Carrier 50VQP084-300 User Manual

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Page 1

Vertical Large Capacity Water Source Heat Pumps

with PURON® Refrigerant (R-410A)

Installation, Start-Up, and

Service Instructions

AQUAZONE™

50VQP084-300

50 Hz

CONTENTS

Page

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

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

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

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

• STORAGE

•PROTECTION

•INSPECT UNIT

Step 3 — Locate Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Step 4 — Mount the Unit . . . . . . . . . . . . . . . . . . . . . . . . . 6

• DISCHARGE CONFIGURATION CONVERSION

• CONTROL BOX/MOTOR ACCESS CONFIGURATION CONVERSION

Step 5 — Check Duct System . . . . . . . . . . . . . . . . . . . . 9

• SO U N D AT T E NUATI O N

• EXISTING DUCT SYSTEM

Step 6 — Install Condensate Drain . . . . . . . . . . . . . . . 9

• VENTING

Step 7 — Pipe Connections . . . . . . . . . . . . . . . . . . . . . 10

• WATER LOOP APPLICATIONS

• GROUND-LOOP APPLICATIONS

• GROUND-WATER APPLICATIONS

Step 8 — Wire Field Power Supply . . . . . . . . . . . . . . 11

• POWER CONNECTION

• SUPPLY VOLTAGE

• 420-VOLT OPERATION

Step 9 — Wire Field Controls. . . . . . . . . . . . . . . . . . . . 17

• THERMOSTAT CONNECTIONS

• WATER FREEZE PROTECTION

• AIR COIL FREEZE PROTECTION

• ACCESSORY CONNECTIONS

• WATER SOLENOID VALVES

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-32

System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Airflow and External Static Pressure . . . . . . . . . . . 18

FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . .33,34

Complete C Control Jumper Settings. . . . . . . . . . . 33

Complete C Control DIP Switches. . . . . . . . . . . . . . 33

Deluxe D Control Jumper Settings . . . . . . . . . . . . . 33

Deluxe D Control DIP Switches . . . . . . . . . . . . . . . . 33

Deluxe D Control Accessory Relay

Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-36

Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Start Up System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 34

Unit Start-Up Cooling Mode . . . . . . . . . . . . . . . . . . . . . 35

Unit Start-Up Heating Mode . . . . . . . . . . . . . . . . . . . . . 35

Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Page

Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 36

Ground Coupled, Closed Loop and Plateframe

Heat Exchanger Well Systems . . . . . . . . . . . . . . . . 36

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36,37

Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Units with Aquazone Complete C Control . . . . . . . 37

Units with Aquazone Deluxe D Control. . . . . . . . . . 37

COMPLETE C AND DELUXE D BOARD

SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-39

Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Aquazone Deluxe D Control LED Indicators . . . . . 39

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39,40

Filters

Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 39

Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 39

Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 40

Refrigerant Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 40

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 40-43

Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Control Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

50VQP START-UP CHECKLIST . . . . . . . . . . . CL-1,CL-2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

IMPORTANT: Read the entire instruction manual before starting installation.

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

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

Catalog No. 04-53500080-01 Printed in U.S.A. Form 50VQP-C1SI Pg 1 11-10 Replaces: New

Page 2

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, U.S.A.) 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 or death. Before installing or servicing system, always turn off main power to system. There may be more than one disconnect switch. Turn off accessory heater power if applicable.

GENERAL

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

Water source heat pumps (WSHPs) are single-package 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.

Vertical units are designed for indoor installation only and are typically installed in a floor-level closet or a small mechanical room. Refer to Fig. 1 for an example of a typical vertical installation. See Fig. 2 and 3 for overall unit dimensions.

Installation, operation and

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.

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.

Page 3

Table 1 — 50VQP Unit Physical Data

Optional Discharge

Supply Air

Optional Discharge

Access Panel

Vibration Pad

Control Box

Supply Air

Supply Water

Return Water

Balancing Valve

Valves

Trap

Condensate

24 V Remote Mtd. Stat

Power Supply

Disconnect Switch or Per Local Codes

Condensate

Water In

Water Out

Unions

Fig. 1 — Typical 50VQP Unit Installation

UNIT 50VQP 084 096 120 150 168 192 240 300 COMPRESSOR QUANTITY Scroll (1) Scroll (2) Factory Charge HFC-410A (kg) per circuit 3.97 4.42 6.35 7.03 3.97 4.42 6.35 7.03 BLOWER MOTOR Blower Motor Quantity 1 Standard Motor (kW) .75 1.12 1.49 2.24 1.49 2.24 3.73 3.73 Large Motor (kW) 1.12 1.49 2.24 3.73 2.24 3.73 5.60 5.60 BLOWER No. of Blowers 12

Blower Wheel Size D x W (cm) 38.1 x 27.9

38.1 x

38.1

38.1 x 27.9

WATER CONNECTION SIZE

FPT (in.) [mm] 1-1/2 [38.1] 2 [50.8]

COAX VOLUME Volume (liters) 8.28 9.37 13.11 18.29 24.08 27.98 CONDENSATE CONNECTION SIZE FPT (in.) [mm] 1 [25.4] AIR COIL DATA Air Coil Dimensions H x W (cm) 91.4 x 121.9 91.4 x 121.9 Air Coil Total Face Area (sq m) 1.11 2.22 Air Coil Tube Size (cm) 3/8 [0.953] Air Coil Fin Spacing (fins per cm) 5.54.725.54.72 Air Coil Number of Rows 234234 MISCELLANEOUS DATA Filter Standard Throwaway (qty) (cm) (4) 45.74 x 63.5 x 2.5 (8) 45.74 x 63.5 x 2.5 Weight - Operating (kg) 399 422 435 725 755 769 Weight - Packaged (kg) 406 429 442 739 769 782

LEGEND FPT — Female Pipe Thread NOTES:

1. All units have grommet and spring compressor mountings, and

2.2 cm and 3.5 cm electrical knockouts.

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

OPTION MAXIMUM PRESSURE (kPa)

Base Unit 3100

Motorized Water Valve 2750

Internal Secondary Pump 999

38.1 x

38.1

2-1/2

[63.5]

Page 4

Fig. 2 — 50VQP084-150 Unit Dimensions

CONNECTIONS 50VQP084-120 50VQP150

Water Inlet (See Note 7) 11/2 in. FPT 2 in. FPT

Water Outlet (See Note 7) 11/2 in. FPT 2 in. FPT

Condensate Drain (See Note 8) 1 in. FPT 1 in. FPT

High Voltage Access (See Note 9) 1

/8 in. 13/8 in.

Low Voltage Access (See Note 9)

/8 in.

a50-8436

UNIT

50VQP

OVERALL

CABINET (cm)

DISCHARGE

CONNECTIONS (cm)

Duct Flange

WATER

CONNECTIONS (cm)

ELECTRICAL

KNOCKOUTS (cm)

RETURN AIR

CONNECTIONS (cm)

(Using Return Air Opening)

DepthBWidthCHeight

Supply

Width

Supply

Depth

FK1-Water

Inlet

1-Water

Outlet

M 3-

Condesate

NO1O2P QRSReturn

Depth

T Return Height

084-120 86.4 134.9 200.7 44.5 44.6 45.1 78.7 7.6 68.6 65.1 78.7 96.4 87.7 2.5 7.6 121.9 82.2 113.3 6.9

150 86.4 134.9 200.7 54.4 44.6 45.1 78.7 7.6 68.6 65.1 78.7 96.4 87.7 2.5 7.6 121.9 82.2 113.3 6.9

LEGEND

NOTES:

1. All dimensions in centimeters.

2. Units require 0.9 m clearance for water connections, CAP, CSP, MSP, and BSP service access.

3. Overall cabinet height dimension does not include duct flange when in top discharge configuration.

4. Overall cabinet width dimension does not include filter rack and duct flange when on front or back discharge configuration.

5. Side service access must be 0.9 m on either side that connections are made. If no connections are made on a side, then service access can be 15 mm minimum.

6. While access to all removable panels is not required, installer should take care to comply with all building codes and allow adequate clearance for future field service.

7. Water inlet and water outlet connections are available on either side (left or right) of the unit. Two MPT plugs are shipped loose in a plastic bag tied to the water leg in front of the unit. Installer must plug water inlet/outlet side not being connected to.

8. Condensate drain is available on either side (left or right) of unit. Drain hose and drain connection will be tied inside the unit. Installer must untie the drain hose and connect to the condensate drain hole of installer’s choice.

9. Electrical access is available on either side (left or right) of unit and is also available (left or right) in the front of the unit.

10. Overall depth — add 7.9 cm for 2.5 or 5 cm filter. Add 13 cm for 10 cm filter.

BSP —Blower Service Panel CAP — Control Access Panel CSP — Compressor Service Panel MSP — Motor Service Panel NRP — Non-Removable Panel

ALL CONFIGURATIONS REQUIRE SERVICE ACCESS AREA SHOWN BELOW

FRONT RETURN TOP DISCHARGE

NRP

AIR OUT

BSP

AIR OUT

NRP

Control Box

NRP

CAP+MSP

RETURN AIR

BSP

CSP

BSP

CAP+MSP

CSP+CAP+MSP

NOTE 5

19.3

REAR RETURN TOP DISCHARGE

19.3

REAR RETURN FRONT DISCHARGE

FRONT RETURN REAR DISCHARGE

SIDE

SERVICE ACCESS

(SEE NOTE)

SERVICE ACCESS

91 CM

FRONT AND BACK

4.3

Page 5

Fig. 3 — 50VQP168-300 Unit Dimensions

CONNECTIONS 50VQP168-240 50VQP300

Water Inlet (See Note 7) 2 in. FPT 21/2 in. FPT

Water Outlet (See Note 7) 2 in. FPT 2

/2 in. FPT

Condensate Drain (See Note 8) 1 in. FPT 1 in. FPT

High Voltage Access (See Note 9) 13/8 in. 13/8 in.

Low Voltage Access (See Note 9)

/8 in.

a50-8437

UNIT

50VQP

OVERALL

CABINET (cm)

DISCHARGE

CONNECTIONS (cm)

Duct Flange

WATER

CONNECTIONS (cm)

ELECTRICAL

KNOCKOUTS (cm)

RETURN AIR

CONNECTIONS (cm)

(Using Return Air Opening)

DepthBWidthCHeight

Supply

Width

Supply

Depth

FGK1-Water

Inlet

2-Water

Outlet

Condensate

NO1O2P QRSReturn

Depth

Return

Height

168-240 86.4 270.9 200.7 44.5 44.6 45.1 79.4 78.7 7.6 68.6 65.1 78.1 96.4 87.8 2.5 7.6 121.9 82.2 113.3 6.9

300 86.4 270.9 200.7 54.4 44.6 45.1 59.4 78.7 7.6 68.6 65.1 78.1 96.4 87.8 2.5 7.6 121.9 82.2 113.3 6.9

LEGEND

NOTES:

1. All dimensions in centimeters.

2. Units require 91 cm clearance for water connections, CAP, CSP, MSP, and BSP service access.

3. Overall cabinet height dimension does not include duct flange when in top discharge configuration.

4. Overall cabinet width dimension does not include filter rack and duct flange when on front or back discharge configuration.

5. Side service access must be 91 cm on either side that connections are made. If no connections are made on a side, then service access can be 15 mm minimum.

6. While access to all removable panels is not required, installer should take care to comply with all building codes and allow adequate clearance for future field service.

9. Electrical access is available on either side (left or right) of unit and is also available (left or right) in the front of the unit.

10. Overall depth — add 7.9 cm for 2.5 or 5 cm filter. Add 13 cm for 10 cm filter.

BSP —Blower Service Panel CAP — Control Access Panel CSP — Compressor Service Panel MSP — Motor Service Panel NRP — Non-Removable Panel

REAR RETURN TOP DISCHARGE

FRONT RETURN TOP DISCHARGE

FRONT RETURN REAR DISCHARGE

Control Box

CSP

NRP

CAP

MSP

NRP

RETURN AIR

AIR OUT

BSP

NRP

19.3

NOTE 5

Control Box

CSP+MSP

NRP

RETURN AIR

AIR OUT

CSP+CAP

19.3

BSP

4 5 4

NRP

Control Box

CSP+MSP

NRP

RETURN AIR

AIR OUT

CSP+CAP

BSP

4 5 4

NRP

Control Box

CSP

NRP

CAP

MSP

NRP

AIR OUT

NRP

4.3

4 5

CSP

REAR RETURN FRONT DISCHARGE

RETURN

AIR

RETURN

AIR

BSP

Side Service Access

(See Note)

Service Access

3’ (91 cm)

Front and Back

(All Configurations)

ALL CONFIGURATIONS REQUIRE SERVICE ACCESS AREA SHOWN BELOW

Page 6

PROTECTION — Once the units are properly positioned on

Fig. 4 — Remove Panels

BLOWER ACCESS

PANEL

C-BOX/

MOTOR ACCESS

PANEL

COMPRESSOR

ACCESS PANEL

a50-8466

Fig. 5 — Remove Blockoff Air Handler and Belt

BLOCKOFF

AIR HANDLER

a50-8467

Fig. 6 — Remove Bolts from

Blower Panel and Sides

STEP 3

a50-8468

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 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

DO NOT store or install units in corrosive environments or 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 units in an upright position. Tilting units on their sides may cause equipment damage.

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.

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

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 pressor support plate (two bolts on each side) to maximize vibration and sound alternation.

/4 in. (6 mm) shipping bolts from com-

• 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.

Step 4 — Mount the Unit — Vertical units are avail-

able in rear or front return air configurations. DISCHARGE CONFIGURATION CONVERSION — To

change the discharge configuration of the unit from top discharge to straight (right or left) discharge, follow the procedure below. To change the discharge configuration of the unit from straight (right or left) discharge to top discharge, reverse the procedure below.

1. Remove the 3 panels as shown in Fig. 4.

2. Remove blockoff air handler. Loosen belt and remove. See. Fig. 5.

CAUTION

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

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

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.

Step 3 — Locate Unit — The following guidelines

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.

NOTE: Water inlets/outlets and high/low voltage electrical access are available on either side of the unit. Electrical access is also available on the unit front. See Fig. 2 and 3.

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

NOTE: Unit has full filter frame bottom access for 25, 51, or 102 mm filters.

3. Remove 4 bolts from blower panel. Remove 4 bolts (2 bolts on each side) from blower sides. See Fig. 6.

Page 7

4. Remove 4 bolts and take blower glides out. See Fig. 7.

Fig. 7 — Remove Bolts and Blower Glides

BLOWER GLIDES

(2X)

a50-8469

Fig. 8 — Attach Blower Glides

a50-8470

Fig. 9 — Pull Blower Assembly to Glides

a50-8471

Fig. 10 — Rotate Blower Assembly

a50-8472

Fig. 11 — Push in Blower Assembly

a50-8473

Fig. 12 — Attach Blower Asembly

a50-8474

Fig. 13 — Remove Blower Glides and Reattach

STEP 10

a50-8475

8. When the blower assembly is parallel to the floor, push the blower assembly back so the blower panel is flush with the unit. See. Fig. 11.

5. Attach blower glides to blower bottom load brackets as shown in Fig. 8. Use bottom set of holes on blower bottom load brackets. The blower shaft should be sitting directly on top of the blower glides.

6. Stand in front and pull the blower assembly on to the ridge of the blower glides. See Fig. 9.

9. Attach blower assembly with 4 bolts as shown in Fig. 12.

10. Remove the 2 blower glides and reattach back into compressor section. See Fig. 13.

7. Rotate blower assembly using the blower glides as a guiding track. See Fig. 10.

11. Use four

/4 in. (6 mm) 20 UNC bolts (2 bolts on each side) to bolt blower assembly to blower bottom load brackets. Reattach belt and tighten. See Fig. 14.

Page 8

12. Reattach blockoff air handler as shown in Fig. 15.

Fig. 15 — Reattach Blockoff Air Handler

BLOCKOFF AIR HANDLER

a50-8477

Fig. 16 — Replace Panels

BLOWER FILLER

PANEL

C-BOX/MOTOR ACCESS

PANEL

COMPRESSOR

PANEL ACCESS

a50-8478

Fig. 17 — Remove Access Panels

FRONT C-BOX/

MOTOR ACCESS

PANEL

COMPRESSOR

ACCESS PANEL

BACK COMPRESSOR/

C-BOX/ MOTOR ACCESS

PANEL

RETURN

AIR

CONTROL BOX

a50-8479

Fig. 18 — Remove Motor and Control Box Covers

MOTOR COVER

CONTROL BOX COVER

a50-8480

Fig. 19 — Flip Control Box

a50-8481

Fig. 14 — Bolt Blower Assembly to Load Brackets

a50-8476

1. Mount the unit so that the return-air inlet is 90 degrees to the return-air grille. Install a sound baffle to reduce lineof-sight sound transmitted through return-air grilles.

2. Mount the unit on a rubber or neoprene pad to minimize vibration transmission to the building structure. Extend the pad beyond all four edges of the unit.

NOTE: Some codes require the use of a secondary drain pan under vertical units. Check local codes for more information.

CONTROL BOX/MOTOR ACCESS CONFIGURATION CONVERSION — To change the configuration of the control box/motor access from the front of the unit to the back of the unit, follow the procedure below. To change the configuration of the control box/motor access from the back of the unit to the front of the unit, reverse the procedure below.

1. Remove the 3 panels as shown in Fig. 17.

13. Put 3 panels back onto unit. See Fig. 16.

Sound minimization is achieved by enclosing the unit within a small mechanical room or a closet. The following are additional measures for sound control.

2. Remove motor cover and control box cover as shown in Fig. 18.

3. Remove 4 screws from control box. Using the guide rails as a guide, flip the control box down, slide the box across, and then flip the box up as shown in Fig. 19. Reattach the control box with screws.

SCREWS

RIGHT SIDE VIEW

Page 9

4. Loosen belt tension and take belt off. See Fig. 20.

Fig. 20 — Remove Belt and Bolt-Belt Adjustment

Assembly

STEP 5

STEP 4

BOLT-BELT ADJUSTMENT ASM

a50-8482

Fig. 21 — Move Bolt-Belt Adjustment Assembly

STEP 6

a50-8483

Fig. 22 — Replace Belt and Motor and

Control Box Covers

a50-8484

Fig. 23 — Replace Access Panels

FRONT RETURN TOP DISCHARGE

CONTROL BOX

a50-8485

5. Remove bolt-belt adjustment assembly. See Fig. 20.

8. Put 3 panels back onto unit. See Fig. 23.

6. Move bolt-belt adjustment assembly to opposite side and reattach. See Fig. 21.

7. Put belt back on and tighten. Put control box cover and motor cover on return side. See Fig. 22.

CONTROL BOX COVER

MOTOR COVER

Step 5 — Check 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.

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

EXISTING DUCT SYSTEM — If the unit is connected to 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 Drain — The con-

densate drain can be connected to either side of the unit. The 50VQP units come with a flex hose and 1 in. (25 m) FPT condensate connection tied inside. To install the condensate drain (see Fig. 24.):

1. Untie the flex hose and make interal trap on either the left side or right side of the unit.

2. Internally attach mounting plate with FPT fitting.

Page 10

Each unit must be installed with its own individual trap,

NOTE: Trap should be deep enough to offset maximum unit static difference.

Fig. 25 — Trap Condensate Drain

*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. 24 — Install Condensate Drain

a50-8486

vent and means to flush or blow out the condensate drain line. Do not install units with a common trap or vent. See Fig. 25.

Consider the following:

• Units are typically installed directly above each other on successive floors with condensate drains located near the units.

• Connect the unit condensate drain connection to the building condensate drain with a 1-in. (25 mm) drain line.

• The horizontal run of a condensate hose is usually too short to cause drainage problems, however the horizontal run pitch of the condensate line should be at least 1 cm for every 50 cm of run in the direction of flow. Avoid low points and unpitched piping since dirt collects in low or level areas and may cause stoppage and overflow.

• Install a condensate trap at each unit with the top of the trap positioned below the unit condensate drain connection.

• Design the length of the trap (water-seal) based upon the amount of positive or negative pressure on the drain pan. As a rule, 25 mm of trap is required for each 10 Pa of negative pressure on the unit.

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.

Step 7 — Pipe Connections — Depending 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.

All WSHP units utilize low temperature soldered female

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 connections 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.

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

10.0 C require 13 mm closed cell insulation on all piping surfaces to eliminate condensation.

• 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 are recommended. In addition to comply-

ing 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. 26. 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.

Page 11

• 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 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.

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.

— Check water supply. Water

Step 8 — Field Power Supply Wiring

WARNING

To avoid possible injury or death due to electrical shock, open the power supply disconnect switch and secure it in an open position during installation.

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) 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. 27-30 for a schematic of

the field connections which must be made by the installing (or electrical) contractor. See Tables 3 and 4 for fuses sizes.

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 3 and 4.

Make all final electrical connections with a length of flexi-

ble 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 CC terminal. See Tables 3 and 4 for correct wire and maximum overcurrent protection sizing.

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.

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. Determine percent voltage imbalance.

% Voltage Imbalance = 100 x

below the maximum allowable 2%.

imbalance constitutes abuse and may cause damage to electrical components.

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

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.

max voltage deviation from average voltage

average voltage

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

Average Voltage =

421

= 0.95%

This amount of phase imbalance is satisfactory as it is

Operation on improper line voltage or excessive phase

425 + 422 + 417

1264

= 421

Page 12

Table 2 — Water Quality Guidelines

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. 26 — Typical Ground-Water Piping Installation

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

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

Iron Fe

(Ferrous)

(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

HWG — Hot Water Generator HX — Heat Exchanger N/A — Design Limits Not Applicable Considering Recirculating Potable Water NR — Application Not Recommended SS — Stainless Steel

*Heat exchanger materials considered are copper, cupronickel, 304 SS (stain-

less 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.

LEGEND

MATERIAL*

All N/A

All

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

All

All N/A

CLOSED RECIRCULATING† OPEN LOOP AND RECIRCULATING WELL**

6.0 - 7.5

–0.5 to +0.5

<0.2 ppm (Ferrous)

<0.5 ppm of Oxygen

6 - 8.5

<0.5 ppm

6 - 8.5

Monitor/treat as needed.

<10 ppm of particles and a maximum velocity of 6 fps.

Filtered for maximum

800 micron size.

If >7.5 minimize steel pipe use.

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

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

If Fe

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

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

At H

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

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

<20 ppm NR NR

<10 ppm (<1 ppm “sandfree” 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.)

††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.

If <–0.5 minimize steel pipe use.

Above this level deposition will occur.

Rotten egg smell appears at 0.5 ppm level.

Page 13

Fig. 27 — 50VQP084-168 Unit with Complete C Control (Typical)

a50-8438

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 jumper provides low temperature protection for WATER. When using ANTIFREEZE solu-

tions, cut JW3 jumper.

5. Typical heat pump thermostat wiring shown. Refer to thermostat installation instructions for wir-

ing 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 avail-

able 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. For dual point power option, blower wires (3 qty) will go to PDB2 only.

AL — Alarm Relay

BC — Blower Contactor

CB — Circuit Breaker

CC — Compressor Contactor

CO — Sensor, Condensate Overflow

DPP — Dual Point Power

DS — Disconnect Switch

FP1 — Sensor, Water Coil Freeze Protection

FP2 — Sensor, Air Coil Freeze Protection

HP — High-Pressure Switch

HPWS — High-Pressure Water Switch

JW3 — Clippable Field Selection Jumper

LOC — Loss of Charge Pressure Switch

MV — Motorized Valve

PDB1 — Power Distribution Block

PDB2 — Power Distribution Block Dual Point Option

RVS — Reversing Valve Solenoid

TRANS — Transformer

Factory Line Voltage Wiring

Factory Low Voltage Wiring

Field Line Voltage Wiring

Field Low Voltage Wiring

Printed Circuit Trace

Optional Wiring

LEGEND

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

Complete C

Page 14

NOTES:

1. Compressor and blower motor thermally protected internally.

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

3. 380/420-v transformers will be connected for 380-v operation. For 420-v operation, dis-

connect VIO lead at L1, and attach BRN lead to L1. Close open end of VIO lead.

4. FP1 thermistor provides freeze protection for WATER. When using ANTIFREEZE solu-

tion, 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 AL2 DRY (JW4) jumper and dry con-

tact will be available between AL1 and AL2.

7. Transformer secondary ground via Deluxe D board standoffs and screws to control box.

(Ground available from top two standoffs as shown.)

8. For dual point power option, blower wires (3 qty) will go to PDB2 only.

AL — Alarm Relay

BC — Blower Contactor

CB — Circuit Breaker

CC — Compressor Contactor

CO — Sensor, Condensate Overflow

DPP — Dual Po int Power

DS — Disconnect Switch

FP1 — Sensor, Water Coil Freeze Protection

FP2 — Sensor, Air Coil Freeze Protection

HP — High-Pressure Switch

HPWS — High-Pressure Water Switch

JW3 — Clippable Field Selection Jumper

LOC — Loss of Charge Pressure Switch

MV — Motorized Valve

PDB — Power Distribution Block

PDB2 — Power Distribution Block Dual Point Option

RVS — Reversing Valve Solenoid

TRANS — Transformer

Factory Line Voltage Wiring

Factory Low Voltage Wiring

Field Line Voltage Wiring

Field Low Voltage Wiring

Printed Circuit Trace

Optional Wiring

LEGEND

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. 28 — 50VQP084-168 with Deluxe D Control (Typical)

a50-8439

Deluxe D

Page 15

AL1

AL2

CMP1

FAN

PWR

HS1/EXH/RVS

PREMIER

LINK

COMPLETE

CONTROL

PWR

S P

S A

CMPSAFE

AL1

CMP1

FAN

PWR

PREMIER

LINK

DELUXE

CONTROL

PWR

CMPSAFE

HS2

HS1

CMP2

O/W2

S P T

S A

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. 30 — PremierLink Controller Applications 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

Fig. 29 — PremierLink™ Controller Applications with Complete C Control

Page 16

Table 3 — 50VQP Unit Electrical Data — Standard Unit

50VQP UNIT

SIZE

084 380/420-3-50 360/440

096 380/420-3-50 360/440 A,B,C 1 12.2 101.0 2.5 14.7 17.8 25

120 380/420-3-50 360/440

150 380/420-3-50 360/440

168 380/420-3-50 360/440 A,B,C 2 11.2 75.0 3.4 25.8 28.6 35 192 380/420-3-50 360/440 A,B,C 2 12.2 101.0 4.9 29.3 32.3 40 240 380/420-3-50 360/440 A,B,C 2 16.7 111.0 7.8 41.2 45.4 60

300 380/420-3-50 360/440

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

VOLTAGE (V-Ph-Hz)

LEGEND NOTES:

MIN/MAX

VOLTAGE

BLOWER

OPTION

A,B,C 1 11.2 75.0 1.8 13.0 15.8 25

E 1 11.2 75.0 2.5 13.7 16.5 25

A,B,C 1 16.7 111.0 3.6 20.3 24.5 40

E 1 16.7 111.0 4.9 21.6 25.8 40

A,B,C 1 18.6 118.0 4.9 23.5 28.2 45

E 1 18.6 118.0 7.8 26.4 31.1 45

A,B,C 2 18.6 118.0 7.8 45.0 49.7 60

E 2 18.6 118.0 12.2 49.4 54.0 70

COMPRESSOR FAN

qty RLA LRA

1. HACR circuit breaker in U.S.A. only.

2. All fuses Class RK-5.

MOTOR

FLA

TOTAL UN IT

FLA

MCA

MAX FUSE/

Table 4 — 50VQP Unit Electrical Data — Dual Point Power Unit

50VQP

UNIT SIZE

084 380/420-3-50 360/440

096 380/420-3-50 360/440 A,B,C 1 12.2 101.0 12.2 15.3 25 2.5 3.1 15

120 380/420-3-50 360/440

150 380/420-3-50 360/440

168 380/420-3-50 360/440 A,B,C 2 11.2 75.0 22.4 25.2 35 3.4 4.3 15 192 380/420-3-50 360/440 A,B,C 2 12.2 101.0 24.4 27.4 35 4.9 6.1 15 240 380/420-3-50 360/440 A,B,C 2 16.7 111.0 33.4 37.6 50 7.8 9.8 15

300 380/420-3-50 360/440

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

NOTES:

1. HACR circuit breaker in U.S.A. only.

2. All fuses Class RK-5.

VOLTAGE (V-Ph-Hz)

MIN/MAX

VOLTAGE

LEGEND

BLOWER

OPTION

A,B,C 1 11.2 75.0 11.2 14.0 25 1.8 2.3 15

A,B,C 1 16.7 111.0 16.7 20.9 35 3.6 4.5 15

A,B,C 1 18.6 118.0 18.6 23.3 40 4.9 6.1 15

A,B,C 2 18.6 118.0 37.2 41.9 60 7.8 9.8 15

qty RLA LRA

E 1 11.2 75.0 11.2 14.0 25 2.5 3.1 15

E 1 16.7 111.0 16.7 20.9 35 4.9 6.1 15

E 1 18.6 118.0 18.6 23.3 40 7.8 9.8 15

E 2 18.6 118.0 37.2 41.9 60 12.2 15.3 25

COMPRESSOR EMERGENCY POWER SUPPLY

TOTAL

COMP FLA

COMP

MCA

COMP

MAX FUSE

FAN M OTOR

FLA

FAN

MCA

HACR

FAN

MAX FUSE

Page 17

Step 9 — Field Control Wiring

Fig. 31 — Low Voltage Field Wiring

COMPLETE C CONTROL

CAPACITOR

LINE

LOAD

COMPRESSOR CONTACTOR

TRANSFORMER

GGGGR

AL1

SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 SW9

OFF

DEHUM

CFM

TB1

THERMOSTAT CONNECTION

a50-8197

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

AQUAZONE CONTROL (Complete C Control Shown)

Fig. 32 — Typical Aquazone™ Control Board

Jumper Locations

a50-

6268tf.tif

TYPICAL WATER VALVE

24 VAC

TERMINAL STRIP P2

Fig. 33 — Typical Aquazone Accessory Wiring

(Control D Shown)

Fig. 35 — Taco SBV Valve Wiring

Fig. 34 — AMV Valve Wiring

a50-8441

a50-8442

THERMOSTAT CONNECTIONS — The thermostat should be wired directly to the Aquazone™ control board. See Fig. 27-31.

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. 32.

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

WATER SOLENOID VALVES — An external solenoid valve(s) should be used on ground water installations to shut off flow to the unit when the compressor is not operating. A slow closing valve may be required to help reduce water hammer. Figure 33 shows typical wiring for a 24-vac external solenoid valve. Figures 34 and 35 illustrate typical slow closing water control valve wiring for Taco 500 Series and Taco ESP Series valves. Slow closing valves take approximately 60 sec. to open (very little water will flow before 45 sec.). Once fully open, an end switch allows the compressor to be energized (only on valves with end switches). Only relay or triac based electronic thermostats should be used with slow closing valves. When wired as shown, the slow closing valve will operate properly with the following notations:

1. The valve will remain open during a unit lockout.

2. The valve will draw approximately 25 to 35 VA through the “Y” signal of the thermostat.

IMPORTANT: Connecting a water solenoid valve can overheat the anticipators of electromechanical thermostats. Only use relay based electronic thermostats.

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. 33. Refer to the specific unit wiring schematic for details.

HEATER SWITCH

AMV

TACO VALVE

THERMOSTAT

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.

When the installation is complete,

Page 18

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 10% solution of dishwasher detergent and water is recommended for both sides of the coil. Rinse thoroughly with water.

Airflow and External Static Pressure — The

50VQP 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 50VQP 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 5-12 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 5-12.

Page 19

755.2

802.4

849.6

896.8

944.0

991.2

1038.4

1085.6

1132.8

1180.0

1227.2

1274.4

1321.6

1368.8

1416.0

Table 5 — 50VQP084 Blower Performance Data

AIRFLOW

(l/s)

BkW — — 0.12 0.15 0.13 0.19 0.22 0.24 0.26 0.30 0.31 0.33 0.37 0.39 — —

Sheave/Mtr ——BBAAAACCCCCC——

RPM — — 388 437 482 527 564 599 630 663 690 716 744 767 — —

Turns Open — — 3.5 1.5 5 3.5 2.5 1.5 5.5 4.5 3.5 2.5 2 1 — —

BkW — — 0.13 0.16 0.15 0.20 0.24 0.25 0.28 0.32 0.34 0.36 0.40 0.42 — —

Sheave/Mtr ——BBAAAACCCCCC——

RPM — — 392 440 485 529 566 601 633 666 693 720 747 771 — —

Turns Open —— 31.553.521.55.54.532.52 1 ——

BkW — — 0.14 0.17 0.17 0.22 0.25 0.27 0.29 0.33 0.36 0.38 0.42 — — —

Sheave/Mtr —— B B A A A A C C C C C ———

RPM — — 395 444 488 530 568 603 636 668 697 723 751 — — —

Turns Open ——2.51 5 3.52 1 5 4 3 21.5———

BkW — — 0.15 0.18 0.19 0.23 0.27 0.28 0.31 0.35 0.38 0.41 0.45 — — —

Sheave/Mtr —— B B A A A C C C C C C ———

RPM — — 399 447 491 532 571 606 639 671 700 727 754 — — —

Turns Open — — 2.5 1 4.5 3 2 5.5 5 4 3 2 1.5 — — —

BkW — 0.11 0.16 0.19 0.21 0.25 0.28 0.30 0.33 0.37 0.40 0.43 0.47 — — —

Sheave/Mtr — B B A A A A C C C C C C ———

RPM — 352 403 450 493 534 573 608 641 673 703 730 757 — — —

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

BkW — 0.12 0.18 0.22 0.25 0.28 0.31 0.33 0.37 0.40 0.44 0.48 0.52 — — —

Sheave/Mtr — B B A A A A C C C C C C ———

RPM — 362 410 457 499 537 577 612 647 678 710 737 764 — — —

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

BkW — 0.17 0.21 0.24 0.25 0.29 0.33 0.37 0.40 0.44 0.48 0.52 0.55 — — —

Sheave/Mtr — B B A A A A C C C C C C ———

RPM — 375 424 467 507 548 584 621 653 684 716 743 772 — — —

Turns Open — 4 2 5 42.51.554.53.52.51.51 ———

BkW —0.180.220.250.290.330.370.400.440.480.520.55————

Sheave/Mtr — B B A A A A C C C C C ————

RPM —387435476518555590627659692721751————

Turns Open —3.51.55 42.51.55 4 3 21.5————

BkW 0.180.220.250.290.330.370.400.440.480.520.550.59————

Sheave/Mtr B B B A A A A C C C C C————

RPM 353403446485527563600633665697726756————

Turns Open 4..531.54.53.52.51 5 4 3 21.5————

BkW 0.210.230.250.290.330.370.400.440.480.550.590.63————

Sheave/Mtr B B B A A A A C C C C C————

RPM 362411452495532567604636670700729759————

Turns Open 4 2.514.53.52 14.54 3 2 1 ————

BkW 0.220.250.320.360.400.430.470.510.550.580.620.66————

Sheave/Mtr B B A A A A C C C C C C ————

RPM 377420460500536570606638671701729759————

Turns Open 3.525.54 3 25.54.53.52.5 2 1 ————

BkW 0.250.280.320.360.400.440.480.520.550.590.630.67————

Sheave/Mtr B B A A A A C C C C C C ————

RPM 381423463504539576609641674703734762————

Turns Open 3.525.54 31.55.54.53.52.51.51 ————

BkW 0.250.290.330.370.400.480.520.550.590.630.670.70————

Sheave/Mtr B B A A A A C C C C C C ————

RPM 390431474510545581613647677706737764————

Turns Open 3 1.553.52.51.55.543.52.51.51 ————

BkW 0.290.330.370.400.440.480.550.590.630.670.700.78————

Sheave/Mtr B B A A A A C C C C C E ————

RPM 399440481517551586618651681710740767————

Turns Open 2.51.553.5 2 1 5 4 3 21.51 ————

BkW 0.320.370.400.440.480.520.550.630.670.700.780.82————

Sheave/Mtr B B A A A A C C C C E E ————

RPM 412455492526563595628658687718745774————

Turns Open 2.514.53 2 1 5 4 3 21.51 ————

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

EXTERNAL STATIC PRESSURE (Pa)

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High r pm/Standard Motor E—High rpm/Large Motor ESP — Exter nal Static Pressure

LEGEND NOTES:

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

4. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/Standard Motor, E = High Rpm/Large Motor.

Page 20

AIRFLOW

(l/s)

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

BkW — 0.100.140.170.170.220.250.270.290.330.360.380.42 — — —

849.6

Sheave/Mtr —BBAAAAACCCCC———

RPM — 343 395 444 488 530 568 603 636 668 697 723 751 — — —

Turns Open —53653.52.51.55432.51.5———

BkW — 0.110.150.180.190.230.270.280.310.350.380.410.45 — — —

896.8

Sheave/Mtr —BBAAAAACCCCC———

RPM — 348 399 447 491 532 571 606 639 671 700 727 754 — — —

Turns Open —4.53653.521.55432.51.5———

BkW — 0.110.160.190.210.250.280.300.330.370.400.430.47 — — —

944.0

Sheave/Mtr —BBAAAAACCCCC———

RPM — 352 403 450 493 534 573 608 641 673 703 730 757 — — —

Turns Open —4.535.54.5321542.521.5———

BkW — 0.120.180.220.250.280.310.330.370.400.440.480.52 — — —

991.2

Sheave/Mtr —BBAAAAACCCCC———

RPM — 362 410 457 499 537 577 612 647 678 710 737 764 — — —

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

BkW — 0.170.210.240.250.290.330.370.400.440.480.520.55 — — —

1038.4

Sheave/Mtr —BBAAAAACCCCC———

RPM — 375 424 467 507 548 584 621 653 684 716 743 772 — — —

Turns Open — 4 2 5 4.5 3 1.5 1 4.5 3.5 2.5 2 1 — — —

BkW 0.16 0.18 0.22 0.25 0.29 0.33 0.37 0.40 0.44 0.48 0.52 0.55 — — — —

1085.6

Sheave/Mtr BBAAAAACCCCC————

RPM 339 387 435 476 518 555 590 627 659 692 721 751 — — — —

Turns Open 5 3.5 6 5 4 2.5 1.5 5.5 4.5 3 2.5 1.5 — — — —

BkW 0.18 0.22 0.25 0.29 0.33 0.37 0.40 0.44 0.48 0.52 0.55 0.59 — — — —

1132.8

Sheave/Mtr BBAAAAACCCCC————

RPM 353 403 446 485 527 563 600 633 665 697 726 756 — — — —

Turns Open 4.53653.52.51.55.54321.5————

BkW 0.21 0.23 0.25 0.29 0.33 0.37 0.40 0.44 0.48 0.55 0.59 0.63 — — — —

1180.0

Sheave/Mtr BBAAAAACCCCC————

RPM 362 411 452 495 532 567 604 636 670 700 729 759 — — — —

Turns Open 4.02.55.54.53.52154321————

BkW 0.22 0.25 0.32 0.36 0.40 0.43 0.47 0.51 0.55 0.58 0.62 0.66 — — — —

1227.2

Sheave/Mtr BBAAAAACCCCC————

RPM 377 420 460 500 536 570 606 638 671 701 729 759 — — — —

Turns Open 3.525.54.53 2 1 53.52.52 1 ————

BkW 0.25 0.28 0.32 0.36 0.40 0.44 0.48 0.52 0.55 0.59 0.63 0.67 — — — —

1274.4

Sheave/Mtr BBAAAAACCCCC————

RPM 381 423 463 504 539 576 609 641 674 703 734 762 — — — —

Turns Open 3.525431.5153.52.521————

1321.6

BkW

Sheave/Mtr BBAAAAACCCC—————

RPM 390 431 474 510 545 581 613 647 677 706 737 — — — — —

0.25 0.29 0.33 0.37 0.40 0.48 0.52 0.55 0.59 0.63 0.67 — — — — —

Turns Open 325431.514.53.52.52—————

BkW 0.29 0.33 0.37 0.40 0.44 0.48 0.55 0.59 0.63 0.67 0.70 — — — — —

1368.8

Sheave/Mtr BAAAAACCCCC—————

RPM 399 440 481 517 551 586 618 651 681 710 740 — — — — —

Turns Open 3 6 4.5 3.5 2.5 1.5 5.5 4.5 3 2.5 1.5 — — — — —

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High rpm/Standard Motor ESP — External Static Pressure

LEGEND NOTES:

Table 6 — 50VQP096 Blower Performance Data

EXTERNAL STATIC PRESSURE (Pa)

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

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

Page 21

AIRFLOW

(l/s)

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

BkW 0.32 0.37 0.40 0.44 0.48 0.52 0.55 0.63 0.67 0.70 0.78 — — — — —

1416.0

Sheave/Mtr BAAAAACCCCC—————

RPM 412 455 492 526 563 595 628 658 687 718 745 — — — — —

Turns Open 2.55.54.53.52154321.5—————

BkW 0.33 0.40 0.44 0.48 0.52 0.55 0.63 0.67 0.70 0.74 0.78 — — — — —

1463.2

Sheave/Mtr BAAAAACCCCC—————

RPM 421 459 499 533 569 600 633 663 691 722 749 — — — — —

Turns Open 25.5432154321.5—————

BkW 0.37 0.40 0.48 0.52 0.55 0.63 0.67 0.70 0.74 0.78 0.85 — — — — —

1510.4

Sheave/Mtr AAAAAACCCCC—————

RPM 441 478 513 549 581 614 644 672 703 730 759 — — — — —

Turns Open 6 5 42.51.514.53.52.521.5—————

BkW 0.40 0.48 0.52 0.55 0.62 0.67 0.70 0.74 0.78 0.85 0.92 — — — — —

1557.6

Sheave/Mtr A A A A A C C C C C C —————

RPM 456 495 529 561 595 625 656 685 712 741 767 — — — — —

Turns Open 5.54.53.52 15.54 32.52 1 —————

BkW 0.47 0.52 0.55 0.59 0.63 0.70 0.74 0.78 0.85 0.89 0.93 — — — — —

1604.8

Sheave/Mtr A A A A A C C C C C C —————

RPM 471 506 539 574 604 633 664 692 721 747 773 — — — — —

Turns Open 5.54 31.51 5 4 3 21.51 —————

BkW 0.48 0.55 0.59 0.63 0.70 0.74 0.78 0.85 0.92 0.96 — — — — — —

1652.0

Sheave/Mtr A A A A C C C C C C ——————

RPM 486 520 555 586 615 647 674 704 730 756 — — — — — —

Turns Open 53.52.515.54.54 3 21.5——————

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High rpm/Standard Motor ESP — External Static Pressure

LEGEND NOTES:

Table 6 — 50VQP096 Blower Performance Data (cont)

EXTERNAL STATIC PRESSURE (Pa)

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

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

Page 22

AIRFLOW

(l/s)

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

BkW — — 0.18 0.19 0.22 0.27 0.30 0.34 0.37 0.42 0.45 0.48 0.52 0.55 0.60 0.63

1085.6

Sheave/Mtr ——BBBAAAAAACCCCC

RPM — — 376 423 466 503 543 580 616 649 682 712 742 770 797 822

Turns Open ——64.536543215.54.5432.5

BkW — — 0.19 0.22 0.27 0.30 0.34 0.37 0.42 0.45 0.52 0.52 0.57 0.60 0.67 0.70

1132.8

Sheave/Mtr ——BBBAAAAACCCCCC

RPM — — 395 439 481 517 555 592 626 659 691 722 751 779 805 831

Turns Open — — 5.5 4 2.55.54.53.52.51.5 6 5.54.53.5 3 2

BkW — — 0.22 0.25 0.30 0.33 0.37 0.40 0.45 0.48 0.55 0.60 0.63 0.67 0.70 0.75

1180.0

Sheave/Mtr ——BBBAAAAACCCCCC

RPM — — 412 455 496 530 567 603 637 669 701 730 759 787 813 839

Turns Open ——531.55.543216543.52.51.5

BkW — 0.220.250.300.330.370.400.450.480.550.600.630.670.700.750.78

1227.2

Sheave/Mtr —BBBAAAAAACCCCCC

RPM — 385 430 471 506 544 579 614 647 679 710 739 768 795 822 847

Turns Open — 6 4 2.5 6 5 3.5 2.5 1.5 1 5.5 4.5 4 3 2 1.5

BkW — 0.250.300.330.370.400.450.480.550.600.630.670.700.750.780.82

1274.4

Sheave/Mtr —BBBAAAAACCCCCCC

RPM — 403 446 486 520 556 591 625 657 689 719 748 776 803 830 855

Turns Open — 5 3.5 2 5.5 4.5 3.5 2.5 1 6 5.5 4.5 3.5 3 2 1

BkW 0.25 0.30 0.33 0.37 0.40 0.45 0.48 0.52 0.60 0.63 0.67 0.70 0.75 0.78 0.82 0.90

1321.6

Sheave/Mtr BBBAAAAAACCCCCCC

RPM 377 421 462 501 534 569 603 636 668 698 728 757 785 812 838 860

Turns Open 64.536543216543.52.51.51

BkW 0.30 0.33 0.37 0.40 0.45 0.48 0.52 0.55 0.63 0.67 0.70 0.75 0.78 0.85 0.90 0.93

1368.8

Sheave/Mtr BBBAAAAAACCCCCCC

RPM 395 438 478 515 547 582 615 647 678 708 737 765 793 819 845 868

Turns Open 5.5 4 2.5 6 4.5 3.5 2.5 1.5 1 5.5 5 4 3 2.5 1.5 0.5

BkW 0.33 0.37 0.40 0.44 0.48 0.52 0.55 0.63 0.67 0.70 0.78 0.82 0.85 0.89 0.93 1.00

1416.0

Sheave/Mtr BBBAAAAACCCCCCCC

RPM 414 453 491 529 563 595 626 659 689 717 745 774 801 826 851 877

Turns Open 4.5 3.5 2 5.5 4.5 3.5 2.5 1.5 6 5.5 4.5 3.5 3 2 1 0.5

BkW 0.37 0.40 0.44 0.48 0.52 0.55 0.63 0.67 0.70 0.78 0.82 0.85 0.89 0.93 1.00 1.08

1463.2

Sheave/Mtr BBAAAAAACCCCCCCC

RPM 431 469 504 542 575 607 637 670 699 726 754 783 809 834 859 884

Turns Open 43654321654.53.52.5210.5

BkW 0.40 0.44 0.48 0.52 0.55 0.63 0.67 0.70 0.78 0.82 0.85 0.93 0.96 1.00 1.08 1.14

1510.4

Sheave/Mtr BBAAAAAACCCCCCCC

RPM

448 485 520 556 588 619 649 680 708 736 765 791 817 841 868 891

Turns Open 3.5 2 5.54.53.52.51.5 1 5.5 5 4 3 2.51.50.5 0

BkW 0.44 0.48 0.52 0.55 0.63 0.67 0.70 0.78 0.82 0.85 0.93 0.96 1.00 1.08 1.11 1.15

1557.6

Sheave/Mtr BBAAAAACCCCCCCCC

RPM 464 500 537 570 601 631 662 691 718 745 774 799 824 849 875 898

Turns Open 31.554321.565.54.54321.50.50

BkW 0.48 0.52 0.55 0.63 0.67 0.70 0.78 0.82 0.85 0.93 0.96 1.00 1.08 1.11 1.15 —

1604.8

Sheave/Mtr BAAAAAACCCCCCCC—

RPM 480 515 551 583 613 642 674 701 728 754 783 808 833 857 882 —

Turns Open 2.5 6 4.5 3.5 3 2 1 6 5 4.5 3.5 2.5 2 1 0 —

BkW 0.52 0.55 0.63 0.67 0.70 0.78 0.82 0.85 0.93 0.96 1.00 1.08 1.15 1.19 1.23 —

1652.0

Sheave/Mtr BAAAAACCCCCCCCC—

RPM 496 530 565 596 625 654 684 711 738 766 792 816 841 867 890 —

Turns Open 25.543.52.51.565.54.54 32.51.51 0 —

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High r pm/Standard Motor E—High rpm/Large Motor ESP — Exter nal Static Pressure

LEGEND NOTES:

Table 7 — 50VQP120 Blower Performance Data

EXTERNAL STATIC PRESSURE (Pa)

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

4. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/Standard Motor, E = High Rpm/Large Motor.

Page 23

AIRFLOW

(l/s)

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

BkW 0.55 0.63 0.67 0.70 0.78 0.82 0.85 0.93 1.00 1.04 1.08 1.15 1.19 1.23 1.30 —

1699.2

Sheave/Mtr AAAAAACCCCCCCCC—

RPM 511 544 578 608 637 668 695 722 748 776 800 825 849 874 897 —

Turns Open 653.5321654.53.5321.50.50—

BkW 0.63 0.67 0.70 0.78 0.85 0.89 0.93 1.00 1.04 1.08 1.15 1.23 1.26 1.30 — —

1746.4

Sheave/Mtr AAAAAACCCCCCCC——

RPM 526 561 592 621 649 679 706 732 758 785 809 833 857 882 — —

Turns Open 5.5 4.5 3.5 2.5 1.5 1 5.5 5 4 3.5 2.5 2 1 0.5 — —

BkW 0.67 0.70 0.78 0.82 0.85 0.93 1.00 1.04 1.08 1.15 1.23 1.26 1.30 1.38 — —

1793.6

Sheave/Mtr AAAAACCCCCCCCC——

RPM 544 575 605 633 661 691 717 742 767 794 818 842 867 890 — —

Turns Open 5432165.54.54321.50.50——

BkW 0.70 0.78 0.85 0.89 0.93 1.00 1.08 1.11 1.15 1.23 1.30 1.34 1.38 1.45 — —

1840.8

Sheave/Mtr AAAAACCCCCCCCE——

RPM 555 589 618 646 676 702 728 753 779 803 827 850 875 898 — —

Turns Open 4.5 3.5 2.5 1.5 6 6 5 4 3.5 2.5 2 1 0.5 0 — —

BkW 0.78 0.82 0.85 0.93 1.00 1.08 1.11 1.15 1.23 1.30 1.34 1.38 1.50 1.53 — —

1888.0

Sheave/Mtr A AA ACCCCCCCCEE——

RPM 572 601 630 657 686 712 737 762 789 812 836 859 883 905 — —

Turns Open 432165.54.5432.51.5100——

BkW 0.85 0.89 0.93 1.00 1.08 1.11 1.15 1.23 1.30 1.38 1.41 1.50 1.53 — — —

1935.2

Sheave/Mtr A AA ACCCCCCCEE———

RPM 589 617 645 672 700 726 751 775 801 824 847 872 894 — — —

Turns Open 3.5 2.5 1.5 1 6 5 4.5 3.5 2.5 2 1 0.5 0 — — —

BkW 0.93 0.96 1.00 1.08 1.15 1.19 1.23 1.30 1.38 1.50 1.53 1.56 — — — —

1982.4

Sheave/Mtr A AACCCCCC EEE————

RPM 605 633 660 689 714 739 763 790 813 836 858 882 — — — —

Turns Open 32165.54.54321.510.5————

BkW 0.96 1.00 1.08 1.15 1.23 1.26 1.30 1.38 1.50 1.53 1.60 1.68 — — — —

2029.6

Sheave/Mtr A AACCCCC EEEE————

RPM 621 649 675 703 728 752 776 802 827 847 869 893 — — — —

Turns Open 2.51.516543.52.521.510————

BkW 1.0401.081.151.231.301.381.411.501.531.601.681.75 — — — —

2076.8

Sheave/Mtr A ACCCCCEC EEE————

RPM 637 664 690 717 742 766 791 814 836 858 882 904 — — — —

Turns Open 2165.54.5432210.50————

BkW 1.11 1.15 1.23 1.30 1.38 1.45 1.53 1.56 1.60 1.68 1.75 — — — — —

2124.0

Sheave/Mtr A ACCCCE ECEE—————

RPM 653 679 707 731 755 779 804 826 848 870 893 — — — — —

Turns Open 1.515.55 43.53 21.51 0 —————

BkW 0.96 1.00 1.08 1.15 1.23 1.26 1.30 1.38 1.50 1.53 1.60 1.68 — — — —

2029.6

Sheave/Mtr A AACCCCC EEEE————

RPM 621 649 675 703 728 752 776 802 827 847 869 893 — — — —

Turns Open 2.51.516543.52.521.510————

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High r pm/Standard Motor E—High rpm/Large Motor ESP — Exter nal Static Pressure

LEGEND NOTES:

Table 7 — 50VQP120 Blower Performance Data (cont)

EXTERNAL STATIC PRESSURE (Pa)

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

4. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/Standard Motor, E = High Rpm/Large Motor.

Page 24

AIRFLOW

(l/s)

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

BkW —————0.340.370.420.490.520.570.640.720.790.870.94

1321.6

Sheave/Mtr ————— BBAAAAAACCC

RPM —————533572606640676712746783821859901

Turns Open —————5.546543215.54.53

BkW —————0.370.420.450.520.570.600.670.750.810.900.97

1368.8

Sheave/Mtr ————— BBAAAAAACCC

RPM —————544582619652686719754789823860902

Turns Open ————— 5 45.54.53.52.51.515.54 3

BkW ————0.370.420.450.520.570.600.670.750.790.820.941.02

1416.0

Sheave/Mtr ———— BBBAAAAACCCC

RPM ————521558595628663697728762796828863903

Turns Open ———— 64.53.55.54.53.52.51.56 5 4 3

BkW ————0.420.450.520.550.600.640.720.780.820.900.971.05

1463.2

Sheave/Mtr ———— BBAAAAAACCCC

RPM ————536572608640674705737769799832866904

Turns Open ————5.54 6543216543

BkW ————0.450.490.550.600.670.700.750.850.900.971.051.12

1510.4

Sheave/Mtr ———— BBAAAAAACCCC

RPM ————548585618652685715747778807836868905

Turns Open ———— 53.55.54.53.52.51.515.553.53

BkW — — — 0.45 0.48 0.52 0.60 0.64 0.70 0.78 0.82 0.90 0.93 1.00 1.08 1.15

1557.6

Sheave/Mtr ———BBAAAAAAACCCC

RPM — — — 522 562 599 631 664 694 725 756 784 815 845 874 906

Turns Open ———64.565.54 32.51.515.54.53.53

BkW — — — 0.48 0.52 0.57 0.63 0.67 0.75 0.82 0.85 0.93 1.00 1.08 1.15 1.20

1604.8

Sheave/Mtr ———BBAAAAAACCCCC

RPM — — — 537 576 612 643 676 705 736 763 793 823 850 880 908

Turns Open ———5.545.554321654.53.52.5

BkW — — — 0.52 0.57 0.60 0.67 0.75 0.78 0.85 0.93 1.00 1.05 1.12 1.20 1.23

1652.0

Sheave/Mtr ———BBAAAAAACCCCC

RPM — — — 551 589 622 655 685 716 746 776 802 829 858 886 913

Turns Open ———53.55.54.53.52.52165432.5

BkW — — 0.52 0.55 0.60 0.67 0.75 0.78 0.85 0.93 0.97 1.05 1.08 1.15 1.23 1.30

1699.2

Sheave/Mtr ——BBAAAAAACCCCCC

RPM — — 526 565 600 634 665 696 727 754 783 809 837 865 891 919

Turns Open ——64.5654321.565.54.5432.5

1746.4

BkW

Sheave/Mtr ——BBAAAAAACCCCCC

RPM — — 541 579 613 647 677 707 737 764 793 818 846 871 898 926

— — 0.55 0.63 0.67 0.70 0.78 0.85 0.93 0.97 1.00 1.08 1.15 1.23 1.30 1.38

Turns Open ——5.545.54.54321.565.54.53.532

BkW — 0.550.630.670.700.780.850.930.961.001.081.151.231.301.381.45

1793.6

Sheave/Mtr —BBBAAAAAACCCCCC

RPM — 519 554 591 626 659 688 718 746 774 802 829 855 879 905 931

Turns Open — 6 5 3.55.54.53.52.5 2 1 5.5 5 4.53.52.5 2

BkW — 0.590.630.700.780.850.890.931.001.081.151.231.301.381.451.52

1840.8

Sheave/Mtr —BBAAAAAAACCCCCC

RPM — 531 569 605 639 669 702 729 757 785 811 838 862 887 913 938

Turns Open — 5.5 4.5 6 5 4 3 2.5 1.5 1 5.5 5 4 3.5 2.5 2

BkW — 0.630.700.780.850.890.931.001.081.151.231.261.301.381.451.53

1888.0

Sheave/Mtr —BBAAAAAACCCCCCC

RPM — 545 582 618 651 683 710 739 767 794 821 845 870 895 920 945

Turns Open — 5 45.54.54 3 21.565.54.54 32.52

BkW 0.63 0.70 0.78 0.82 0.85 0.93 1.00 1.08 1.15 1.23 1.26 1.30 1.38 1.45 1.53 1.60

1935.2

Sheave/Mtr BBBAAAAAACCCCCCC

RPM 523 560 596 631 661 692 722 750 778 804 831 854 879 904 928 951

Turns Open 6 4.5 3.5 5.5 4.5 3.5 2.5 1.5 1 6 5 4.5 3.5 3 2 1.5

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High r pm/Standard Motor E—High rpm/Large Motor ESP — Exter nal Static Pressure

LEGEND NOTES:

Table 8 — 50VQP150 Blower Performance Data

EXTERNAL STATIC PRESSURE (Pa)

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

4. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/Standard Motor, E = High Rpm/Large Motor.

Page 25

AIRFLOW

(l/s)

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

BkW 0.70 0.74 0.78 0.85 0.93 1.00 1.08 1.15 1.19 1.23 1.30 1.38 1.45 1.53 1.60 1.68

1982.4

Sheave/Mtr BBAAAAAAACCCCCCC

RPM 538 574 609 640 673 703 733 761 788 812 838 863 888 912 934 958

Turns Open 5.54654321.515.5543.52.521.5

BkW 0.70 0.78 0.85 0.93 1.00 1.08 1.15 1.19 1.23 1.30 1.38 1.45 1.53 1.60 1.68 1.75

2029.6

Sheave/Mtr BBAAAAAACCCCCCCC

RPM 553 588 620 653 685 715 744 771 796 822 847 872 896 919 942 966

Turns Open 5 3.5 5.5 4.5 3.5 2.5 2 1 6 5.5 4.5 4 3 2.5 1.5 1

BkW 0.78 0.85 0.93 1.00 1.08 1.15 1.19 1.23 1.30 1.38 1.45 1.53 1.60 1.68 1.75 1.83

2076.8

Sheave/Mtr BBAAAAAACCCCCCCC

RPM 568 602 633 666 697 726 755 782 806 832 857 881 904 927 950 973

Turns Open 4.5 3 5 4 3.5 2.5 1.5 1 6 5 4.5 3.5 3 2 1.5 1

BkW 0.85 0.90 0.97 1.05 1.12 1.20 1.27 1.35 1.42 1.50 1.57 1.65 1.72 1.80 1.87 —

2124.0

Sheave/Mtr BAAAAAACCCCCCCC—

RPM 581 613 646 678 706 735 763 791 817 842 867 889 912 935 958 —

Turns Open 4 6 4.5 4 3 2 1.5 6 5.5 4.5 4 3 2.5 2 1.5 —

BkW 0.89 0.93 1.00 1.08 1.15 1.23 1.30 1.38 1.45 1.53 1.60 1.68 1.75 1.83 1.90 —

2171.2

Sheave/Mtr BAAAAAACCCCCCCC—

RPM 598 623 656 687 715 744 772 799 825 850 872 896 919 942 963 —

Turns Open 3.5 5.5 4.5 3.5 2.5 2 1 6 5.5 4.5 3.5 3 2 1.5 1 —

BkW 0.93 1.00 1.08 1.15 1.23 1.30 1.38 1.45 1.53 1.60 1.68 1.75 1.83 1.90 1.97 —

2218.4

Sheave/Mtr AAAAAAACCCCCCCC—

RPM 605 637 666 697 727 755 783 809 835 858 882 905 928 951 973 —

Turns Open 65432.51.515.5543.52.521.51—

BkW 1.00 1.08 1.15 1.23 1.30 1.38 1.45 1.53 1.60 1.68 1.75 1.83 1.90 1.97 2.05 —

2265.6

Sheave/Mtr AAAAAACCCCCCCCC—

RPM 618 647 678 708 738 766 793 819 844 867 891 914 937 959 980 —

Turns Open 5.54.5432165.54.5432.51.51.51—

BkW 1.08 1.15 1.23 1.30 1.38 1.45 1.53 1.60 1.68 1.75 1.83 1.90 1.97 2.05 2.12 —

2312.8

Sheave/Mtr AAAAAACCCCCCCCC—

RPM 631 662 690 720 749 777 803 827 852 877 900 923 946 966 988 —

Turns Open 5.5 4 3.5 2.5 1.5 1 6 5 4.5 3.5 3 2 1.5 1 1 —

BkW 1.15 1.23 1.30 1.38 1.45 1.53 1.60 1.68 1.75 1.83 1.90 1.97 2.05 2.12 — —

2360.0

Sheave/Mtr AAAAACCCCCCCCC——

RPM 642 672 702 731 760 785 811 837 862 886 909 932 953 975 — —

Turns Open 54321.565.54.5432.51.511——

BkW 1.23 1.30 1.38 1.45 1.53 1.60 1.68 1.75 1.83 1.90 1.97 2.05 2.12 — — —

2407.2

Sheave/Mtr AAAAACCCCCCCC———

RPM

655 685 714 743 769 798 822 847 872 896 917 940 962 — — —

Turns Open 4.5 3.5 2.5 1.5 1 6 5 4.5 3.5 3 2.5 1.5 1 — — —

BkW 1.30 1.38 1.45 1.53 1.60 1.68 1.75 1.83 1.90 1.97 2.05 2.12 2.24 — — —

2454.4

Sheave/Mtr A AA ACCCCCCCCE———

RPM 668 697 726 752 782 806 832 857 882 903 926 949 971 — — —

Turns Open 432.51.565.5543.52.5210———

BkW 1.38 1.45 1.53 1.60 1.68 1.75 1.83 1.90 1.97 2.05 2.12 2.20 2.31 — — —

2501.6

Sheave/Mtr A AA ACCCCCCCCE———

RPM 680 709 737 763 790 817 842 867 889 912 935 957 979 — — —

Turns Open 3.532165.54.54322C0———

BkW 1.45 1.53 1.60 1.68 1.75 1.83 1.90 1.97 2.05 2.12 2.20 2.31 — — — —

2548.8

Sheave/Mtr A AA ACCCCCCCE————

RPM 691 717 745 772 799 825 850 873 897 920 943 965 — — — —

Turns Open 3.5 2.5 1.5 1 5.5 5 4.5 3.5 3 2 1.5 0 — — — —

BkW 1.53 1.60 1.68 1.75 1.83 1.90 1.97 2.05 2.12 2.31 2.35 2.42 — — — —

2596.0

Sheave/Mtr A AACCCCCC EEE————

RPM 704 729 756 783 810 836 859 883 907 929 952 972 — — — —

Turns Open 3 2 1.5 6 5.5 5 4 3.5 2.5 1 0.5 0 — — — —

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High r pm/Standard Motor E—High rpm/Large Motor ESP — Exter nal Static Pressure

LEGEND NOTES:

Table 8 — 50VQP150 Blower Performance Data (cont)

EXTERNAL STATIC PRESSURE (Pa)

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

4. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/Standard Motor, E = High Rpm/Large Motor.

Page 26

AIRFLOW

(l/s)

BkW — — 0.23 0.30 0.26 0.38 0.45 0.48 0.51 0.60 0.63 0.66 0.75 0.78 — —

1510.4

1604.8

1699.2

1793.6

1888.0

1982.4

2076.8

2171.2

2265.6

2360.0

2454.4

2548.8

2643.2

2737.6

2832.0

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High r pm/Standard Motor ESP — Exter nal Static Pressure

Sheave/Mtr ——BBBAAAAACCCC——

RPM — — 388 437 482 527 564 599 630 663 690 716 744 767 — —

Turns Open — — 6 4 2.5 5.5 4.5 3.5 2.5 1.5 3.5 2.5 2 1 — —

BkW — — 0.25 0.32 0.30 0.41 0.48 0.51 0.55 0.63 0.67 0.71 0.80 0.84 — —

Sheave/Mtr ——BBBAAAAACCCC——

RPM — — 392 440 485 529 566 601 633 666 693 720 747 771 — —

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

BkW — — 0.27 0.34 0.34 0.44 0.50 0.54 0.59 0.67 0.71 0.76 0.84 — — —

Sheave/Mtr ——BBBAAAAACCC———

RPM — — 395 444 488 530 568 603 636 668 697 723 751 — — —

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

BkW — — 0.29 0.37 0.39 0.47 0.53 0.57 0.62 0.70 0.76 0.81 0.89 — — —

Sheave/Mtr ——BBBAAAAACCC———

RPM — — 399 447 491 532 571 606 639 671 700 727 754 — — —

Turns Open ——5.53.5254321321.5———

BkW — — 0.32 0.39 0.43 0.50 0.56 0.60 0.66 0.74 0.80 0.86 0.94 — — —

Sheave/Mtr ——BBBAAAAACCC———

RPM — — 403 450 493 534 573 608 641 673 703 730 757 — — —

Turns Open —— 53.52 5 4 3 2 12.521.5———

BkW — 0.24 0.36 0.43 0.51 0.55 0.61 0.66 0.73 0.81 0.88 0.96 1.03 — — —

Sheave/Mtr —BBBBAAAAACCC———

RPM — 362 410 457 499 537 577 612 647 678 710 737 764 — — —

Turns Open — 6 53.52 53.53 2 12.52 1 ———

BkW — 0.34 0.42 0.47 0.51 0.58 0.66 0.73 0.81 0.88 0.96 1.03 1.11 — — —

Sheave/Mtr —BBBBAAAACCCC———

RPM — 375 424 467 507 548 584 621 653 684 716 743 772 — — —

Turns Open — 6 4.5 3 1.5 4.5 3.5 2.5 1.5 3.5 2.5 1.5 1 — — —

BkW —0.360.430.510.580.660.730.810.880.961.031.11————

Sheave/Mtr —BBBBAAAACCC————

RPM —387435476518555590627659692721751————

Turns Open —5.54 3 1.54.53.52.51.532.51.5————

BkW —0.430.510.580.660.730.810.880.961.031.111.18————

Sheave/Mtr —BBBAAAAACCC————

RPM —403446485527563600633665697726756————

Turns Open —5.542.55.54.53 2.51 3 21.5————

BkW 0.420.460.510.580.660.730.810.880.961.111.181.26————

Sheave/Mtr BBBBAAAAACCC————

RPM 362411452495532567604636670700729759————

Turns Open 6 53.525.54 3 2 1 3 2 1 ————

BkW 0.430.510.640.720.790.870.941.021.091.171.241.32————

Sheave/Mtr

RPM 377420460500536570606638671701729759————

Turns Open 6 4.53.52 5 4 3 2 42.52 1 ————

BkW 0.490.570.640.720.790.880.961.031.111.181.261.33————

Sheave/Mtr BBBBAAAACCCC————

RPM 381423463504539576609641674703734762————

Turns Open 5.54.531.5 53.52.523.52.51.51 ————

BkW 0.510.580.660.730.810.961.031.111.181.261.33—————

Sheave/Mtr BBBBAAAACCC—————

RPM 390431474510545581613647677706737—————

Turns Open 5.54 31.553.52.51.53.52.51.5—————

BkW 0.580.660.730.810.880.961.111.181.261.331.41—————

Sheave/Mtr BBBAAAAACCC—————

RPM 399440481517551586618651681710740—————

Turns Open 5 42.55.54.53.52.51.53.521.5—————

BkW 0.640.730.810.880.961.031.111.261.331.411.56—————

Sheave/Mtr BBBAAAAACCC—————

RPM 412455492526563595628658687718745—————

Turns Open 5 3.525.54 3 2 1 3 2 1 —————

LEGEND NOTES:

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

BBBBAAAACCCC————

Table 9 — 50VQP168 Blower Performance Data

EXTERNAL STATIC PRESSURE (Pa)

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

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

Page 27

AIRFLOW

(l/s)

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

BkW — — 0.27 0.34 0.34 0.44 0.50 0.54 0.59 0.67 0.71 0.76 0.84 — — —

1699.2

Sheave/Mtr ——BBBAAAAACCC———

RPM — — 395 444 488 530 568 603 636 668 697 723 751 — — —

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

BkW — — 0.29 0.37 0.39 0.47 0.53 0.57 0.62 0.70 0.76 0.81 0.89 — — —

1793.6

Sheave/Mtr ——BBBAAAAACCC———

RPM — — 399 447 491 532 571 606 639 671 700 727 754 — — —

Turns Open ——5.542.55.54321321.5———

BkW — — 0.32 0.39 0.43 0.50 0.56 0.60 0.66 0.74 0.80 0.86 0.94 — — —

1888.0

Sheave/Mtr ——BBBAAAAACCC———

RPM — — 403 450 493 534 573 608 641 673 703 730 757 — — —

Turns Open ——5.53.52543212.521.5———

BkW — — 0.36 0.43 0.51 0.55 0.61 0.66 0.73 0.81 0.88 0.96 1.03 — — —

1982.4

Sheave/Mtr ——BBBAAAAACCC———

RPM — — 410 457 499 537 577 612 647 678 710 737 764 — — —

Turns Open —— 53.52 53.531.512.52 1 ———

BkW — 0.340.420.470.510.580.660.730.810.880.961.031.11 — — —

2076.8

Sheave/Mtr —BBBBAAAACCCC———

RPM — 375 424 467 507 548 584 621 653 684 716 743 772 — — —

Turns Open — 6 4.5 3 1.5 5 3.5 2.5 1.5 3.5 2.5 1.5 1 — — —

BkW — 0.360.430.510.580.660.730.810.880.961.031.11 — — — —

2171.2

Sheave/Mtr —BBBAAAAACCC————

RPM — 387 435 476 518 555 590 627 659 692 721 751 — — — —

Turns Open —64364.53.52.51.532.51.5————

BkW — 0.430.510.580.660.730.810.880.961.031.111.18 — — — —

2265.6

Sheave/Mtr —BBBAAAAACCC————

RPM — 403 446 485 527 563 600 633 665 697 726 756 — — — —

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

BkW 0.42 0.46 0.51 0.58 0.66 0.73 0.81 0.88 0.96 1.11 1.18 1.26 — — — —

2360.0

Sheave/Mtr BBBBAAAAACCC————

RPM 362 411 452 495 532 567 604 636 670 700 729 759 — — — —

Turns Open 653.525.54321321————

BkW 0.43 0.51 0.64 0.72 0.79 0.87 0.94 1.02 1.09 1.17 1.24 1.32 — — — —

2454.4

Sheave/Mtr BBBBAAAACCCC————

RPM 377 420 460 500 536 570 606 638 671 701 729 759 — — — —

Turns Open 64.53.5254323.52.521————

BkW 0.49 0.57 0.64 0.72 0.79 0.88 0.96 1.03 1.11 1.18 1.26 1.33 — — — —

2548.8

Sheave/Mtr BBBAAAAACCCC————

RPM 381 423 463 504 539 576 609 641 674 703 734 762 — — — —

Turns Open 64.53 6 53.53 23.52.52 1 ————

BkW 0.51 0.58 0.66 0.73 0.81 0.96 1.03 1.11 1.18 1.26 1.33 — — — — —

2643.2

Sheave/Mtr BBBAAAAACCC—————

RPM 390 431 474 510 545 581 613 647 677 706 737 — — — — —

Turns Open 5.5 4.5 3 6 4.5 3.5 3 1.5 3.5 2.5 1.5 — — — — —

BkW 0.58 0.66 0.73 0.81 0.88 0.96 1.11 1.18 1.26 1.33 1.41 — — — — —

2737.6

Sheave/Mtr BBBAAAAACCC—————

RPM 399 440 481 517 551 586 618 651 681 710 740 — — — — —

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

BkW 0.64 0.73 0.81 0.88 0.96 1.03 1.11 1.26 1.33 1.41 1.56 — — — — —

2832.0

Sheave/Mtr BBBAAAAACCC—————

RPM 412 455 492 526 563 595 628 658 687 718 745 — — — — —

Turns Open 53.525.54321321.5—————

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High rpm/Standard Motor ESP — External Static Pressure

LEGEND NOTES:

Table 10 — 50VQP192 Blower Performance Data

EXTERNAL STATIC PRESSURE (Pa)

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

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

Page 28

AIRFLOW

(l/s)

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

BkW 0.66 0.79 0.88 0.96 1.03 1.11 1.26 1.33 1.41 1.48 1.56 — — — — —

2926.4

Sheave/Mtr BBBAAAAACCC—————

RPM 421 459 499 533 569 600 633 663 691 722 749 — — — — —

Turns Open 4.53.52543212.521.5—————

BkW 0.73 0.81 0.96 1.03 1.11 1.26 1.33 1.41 1.48 1.56 1.71 — — — — —

3020.8

Sheave/Mtr B B A A A A A C C C C —————

RPM 441 478 513 549 581 614 644 672 703 730 759 — — — — —

Turns Open 42.564.53.531.53.52.52 1 —————

BkW 0.81 0.96 1.03 1.11 1.24 1.33 1.41 1.48 1.56 1.71 1.84 — — — — —

3115.2

Sheave/Mtr B B A A A A A C C C C —————

RPM 456 495 529 561 595 625 656 685 712 741 767 — — — — —

Turns Open 3.525.54 32.513.52.52 1 —————

BkW 0.94 1.03 1.11 1.18 1.26 1.41 1.48 1.56 1.71 1.78 1.86 — — — — —

3209.6

Sheave/Mtr B A A A A A A C C C C —————

RPM 471 506 539 574 604 633 664 692 721 747 773 — — — — —

Turns Open 3653.53213221—————

BkW 0.96 1.11 1.18 1.26 1.41 1.48 1.56 1.71 1.84 1.93 — — — — — —

3304.0

Sheave/Mtr B A A A A A A C C C ——————

RPM 486 520 555 586 615 647 674 704 730 756 — — — — — —

Turns Open 2.55.54.532.51.51 3 21.5——————

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High rpm/Standard Motor ESP — External Static Pressure

LEGEND NOTES:

Table 10 — 50VQP192 Blower Performance Data (cont)

EXTERNAL STATIC PRESSURE (Pa)

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

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

Page 29

AIRFLOW

(l/s)

BkW — — — 0.39 0.45 0.54 0.60 0.69 0.75 0.84 0.90 0.96 1.05 1.11 1.20 1.26

2171.2

2265.6

2360.0

2454.4

2548.8

2643.2

2737.6

2832.0

2926.4

3020.8

3115.2

3209.6

3304.0

3398.4

3492.8

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High r pm/Standard Motor ESP — Exter nal Static Pressure

Sheave/Mtr ———BBBAAA AAACCCC

RPM — — — 423 466 503 543 580 616 649 682 712 742 770 797 822

Turns Open ——— 6 53.56 5 4 3 2 14.54 32.5

BkW — — — 0.45 0.54 0.60 0.69 0.75 0.84 0.90 1.05 1.05 1.14 1.20 1.35 1.41

Sheave/Mtr ———BBBAAA AAACCCC

RPM — — — 439 481 517 555 592 626 659 691 722 751 779 805 831

Turns Open — — — 6 4.5 3 5.5 4.5 3.5 2.5 1.5 1 4.5 3.5 3 2

BkW — — — 0.51 0.60 0.66 0.75 0.81 0.90 0.96 1.11 1.20 1.26 1.35 1.41 1.50

Sheave/Mtr ———BBAAAA AACCCCC

RPM — — — 455 496 530 567 603 637 669 701 730 759 787 813 839

Turns Open ———5.54654321.5543.52.51.5

BkW — — 0.51 0.60 0.66 0.75 0.81 0.90 0.96 1.11 1.20 1.26 1.35 1.41 1.50 1.56

Sheave/Mtr ——BBBAAA AAACCCCC

RPM — — 430 471 506 544 579 614 647 679 710 739 768 795 822 847

Turns Open ——64.53.5653.532154321.5

BkW — — 0.60 0.66 0.75 0.81 0.90 0.96 1.11 1.20 1.26 1.35 1.41 1.50 1.56 1.65

Sheave/Mtr ——BBBAAA AACCCCCC

RPM — — 446 486 520 556 591 625 657 689 719 748 776 803 830 855

Turns Open — — 6 4 3 5.5 4.5 3.5 2.5 1.5 5.5 4.5 3.5 3 2 1

BkW — 0.60 0.66 0.75 0.81 0.90 0.96 1.05 1.20 1.26 1.35 1.41 2.00 2.08 2.20 2.40

Sheave/Mtr —BBBAAA AAACCCCCC

RPM — 421 462 501 534 569 603 636 668 698 728 757 785 812 838 860

Turns Open — 6 5 3.5 6 5 4 3 2 1.5 5 4 2.618 1.87 1.122 0.748

BkW — 0.66 0.75 0.81 0.90 0.96 1.05 1.11 1.26 1.35 1.41 1.50 2.08 2.28 2.40 2.48

Sheave/Mtr —BBBAAA AAACCCCCC

RPM — 438 478 515 547 582 615 647 678 708 737 765 793 819 845 868

Turns Open — 6 4.5 3 5.5 4.5 3.5 3 2 1 5 4 2.244 1.87 1.122 0.748

BkW — 0.73 0.81 0.88 0.96 1.03 1.11 1.26 1.33 1.41 1.56 1.63 2.28 2.38 2.48 2.68

Sheave/Mtr —BBBAAA AAACCCCCC

RPM — 453 491 529 563 595 626 659 689 717 745 774 801 826 851 877

Turns Open — 5.5 4 2.5 5.5 4.5 3.5 2.5 1.5 1 4.5 3.5 2.244 1.496 1.122 0.374

BkW 0.73 0.81 0.88 0.96 1.03 1.11 1.26 1.33 1.41 1.56 1.63 1.71 2.38 2.48 2.68 2.88

Sheave/Mtr B BB AAA AAACCCCCCC

RPM 431 469 504 542 575 607 637 670 699 726 754 783 809 834 859 884

Turns Open 6 4 3.5 6 5 4 3 2 1.5 5.5 4.5 3.5 1.87 1.496 0.748 0.374

BkW 0.81 0.88 0.96 1.03 1.11 1.26 1.33 1.41 1.56 1.63 1.71 1.86 2.58 2.68 2.88 3.06

Sheave/Mtr B BB AAA AAACCCCCCC

RPM 448 485 520 556 588 619 649 680 708 736 765 791 817 841 868 891

Turns Open 5.5 4.5 3 5.5 4.5 3.5 3 2 1 5 4 3 2.5 1.5 1 0.5

BkW 0.88 0.96 1.03 1.11 1.26 1.33 1.41 1.56 1.63 1.71 1.86 1.93 2.68 2.88 2.98 3.08

Sheave/Mtr B BA AAA AAACCCCCCC

RPM 464 500 537 570 601 631 662 691 718 745 774 799 616 635 654 671

Turns Open 5 4 6 5 4.5 3.5 2.5 1.5 1 4.5 3.5 3 2 1.5 0.5 0

BkW 0.96 1.03 1.11 1.26 1.33 1.41 1.56 1.63 1.71 1.86 1.93 2.00 2.88 2.98 3.08 —

Sheave/Mtr B BA AAA AACCCCCCC—

RPM 480 515 551 583 613 642 674 701 728 754 783 808 623 641 660 —

Turns Open 4.535.54.54 3 21.554.53.52.52 10.5—

BkW 1.03 1.11 1.26 1.33 1.41 1.56 1.63 1.71 1.86 1.93 2.00 2.15 3.08 3.18 3.28 —

Sheave/Mtr B BA AAA AACCCCCCC—

RPM 496 530 565 596 625 654 684 711 738 766 792 816 629 649 666 —

Turns Open 4 2.5 5.5 4 3.5 2.5 1.5 1 5 4 3 2.5 1.5 1 0 —

BkW 1.11 1.26 1.33 1.41 1.56 1.63 1.71 1.86 2.00 2.08 2.15 2.30 3.18 3.28 3.48 —

Sheave/Mtr B AA AAA ACCCCCCCC—

RPM 511 544 578 608 637 668 695 722 748 776 800 825 635 654 671 —

Turns Open 3.5 6 5 4 3 2 1.5 5.5 4.5 3.5 3 2 1.5 0.5 0 —

BkW 1.26 1.33 1.41 1.56 1.71 1.78 1.86 2.00 2.08 2.15 2.30 2.45 3.38 3.48 — —

Sheave/Mtr BAAAAAACCCCCCC——

RPM 526 561 592 621 649 679 706 732 758 785 809 833 857 882 — —

Turns Open 3 5.5 4.5 3.5 3 2 1 5 4 3.5 2.5 2 1 0.5 — —

LEGEND

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

Table 11 — 50VQP240 Blower Performance Data

EXTERNAL STATIC PRESSURE (Pa)

NOTES:

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

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

Page 30

AIRFLOW

(l/s)

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

BkW 1.33 1.41 1.56 1.63 1.71 1.86 2.00 2.08 2.15 2.30 2.45 2.53 2.60 2.75 — —

3587.2

Sheave/Mtr AAAAAAACCCCCCC——

RPM 544 575 605 633 661 691 717 742 767 794 818 842 867 890 — —

Turns Open 65432.51.514.5432.51.510——

BkW 1.41 1.56 1.71 1.78 1.86 2.00 2.15 2.23 2.30 2.45 2.60 2.68 2.75 2.90 — —

3681.6

Sheave/Mtr AAAAAACCCCCCCC——

RPM 555 589 618 646 676 702 728 753 779 803 827 850 875 898 — —

Turns Open 5.5 4.5 3.5 2.5 2 1 5 4.5 3.5 2.5 2 1 0.5 0 — —

BkW 1.56 1.63 1.71 1.86 2.00 2.15 2.23 2.30 2.45 2.60 2.68 2.75 2.90 3.05 — —

3776.0

Sheave/Mtr AAAAAACCCCCCCC——

RPM 572 601 630 657 686 712 737 762 789 812 836 859 883 905 — —

Turns Open 5 4 3 2.5 1.5 1 4.5 4 3 2.5 1.5 1 0.5 0 — —

BkW 1.71 1.78 1.86 2.00 2.15 2.23 2.30 2.45 2.60 2.75 2.83 2.90 3.05 — — —

3870.4

Sheave/Mtr A AA AACCCCCCCC———

RPM 589 617 645 672 700 726 751 775 801 824 847 872 894 — — —

Turns Open 4.53.532154.53.52.521.50.50———

BkW 1.86 1.93 2.00 2.15 2.30 2.38 2.45 2.60 2.75 2.99 3.05 3.13 3.20 — — —

3964.8

Sheave/Mtr A AA AACCCCCCCC———

RPM 605 633 660 689 714 739 763 790 813 836 858 882 904 — — —

Turns Open 432.51.515432.51.510.50———

BkW 1.93 2.00 2.15 2.30 2.45 2.53 2.60 2.75 2.99 3.05 3.20 3.35 — — — —

4059.2

Sheave/Mtr A AA ACCCCCCCC————

RPM 621 649 675 703 728 752 776 802 827 847 869 893 — — — —

Turns Open 3.5 2.5 2 1 5 4.5 3.5 2.5 2 1.5 1 0 — — — —

BkW 2.08 2.15 2.30 2.45 2.60 2.75 2.83 2.99 3.05 3.20 3.35 3.50 — — — —

4153.6

Sheave/Mtr A AACCCCCCCCC————

RPM 637 664 690 717 742 766 791 814 836 858 882 904 — — — —

Turns Open 3 21.55.54.54 32.52 10.50 ————

BkW 2.23 2.30 2.45 2.60 2.75 2.90 3.05 3.13 3.20 3.35 3.50 — — — — —

4248.0

Sheave/Mtr A AACCCCCCCC—————

RPM 653 679 707 731 755 779 804 826 848 870 893 — — — — —

Turns Open 2.51.51543.5321.510—————

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High r pm/Standard Motor ESP — Exter nal Static Pressure

LEGEND

Table 11 — 50VQP240 Blower Performance Data (cont)

EXTERNAL STATIC PRESSURE (Pa)

NOTES:

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

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

Page 31

AIRFLOW

(l/s)

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

BkW —————0.690.750.840.991.051.141.291.441.591.741.88

2643.2

Sheave/Mtr ————— BBBAAAAAACC

RPM —————533572606640676712746783821859901

Turns Open —————5.54 3 64.53.52 1 01.50.5

BkW —————0.750.840.901.051.141.201.351.501.621.801.94

2737.6

Sheave/Mtr ————— BBBAAAAACCC

RPM —————544582619652686719754789823860902

Turns Open ————— 5 42.55.54 3 20.52.51.5 0

BkW ————0.750.840.901.051.141.201.351.501.591.651.882.03

2832.0

Sheave/Mtr ———— BBBBAAAAACCC

RPM ————521558595628663697728762796828863903

Turns Open ———— 64.532542.51.50.5210

BkW ————0.840.901.051.111.201.291.441.561.651.801.942.09

2926.4

Sheave/Mtr ———— BBBAAAAAACCC

RPM ————536572608640674705737769799832866904

Turns Open ————5.54 3 64.53.52.51.50 2 1 0

BkW ————0.900.991.111.201.351.411.501.711.801.942.09—

3020.8

Sheave/Mtr ———— BBBAAAAAACC—

RPM ————548585618652685715747778807836868—

Turns Open ———— 53.52.55.54321021—

BkW — — — 0.90 0.96 1.05 1.20 1.29 1.41 1.56 1.65 1.80 2.48 2.68 2.88 —

3115.2

Sheave/Mtr ———BBBAAAAAACCC—

RPM — — — 522 562 599 631 664 694 725 756 784 815 845 874 —

Turns Open ———64.5365431.51210.5—

BkW — — — 0.96 1.05 1.14 1.26 1.35 1.50 1.65 1.71 1.86 2.68 2.88 3.08 —

3209.6

Sheave/Mtr ———BBBAAAAAACCC—

RPM — — — 537 576 612 643 676 705 736 763 793 823 850 880 —

Turns Open — — — 5.5 4 2.5 5.5 4.5 3.5 2.5 1.5 0.5 2 1 0.5 —

BkW — — — 1.05 1.14 1.20 1.35 1.50 1.56 1.71 1.86 2.00 2.80 3.00 3.20 —

3304.0

Sheave/Mtr ———BBBAAAAAACCC—

RPM — — — 551 589 622 655 685 716 746 776 802 829 858 886 —

Turns Open ———53.525432101.510—

BkW — — 1.05 1.11 1.20 1.35 1.50 1.56 1.71 1.86 1.94 2.09 2.88 3.08 3.28 —

3398.4

Sheave/Mtr ——BBBAAAAAAACCC—

RPM — — 526 565 600 634 665 696 727 754 783 809 837 865 891 —

Turns Open ——64.5365432101.510—

BkW — — 1.11 1.26 1.35 1.41 1.56 1.71 1.86 1.94 2.00 2.15 3.08 3.28 3.48 —

3492.8

Sheave/Mtr ——BBBAAAAAACCCC—

RPM — — 541 579 613 647 677 707 737 764 793 818 846 871 898 —

Turns Open

— — 5 4 2.5 5.5 4.5 3.5 2.5 1.5 0.5 2.5 1.5 0.5 0 —

BkW — — 1.26 1.33 1.41 1.56 1.71 1.86 1.93 2.00 2.15 2.30 3.28 3.48 3.68 —

3587.2

Sheave/Mtr ——BBBAAAAAACCCC—

RPM — — 554 591 626 659 688 718 746 774 802 829 640 657 677 —

Turns Open ——53.5254321021.50.50—

BkW — 1.181.261.411.561.711.781.862.002.152.302.453.483.68 — —

3681.6

Sheave/Mtr —BBBAAAAAAACCC——

RPM — 531 569 605 639 669 702 729 757 785 811 838 645 663 — —

Turns Open —64.53653.53210210.5——

BkW — 1.261.411.561.711.781.862.002.152.302.452.533.483.68 — —

3776.0

Sheave/Mtr —BBBAAAAAACCCC——

RPM — 545 582 618 651 683 710 739 767 794 821 845 651 669 — —

Turns Open — 5 4 2.5 5.5 4.5 3.5 2.5 1.5 0.5 2.5 1.5 1 0 — —

BkW 1.26 1.41 1.56 1.63 1.71 1.86 2.00 2.15 2.30 2.45 2.53 2.60 3.68 3.88 — —

3870.4

Sheave/Mtr BBBBAAAAAACCCC——

RPM 523 560 596 631 661 692 722 750 778 804 831 854 657 676 — —

Turns Open 64.53.5254321021.50.50——

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High r pm/Standard Motor E—High rpm/Large Motor ESP — Exter nal Static Pressure

LEGEND

Table 12 — 50VQP300 Blower Performance Data

EXTERNAL STATIC PRESSURE (Pa)

NOTES:

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

4. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/ Standard Motor, E = High Rpm/Large Motor.

Page 32

AIRFLOW

(l/s)

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

BkW 1.41 1.48 1.56 1.71 1.86 2.00 2.15 2.30 2.38 2.45 2.60 2.75 3.88 4.08 — —

3964.8

Sheave/Mtr BBBAAAAAAACCCC——

RPM 538 574 609 640 673 703 733 761 788 812 838 863 888 912 — —

Turns Open 5.54364.53.52.51.510210.50——

BkW 1.41 1.56 1.71 1.86 2.00 2.15 2.30 2.38 2.45 2.60 2.75 2.90 3.05 — — —

4059.2

Sheave/Mtr BBBAAAAAACCCC———

RPM 553 588 620 653 685 715 744 771 796 822 847 872 896 — — —

Turns Open 5 3.5 2.5 5.5 4 3 2.5 1.5 0.5 2.5 1.5 1 0 — — —

BkW 1.56 1.71 1.86 2.00 2.15 2.30 2.38 2.45 2.60 2.75 2.90 3.05 3.20 — — —

4153.6

Sheave/Mtr BBAAAAAAACCCC———

RPM 568 602 633 666 697 726 755 782 806 832 857 881 904 — — —

Turns Open 4.53654321021.50.50———

BkW 1.71 1.80 1.94 2.09 2.24 2.39 2.54 2.69 2.84 2.99 3.14 3.29 — — — —

4248.0

Sheave/Mtr BBAAAAAACCCC————

RPM 581 613 646 678 706 735 763 791 817 842 867 889 — — — —

Turns Open 4 2.5 5.5 4.5 3.5 2.5 1.5 1 2.5 2 1 0 — — — —

BkW 1.78 1.86 2.00 2.15 2.30 2.45 2.60 2.75 2.90 3.05 3.20 3.35 — — — —

4342.4

Sheave/Mtr BBAAAAAACCCC————

RPM 598 623 656 687 715 744 772 799 825 850 872 896 — — — —

Turns Open 3.5 2.5 5 4 3 2.5 1 0.5 2 1.5 1 0 — — — —

BkW 1.86 2.00 2.15 2.30 2.45 2.60 2.75 2.90 3.05 3.20 3.35 — — — — —

4436.8

Sheave/Mtr BAAAAAAACCC—————

RPM 605 637 666 697 727 755 783 809 835 858 882 — — — — —

Turns Open 3654321021.50.5—————

BkW 2.00 2.15 2.30 2.45 2.60 2.75 2.90 3.05 3.20 3.35 3.50 — — — — —

4531.2

Sheave/Mtr BAAAAAACCCC—————

RPM 618 647 678 708 738 766 793 819 844 867 891 — — — — —

Turns Open 2.5 5.5 4.5 3.5 2.5 1.5 0.5 2.5 1.5 1 0.5 — — — — —

BkW 2.15 2.30 2.45 2.60 2.75 2.90 3.05 3.20 3.35 3.50 3.65 — — — — —

4625.6

Sheave/Mtr AAAAAAACCCC—————

RPM 631 662 690 720 749 777 803 827 852 877 900 — — — — —

Turns Open 654321021.50.50—————

BkW 2.30 2.45 2.60 2.75 2.90 3.05 3.20 3.35 3.50 3.65 — — — — — —

4720.0

Sheave/Mtr AAAAAAACCC——————

RPM 642 672 702 731 760 785 811 837 862 886 — — — — — —

Turns Open 64.53.52.52 1 0 2 10.5——————

BkW 2.45 2.60 2.75 2.90 3.05 3.20 3.35 3.50 3.65 3.80 — — — — — —

4814.4

Sheave/Mtr AAAAAACCCE——————

RPM 655 685 714 743 769 798 822 847 872 896 — — — — — —

Turns Open 5.5 4 3 2 1.5 0.5 2.5 1.5 0.5 0 — — — — — —

BkW 2.602.752.903.053.203.353.503.653.80———————

4908.8

Sheave/Mtr AAAAAACCE

RPM 668697726752782806832857882———————

Turns Open 5 42.52 1 0 2 10.5———————

BkW 2.752.903.053.203.353.503.653.803.95———————

5003.2

Sheave/Mtr A A A A A C C E E ———————

RPM 680709737763790817842867889———————

Turns Open 4.53.52.51.50.52.51.51 0 ———————

BkW 2.903.053.203.353.503.653.803.954.10———————

5097.6

Sheave/Mtr A A A A A C E E E ———————

RPM 691717745772799825850873897———————

Turns Open 4321021.50.50———————

BkW 3.053.203.353.503.653.803.954.10————————

5192.0

Sheave/Mtr AAAAAEEE————————

RPM 704729756783810836859883————————

Turns Open 3.52.51.51 01.510.5————————

LEGEND

A—Standard rpm/Standard Motor B—Low rpm/Standard Motor bhp — Brake Horsepower C—High rpm/Standard Motor E—High rpm/Large Motor ESP — External Static Pressure

Table 12 — 50VQP300 Blower Performance Data (cont)

EXTERNAL STATIC PRESSURE (Pa)

———————

NOTES:

1. Unit is factory shipped with standard static sheave and drive at 2.5 turns open. Other speeds require field selection.

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

3. All airflow is rated at lowest voltage. If unit is dual voltage rated, data is based on lowest voltage.

4. A = Standard Rpm/Standard Motor, B = Low Rpm/Standard Motor, C = High Rpm/ Standard Motor, E = High Rpm/Large Motor.

Page 33

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. 27)

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. 27.

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 lock out on the FP1 fault after one try.

Deluxe D Control Jumper Settings (See Fig. 28)

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. 28.

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 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.

used for heating as long as the FP1 is above 10.0 C. The 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. 28.

Switches 1 to 3 Accessory 1 relay options. See Table 13 for DIP switch combinations.

Switches 4 to 6 of Accessory 2 relay options. See Table 14 for DIP switch combinations.

— Not used.

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

— These DIP switches provide selection of

— These DIP switches provide selection

— 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-

Page 34

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 13 — DIP Switch Block S2 —

Accessory 1 Relay Options

ACCESSORY 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 14 — DIP Switch Block S2 —

Accessory 2 Relay Options

ACCESSORY 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.

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.

The following accessory relay settings are applica-

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.

START-UP

Use the procedure outlined below to initiate proper unit

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

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 start and operate in an ambient of 7.2 C with entering-air at 4.4 C, enteringwater at –6.7 C and with both air and water at the flow rates used.

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.

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.

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 10 to 38 C dry bulb. Loop water temperature entering the heat pumps should be between 10 and 49 F.

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 15.

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.

Page 35

Table 15 — 50VQP Unit Operating Limits

AIR LIMITS COOLING (C) HEATING (C) Minimum Ambient Air db 10 10 Rated Ambient Air db 27 20 Maximum Ambient Air db 38 29 Minimum Return Air db/wb 18/15 16 Maximum Return Air db/wb 43/28 29

WATER LIMITS Standard Unit Minimum Entering Water* 10 16 Maximum Entering Water 49 43 Extended Range Unit† Minimum Entering Water* –1 –6.7 Maximum Entering Water 49 43

LEGEND

db — Dry Bulb wb — Wet Bulb

*Requires optional insulation package when operating below the

dew point.

†With antifreeze, optional extended range insulation and low tem-

perature cutout jumper clipped for antifreeze.

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 com-

pressor 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 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 P/T plugs. See Table 16. 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.

4. Check the temperature of both supply and discharge wa-

ter. If temperature is within acceptable range, proceed. If temperature is outside the range, check the cooling refrigerant pressures.

5. Check air temperature drop across the coil when com-

pressor is operating. Air temperature drop should be between 8 and 14 C.

Table 16 — Water Temperature Change

Through Heat Exchanger

WATER FLOW RATE (GPM)

For Closed Loop: Ground Source or Cooling/Boiler Systems at 3.9 L/m per kW

For Open Loop: Ground Water Systems at

2.0 L/m per kW

COOLING

RISE (C)

Min Max Min Max

5.0 6.7 2.2 6.1

10.0 12.8 3.9 11.1

HEATING DROP (C)

Unit Start-Up 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. If temperature is within acceptable range, proceed. If temperature is outside the range, check the heating refrigerant pressures.

5. Once the unit has begun to run, check for warm air delivery at the unit grille.

6. Check air temperature rise across the coil when compressor is operating. Air temperature rise should be between 11° C and 17° C after 15 minutes at load.

7. 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 17. 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

To avoid possible injury or death due to electrical shock, open the power supply disconnect switch and secure it in an open position before flushing system.

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. Follow the steps below to properly flush the loop:

1. Verify power is off.

2. Fill loop with water from hose through flush cart before using flush cart pump to ensure an even fill. Do not allow the water level in the flush cart tank to drop below the pump inlet line to prevent air from filling the line.

3. Maintain a fluid level in the tank above the return tee to avoid air entering back into the fluid.

4. Shutting off the return valve that connects into the flush cart reservoir will allow 345 kPa surges to help purge air pockets. This maintains the pump at 345 kPa.

5. To purge, keep the pump at 345 kPa until maximum pumping pressure is reached.

6. Open the return valve to send a pressure surge through the loop to purge any air pockets in the piping system.

7. A noticeable drop in fluid level will be seen in the flush cart tank. This is the only indication of air in the loop.

Page 36

Table 17 — Coaxial Water Pressure Drop

50VQP

UNIT

SIZE

084

096

120

150

168

192

240

300

L/s

0.66 16.5 13.8 8.3 7.6

1.00 37.9 31.7 23.4 20.7

1.32 63.4 54.4 42.7 39.3

0.76 26.2 21.4 15.8 13.8

1.13 55.1 46.9 36.5 33.1

1.51 89.6 77.2 63.4 59.3

0.95 14.5 11.7 8.3 6.9

1.42 36.5 30.3 24.1 22.1

1.89 64.8 55.8 46.2 42.7

1.20 18.6 14.5 10.3 9.0

1.76 42.7 35.8 28.2 25.5

2.39 75.8 65.5 53.1 49.6

1.32 18.6 15.2 9.6 8.3

1.98 42.0 35.8 26.2 23.4

2.65 71.7 61.3 47.5 44.1

1.51 28.9 24.1 17.9 15.8

2.27 62.0 52.4 41.3 37.9

1.89 100.6 86.8 71.0 66.1

2.84 16.5 13.1 9.0 7.6

3.78 40.7 33.8 26.9 24.8

2.39 72.3 63.4 51.7 48.2

3.53 21.4 16.5 11.7 10.3

4.79 48.2 40.7 31.7 28.9

3.78 85.4 73.7 59.9 55.8

PRESSURE DROP (kPa)

–1 C 10 C 21 C 32 C

NOTE: If air is purged from the system while using a 250 mm PVC flush tank, only a 25 to 50 mm level drop will be noticed since liquids are incompressible. If the level drops more than this, flushing should continue since air is still being compressed in the loop. If level is less than 25 to 50 mm, reverse the flow.

8. Repeat this procedure until all air is purged.

9. 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. Pres-

sures 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 350 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.

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) Calculate the total volume of fluid in the piping system. See Table 18. Use the percentage by volume in

Table 19 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. .

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.

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.

Table 18 — 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.

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] 11/2 IPS SCH40 10.9 [41.3] 2 IPS SCH40 17.0 [64.4]

Table 19 — Antifreeze Percentages by Volume

ANTIFREEZE

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

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

MINIMUM TEMPERATURE FOR FREEZE

–12.2 –9.4 –6.7 –3.9

PROTECTION (C)

38 30 22 15

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.

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

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

Page 37

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

48.9 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 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 48.9 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.

COMPLETE C AND DELUXE D BOARD

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 power 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 20-22. 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.

Page 38

Table 20 — 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 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

LEGEND

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 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

Table 21 — Complete C Control LED Code and

Fault Descriptions

LED

CODE

1 No fault in memory There has been no fault since the

2 High-Pressure

3 Low-Pressure Switch LP open for 30 continuous seconds

4 Freeze Protection

5 Freeze Protection Air

6 Condensate overflow Sense overflow (grounded) for 30

(Autoreset)

8 PM Warning Performance Monitor Warning has

9 FP1 and FP2 Therm-

LEGEND

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

FAULT DESCRIPTION

last power-down to power-up sequence

Switch

Coax — FP1

Coil — FP2

Over/Under Voltage Shutdown

istors are swapped

HP Open Instantly

before or during a call (bypassed for first 60 seconds)

FP1 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation)

FP2 below Temp limit for 30 continuous seconds (bypassed for first 60 seconds of operation)

continuous seconds "R" power supply is <19VAC or

>30VAC

occurred. FP1 temperature is higher than FP2

in heating/test mode, or FP2 temperature is higher than FP1 in cooling/ test mode.

Table 22 — 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.

Page 39

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 — There are 3 LED indicators on the Deluxe D control:

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 and appear as 1 fast flash alternating with a 10-second pause. See Table 22.

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 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.

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.

Filters — Filters must be clean for maximum performance.

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

IMPORTANT: Units should never be operated without a filter.

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.

Inspect heat exchangers regularly, and clean more frequently if the unit is located in a “dirty” environment. The heat exchanger should be kept full of water at all times. Open loop systems should have an inverted P trap placed in the discharge line to keep water in the heat exchanger during off cycles. Closed loop systems must have a minimum of 100 kPa during the summer and 275 kPa during the winter.

Check P trap frequently for proper operation.

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. 36.

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. 37.

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.

For average scale deposit, allow solution to remain in condenser overnight. For heavy scale deposit, allow 24 hours.

Page 40

Refrigerant Charging

Fig. 36 — Gravity Flow Method

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

PAI L

FUNNEL

CONDENSER

PAI L

1.0 TO 1.2 m

VENT PIPE

1.5 m APPROX

1-IN. (25 mm) PIPE

a50-8586

Fig. 37 — 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

Fig. 38 — Thermistor Nominal Resistance

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.

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.

Drain condenser and flush with clean water. Follow acid

manufacturer’s instructions.

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.

TROUBLESHOOTING

When troubleshooting problems with a WSHP, see

Table 23.

Thermistor — A thermistor may be required for single-

phase units where starting the unit is a problem due to low voltage. See Fig. 38 for thermistor nominal resistance.

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)

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. 39.

Page 41

a50-8163

LEGEND

Fig. 39 — 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

Page 42

Table 23 — 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 43

Table 23 — 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 Dirty 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 44

Page 45

Page 46

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

Catalog No. 04-53500080-01 Printed in U.S.A. Form 50VQP-C1SI Pg 46 11-10 Replaces: New

Page 47

CL-1

50VQP

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

C AIR OUT C

HEATING CYCLE: AIR IN

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

Book111444 Tab 1a1b5a5a6a6b

PC 111 Catalog No. 536-203 Printed in U.S.A. Form 62AQ-1SI Pg CL-1 7-99 Replaces: New

C AIR OUT C

Page 48

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 17 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 17 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* =

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. 04-53500080-01 Printed in U.S.A. Form 50VQP-C1SI Pg CL-2 11-10 Replaces: New

(DEG C)

(kW)

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE

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

Carrier 50VQP084-300 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual