adjusting less than 90 degrees will over-

tighten the belt and adjusting more than 90degrees will loosen belt.

c. Set proper belt tension to 32 to 36 kg.

NOTE: The motor position should not need adjustment. Motor sheave position is at mid position of each sheave. For example, the motor sheave is 2.5 turns open on a 5-turn sheave. The belt tension adjustment can also be accomplished by turning the

/16-in. hex nuts to the desired position.

NOTE: Available airflows for all units are shown in Tables 5-7.

Page 17

Table 5 — Blower Data — 50HQP072

AIRFLOW

(l/s)

BkW — — 0.09 0.12 0.14 0.17 0.19 0.21 0.24 0.25 0.27 0.29 0.31 0.32 0.34 0.35

Sheave/Mtr ——BAAAAACCCCCCCC

614

661

708

755

802

850

897

944

991

1038

1086

1133

1180

LEGEND NOTES:

——Operation Not Recommended BkW — Brake Kilowatts ESP — External Static Pressure RPM — Revolutions Per Minute A—Units with Standard Rpm/Standard Motor Option B—Units with Low Rpm/Standard Motor Option C—Units with High Rpm/Standard Motor Option

RPM — — 505 563 615 655 695 730 765 790 815 840 870 890 910 925

Turns Open ——353.532154.543.52.52.521.5

BkW — 0.120.140.170.190.220.240.260.290.300.330.340.360.380.40 —

Sheave/Mtr —BA AAACCCCCCCCC—

RPM — 526 578 635 675 715 755 785 815 840 870 890 910 930 950 —

Turns Open — 24.532.51.554.543.53 2 21.51 —

BkW 0.12 0.14 0.17 0.19 0.22 0.25 0.27 0.29 0.32 0.34 0.36 0.38 0.41 0.43 — —

Sheave/Mtr BBAA AACCCCCCCC——

RPM 500 547 604 650 695 735 775 805 835 865 890 915 940 960 — —

Turns Open 31.54 3 2 14.543.532.521.51 ——

BkW 0.14 0.17 0.19 0.22 0.25 0.27 0.29 0.32 0.34 0.37 0.39 0.41 0.44 — — —

Sheave/Mtr BBAA AACCCCCCC———

RPM 510 568 620 665 710 750 785 820 855 885 910 935 960 — — —

Turns Open 2.513.52.51.514.53.532.521.51 ———

BkW 0.16 0.19 0.22 0.24 0.27 0.29 0.32 0.34 0.36 0.39 0.42 0.44 — — — —

Sheave/Mtr BAAA ACCCCCCC————

RPM 531 583 635 680 720 765 800 835 870 900 925 950 — — — —

Turns Open 2 4.5 3.5 2.5 1.5 5 4 3.5 2.5 2 1.5 1 — — — —

BkW 0.15 0.18 0.21 0.24 0.26 0.29 0.31 0.34 0.36 0.39 0.42 0.45 — — — —

Sheave/Mtr BBAA AACCCCCC————

RPM 500 547 599 645 690 735 775 815 850 885 910 940 — — — —

Turns Open 31.543215432.521.5————

BkW 0.18 0.21 0.23 0.27 0.30 0.33 0.36 0.40 0.43 0.46 0.49 0.52 — — — —

Sheave/Mtr BBAA AACCCCCC————

RPM 510 557 604 655 695 740 780 820 855 890 920 950 — — — —

Turns Open 2.5 1.5 4 3 2 1 4.5 3.5 3 2 1.5 1 — — — —

BkW 0.21 0.23 0.26 0.29 0.33 0.37 0.41 0.44 0.48 0.50 0.54 0.56 — — — —

Sheave/Mtr BBAA ACCCCCCC————

RPM 521 568 615 660 705 750 785 825 865 895 930 960 — — — —

Turns Open 2.5 1 3.5 2.5 1.5 5.5 4.5 3.5 2.5 2 1.5 1 — — — —

BkW 0.25 0.28 0.32 0.34 0.37 0.40 0.44 0.48 0.52 0.55 0.58 — — — — —

Sheave/Mtr BAAA ACCCCCC—————

RPM 536 583 630 670 715 755 795 835 875 905 940 — — — — —

Turns Open 2 4.5 3.5 2.5 1.5 5 4 3.5 2.5 2 1 — — — — —

BkW 0.28 0.30 0.34 0.37 0.41 0.45 0.48 0.52 0.56 0.59 0.62 — — — — —

Sheave/Mtr

RPM 557 599 645 685 730 770 810 850 885 915 950 — — — — —

Turns Open 543215432.51.51—————

BkW 0.32 0.35 0.38 0.42 0.45 0.48 0.52 0.56 0.60 0.63 0.67 — — — — —

Sheave/Mtr AAAA ACCCCCC—————

RPM 573 620 660 705 745 785 820 860 895 925 960 — — — — —

Turns Open 4.53.531.514.53.53 21.51 —————

BkW 0.360.390.430.460.490.540.580.620.650.69——————

Sheave/Mtr AAAACCCCCC——————

RPM 609645690730765805845880910945——————

Turns Open 4 32.51.55 4 32.52 1 ——————

BkW 0.390.420.460.490.540.580.620.660.700.73——————

Sheave/Mtr AAAACCCCCC——————

RPM 620660700740780815850885920950——————

Turns Open 3.53 2 14.54 32.51.51 ——————

0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375

AAAAACCCCCC—————

EXTERNAL STATIC PRESSURE (Pa)

1. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/Standard Motor.

2. Unit factory shipped with standard static sheave and drive at 2.5 turns open. Other speed require field selection.

3. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions.

4. All airflow is rated at lowest voltage if unit is dual voltage rated, i.e., 380V for 380/420V units.

5. Airflow in l/s with wet coil and clean filter.

a50-8544

Page 18

Table 6 — Blower Data — 50HQP096

AIRFLOW

(l/s)

BkW — 0.15 0.18 0.21 0.24 0.27 0.30 0.32 0.34 0.36 0.39 0.42 0.46 0.49 0.52 0.55

Sheave/Mtr —BBBAAAAAACCCCCC

850

897

944

991

1038

1086

1133

1180

1227

1274

1322

1369

1416

1463

1510

RPM — 500 552 604 655 700 745 780 820 855 890 915 945 970 995 1020

Turns Open — 4.5 3 1.5 5.5 4.5 3.5 2.5 2 1 4 3.5 3 2.5 2 1.5

BkW 0.19 0.21 0.24 0.28 0.31 0.34 0.38 0.41 0.44 0.47 0.50 0.53 0.55 0.58 0.61 —

Sheave/Mtr BBAAAAAAACCCCCC—

RPM 521 573 625 670 710 755 795 830 870 900 930 960 990 1015 1040 —

Turns Open 42.565432.51.513.532.521.51—

BkW 0.20 0.22 0.25 0.28 0.32 0.36 0.39 0.42 0.46 0.49 0.52 0.55 0.58 0.60 0.63 —

Sheave/Mtr BBBAAAAAACCCCCC—

RPM 500 542 594 640 685 730 770 805 845 880 915 945 975 1005 1030 —

Turns Open 4.53.525.54.53.532143.52.521.51—

BkW 0.24 0.27 0.30 0.33 0.36 0.39 0.43 0.47 0.51 0.54 0.57 0.60 0.63 0.66 0.69 —

Sheave/Mtr BBBAAAAAACCCCCC—

RPM 516 563 615 655 700 740 780 820 860 895 925 960 990 1020 1045 —

Turns Open 431.55.54.53.52.521432.5211—

BkW 0.26 0.29 0.32 0.36 0.40 0.43 0.47 0.51 0.54 0.58 0.61 0.64 0.67 0.71 — —

Sheave/Mtr BBAAAAAACCCCCC——

RPM 536 583 630 670 715 755 795 835 870 905 935 970 1000 1030 — —

Turns Open 3.52.565432.51.543.5321.51——

BkW 0.30 0.34 0.37 0.40 0.43 0.47 0.51 0.55 0.59 0.62 0.66 0.69 0.73 0.77 — —

Sheave/Mtr BBAAAAAACCCCCC——

RPM 557 604 650 690 730 770 810 845 885 915 950 980 1010 1040 — —

Turns Open 3 2 5.5 4.5 3.5 3 2 1 4 3.5 2.5 2 1.5 1 — —

BkW 0.34 0.37 0.41 0.44 0.47 0.51 0.56 0.60 0.64 0.67 0.71 0.74 0.78 — — —

Sheave/Mtr BAAAAAAACCCCC———

RPM 583 625 665 705 745 785 825 860 895 925 960 990 1020 — — —

Turns Open 2.5 6 5 4 3.5 2.5 1.5 1 4 3 2.5 2 1 — — —

BkW 0.38 0.41 0.44 0.48 0.52 0.56 0.61 0.65 0.69 0.72 0.75 0.79 0.83 — — —

Sheave/Mtr BAAAAAACCCCCC———

RPM 604 645 685 725 765 800 835 875 905 940 970 1005 1030 — — —

Turns Open 2 5.5 4.5 4 3 2 1.5 4 3.5 3 2 1.5 1 — — —

BkW 0.41 0.45 0.48 0.51 0.55 0.60 0.64 0.69 0.72 0.76 0.80 0.85 — — — —

Sheave/Mtr AAAAAAACCCCC————

RPM 625 665 700 740 775 815 850 885 915 950 985 1015 — — — —

Turns Open 654.53.532143.52.521.5————

BkW 0.45 0.49 0.52 0.56 0.60 0.64 0.68 0.73 0.77 0.81 0.85 0.90 — — — —

Sheave/Mtr AAAAAAACCCCC————

RPM 645 685 720 760 795 830 865 900 930 960 995 1025 — — — —

Turns Open 5.5 4.5 4 3 2.5 1.5 1 3.5 3 2.5 1.5 1 — — — —

BkW 0.49 0.53 0.57 0.61 0.65 0.69 0.74 0.78 0.82 0.86 0.91 0.96 — — — —

Sheave/Mtr AAAAAACCCCCC————

RPM 665 705 745 780 810 845 880 910 945 975 1005 1035 — — — —

Turns Open 5 4 3.5 2.5 2 1 4 3.5 2.5 2 1.5 1 — — — —

BkW 0.53 0.57 0.61 0.65 0.69 0.73 0.77 0.82 0.87 0.91 0.96 1.02 — — — —

Sheave/Mtr AAAAAACCCCCC————

RPM 685 720 760 795 825 860 890 920 955 985 1015 1045 — — — —

Turns Open 4.54 32.51.51 4 32.521.51 ————

BkW 0.58 0.62 0.67 0.71 0.75 0.79 0.84 0.88 0.93 0.97 1.03 — — — — —

Sheave/Mtr A AAA ACCCCCC—————

RPM 700 735 775 810 845 875 910 940 970 1000 1030 — — — — —

Turns Open 4.5 3.5 2.5 2 1 4 3.5 3 2 1.5 1 — — — — —

BkW 0.64 0.68 0.72 0.76 0.80 0.85 0.90 0.97 1.02 1.07 1.12 — — — — —

Sheave/Mtr A AAA ACCCCCC—————

RPM 720 755 790 825 860 890 920 955 985 1015 1040 — — — — —

Turns Open 4 32.51.51 4 32.521.51 —————

BkW 0.700.750.800.850.900.940.991.031.081.13——————

Sheave/Mtr A AAACCCCCC——————

RPM 7407758108408759059359659951025——————

Turns Open 3.52.521.543.532.51.51 ——————

0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375

LEGEND NOTES:

——Operation Not Recommended BkW — Brake Kilowatts ESP — External Static Pressure RPM — Revolutions Per Minute A—Units with Standard Static/Standard Motor Option B—Units with Low Static/Standard Motor Option C—Units with High Static/Standard Motor Option

EXTERNAL STATIC PRESSURE (Pa)

1. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/Standard Motor.

2. Unit factory shipped with standard static sheave and drive at 2.5 turns open. Other speed require field selection.

3. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions.

4. All airflow is rated at lowest voltage if unit is dual voltage rated, i.e., 380V for 380/420V units.

5. Airflow in l/s with wet coil and clean filter.

Page 19

Table 7 — Blower Data — 50HQP120

AIRFLOW

(l/s)

BkW — 0.290.310.350.390.420.460.500.540.570.600.630.670.700.730.76

Sheave/Mtr —BBBBAAAAAACCCCC

1038

1086

1133

1180

1227

1274

1322

1369

1416

1463

1510

1558

LEGEND NOTES:

RPM — 573 620 665 705 745 785 825 865 900 930 960 995 1020 1050 1075

Turns Open — 4.5 3.5 2.5 1.5 5.5 4.5 3.5 3 2 1.5 3.5 3 2.5 2 1.5

BkW 0.30 0.33 0.37 0.40 0.43 0.46 0.50 0.54 0.58 0.61 0.65 0.68 0.72 0.76 0.80 0.85

Sheave/Mtr BBBBAAAAAAACCCCC

RPM 547 594 640 680 720 760 800 840 875 910 940 975 1005 1035 1060 1090

Turns Open 54326543.52.521.53.5321.51

BkW 0.34 0.37 0.40 0.43 0.47 0.50 0.55 0.59 0.63 0.66 0.70 0.73 0.77 0.82 0.86 —

Sheave/Mtr BBBBAAAAAAACCCC—

RPM 573 615 660 700 740 775 815 855 890 920 955 985 1015 1045 1075 —

Turns Open 4.53.52.525.54.54 32.51.51 32.521.5—

BkW 0.37 0.40 0.44 0.47 0.51 0.55 0.60 0.64 0.68 0.71 0.75 0.78 0.82 0.87 0.91 —

Sheave/Mtr BBBAAAAAAACCCCC—

RPM 594 635 675 715 755 790 830 865 900 930 965 995 1025 1055 1085 —

Turns Open 4 32.56 54.53.53 21.53.532.51.51 —

BkW 0.40 0.44 0.47 0.51 0.55 0.59 0.63 0.67 0.72 0.75 0.79 0.83 0.88 0.92 0.96 —

Sheave/Mtr BBBAAAAAAACCCCC—

RPM 615 655 690 730 770 805 840 875 910 940 975 1005 1035 1065 1095 —

Turns Open 3.5 3 2 5.5 5 4 3.5 2.5 2 1 3.5 3 2 1.5 1 —

BkW 0.44 0.47 0.51 0.55 0.59 0.63 0.67 0.71 0.75 0.79 0.84 0.88 0.93 0.97 — —

Sheave/Mtr BBBAAAAAAACCCC——

RPM 635 670 710 750 785 820 855 885 920 950 985 1015 1045 1075 — —

Turns Open 32.51.554.53.532.51.51 32.521.5——

BkW 0.47 0.51 0.55 0.59 0.64 0.67 0.72 0.76 0.80 0.84 0.89 0.94 1.00 1.05 — —

Sheave/Mtr BBAAAAAAACCCCC——

RPM 650 690 725 765 800 830 865 900 930 960 995 1025 1055 1085 — —

Turns Open 326543.5321.53.532.51.51——

BkW 0.52 0.55 0.59 0.63 0.67 0.71 0.75 0.80 0.85 0.89 0.94 0.99 1.04 1.10 — —

Sheave/Mtr BBAAAAAAACCCCC——

RPM 670 705 745 780 810 845 875 910 940 970 1000 1030 1060 1090 — —

Turns Open 2.5 1.5 5.5 4.5 4 3 2.5 2 1 3.5 3 2 1.5 1 — —

BkW 0.57 0.60 0.65 0.68 0.73 0.77 0.82 0.86 0.91 0.95 1.00 1.05 1.11 — — —

Sheave/Mtr BAAAAAAAACCCC———

RPM 685 720 760 790 825 860 895 925 955 985 1015 1045 1075 — — —

Turns Open 2654.53.5321.5132.521.5———

BkW 0.61 0.66 0.70 0.75 0.79 0.82 0.89 0.94 0.99 1.05 1.09 1.15 1.20 — — —

Sheave/Mtr BAAAAAAACCCCC———

RPM 700 735 775 810 845 875 910 940 970 1000 1025 1055 1085 — — —

Turns Open Open25.54.54 32.521.53.532.51.5———

BkW 0.68 0.73 0.77 0.82 0.88 0.92 0.96 1.01 1.05 1.10 1.16 1.20 1.26 — — —

Sheave/Mtr AAAAAAAACCCCC———

RPM 725 760 790 825 860 890 920 950 980 1010 1040 1065 1095 — — —

Turns Open 6 54.53.53 21.513.52.521.51 ———

BkW 0.74 0.79 0.83 0.88 0.94 0.98 1.02 1.07 1.11 1.16 1.21 1.26 — — — —

Sheave/Mtr AAAAAAACCCCC————

RPM 740 775 805 840 875 905 935 965 995 1020 1050 1075 — — — —

Turns Open 5.54.543.52.521.53.532.521.5————

0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375

EXTERNAL STATIC PRESSURE (Pa)

1. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/Standard Motor.

2. Unit factory shipped with standard static sheave and drive at 2.5 turns open. Other speed require field selection.

3. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions.

4. All airflow is rated at lowest voltage if unit is dual voltage rated, i.e., 380V for 380/420V units.

5. Airflow in l/s with wet coil and clean filter.

Page 20

Table 7 — Blower Data — 50HQP120 (cont)

AIRFLOW

(l/s)

BkW 0.79 0.85 0.89 0.94 0.99 1.04 1.08 1.12 1.17 1.23 1.29 1.35 — — — —

Sheave/Mtr AAAAAAACCCCC————

1605

1652

1699

1746

1794

1841

1888

LEGEND NOTES:

RPM 755 790 820 855 890 920 945 975 1005 1035 1060 1090 — — — —

Turns Open 54.53.53 21.513.53 21.51 ————

BkW 0.87 0.91 0.96 1.02 1.06 1.11 1.15 1.20 1.24 1.29 1.34 — — — — —

Sheave/Mtr AAAA AACCCCC—————

RPM 780 810 845 880 910 940 970 1000 1025 1050 1080 — — — — —

Turns Open 4.54 32.52 13.532.52 1 —————

BkW 0.94 0.99 1.04 1.09 1.15 1.20 1.25 1.30 1.35 1.40 1.45 — — — — —

Sheave/Mtr AAAA ACCCCCC—————

RPM 805 835 870 900 930 960 990 1015 1045 1070 1100 — — — — —

Turns Open 43.52.521.53.532.521.51 —————

BkW 1.011.051.101.161.211.261.321.371.431.49——————

Sheave/Mtr AAAA ACCCCC——————

RPM 825 855 885 915 945 975 1005 1030 1060 1085 ——————

Turns Open 3.532.51.513.53 21.51 ——————

BkW 1.071.111.171.221.271.331.381.451.511.57——————

Sheave/Mtr AAAACCCCCC——————

RPM 840 870 900 930 960 990 1015 1045 1070 1095 ——————

Turns Open 3.52.521.53.532.521.51 ——————

BkW 1.171.211.271.321.381.431.491.551.62———————

Sheave/Mtr A A A A C C C C C———————

RPM 860 885 915 945 975 1005 1030 1055 1085 ———————

Turns Open 32.51.513.53 21.51 ———————

BkW 1.231.291.351.411.481.531.601.661.72———————

Sheave/Mtr A A A C C C C C C ———————

RPM 875 900 930 960 990 1015 1045 1070 1095 ———————

Turns Open 2.521.53.532.521.51 ———————

0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375

EXTERNAL STATIC PRESSURE (Pa)

1. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/Standard Motor.

2. Unit factory shipped with standard static sheave and drive at 2.5 turns open. Other speed require field selection.

3. For applications requiring higher static pressures, contact your local representative. Performance data does not include drive losses and is based on sea level conditions.

4. All airflow is rated at lowest voltage if unit is dual voltage rated, i.e., 380V for 380/420V units.

5. Airflow in l/s with wet coil and clean filter.

FIELD SELECTABLE INPUTS

Jumpers and DIP (dual in-line package) switches on the control board are used to customize unit operation and can be configured in the field.

IMPORTANT: Jumpers and DIP switches should only be clipped when power to control board has been turned off.

Complete C Control Jumper Settings (See Fig. 12)

WATER COIL FREEZE PROTECTION (FP1) LIMIT SETTING — Select jumper 3, (JW3-FP1 Low Temp) to choose FP1 limit of –12.2 C or –1.1 C. To select –1.1 C as the limit, DO NOT clip the jumper. To select –12.2 C as the limit, clip the jumper.

AIR COIL FREEZE PROTECTION (FP2) LIMIT SETTING — Select jumper 2 (JW2-FP2 Low Temp) to choose FP2 limit of –12.2 C or –1.1 C. To select –1.1 C as the limit, DO NOT clip the jumper. To select –12.2 C as the limit, clip the jumper.

ALARM RELAY SETTING — Select jumper 1 (JW1-AL2 Dry) for connecting alarm relay terminal (AL2) to 24 vac (R) or to remain as a dry contact (no connection). To connect AL2 to R, do not clip the jumper. To set as dry contact, clip the jumper.

Complete C Control DIP Switches — The Com-

plete C Control has 1 DIP switch block with five switches. See Fig. 12.

PERFORMANCE MONITOR (PM) — DIP switch 1 will enable or disable this feature. To enable the PM, set the switch to ON. To disable the PM, set the switch to OFF.

STAGE 2 — DIP switch 2 will enable or disable compressor delay. Set DIP switch to OFF for stage 2 in which the compressor will have a 3-second delay before energizing.

NOTE: The alarm relay will not cycle during Test mode if switch is set to OFF, stage 2.

DIP SWITCH 3 — not used. DIP SWITCH 4 — not used. DIP SWITCH 5 — DIP switch 5 is used to initiate 1 or 3 tries

for the FP1 fault. If water freeze protection for the water coil then DIP switch 5 can be set to lockout on the FP1 fault after one try.

Deluxe D Control Jumper Settings (See Fig. 13)

Page 21

ALARM RELAY SETTING — Select jumper 4 (JW4-AL2 Dry) for connecting alarm relay terminal (AL2) to 24 vac (R) or to remain as a dry contact (no connection). To connect AL2 to R, do not clip the jumper. To set as dry contact, clip the jumper.

LOW PRESSURE SETTING — The Deluxe D Control can be configured for Low Pressure Setting (LP). Select jumper 1 (JW1-LP Norm Open) for choosing between low pressure input normally opened or closed. To configure for normally closed operation, do not clip the jumper. To configure for normally open operation, clip the jumper.

Deluxe D Control DIP Switches — The Deluxe D

Control has 2 DIP switch blocks. Each DIP switch block has 8 switches and is labeled either S1 or S2 on the circuit board. See Fig. 13.

DIP SWITCH BLOCK 1 (S1) — This set of switches offers the following options for Deluxe D Control configuration:

Performance Monitor (PM) able performance monitor. To enable the PM, set the switch to ON. To disable the PM, set the switch to OFF.

Compressor Relay Staging Operation or disable compressor relay staging operation. The compressor relay can be set to turn on with stage 1 or stage 2 call from the thermostat. This setting is used with dual stage units (units with 2 compressors and 2 Deluxe D controls) or in master/slave applications. In master/slave applications, each compressor and fan will stage according to its switch 2 setting. If switch is set to stage 2, the compressor will have a 3-second delay before energizing during stage 2 demand.

NOTE: If DIP switch is set for stage 2, the alarm relay will not cycle during Test mode.

Heating/Cooling Thermostat Type tion of thermostat type. Heat pump or heat/cool thermostats can be selected. Select OFF for heat/cool thermostats. When in heat/cool mode, Y1 is used for cooling stage 1, Y2 is used for cooling stage 2, W1 is used for heating stage 1 and O/W2 is used for heating stage 2. Select ON for heat pump applications. In heat pump mode, Y1 used is for compressor stage 1, Y2 is used for compressor stage 2, W1 is used for heating stage 3 or emergency heat, and O/W2 is used for RV (heating or cooling) depending upon switch 4 setting.

O/B Thermostat Type pump O/B thermostats. O is cooling output. B is heating output. Select ON for heat pumps with O output. Select OFF for heat pumps with B output.

Dehumidification Fan Mode of normal or dehumidification fan mode. Select OFF for dehumidification mode. The fan speed relay will remain OFF during cooling stage 2. Select ON for normal mode. The fan speed relay will turn on during cooling stage 2 in normal mode.

Switch 6

— Not used.

Boilerless Operation erless operation and works in conjunction with switch 8. In boilerless operation mode, only the compressor is used for heating when FP1 is above the boilerless changeover temperature set by switch 8 below. Select ON for normal operation or select OFF for boilerless operation.

Boilerless Changeover Temperature vides selection of boilerless changeover temperature set point. Select OFF for set point of 10.0 C or select ON for set point of 4.4 C.

If switch 8 is set for 10.0 C, then the compressor will be

used for heating as long as the FP1 is above 10.0 C. The

— Set switch 1 to enable or dis-

— Switch 2 will enable

— Switch 3 provides selec-

— Switch 4 provides selection for heat

— Switch 5 provides selection

— Switch 7 provides selection of boil-

— Switch 8 on S1 pro-

compressor will not be used for heating when the FP1 is below

10.0 C and the compressor will operate in emergency heat mode, staging on EH1 and EH2 to provide heat. If a thermal switch is being used instead of the FP1 thermistor, only the compressor will be used for heating mode when the FP1 terminals are closed. If the FP1 terminals are open, the compressor is not used and the control goes into emergency heat mode.

DIP SWITCH BLOCK 2 (S2) — This set of DIP switches is used to configure accessory relay options. See Fig. 13.

Switches 1 to 3

— These DIP switches provide selection of Accessory 1 relay options. See Table 8 for DIP switch combinations.

Switches 4 to 6

— These DIP switches provide selection of Accessory 2 relay options. See Table 9 for DIP switch combinations.

Auto Dehumidification Mode or High Fan Mode

— Switch 7 provides selection of auto dehumidification fan mode or high fan mode. In auto dehumidification fan mode the fan speed relay will remain off during cooling stage 2 if terminal H is active. In high fan mode, the fan enable and fan speed relays will turn on when terminal H is active. Set the switch to ON for auto dehumidification fan mode or to OFF for high fan mode.

Switch 8

— Not used.

Table 8 — DIP Switch Block S2 —

Accessory 1 Relay Options

ACCE SSORY 1

RELAY OPTIONS

Cycle with Fan On On On

Digital NSB Off On On

Water Valve — Slow Opening On Off On

OAD On On Off

LEGEND

NSB — Night Setback OAD — Outside Air Damper

NOTE: All other DIP switch combinations are invalid.

DIP SWITCH POSITION

123

Table 9 — DIP Switch Block S2 —

Accessory 2 Relay Options

ACCE SSORY 2

RELAY OPTIONS

Cycle with Fan On On On

Digital NSB Off On On

Water Valve — Slow Opening On Off On

OAD On On Off

LEGEND

NSB — Night Setback OAD — Outside Air Damper

NOTE: All other switch combinations are invalid.

DIP SWITCH POSITION

456

Deluxe D Control Accessory Relay Configurations —

ble for both Deluxe D controls only: CYCLE WITH FAN — In this configuration, the relay will be

ON any time the Fan Enable relay is on. CYCLE WITH COMPRESSOR — In this configuration, the

relay will be ON any time the Compressor relay is on. DIGITAL NIGHT SET BACK (NSB) — In this configura-

tion, the relay will be ON if the NSB input is connected to ground C.

NOTE: If there are no relays configured for digital NSB, then the NSB and override (OVR) inputs are automatically configured for mechanical operation.

The following accessory relay settings are applica-

Page 22

MECHANICAL NIGHT SET BACK — When NSB input is connected to ground C, all thermostat inputs are ignored. A thermostat set back heating call will then be connected to the OVR input. If OVR input becomes active, then the Deluxe D control will enter Night Low Limit (NLL) staged heating mode. The NLL staged heating mode will then provide heating during the NSB period.

WATER VALVE (SLOW OPENING) — If relay is configured for Water Valve (slow opening), the relay will start 60 seconds prior to starting compressor relay.

OUTSIDE AIR DAMPER (OAD) — If relay is configured for OAD, the relay will normally be ON any time the Fan Enable relay is energized. The relay will not start for 30 minutes following a return to normal mode from NSB, when NSB is no longer connected to ground C. After 30 minutes, the relay will start if the Fan Enable is set to ON.

START-UP

CAUTION

To avoid equipment damage, DO NOT leave system filled in a building without heat during the winter unless antifreeze is added to system water. Condenser coils never fully drain by themselves and will freeze unless winterized with antifreeze.

Use the procedure outlined below to initiate proper unit

start-up. NOTE: This equipment is designed for indoor installation only.

WARNING

When the disconnect switch is closed, high voltage is present in some areas of the electrical panel. Exercise caution when working with the energized equipment.

Operating Limits

ENVIRONMENT — This equipment is designed for indoor installation ONLY. Extreme variations in temperature, humidity and corrosive water or air will adversely affect the unit performance, reliability and service life.

POWER SUPPLY — A voltage variation of ± 10% of nameplate utilization voltage is acceptable.

UNIT STARTING CONDITIONS — All units can start and operate in an ambient of 7.2 C with entering-air at 10.0/7.2 C (db/wb), entering water at –1.1 C and with both air and water at the flow rates used. All other conditions are the same as shown in Table 10.

NOTE: These operating conditions are not normal or continuous operating conditions. It is assumed that such a start-up is for the purpose of bringing the building space up to occupancy temperature.

Air Coil Cleaning — To obtain maximum performance,

the air coil should be cleaned before start-up. A 10% solution of dishwasher detergent and water is recommended for both sides of the coil. A thorough water rinse should follow. Ultraviolet based anti-bacterial systems may damage e-coated air coils.

Start Up System

1. Restore power to system.

2. Turn thermostat fan position to ON. Blower should start.

3. Balance airflow at registers.

4. Adjust all valves to the full open position and turn on the line power to all heat pump units.

5. Operate unit in the cooling cycle. Room temperature should be approximately 7.2 to 43.3 C dry bulb. Loop

water temperature entering the heat pumps should be between 10.0 and 43.3 C.

NOTE: Three factors determine the operating limits of a unit: (1) entering-air temperature, (2) water temperature and (3) ambient temperature. Whenever any of these factors are at a minimum or maximum level, the other two factors must be at a normal level to ensure proper unit operation. See Table 10. Extreme variations in temperature and humidity and/ or corrosive water or air will adversely affect unit performance, reliability, and service life.

Table 10 — Operating Limits

AIR LIMITS COOLING (C) HEATING (C) Minimum Ambient Air db 74 Rated Ambient Air db 27 20 Maximum Ambient Air db 43 29 Minimum Entering Air db/wb 16/10 10 Rated Entering Air db/wb 27/19 20 Maximum Entering Air db/wb 35/24 27

WATER LIMITS Minimum Entering Water –1 –6.7 Normal Entering Water 10 to 43 –1 to 21 Maximum Entering Water 49 32 Normal Water Flow 1.6 to 3.2 L/m per kW

LEGEND

db — Dry Bulb wb — Wet Bulb

Scroll Compressor Rotation — It is important to be

certain compressor is rotating in the proper direction. To determine whether or not compressor is rotating in the proper direction:

1. Connect service gages 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.

If the suction pressure does not drop and the discharge

pressure does not rise to normal levels:

1. Turn off power to the unit. Install disconnect tag.

2. Reverse any two of the unit power leads.

3. Reapply power to the unit and verify pressures are correct.

The suction and discharge pressure levels should now move

to their normal start-up levels.

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

After a few minutes of reverse operation, the scroll compressor internal overload protection will open, thus activating the unit lockout. This requires a manual reset. To reset, turn the thermostat on and then off.

NOTE: There is a 5-minute time delay before the compressor will start.

Unit Start-Up in Cooling Mode

1. Adjust the unit thermostat to the warmest position. Slowly reduce the thermostat position until the compressor activates.

2. Check for cool air delivery at unit grille a few minutes after the unit has begun to operate.

3. Verify that the compressor is on and that the water flow rate is correct by measuring pressure drop through the heat exchanger using pressure/temperature plugs. Check the elevation and cleanliness of the condensate lines; any dripping could be a sign of a blocked line. Be sure the condensate trap includes a water seal.

Page 23

4. Check the temperature of both supply and discharge water.

5. Air temperature drop across the coil should be checked when compressor is operating. Air temperature drop should be between –9.4 and –3.9 C.

Unit Start-Up in Heating Mode

NOTE: Operate the unit in heating cycle after checking the cooling cycle. Allow 5 minutes between tests for the pressure or reversing valve to equalize.

1. Turn thermostat to lowest setting and set thermostat switch to HEAT position.

2. Slowly turn the thermostat to a higher temperature until the compressor activates.

3. Check for warm air delivery at the unit grille within a few minutes after the unit has begun to operate.

4. Check the temperature of both supply and discharge water.

5. Air temperature rise across the coil should be checked when compressor is operating. Air temperature rise should be between –6.7 and –1.1 C after 15 minutes at load.

6. Check for vibration, noise and water leaks.

Flow Regulation — Flow regulation can be accom-

plished by two methods. Most water control valves have a flow adjustment built into the valve. By measuring the pressure drop through the unit heat exchanger, the flow rate can be determined using Table 11. Adjust the water control valve until the flow of 0.09 to 0.13 L/s is achieved. Since the pressure constantly varies, two pressure gages may be needed in some applications.

An alternative method is to install a flow control device. These devices are typically an orifice of plastic material designed to allow a specified flow rate that are mounted on the outlet of the water control valve. Occasionally these valves produce a velocity noise that can be reduced by applying some back pressure. To accomplish this, slightly close the leaving isolation valve of the well water setup.

WARNING

Table 11 — Coaxial Water Pressure Drop

50HQP

UNIT SIZE

072

096

120

L/s

0.6 8.3 6.2 3.4 2.1

0.9 22.8 19.1 14.5 12.4

1.3 42.7 36.5 29.0 26.2

0.8 45.4 14.5 11.7 9.0

1.1 68.1 36.5 31.0 24.8

1.5 90.9 64.1 54.5 45.5

0.9 56.8 27.6 22.1 15.2

1.4 85.2 59.3 49.6 37.9

1.9 113.6 100.0 83.4 67.6

PRESSURE DROP (kPa)

–1 C 10 C 21 C 32 C

Flushing — Once the piping is complete, final purging and

loop charging is needed. A flush cart pump of at least 1.5 hp is needed to achieve adequate flow velocity in the loop to purge air and dirt particles from the loop. Flush the loop in both directions with a high volume of water at a high velocity. Cleaning and flushing the piping system is the single most important step

to ensure proper start-up and continued efficient operation of the system. Follow the steps below to properly flush the loop:

1. Verify power is off.

2. Install the system with the supply hose connected directly to the return riser valve. Use a single length of flexible hose.

3. Open all air vents. Fill the system with water. DO NOT allow system to overflow. Bleed all air from the system. Pressurize and check the system for leaks and repair as appropriate.

4. Verify that all strainers are in place. Carrier recommends a strainer with a no. 20 stainless steel wire mesh. Start the pumps, and systematically check each vent to ensure that all air is bled from the system.

5. Verify that make-up water is available. Adjust makeup water as required to replace the air which was bled from the system. Check and adjust the water/air level in the expansion tank.

6. Set the boiler to raise the loop temperature to approximately 30 C. Open a drain at the lowest point in the system. Adjust the make-up water replacement rate to equal the rate of bleed.

7. Refill the system and add trisodium phosphate in a proportion of approximately 0.5 kg per 750 L of water (or other equivalent approved cleaning agent). Reset the boiler to raise the loop temperature to 38 C. Circulate the solution for a minimum of 8 to 24 hours. At the end of this period, shut off the circulating pump and drain the solution. Repeat system cleaning if desired.

8. When the cleaning process is complete, remove the shortcircuited hoses. Reconnect the hoses to the proper supply, and return the connections to each of the units. Refill the system and bleed off all air.

9. Test the system pH with litmus paper. The system water should be in the range of pH 6.0 to 8.5 (see Table 2). Add chemicals, as appropriate to maintain neutral pH levels.

10. When the system is successfully cleaned, flushed, refilled and bled, check the main system panels, safety cutouts and alarms. Set the controls to properly maintain loop temperatures.

DO NOT use “Stop Leak” or similar chemical agent in this system. Addition of chemicals of this type to the loop water will foul the heat exchanger and inhibit unit operation.

11. Restore power.

Antifreeze may be added before, during or after the flushing process. However, depending on when it is added in the process, it can be wasted. Refer to the Antifreeze section for more detail.

Loop static pressure will fluctuate with the seasons. Pressures will be higher in the winter months than during the warmer months. This fluctuation is normal and should be considered when charging the system initially. Run the unit in either heating or cooling for several minutes to condition the loop to a homogenous temperature.

When complete, perform a final flush and pressurize the loop to a static pressure of 275 to 345 kPa for winter months or 100 to 140 kPa for summer months.

After pressurization, be sure to remove the plug from the end of the loop pump motor(s) to allow trapped air to be discharged and to ensure the motor housing has been flooded. Be sure the loop flow center provides adequate flow through the unit by checking pressure drop across the heat exchanger.

NOTE: Carrier strongly recommends all piping connections, both internal and external to the unit, be pressure tested by an appropriate method prior to any finishing of the interior space

Page 24

or before access to all connections is limited. Test pressure may not exceed the maximum allowable pressure for the unit and all components within the water system. Carrier will not be responsible or liable for damages from water leaks due to inadequate or lack of a pressurized leak test, or damages caused by exceeding the maximum pressure rating during installation.

Antifreeze — In areas where entering loop temperatures

drop below 4.4 C or where piping will be routed through areas subject to freezing, antifreeze is needed.

Alcohols and glycols are commonly used as antifreeze agents. Freeze protection should be maintained to 8.3° C below the lowest expected entering loop temperature. For example, if the lowest expected entering loop temperature is –1.1 C, the leaving loop temperature would be –5.6 to –3.9 C. Therefore, the freeze protection should be at –9.4 C (–1.1 C – 8.3 C = –9.4 C).

IMPORTANT: All alcohols should be pre-mixed and pumped from a reservoir outside of the building or introduced under water level to prevent alcohols from fuming.

Calculate the total volume of fluid in the piping system. See Table 12. Use the percentage by volume in Table 13 to determine the amount of antifreeze to use. Antifreeze concentration should be checked from a well mixed sample using a hydrometer to measure specific gravity.

FREEZE PROTECTION SELECTION — The –1.1 C FP1 factory setting (water) should be used to avoid freeze damage to the unit.

Once antifreeze is selected, the JW3 jumper (FP1) should be clipped on the control to select the low temperature (antifreeze –12.2 C) set point to avoid nuisance faults.

Cooling Tower/Boiler Systems — These systems

typically use a common loop maintained at 15.6 C to 32.2 C. The use of a closed circuit evaporative cooling tower with a secondary heat exchanger between the tower and the water loop is recommended. If an open type cooling tower is used continuously, chemical treatment and filtering will be necessary.

Table 12 — Approximate Fluid Volume (L)

per 30 M of Pipe

PIPE DIAMETER (in.) [mm] VOLUME (gal.) [L]

Copper 1 [25.4] 4.1 [15.5]

Rubber Hose 1 [25.4] 3.9 [14.8] Polyethylene

LEGEND

IPS — Internal Pipe Size SCH — Schedule SDR — Standard Dimensional Ratio

NOTE: Volume of heat exchanger is approximately 3.78 liters.

Table 13 — Antifreeze Percentages by Volume

ANTIFREEZE

Methanol (%) 25 21 16 10 100% USP Food Grade

Propylene Glycol (%) Ethanol (%) 29 25 20 14

1.25 [31.8] 6.4 [24.2]

1.5 [38.1] 9.2 [34.8]

/4 IPS SDR11 2.8 [10.6]

1 IPS SDR11 4.5 [17.0]

/4 IPS SDR11 8.0 [30.8]

/2 IPS SDR11 10.9 [41.3]

2 IPS SDR11 18.0 [68.1]

/4 IPS SCH40 8.3 [31.4]

/2 IPS SCH40 10.9 [41.3]

1 2 IPS SCH40 17.0 [64.4]

MINIMUM TEMPERATURE FOR FREEZE

–12.2 –9.4 –6.7 –3.9

PROTECTION (C)

38 30 22 15

Ground Coupled, Closed Loop and Plateframe Heat Exchanger Well Systems —

allow water temperatures from –1.1 to 43.3 C. The external loop field is divided up into 51 mm polyethylene supply and return lines. Each line has valves connected in such a way that upon system start-up, each line can be isolated for flushing using only the system pumps. Air separation should be located in the piping system prior to the fluid re-entering the loop field.

These systems

OPERATION

Power Up Mode —

the inputs, terminals and safety controls are checked for normal operation.

NOTE: The compressor will have a 5-minute anti-short cycle upon power up.

The unit will not operate until all

Units with Aquazone™ Complete C Control

STANDBY — Y and W terminals are not active in Standby mode, however the O and G terminals may be active, depending on the application. The compressor will be off.

COOLING — Y and O terminals are active in Cooling mode. After power up, the first call to the compressor will initiate a 5 to 80 second random start delay and a 5-minute anti-short cycle protection time delay. After both delays are complete, the compressor is energized.

NOTE: On all subsequent compressor calls the random start delay is omitted.

HEATING STAGE 1 — Terminal Y is active in heating stage 1. After power up, the first call to the compressor will initiate a 5 to 80 second random start delay and a 5-minute anti-short cycle protection time delay. After both delays are complete, the compressor is energized.

NOTE: On all subsequent compressor calls the random start delay is omitted.

HEATING STAGE 2 — To enter Stage 2 mode, terminal W is active (Y is already active). Also, the G terminal must be active or the W terminal is disregarded. The compressor relay will remain on and EH1 is immediately turned on. EH2 will turn on after 10 minutes of continual stage 2 demand.

NOTE: EH2 will not turn on (or if on, will turn off) if FP1 temperature is greater than 7.2 C and FP2 is greater than

43.3 C. EMERGENCY HEAT — In emergency heat mode, termi-

nal W is active while terminal Y is not. Terminal G must be active or the W terminal is disregarded. EH1 is immediately turned on. EH2 will turn on after 5 minutes of continual emergency heat demand.

Units with Aquazone Deluxe D Control

STANDBY/FAN ONLY — The compressor will be off. The Fan Enable, Fan Speed, and reversing valve (RV) relays will be on if inputs are present. If there is a Fan 1 demand, the Fan Enable will immediately turn on. If there is a Fan 2 demand, the Fan Enable and Fan Speed will immediately turn on.

NOTE: DIP switch 5 on S1 does not have an effect upon Fan 1 and Fan 2 outputs.

HEATING STAGE 1 — In Heating Stage 1 mode, the Fan Enable and Compressor relays are turned on immediately. Once the demand is removed, the relays are turned off and the control reverts to Standby mode. If there is a master/ slave or dual compressor application, all compressor relays and related functions will operate per their associated DIP switch 2 setting on S1.

HEATING STAGE 2 — In Heating Stage 2 mode, the Fan Enable and Compressor relays are remain on. The Fan Speed relay is turned on immediately and turned off

Page 25

immediately once the demand is removed. The control reverts to Heating Stage 1 mode. If there is a master/slave or dual compressor application, all compressor relays and related functions will operate per their associated DIP switch 2 setting on S1.

HEATING STAGE 3 — In Heating Stage 3 mode, the Fan Enable, Fan Speed and Compressor relays remain on. The EH1 output is turned on immediately. With continuing Heat Stage 3 demand, EH2 will turn on after 10 minutes. EH1 and EH2 are turned off immediately when the Heating Stage 3 demand is removed. The control reverts to Heating Stage 2 mode.

Output EH2 will be off if FP1 is greater than 7.2 C AND FP2 (when shorted) is greater than 43.3 C during Heating Stage 3 mode. This condition will have a 30-second recognition time. Also, during Heating Stage 3 mode, EH1, EH2, Fan Enable, and Fan Speed will be ON if G input is not active.

EMERGENCY HEAT — In Emergency Heat mode, the Fan Enable and Fan Speed relays are turned on. The EH1 output is turned on immediately. With continuing Emergency Heat demand, EH2 will turn on after 5 minutes. Fan Enable and Fan Speed relays are turned off after a 60-second delay. The control reverts to Standby mode.

Output EH1, EH2, Fan Enable, and Fan Speed will be ON if the G input is not active during Emergency Heat mode.

COOLING STAGE 1 — In Cooling Stage 1 mode, the Fan Enable, compressor and RV relays are turned on immediately. If configured as stage 2 (DIP switch set to OFF) then the compressor and fan will not turn on until there is a stage 2 demand. The Fan Enable and compressor relays are turned off immediately when the Cooling Stage 1 demand is removed. The control reverts to Standby mode. The RV relay remains on until there is a heating demand. If there is a master/slave or dual compressor application, all compressor relays and related functions will track with their associated DIP switch 2 on S1.

COOLING STAGE 2 — In Cooling Stage 2 mode, the Fan Enable, compressor and RV relays remain on. The Fan Speed relay is turned on immediately and turned off once the Cooling Stage 2 demand is removed. The control reverts to Cooling Stage 1 mode. If there is a master/slave or dual compressor application, all compressor relays and related functions will track with their associated DIP switch 2 on S1.

NIGHT LOW LIMIT (NLL) STAGED HEATING — In NLL staged Heating mode, the override (OVR) input becomes active and is recognized as a call for heating and the control will immediately go into a Heating Stage 1 mode. With an additional 30 minutes of NLL demand, the control will go into Heating Stage 2 mode. With another additional 30 minutes of NLL demand, the control will go into Heating Stage 3 mode.

SYSTEM TEST

System testing provides the ability to check the control operation. The control enters a 20-minute Test mode by momentarily shorting the test pins. All time delays are increased 15 times.

Test Mode — To enter Test mode on Complete C or De-

luxe D controls, cycle the fan 3 times within 60 seconds. The LED (light-emitting diode) will flash a code representing the last fault when entering the Test mode. The alarm relay will

also power on and off during Test mode. See Tables 14-16. To exit Test mode, short the terminals for 3 seconds or cycle the power 3 times within 60 seconds.

NOTE: The Deluxe D control has a flashing code and alarm relay cycling code that will both have the same numerical label. For example, flashing code 1 will have an alarm relay cycling code 1. Code 1 indicates the control has not faulted since the last power off to power on sequence.

Retry Mode — In Retry mode, the status LED will start to

flash slowly to signal that the control is trying to recover from an input fault. The control will stage off the outputs and try to again satisfy the thermostat used to terminal Y. Once the thermostat input calls are satisfied, the control will continue normal operation.

NOTE: If 3 consecutive faults occur without satisfying the thermostat input call to terminal Y, the control will go into lockout mode. The last fault causing the lockout is stored in memory and can be viewed by entering Test mode.

Aquazone™ Deluxe D Control LED Indicators —

STATUS LED — Status LED indicates the current status or mode of the Deluxe D control. The Status LED light is green.

TEST LED — Test LED will be activated any time the Deluxe D control is in Test mode. The Test LED light is yellow.

FAULT LED — Fault LED light is red. The fault LED will always flash a code representing the last fault in memory. If there is no fault in memory, the fault LED will flash code 1 on the and appear as 1 fast flash alternating with a 10-second pause. See Table 16.

Flashing Code 1 Test Mode — No fault in memory Cycling Code 1 Flashing Code 2 Test Mode — HP Fault in memory Cycling Code 2 Flashing Code 3 Test Mode — LP Fault in memory Cycling Code 3 Flashing Code 4 Test Mode — FP1 Fault in memory Cycling Code 4 Flashing Code 5 Test Mode — FP2 Fault in memory Cycling Code 5 Flashing Code 6 Test Mode — CO Fault in memory Cycling Code 6

Flashing Code 7

Flashing Code 8 Test Mode — PM in memory Cycling Code 8

Flashing Code 9

CO — Condensate Overflow FP — Freeze Protection HP — High Pressure LED — Light-Emitting Diode LP — Low Pressure PM — Performance Monitor

NOTES:

1. Slow flash is 1 flash every 2 seconds.

2. Fast flash is 2 flashes every 1 second.

3. EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed

There are 3 LED indicators on the Deluxe D control:

Table 14 — Complete C Control Current LED

Status and Alarm Relay Operations

LED STATUS DESCRIPTION OF OPERATION ALARM RELAY

Normal Mode Open

Off

Slow Flash

Fast Flash Lockout Closed

LEGEND

by a 10-second pause. This sequence will repeat continually until the fault is cleared.

Normal Mode with

PM Warning

Complete C Control is

non-functional

Fault Retry Open

Over/Under Voltage Shutdown

Test Mode — Over/Under

shutdown in memory

Test Mode — FP1/FP2

Swapped fault in memory

Cycle (closed 5 sec., Open 25 sec.)

Open

(Closed after

15 minutes)

Cycling Code 7

Cycling Code 9

Page 26

Table 15 — Complete C Control LED Code and

Fault Descriptions

LED

CODE

1 No fault in memory There has been no fault since the last power-down to power-up sequence 2 High-Pressure Switch HP open instantly 3 Low-Pressure Switch LP open for 30 continuous seconds before or during a call (bypassed for first 60 seconds) 4 Freeze Protection Coax — FP1 FP1 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation) 5 Freeze Protection Air Coil — FP2 FP2 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation) 6 Condensate overflow Sense overflow (grounded) for 30 continuous seconds 7

(Autoreset)

FP — Freeze Protection HP — High Pressure LED — Light-Emitting Diode LP — Low Pressure PM — Performance Monitor

Over/Under Voltage Shutdown "R" power supply is <19VAC or >30VAC

8 PM Warning Performance Monitor Warning has occurred. 9 FP1 and FP2 Thermistors are swapped FP1 temperature is higher than FP2 in heating/test mode, or FP2 temperature is higher than FP1 in cooling/

LEGEND

FAULT DESCRIPTION

test mode.

Table 16 — Aquazone™ Deluxe D Control Current LED Status and Alarm Relay Operations

DESCRIPTION

Normal Mode On Off Flash Last Fault Code in Memory Open

Normal Mode with PM On Off Flashing Code 8

Deluxe D Control is

non-functional

Test Mode — On Flash Last Fault Code in Memory Cycling Appropriate Code

Night Setback Flashing Code 2 — Flash Last Fault Code in Memory —

ESD Flashing Code 3 — Flash Last Fault Code in Memory — Invalid T-stat Inputs Flashing Code 4 — Flash Last Fault Code in Memory — No Fault in Memory On Off Flashing Code 1 Open

HP Fault Slow Flash Off Flashing Code 2 Open

LP Fault Slow Flash Off Flashing Code 3 Open FP1 Fault Slow Flash Off Flashing Code 4 Open FP2 Fault Slow Flash Off Flashing Code 5 Open

CO Fault Slow Flash Off Flashing Code 6 Open

Over/Under Voltage Slow Flash Off Flashing Code 7 Open (closed after 15 minutes)

HP Lockout Fast Flash Off Flashing Code 2 Closed

LP Lockout Fast Flash Off Flashing Code 3 Closed FP1 Lockout Fast Flash Off Flashing Code 4 Closed FP2 Lockout Fast Flash Off Flashing Code 5 Closed CO Lockout Fast Flash Off Flashing Code 6 Closed

LEGEND NOTES:

CO — Condensate Overflow ESD — Emergency Shutdown FP — Freeze Protection HP — High Pressure LP — Low Pressure PM — Performance Monitor

STATUS LED

(Green)

Off Off Off Open

TEST LED

(Yellow)

FAULT LED (Red) ALARM RELAY

Cycle (closed 5 sec,

open 25 sec, …)

1. If there is no fault in memory, the Fault LED will flash code 1.

2. Codes will be displayed with a 10-second Fault LED pause.

3. Slow flash is 1 flash every 2 seconds.

4. Fast flash is 2 flashes every 1 second.

5. EXAMPLE: “Flashing Code 2” is represented by 2 fast flashes followed by a 10-second pause. This sequence will repeat continually until the fault is cleared.

SERVICE

Perform the procedures outlined below periodically, as

indicated.

IMPORTANT: When a compressor is removed from this unit, system refrigerant circuit oil will remain in the compressor. To avoid leakage of compressor oil, the refrigerant lines of the compressor must be sealed after it is removed.

IMPORTANT: All refrigerant discharged from this unit must be recovered without exception. Technicians must follow industry accepted guidelines and all local, state and federal statutes for the recovery and disposal of refrigerants.

IMPORTANT: To avoid the release of refrigerant into the atmosphere, the refrigerant circuit of this unit must only be serviced by technicians which meet local, state and federal proficiency requirements.

IMPORTANT: To prevent injury or death due to electrical shock or contact with moving parts, open unit disconnect switch before servicing unit.

Page 27

Filters — Filters must be clean for maximum performance.

Fig. 22 — Gravity Flow Method

a50-8586

Inspect filters every month under normal operating conditions. replace when necessary.

IMPORTANT: Units should never be operated without a filter.

Washable, high efficiency, electrostatic filters, when dirty, can exhibit a very high pressure drop for the fan motor and reduce air flow, resulting in poor performance. It is especially important to provide consistent washing of these filters (in the opposite direction of the normal air flow) once per month using a high pressure wash.

Water Coil — Keep all air out of the water coil. Check

open loop systems to be sure the well head is not allowing air to infiltrate the water line. Always keep lines airtight.

DIRECT GROUND WATER APPLICATIONS — If the system is installed in an area with a known high mineral content (125 ppm or greater) in the water, it is best to establish a periodic maintenance schedule with the owner so the coil can be checked regularly.

Should periodic coil cleaning be necessary, use standard coil cleaning procedures, which are compatible with the heat exchanger material and copper water lines. Generally, the more water flowing through the unit, the less chance for scaling. Therefore, 1.6 L/m per kW is recommended as a minimum flow. Minimum flow rate for entering water temperatures below 10.0 C is 2.2 L/m per kW.

ALL OTHER WATER LOOP APPLICATIONS — Generally, water coil maintenance is not needed for closed loop systems. However, if the piping is known to have high dirt or debris content, it is best to establish a periodic maintenance schedule with the owner so the water coil can be checked regularly. Dirty installations are typically the result of deterioration of iron or galvanized piping or components in the system. Open cooling towers requiring heavy chemical treatment and mineral buildup through water use can also contribute to higher maintenance. Should periodic coil cleaning be necessary, use standard coil cleaning procedures, which are compatible with both the heat exchanger material and copper water lines. Generally, the more water flowing through the unit, the less chance for scaling. However, flow rates over 3.9 L/m per kW can produce water (or debris) velocities that can erode the heat exchanger wall and ultimately produce leaks.

IMPORTANT: To avoid fouled machinery and extensive unit clean-up, DO NOT operate units without filters in place. DO NOT use equipment as a temporary heat source during construction.

Condensate Drain Pans — Check condensate drain

pans for algae growth twice a year. If algae growth is apparent, consult a water treatment specialist for proper chemical treatment. The application of an algaecide every three months will typically eliminate algae problems in most locations.

Refrigerant System — Verify air and water flow rates

are at proper levels before servicing. To maintain sealed circuitry integrity, do not install service gages unless unit operation appears abnormal.

Condensate Drain Cleaning — Clean the drain line

and unit drain pan at the start of each cooling season. Check flow by pouring water into drain. Be sure trap is filled to maintain an air seal.

Air Coil Cleaning — Remove dirt and debris from evap-

orator coil as required by condition of the coil. Clean coil with a stiff brush, vacuum cleaner, or compressed air. Use a fin

comb of the correct tooth spacing when straightening mashed or bent coil fins.

Condenser Cleaning — Water-cooled condensers may

require cleaning of scale (water deposits) due to improperly maintained closed-loop water systems. Sludge build-up may need to be cleaned in an open water tower system due to induced contaminants.

Local water conditions may cause excessive fouling or pitting of tubes. Condenser tubes should therefore be cleaned at least once a year, or more often if the water is contaminated.

Proper water treatment can minimize tube fouling and pitting. If such conditions are anticipated, water treatment analysis is recommended. Refer to the Carrier System Design Manual, Part 5, for general water conditioning information.

CAUTION

Follow all safety codes. Wear safety glasses and rubber gloves when using inhibited hydrochloric acid solution. Observe and follow acid manufacturer’s instructions. Failure to follow these safety precautions could result in personal injury or equipment or property damage.

Clean condensers with an inhibited hydrochloric acid solution. The acid can stain hands and clothing, damage concrete, and, without inhibitor, damage steel. Cover surroundings to guard against splashing. Vapors from vent pipe are not harmful, but take care to prevent liquid from being carried over by the gases.

Warm solution acts faster, but cold solution is just as effective if applied for a longer period.

GRAVITY FLOW METHOD — Do not add solution faster than vent can exhaust the generated gases.

When condenser is full, allow solution to remain overnight, then drain condenser and flush with clean water. Follow acid manufacturer’s instructions. See Fig. 22.

FORCED CIRCULATION METHOD — Fully open vent pipe when filling condenser. The vent may be closed when condenser is full and pump is operating. See Fig. 23.

Regulate flow to condenser with a supply line valve. If pump is a nonoverloading type, the valve may be fully closed while pump is running.

FILL CONDENSER WITH CLEANING SOLUTION. DO NOT ADD SOLUTION MORE RAPIDLY THAN VENT CAN EXHAUST GASES CAUSED BY CHEMICAL ACTION.

VENT PIPE

1.0 TO 1.2 m

PAI L

1-IN. (25 mm) PIPE

1.5 m APPROX

FUNNEL

PAI L

CONDENSER

Page 28

Refrigerant Charging

Fig. 23 — Forced Circulation Method

SUCTION

PUMP SUPPORT

TANK

FINE MESH SCREEN

RETURN

GAS VENT

PUMP

PRIMING CONN.

GLOBE VALV ES

SUPPLY

1-IN. (25 mm) PIPE

CONDENSER

REMOVE WATER REGULATING VALVE

WARNING

To prevent personal injury, wear safety glasses and gloves when handling refrigerant. Do not overcharge system — this can cause compressor flooding.

NOTE: Do not vent or depressurize unit refrigerant to atmosphere. Remove and recover refrigerant following accepted practices.

Air Coil Fan Motor Removal

CAUTION

Before attempting to remove fan motors or motor mounts, place a piece of plywood over evaporator coils to prevent coil damage.

For average scale deposit, allow solution to remain in condenser overnight. For heavy scale deposit, allow 24 hours. Drain condenser and flush with clean water. Follow acid manufacturer’s instructions.

Compressor — Conduct annual amperage checks to in-

sure that amp draw is no more than 10% greater than indicated on the serial plate data.

Fan Motors — All units have lubricated fan motors. Fan

motors should never be lubricated unless obvious, dry operation is suspected. Periodic maintenance oiling is not recommended, as it will result in dirt accumulating in the excess oil and cause eventual motor failure. Conduct annual dry operation check and amperage check to ensure amp draw is no more than 10% greater than indicated on serial plate data.

Belt — Check that the belt is tight. Retighten if needed. Re-

place if it is split or cracked.

Air Coil — The air coil must be cleaned to obtain maximum

performance. Check once a year under normal operating conditions and, if dirty, brush or vacuum clean. Care must be taken not to damage the aluminum fins while cleaning.

Checking System Charge — Units are shipped with

full operating charge. If recharging is necessary:

1. Insert thermometer bulb in insulating rubber sleeve on liquid line near filter drier. Use a digital thermometer for all temperature measurements. DO NOT use a mercury or dial-type thermometer.

2. Connect pressure gage to discharge line near compressor.

3. After unit conditions have stabilized, read head pressure on discharge line gage.

NOTE: Operate unit a minimum of 15 minutes before checking charge.

4. From standard field-supplied Pressure-Temperature chart for R-410A, find equivalent saturated condensing temperature.

5. Read liquid line temperature on thermometer; then subtract from saturated condensing temperature. The difference equals subcooling temperature.

Motor power wires need to be disconnected from motor

terminals before motor is removed from unit.

1. Shut off unit main power supply.

2. Loosen bolts on mounting bracket so that fan belt can be removed.

3. Loosen and remove the 2 motor mounting bracket bolts on left side of bracket.

4. Slide motor/bracket assembly to extreme right and lift out through space between fan scroll and side frame. Rest motor on a high platform such as a step ladder. Do not allow motor to hang by its power wires.

Blower Fan Sheaves — Factory-supplied drives are

pre-aligned and tensioned, however, it is recommended that the belt tension and alignment be checked before starting the unit. Always check the drive alignment after adjusting belt tension. Sheave and belt information is shown in Table 17.

Each factory-assembled fan, shaft, and drive sheave assembly is precision aligned and balanced. If excessive unit vibration occurs after field replacement of sheaves, the unit should be rebalanced. To change the drive ratio, follow the steps in the Blower Fan Performance Adjustment section.

After 1 to 3 minutes of operation, check the belt tension. Also check tension frequently during the first 24 hours of operation and adjust if necessary. Periodically check belt tension throughout the run-in period, which is normally the initial 72 hours of operation.

ALIGNMENT — Make sure that fan shafts and motor shafts are parallel and level. The most common causes of misalignment are nonparallel shafts and improperly located sheaves. Where shafts are not parallel, belts on one side are drawn tighter and pull more than their share of the load. As a result, these belts wear out faster, requiring the entire set to be replaced before it has given maximum service. If misalignment is in the sheave, belts enter and leave the grooves at an angle, causing excessive belt and sheave wear.

Shaft Alignment distance between the shafts at 3 or more locations. If the distances are equal, then the shafts are parallel.

Sheave Alignment

1. To check the location of the fixed sheaves on the shafts, use a straightedge or a piece of string. If the sheaves are properly aligned, the string will touch them at the points indicated by the arrows in Fig. 24. Rotate each sheave a half revolution to determine whether the sheave is wobbly or the drive shaft is bent. Correct any misalignment.

2. With sheaves aligned, tighten cap screws evenly and progressively.

— Check shaft alignment by measuring the

Page 29

NOTE: There should be a 3 to 6 mm gap between the

Fig. 24 — Sheave Alignment

a50-7135tf

BELT SPAN

LB FORCE

DEFLECTION

Fig. 25 — Fan Belt Tension

a50-7136ef

mating part hub and the bushing flange. If the gap is closed, the bushing is probably the wrong size.

3. With taper-lock bushed hubs, be sure the bushing bolts are tightened evenly to prevent side-to-side pulley wobble. Check by rotating sheaves and rechecking sheave alignment. When substituting field-supplied sheaves for factory-supplied sheaves, only the motor sheave should be changed.

Blower Fan Performance Adjustment — The

unit is supplied with variable sheave drive on the fan motor to adjust for differing airflows at various ESP conditions. Select an airflow requirement on the left side of the table, then move horizontally to right under the required ESP for the sheave turns open, rpm and horsepower for that condition. Fully closed, the sheave will produce the highest static capability (higher rpm).

To change fan speeds from factory settings:

1. Shut off unit power supply.

2. Remove belt from motor sheave.

3. Lift motor assembly.

4. Loosen the

/16-in. hex nuts on the grommet motor adjustment bolts (2 per bolt). To increase the belt tension loosen the top hex nut. To decrease the belt tension loosen the bottom hex nut.

5. Turn the bolts by hand to the desired position then tighten

the

/16-in. hex nuts ( 2 per bolt).

6. Lower the motor assembly.

7. Install the belt.

8. Tension the belt per section below.

9. Restore power to the unit.

BELT TENSION ADJUSTMENT — Using a gage, apply 4 lb of force to the center of the belt and adjust the tension until a deflection of

/64-in. is achieved for every inch of shaft center

distance. See Fig. 25.

Ideal belt tension is the lowest value under which belt slip

will not occur at peak load conditions.

UNIT SIZE

50HQP

BLOWER SHEAVE BK67 X 1 BK85 X 1 BK67 X 1

072

096

120

*Airflow configurations J, K, N, and P. †Airflow configurations Q, T, U, and V. **Airflow configurations W, X, Z, and 1.

MOTOR SHEAVE 1VP34 X 7/8 1VP34 X 7/8 1VP44 X 7/8

BLOWER SHEAVE BK67 X 1 BK77 X 1 BK62 X 1

MOTOR SHEAVE 1VP40 X 7/8 1VP34 X 7/8 1VP44 X 7/8

BLOWER SHEAVE BK67 X 1 BK67 X 1 BK67 X 1

MOTOR SHEAVE 1VP44 X 7/8 1VP34 X 7/8 1VP50 X 7/8

Table 17 — Blower Sheave and Belt Specifications

COMPONENT

MOTOR HP 1 1 1

BELT B X 46 B X 50 B X 48

MOTOR HP 2 2 2

BELT B X 46 B X 48 B X 46

MOTOR HP 3 3 3

BELT B X 48 B X 46 B X 48

A* B† C**

DRIVE PACKAGE

Page 30

TROUBLESHOOTING

Fig. 26 — Thermistor Nominal Resistance

a50-8163

LEGEND

Fig. 27 — FP1 and FP2 Thermistor Location

COAX — Coaxial Heat Exchanger

Airflow Refrigerant Liquid Line Flow

SUCTIO N

COMPRESSOR

DISCHARGE

COAX

EXP ANSION

VA LV E

FP 2

FP 1

LIQUI D LIN E

WA TER IN

WA TER OUT

CONDENSA TE

OVERFLO W

(CO)

AIR COI L FREEZ E PROTECTIO N

WA TE R COI L PROTECTIO N

THERMIST OR

( °C)

AI R

COI L

AIRFLOW

AIRFLO W

When troubleshooting problems with a WSHP, see

Table 18.

Thermistor — A thermistor may be required for single-

phase units where starting the unit is a problem due to low voltage. See Fig. 26 for thermistor nominal resistance.

Control Sensors — The control system employs 2 nom-

inal 10,000 ohm thermistors (FP1 and FP2) that are used for freeze protection. Be sure FP1 is located in the discharge fluid and FP2 is located in the air discharge. See Fig. 27.

90.0

80.0

70.0

60.0

50.0

40.0

30.0

Resistance (kOhm)

20.0

10.0

0.0

-17.7 -6.6 4.4 15.6 26.7 37.8 48.9 60.0

Temperature (C)

Page 31

Table 18 — Troubleshooting

FAULT HEATING COOLING POSSIBLE CAUSE SOLUTION

Main Power Problems X X Green Status LED Off Check line voltage circuit breaker and disconnect.

Check for line voltage between L1 and L2 on the contactor. Check for 24-vac between R and C on controller. Check primary/secondary voltage on transformer.

HP Fault — Code 2 High Pressure

X Reduced or no airflow in

X Air temperature out of range

X X Overcharged with refrigerant Check superheat/subcooling vs. typical operating condition. X X Bad HP switch Check switch continuity and operation. Replace.

LP Fault — Code 3 Low Pressure/Loss of Charge

FP1 Fault — Code 4 Water Freeze Protection

FP2 Fault — Code 5 Air Coil Freeze Protection

Condensate Fault — Code 6

Over/Under Voltage — Code 7 (Auto Resetting)

Performance Monitor — Code 8

No Fault Code Shown X X Compressor overload Check and replace if necessary.

Unit Short Cycles X X Dirty air filter Check and clean air filter.

Only Fan Runs X X Thermostat position Ensure thermostat set for heating or cooling operation.

LEGEND

FP — Freeze Protection HP — High Pressure LED — Light-Emitting Diode LP — Low Pressure RV — Reversing Valve

X X Insufficient charge Check for refrigerant leaks. X Compressor pump down at

X Reduced or no water flow in

X Inadequate antifreeze level Check antifreeze density with hydrometer. X Improper freeze protect set-

X Water temperature out of

X X Bad thermistor Check temperature and impedance correlation.

X X Bad thermistor Check temperature and impedance correlation. X X Blocked drain Check for blockage and clean drain. X X Improper trap Check trap dimensions and location ahead of vent.

X X Under voltage Check power supply and 24-vac voltage before and during operation.

X X Over voltage Check power supply voltage and 24 vac before and during operation.

X Heating mode FP2>

X X Control board Reset power and check operation.

X X Unit in Test mode Reset power or wait 20 minutes for auto exit. X X Unit selection Unit may be oversized for space. Check sizing for actual load of space. X X Compressor overload Check and replace if necessary.

X X Unit locked out Check for lockout codes. Reset power. X X Compressor overload Check compressor overload. Replace if necessary. X X Thermostat wiring Check Y and W wiring at heat pump. Jumper Y and R for compressor

X Reduced or no water flow in

cooling

X Water temperature out of

range in cooling

heating

in heating

start-up

heating

ting (

–1.1 Cvs –12.2 C)

range

X Reduced or no airflow in

cooling

X Air temperature out of range Too much cold vent air. Bring entering-air temperature within design

X Improper freeze protect set-

ting (–1.1 Cvs –12.2 C)

X Poor drainage Check for piping slope away from unit.

X Moisture on sensor Check for moisture shorting to air coil.

X Cooling mode FP1> 51.7 C

OR FP2< 4.4 C

Check pump operation or valve operation/setting. Check water flow adjust to proper flow rate. Bring water temperature within design parameters.

Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. Dirty air coil — construction dust, etc. Perform preventative mainte-

nance; Clean air coil. High external static. Check duct design and downstream interference. Bring return-air temperature within design parameters.

Check charge and start-up water flow.

Check pump operation or water valve operation/setting. Plugged strainer or filter. Clean or replace. Check water flow adjust to proper flow rate.

Clip JW3 jumper for antifreeze (–12.2 C) use.

Bring water temperature within design parameters.

Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. High external static. Check duct design and downstream interference.

parameters. Normal airside applications will require –1.1 C only.

Check slope of unit toward outlet. Poor venting. Check vent location.

Check power supply wire size. Check compressor starting. Check 24-vac and unit transformer tap for correct power supply voltage.

Check 24-vac and unit transformer tap for correct power supply voltage.

51.7 C Check for poor airflow or overcharged unit.

Check for poor water flow or airflow.

operation in Test mode.

Page 32

Table 18 — Troubleshooting (cont)

FAULT HEATING COOLING POSSIBLE CAUSE SOLUTION

Only Compressor Runs X X Thermostat wiring Check G wiring at heat pump. Jumper G and R for fan operation.

Check Y and W wiring at heat pump. Jumper Y and R for compressor

X X Fan motor relay Jumper G and R for fan operation. Check for line voltage across BR

Unit Does Not Operate in Cooling

Insufficient Capacity/ Not Cooling or Heating Properly

High Head Pressure X Reduced or no airflow in

Low Suction Pressure X Reduced water flow in

Low Discharge Air Temperature in Heating

High Humidity X Too high airflow Check blower.

LEGEND

FP — Freeze Protection HP — High Pressure LED — Light-Emitting Diode LP — Low Pressure RV — Reversing Valve

X X Fan motor Check for line voltage at motor. Check capacitor.

X X Dir ty filter Replace or clean. X Reduced or no airflow in

X X Leaky ductwork Check supply and return-air temperatures at the unit and at distant

X X Low refrigerant charge Check superheat and subcooling. X X Restricted metering device Check superheat and subcooling. Replace.

X X Thermostat improperly

X X Unit undersized Recheck loads and sizing check sensible cooling load and heat pump

X X Scaling in water heat

X X Inlet water too hot or cold Check load, loop sizing, loop backfill, ground moisture.

X Air temperature out of range

X X Unit overcharged Check superheat and subcooling. Reweigh in charge. X X Non-condensables in

X X Restricted metering device Check superheat and subcooling. Replace.

X Water temperature out of

X X Insufficient charge Check for refrigerant leaks. X Too high airflow Check blower. X Poor performance See ‘Insufficient Capacity’ above.

X Reversing valve Set for cooling demand and check 24-vac on RV coil and at control.

X Thermostat setup Check for ‘O’ RV setup not ‘B’. X Thermostat wiring Check O wiring at heat pump. Jumper O and R for RV coil.

heating

X Reduced or no airflow in

cooling

X Defective reversing valve Perform RV touch test.

located

exchanger

heating

X Reduced or no water flow in

cooling

X Inlet water too hot Check load, loop sizing, loop backfill, ground moisture.

in heating

X Scaling in water heat

exchanger

system

heating

range

X Reduced airflow in cooling Check for dirty air filter and clean or replace.

X Air temperature out of range Too much cold vent air. Bring entering air temperature within design

X Unit oversized Recheck loads and sizing check sensible cooling load and heat pump

operation in Test mode.

contacts. Check fan power enable relay operation (if present).

If RV is stuck, run high pressure up by reducing water flow and while operating engage and disengage RV coil voltage to push valve.

Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. High external static. Check duct design and downstream interference. Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. High external static. Check duct design and downstream interference.

duct registers if significantly different, duct leaks are present.

Check location and for air drafts behind thermostat.

capacity. Perform scaling check and clean if necessary.

Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. High external static. Check duct design and downstream interference. Check pump operation or valve operation/setting. Check water flow adjust to proper flow rate.

Bring return-air temperature within design parameters.

Perform scaling check and clean if necessary.

Vacuum system and reweigh in charge.

Check pump operation or water valve operation/setting. Plugged strainer or filter. Clean or replace. Check water flow adjust to proper flow rate. Bring water temperature within design parameters.

Check fan motor operation and airflow restrictions. High external static. Check duct design and downstream interference.

parameters.

capacity.

Page 33

Page 34

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500077-01 Printed in U.S.A. Form 50HQP-C1SI Pg 34 11-10 Replaces: New

Page 35

START-UP CHECKLIST

CUSTOMER:___________________________ JOB NAME: _______________________________________

MODEL NO.:___________________________ SERIAL NO.:____________________ DATE:_________

I. PRE-START-UP

DOES THE UNIT VOLTAGE CORRESPOND WITH THE SUPPLY VOLTAGE AVAILABLE? (Y/N)

HAVE THE POWER AND CONTROL WIRING CONNECTIONS BEEN MADE AND TERMINALS TIGHT? (Y/N)

HAVE WATER CONNECTIONS BEEN MADE AND IS FLUID AVAILABLE AT HEAT EXCHANGER? (Y/N)

HAS PUMP BEEN TURNED ON AND ARE ISOLATION VALVES OPEN? (Y/N)

HAS CONDENSATE CONNECTION BEEN MADE AND IS A TRAP INSTALLED? (Y/N)

IS AN AIR FILTER INSTALLED? (Y/N)

II. START-UP

IS FAN OPERATING WHEN COMPRESSOR OPERATES? (Y/N)

IF 3-PHASE SCROLL COMPRESSOR IS PRESENT, VERIFY PROPER ROTATION PER INSTRUCTIONS. (Y/N)

UNIT VOLTAGE — COOLING OPERATION

PHASE AB VOLTS PHASE BC VOLTS PHASE CA VOLTS

(if 3 phase) (if 3 phase)

PHASE AB AMPS

PHASE BC AMPS PHASE CA AMPS

(if 3 phase) (if 3 phase)

CONTROL VOLTAGE

IS CONTROL VOLTAGE ABOVE 21.6 VOLTS? (Y/N) . IF NOT, CHECK FOR PROPER TRANSFORMER CONNECTION.

TEMPERATURES

FILL IN THE ANALYSIS CHART ATTACHED.

COAXIAL HEAT EXCHANGER

COOLING CYCLE: FLUID IN

CFLUID OUT C kPa L/s

HEATING CYCLE: FLUID IN

CFLUID OUT C kPa L/s

AIR COIL COOLING CYCLE:

AIR IN

HEATING CYCLE: AIR IN

C AIR OUT C

CL-1

Page 36

HEATING CYCLE ANALYSIS

SUCTION

COMPRESSOR

DISCHARGE

COAX

EXPANSION

VALV E

°C

AIR

COIL

°C

kPa

WATER OUT

WATER IN

°C

kPa

LOOK UP PRESSURE DROP IN TABLE 8 TO DETERMINE FLOW RATE

°C

LIQUID LINE

kPa

°C

DEW POINT

LOOK UP PRESSURE DROP IN TABLE 11 TO DETERMINE FLOW RATE

SUCTION

COMPRESSOR

DISCHARGE

COAX

EXPANSION

VALV E

°C

AIR

COIL

°C

kPa

WATER OUT

WATER IN

°C

kPa

LOOK UP PRESSURE DROP IN TABLE 8 TO DETERMINE FLOW RATE

°C

LIQUID LINE

kPa

°C

DEW POINT

LOOK UP PRESSURE DROP IN TABLE 11 TO DETERMINE FLOW RATE

COOLING CYCLE ANALYSIS

HEAT OF EXTRACTION (ABSORPTION) OR HEAT OF REJECTION =

FLOW RATE (L/s) x TEMP. DIFF. (DEG. C) x FLUID FACTOR* =

(kW)

SUPERHEAT = SUCTION TEMPERATURE – SUCTION SATURATION TEMPERATURE

SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE

*Use 500 for water, 485 for antifreeze.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500077-01 Printed in U.S.A. Form 50HQP-C1SI Pg CL-2 11-10 Replaces: New

(DEG C)

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - -

Carrier 50HQP072-120 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual