Carrier 50RHC, RVS, RDS006-060, RVC, RHR User Manual

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50RHC,RVC,RHR,RHS,

RVR,RVS,RDS006-060

Water Source Heat Pump Units

Installation, Start-Up, and

Service Instructions

AQUAZONE™

CONTENTS

Page

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

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

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

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

• STORAGE

•PROTECTION

•INSPECT UNIT

Step 3 — Unit Location. . . . . . . . . . . . . . . . . . . . . . . . . . 14

• FIELD CONVERSION OF DISCHARGE AIR

Step 4 — Mounting the Unit . . . . . . . . . . . . . . . . . . . . . 15

• HORIZONTAL UNITS

• VERTICAL UNITS

Step 5 — Duct System . . . . . . . . . . . . . . . . . . . . . . . . . . 15

• SO U N D AT T E NUATIO N

• EXISTING DUCT SYSTEM

Step 6 — Condensate Drain . . . . . . . . . . . . . . . . . . . . . 16

• HORIZONTAL UNITS

• VERTICAL UNITS

• VENTING

Step 7 — Piping Connections . . . . . . . . . . . . . . . . . . . 16

• WATER LOOP APPLICATIONS

• GROUND-WATER APPLICATIONS

• GROUND-LOOP APPLICATIONS

Step 8 — Field Power Supply Wiring . . . . . . . . . . . . 18

• POWER CONNECTION

• SUPPLY VOLTAGE

• 208-VOLT OPERATION

Step 9 — Field Control Wiring. . . . . . . . . . . . . . . . . . . 18

• THERMOSTAT CONNECTIONS

• WATER FREEZE PROTECTION

• AIR COIL FREEZE PROTECTION

• ACCESSORY CONNECTIONS

• WATER SOLENOID VALVES

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-30

System Checkout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

PSC Blower Speed Selection . . . . . . . . . . . . . . . . . . 27

FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . 30-32

C Control Jumper Settings . . . . . . . . . . . . . . . . . . . . 30

C Control DIP Switches . . . . . . . . . . . . . . . . . . . . . . . 30

D Control Jumper Settings . . . . . . . . . . . . . . . . . . . . 30

D Control DIP Switches . . . . . . . . . . . . . . . . . . . . . . . 30

Units with Modulating Hot Water Reheat

(HWR) Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

D Control Accessory Relay Configurations . . . . . 32

Water Valve (Slow Opening) . . . . . . . . . . . . . . . . . . . 32

Outside Air Damper (OAD) . . . . . . . . . . . . . . . . . . . . 32

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-36

Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 33

Unit Start-Up Cooling Mode . . . . . . . . . . . . . . . . . . . . . 33

Unit Start-Up Heating Mode . . . . . . . . . . . . . . . . . . . . . 34

Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Page

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

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 . . . . . . . 36

Units with Aquazone Deluxe D Control. . . . . . . . . . 36

Units with HWR Option. . . . . . . . . . . . . . . . . . . . . . . . . . 37

SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37,38

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

Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Aquazone Deluxe D Control LED Indicators . . . . . 38

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-40

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 38

Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Fan Motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

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

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

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

Checking System Charge . . . . . . . . . . . . . . . . . . . . . 39

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

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

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 40-42

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

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

50RHC,RVC,RHR,RHS,RVR,RVS,RDS

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

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.

Book 1 4 Ta b 5 a 5 a

Catalog No. 04-53500007-01 Printed in U.S.A. Form 50R-5SI Pg 1 6-07 Replaces: 50R-4SI

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

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

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

adequate space around the unit for servicing. See Fig. 1-3 for overall unit dimensions. Refer to Fig. 4 for an illustration of a typical horizontal installation.

VERTICAL AND DOWNFLOW UNITS (50RVC,RVR, RVS,RDS) — Vertical units are designed for indoor installations. While vertical units are typically installed in a floor-level closet or a small mechanical room, the unit access guidelines for these units are very similar to those described for horizontal units. See Fig. 5-8 for overall dimensions. Refer to Fig. 9 for an example of a typical vertical installation. Refer to Fig. 10 for a sample downflow installation.

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 become clogged with construction dirt and debris which may cause system damage.

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 horizontally and vertically mounted units with electronic controls designed for year-round cooling and heating. Aquazone WSHPs are available in the following unit configurations:

• RHC standard efficiency with horizontal airflow and

right, left or back discharge

• RHR high efficiency with horizontal airflow and right,

left or back discharge

• RHS premium efficiency with horizontal airflow and

right, left or back discharge

• RVC standard efficiency with vertical airflow and top

discharge

• RVR high efficiency with vertical airflow and top

discharge

• RVS premium efficiency with vertical airflow and top

discharge

• RDS premium efficiency with vertical airflow and bot-

tom discharge (downflow)

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 Tables 1-3 for unit physical data.

HORIZONTAL UNITS (50RHC,RHR,RHS) — Horizontal units are designed for indoor installation only. Be sure to allow

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

PROTECTION — Once the units are properly positioned on the jobsite, cover them with either a shipping carton, vinyl film, or an equivalent protective covering. Cap open ends of pipes stored on the jobsite. This precaution is especially important in areas where painting, plastering, or spraying of fireproof material, etc. is not yet complete. Foreign material that accumulates 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.

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

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

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

5. Inspect all electrical connections. Be sure connections are clean and tight at the terminals.

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

7. Remove the four

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

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

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

9. Locate and verify any accessory kit located in compressor section.

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

Table 1 — Physical Data — Aquazone™ 50RHC,RVC006-060 Units

UNIT 50RHC,RVC 006* 009 012 018 024 030 COMPRESSOR (1 each) Rotary FACTORY REFRIGERANT CHARGE R-22

VERTICAL (oz) FACTORY REFRIGERANT CHARGE R-22

HORIZONTAL (oz) PSC FAN MOTOR AND BLOWER

Fan Motor Type/Speeds PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 Fan Motor Std/High Static (Hp) Blower Wheel Size (D x W) (in.) Std/High Static 5 x 5/— 5 x 5/— 6 x 5/— 8 x 7/8 x 7 9 x 7/9 x 7 9 x 7/10 x 8

WATER CONNECTION SIZE (FPT) VERTICAL

Air Coil

Dimensions (H x W) (in.) — 10 x 15 10 x 15 20 x 17.25 20 x 17.25 20 x 17.25 Total Face Area (ft2) — 1.04 1.04 2.4 2.4 2.4

Tube Size (in.) — Fin Spacing (FPI) —1212121212 Number of Rows —23233 Filter Standard — 1-in. Throwaway — 10 x 18 10 x 18 1 — 20 x 20 1 — 20 x 20 1 — 20 x 20 Weight (lb)

Operating — 105 114 181 189 197 Packaged — 115 124 186 194 202

HORIZONTAL

Air Coil

Dimensions (H x W) (in.) 10 x 15 10 x 15 10 x 15 16 x 22 16 x 22 16 x 22 Total Face Area (ft2) 1.04 1.04 1.04 2.44 2.44 2.44

Tube Size (in.) Fin Spacing (FPI) 12 12 12 12 12 12 Number of Rows 223233 Filter Standard — 1-in. Throwaway 10 x 18 10 x 18 10 x 18 1 — 16 x 25 1 — 16 x 25 1 — 16 x 25 Weight (lb)

Operating 103 105 114 181 189 197 Packaged 113 115 124 186 194 202

—1414263837

14 14 14 25 38 37

/25/—

/10/—

/8/1/

Reciprocating

/4/3/

UNIT 50RHC,RVC 036 041† 042 048 060 COMPRESSOR (1 each) Reciprocating Scroll FACTORY REFRIGERANT CHARGE R-22

VERTICAL (oz) FACTORY REFRIGERANT CHARGE R-22

HORIZONTAL (oz) PSC FAN MOTOR AND BLOWER

Fan Motor Type/Speeds PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 Fan Motor Std/High Static (Hp)

Blower Wheel Size (D x W) (in.) Std/High Static 9 x 8/10 x 8 9 x 8/— 9 x 8/10 x 8 10 x 10/12 x 10 11 x 10/11 x 10 WATER CONNECTION SIZE (FPT) VERTICAL

Air Coil

Dimensions (H x W) (in.) 24 x 21.25 1 — 20 x 17.25 24 x 21.25 24 x 28.25 20 x 28.25 Total Face Area (ft2) 3.62 2.4 3.62 4.71 4.71

Tube Size (in.) Fin Spacing (FPI) 14 11 12 12 12 Number of Rows 2433 3

Filter Standard — 1-in. Throwaway 1 — 24 x 24 1 — 20 x 20 1 — 24 x 24 Weight (lb)

Operating 203 207 218 263 278 Packaged 209 212 224 270 285

HORIZONTAL

Air Coil

Dimensions (H x W) (in.) 20 x 25 — 20 x 25 20 x 35 20 x 35 Total Face Area (ft

Tube Size (in.) Fin Spacing (FPI) 14 — 12 12 12 Number of Rows 2—3 3 3

) 3.47 — 3.47 4.86 4.86

Filter Standard — 1-in. Throwaway Weight (lb)

Operating 203 — 218 263 278 Packaged 209 — 224 270 285

LEGEND

FPI — Fins per Inch PSC — Permanent Split Capacitor

*Size 006 available in 50RHC unit only.

†Size 041 available in 50RVC unit only.

42 50 51 66 74

41 50 51 66 74

/2/3/

1 — 20 x 28 2 — 20 x 14

/4/—

—

NOTES:

1. All units have grommet compressor mountings, and electrical knockouts.

2. All sizes available as high-static units.

/4/3/

1 — 20 x 28 2 — 20 x 14

/4/1 1/1

1 — 14 x 24 1 — 18 x 24

1 — 20 x 24 1 — 20 x 14

1 — 14 x 24 1 — 18 x 24

1 — 20 x 24 1 — 20 x 14

/2 and 3/4-in.

Table 2 — Physical Data — Aquazone™ 50RHR,RVR006-060 Units

UNIT 50RHR,RVR 006* 009 012 015 019 024 030 036 042 048 060 COMPRESSOR (1 each) Rotary Reciprocating Scroll FACTORY CHARGE R-22 (oz) 12 15 15 30 30 30 41 44 46 54 80 PSC FAN MOTOR AND BLOWER

Fan Motor Type/Speeds PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 Fan Motor (Hp) Blower Wheel Size (D x W) (in.) 5 x 5 5 x 5 6 x 5 9 x 7 9 x 7 9 x 7 9 x 7 10 x 10 10 x 10 10 x 10 11 x 10

WATER CONNECTION SIZE (FPT) VERTICAL

Air Coil

Dimensions (H x W) (in.) — 10 x 16 16 x 16 20 x 20 28 x 20 28 x 25 Total Face Area (ft2) — 1.1 1.8 2.8 3.9 4.9 Tube Size (in.) Fin Spacing (FPI) —1212121210 Number of Rows —33334 Filter Standard — 1-in. Throwaway — 10 x 20 16 x 20 20 x 24 28 x 24 28 x 30 Weight (lb)

Operating — 112 121 147 169 193 219 229 257 267 323 Packaged — 122 131 157 179 203 231 241 269 279 338

HORIZONTAL

Air Coil

Dimensions (H x W) (in.) 10 x 16 16 x 16 18 x 22 18 x 31 20 x 35 Total Face Area (ft2) 1.1 1.8 2.8 3.9 4.9 Tube Size (in.) Fin Spacing (FPI) 12 12 12 12 10 Number of Rows 223 3 3 3 4

Filter Standard — 1-in. Throwaway 1 — 10 x 20 1 — 16 x 20 1 — 18 x 24 2 — 18 x 18 Weight (lb)

Operating 110 112 121 147 169 193 219 229 257 267 323 Packaged 120 122 131 157 179 203 231 241 269 279 338

LEGEND

FPI — Fins per Inch PSC — Permanent Split Capacitor

*Size 006 available in 50RHR unit only.

—

NOTES:

1. All units have spring compressor mountings, TXV (thermostatic expansion valve) expansion devices, and 1/2 and 3/4-in. electrical knockouts.

2. Size 048 available as high-static unit.

11 1

1 — 12 x 20 1 — 25 x 20

Table 3 — Physical Data — Aquazone 50RHS,RVS,RDS015-070 Units

UNIT 50RHS,RVS,RDS 015 018 024 030 036 042 048 060 070 COMPRESSOR (1 each) Rotary Scroll FACTORY CHARGE R-22 (oz) 44 44 48 48 60 74 74 102 104 PSC FAN MOTOR AND BLOWER

Fan Motor Type/Speeds PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 PSC/3 Fan Motor (Hp) Blower Wheel Size (D x W) (in.) 9 x 7 9 x 7 9 x 7 9 x 7 9 x 7 10 x 10 10 x 10 11 x 10 11 x 10

WATER CONNECTION SIZE (FPT) (in.) HWG CONNECTION SIZE (FPT) (in.) VERTICAL/DOWNFLOW

Air Coil

Dimensions (H x W) (in.) 20 x 20 24 x 20 28 x 20 28 x 25 32 x 25 36 x 25 Total Face Area (ft

Tube Size (in.) Fin Spacing (FPI) 12 12 12 10 10 10 Number of Rows 3 33444

) 2.8 3.3 3.9 4.9 5.6 6.3

Filter Standard — 1-in. Throwaway 1 — 20 x 24 1 — 24 x 24

Weight (lb)

Operating 174 184 250 252 266 323 327 416 443 Packaged 184 194 260 262 276 333 337 426 453

HORIZONTAL

Air Coil

Dimensions (H x W) (in.) 18 x 22 18 x 27 18 x 31 20 x 35 20 x 40 20 x 45 Total Face Area (ft

Tube Size (in.) Fin Spacing (FPI) 12 12 12 10 10 10 Number of Rows 3 33444

) 2.8 3.4 3.9 4.9 5.6 6.3

Filter Standard — 1-in. Throwaway 1 — 18 x 24 2 — 18 x 18

Weight (lb)

Operating 179 189 250 252 266 323 327 416 443 Packaged 189 199 260 262 276 333 337 426 453

LEGEND NOTES:

FPI — Fins per Inch HWG — Hot Water Generator PSC — Permanent Split Capacitor

1. All units have spring compressor mountings, TXV (thermostatic

2. Size 030 and 036 available as high-static units.

2 — 14 x

2 — 18 x 182 — 12 x 201 — 20 x

expansion valve) expansion devices, and 1/2 and 3/4-in. electrical knockouts.

1111

2 — 14 x 30

2 — 10 x

1 — 12 x

1 — 18 x

1 — 24 x

3 — 12 x

2 — 24 x

50RHC

UNITS

006-012

018-030

036-042

048

060

NOTES:

1. Condensate is 3/4-in. FPT copper.

2. Horizontal unit shipped with filter bracket only. This bracket should be removed for return duct connection.

3. Hanger kit is factory installed.

OVERALL CABINET

WidthBDepthCHeight

in. 19.1 34.1 11.0 9.6 0.8 1.8 0.8 8.1 5.1 2.1 0.8 8.9 6.7 5.2 1.3 16.1 9.8 1.1 0.6 cm 48.5 86.6 27.9 24.4 2.0 4.4 2.0 20.6 13.0 5.4 1.9 22.7 17.0 13.3 3.3 41.0 25.0 2.7 1.5

in. 20.1 43.1 17.1 15.3 2.4 1.9 2.1 12.1 9.1 6.1 2.6 13.3 9.9 4.1 1.3 23.0 15.0 1.1 1.0 cm 51.1 109.5 43.4 38.9 6.1 4.9 5.3 30.8 23.2 15.6 6.6 33.8 25.1 10.5 3.3 58.4 38.1 2.8 2.5

in. 20.1 47.1 21.1 18.8 2.2 4.7 1.2 16.1 13.1 10.1 2.5 16.1 11.0 3.0 2.5 25.9 19.0 1.1 1.0 cm 51.1 119.6 53.6 47.6 5.5 11.9 3.0 41.0 33.3 25.7 6.3 40.9 27.9 7.7 6.4 65.8 48.3 2.8 2.5

in. 24.1 54.1 21.1 19.4 5.9 4.3 2.3 16.1 13.1 10.1 3.7 16.1 13.7 4.1 1.3 35.9 19.0 1.1 1.0 cm 61.2 137.4 53.6 49.2 14.9 11.0 5.8 41.0 33.3 25.7 9.5 41.0 34.8 10.3 3.2 91.2 48.3 2.8 2.5

in. 24.1 54.1 21.1 19.4 5.9 4.3 2.3 16.1 13.1 10.1 1.7 18.1 13.7 4.1 1.3 35.9 19.0 1.1 1.0 cm 61.2 137.4 53.6 49.2 14.9 11.0 5.8 41.0 33.3 25.7 4.4 46.0 34.8 10.3 3.2 91.2 48.3 2.8 2.5

WATER CONNECTIONS ELECTRICAL KNOCKOUTS (in.)

1 — In 2 — Out

D E F G Therm Ext Pump

/2 conduit

ASP — Alternate Service Panel BSP — Blower Service Panel CAP — Control Access Panel CSP — Compressor Service Panel

/2 conduit

LEGEND

/4 conduit

Power

Supply

DISCHARGE CONNECTION

Duct Flange Installed (±0.10 in.)

LMSupply

Height

Supply

Depth

OPQReturn

RETURN CONNECTION Using Air Coil Opening

Return

Depth

Height

AIRFLOW CONFIGURATION

Code Return Discharge

S Left Right E Left Back Z Right Left

B Right Back

Fig. 1 — 50RHC Dimensional Data

a50-8155

WATER

OVER ALL

50RHR

UNITS

in. 22.4 43.1 11.3 2.4 5.4 0.6

006-012

cm 56.8 109.5 28.7 6.1 13.7 1.5 8.9 14.0 20.8 14.7 10.2 14.7 20.3 14.7 3.8 43.4 23.6 5.6 2.5

in. 22.4 43.1 17.3 2.4 4.9 0.6

015-024

cm 56.8 109.5 43.9 6.1 12.4 1.5 8.9 19.1 25.9 12.7 14.2 26.4 23.6 12.7 3.8 43.4 38.9 5.6 2.5

in. 22.4 53.2 19.3 2.4 5.4 0.6

030

cm 56.8 135.1 49.0 6.1 13.7 1.5 14.5 24.6 31.0 12.7 17.3 26.4 23.6 12.7 5.3 58.7 43.9 5.6 2.5

in. 22.4 53.2 19.3 2.4 5.4 0.6

036

cm 56.8 135.1 49.0 6.1 13.7 1.5 14.5 24.6 31.0 7.4 9.7 34.3 33.3 7.4 4.8 58.7 43.9 5.6 2.5

in. 22.4 62.2 19.3 2.4 5.4 0.6

042-048

cm 56.8 158.0 49.0 6.1 13.7 1.5 14.5 24.6 31.0 7.4 9.7 34.3 33.3 7.4 4.8 81.5 43.9 5.6 2.5

in. 25.4 71.2 21.3 2.4 5.4 0.6

060

cm 64.5 180.8 54.1 6.1 13.7 1.5 20.6 29.7 36.1 14.7 12.7 34.5 33.8 14.7 7.4 91.7 49.0 5.6 2.5

NOTES:

1. Condensate is 3/4-in. FPT copper.

2. Horizontal unit shipped with filter bracket only. This bracket should be removed for return duct connection.

3. Hanger kit is factory installed. Isolation grommets are provided.

4. Right and left orientation is determined by looking at water connection side.

CABINET

WidthBDepthCHeightDInEOut

3op?œŸ•‘ “ ’

CONNECTIONS

12 3

²±¢p³µ¶·¸¹º»¼½¾¿ÀÁÂ?‘’“”•…†‡denµ´ÇÆÅÄ´

Cond-

ensate

Loop

Wate r

ELECTRICAL KNOCKOUTS (in.)

/2 conduit

FPT

Therm

(in.)

3.5 5.5 8.2 5.8 4.0 5.8 8.0 5.8 1.5 17.1 9.3 2.2 1.0

3.5 7.5 10.2 5.0 5.6 10.4 9.3 5.0 1.5 17.1 15.3 2.2 1.0

5.7 9.7 12.2 5.0 6.8 10.4 9.3 5.0 2.1 23.1 17.3 2.2 1.0

5.7 9.7 12.2 2.9 3.8 13.5 13.1 2.9 1.9 23.1 17.3 2.2 1.0

5.7 9.7 12.2 2.9 3.8 13.5 13.1 2.9 1.9 32.1 17.3 2.2 1.0

8.1 11.7 14.2 5.8 5.0 13.6 13.3 5.8 2.9 36.1 19.3 2.2 1.0

/2 conduit

Ext

Pump

LEGEND

Water Connection

3‘ Service

Access

ASP

BSP

E Configuration - Left Return Back Discharge

Right View

Fron t

LEFT RETURN RIGHT RETURN

Fron t

Right

Discharge

CSP

Blower

Outlet

ASP

S Configuration - Left Return Right Discharge -

Air Coil Opening

Left Return

Back

Discharge

Air Coil Side

ASP — Alternate Service Panel BSP — Blower Service Panel CAP — Control Access Panel CSP — Compressor Service Panel

Power Supply

“ Knockout

3/4

1/2“

Knockout

3.25

Low Voltage

1/2

“ Knockout

Condensate

3/4

“

FPT

Unit Hanger Detail

Model X Y Z

Blower

Outlet

006-024 43.1 24.375 20.375

Front

030-036 53.1 24.375 20.375 042-048 62.1 24.375 20.375 060 71.1 27.375 23.375

BSP

1.6 [40.6mm]

CAP

Front-View

SERVICE

ACCESS

/4 conduit

Powe r

Supply

2 1

BSP

3‘

DISCHARGE CONNECTION

Duct Flange Installed (±0.10 in.)

JKLSupply

Height

Supply

Depth

Right Return

3.25

Condensate

3/4

“

FTP

Back

Discharge

Air Coil Side

B Configuration - Right Return Back Discharge

Air Coil Opening

Blower

Outlet

Z Configuration - Right Return Left Discharge -

RETURN CONNECTION

Using Return Air Opening

NOPReturn

ASP

Blower

Outlet

CSP

Depth

Water Connection

Discharge

Fron t

Left

CSP

BSP

Q Return Height

Left

View

Fron t

Service

‘

Access

Left

View

S Configuration - Left Return Right Discharge -

Air Coil Opening

AIRFLOW CONFIGURATION

Code Return Discharge

S Left Right E Left Back Z Right Left B Right Back

Fig. 2 — 50RHR Dimensional Data

Air Coil

CSP

1.1

Fron t

Air Coil

ASP

Z Configuration - Right Return Left Discharge -

Air Coil Opening

Right View

a50-8156

50RHS

UNITS

015-018

024-030

036

042-048

060

070

NOTES:

1. Condensate is 3/4-in. FPT copper.

2. Horizontal unit shipped with filter bracket only. This bracket should be removed for return duct connection.

3. Hanger kit is factory installed. Isolation grommets are provided.

4. Right and left orientation is determined by looking at water connection side.

OVERALL CABINET

WidthBDepthCHeightDInEOut

in. 22.4 53.2 19.3 2.4 5.4 0.6 cm 56.8 135.1 49.0 6.1 13.7 1.5 14.5 24.6 31.0 12.7 17.3 26.4 23.6 12.7 5.3 58.7 43.9 5.6 2.5

in. 22.4 62.2 19.3 2.4 5.4 0.6 cm 56.8 158.0 49.0 6.1 13.7 1.5 14.5 24.6 31.0 12.7 17.3 26.4 23.6 12.7 5.3 71.4 43.9 5.6 2.5

in. 22.4 62.2 19.3 2.4 5.4 0.6 cm 56.8 158.0 49.0 6.1 13.7 1.5 14.5 24.6 31.0 12.7 17.3 26.4 23.6 12.7 5.3 81.5 43.9 5.6 2.5

in. 25.4 71.2 21.3 2.4 5.4 0.6 cm 64.5 180.8 54.1 6.1 13.7 1.5 20.6 29.7 36.1 14.7 12.7 34.5 33.8 14.7 7.4 91.7 49.0 5.6 2.5

in. 25.4 76.2 21.3 2.4 5.4 0.6 cm 64.5 193.5 54.1 6.1 13.7 1.5 20.6 29.7 36.1 14.7 12.7 34.5 33.8 14.7 7.4 104.4 49.0 5.6 2.5

in. 25.4 81.2 21.3 2.4 5.4 0.6 cm 64.5 206.2 54.1 6.1 13.7 1.5 20.6 29.7 36.1 14.7 12.7 34.5 33.8 14.7 7.4 117.1 49.0 5.6 2.5

WATER CONNECTIONS ELECTRICAL KNOCKOUTS (in.)

12 3

Cond-

ensate

Loop

Water

FPT (in.)

11/

/2 conduit

HWG

FPT (in.)

Therm Ext Pump

5.7 9.7 12.2 5.0 6.8 10.4 9.3 5.0 2.1 23.1 17.3 2.2 1.0

5.7 9.7 12.2 5.0 6.8 10.4 9.3 5.0 2.1 28.1 17.3 2.2 1.0

5.7 9.7 12.2 5.0 6.8 10.4 9.3 5.0 2.1 32.1 17.3 2.2 1.0

8.1 11.7 14.2 5.8 5.0 13.6 13.3 5.8 2.9 36.1 19.3 2.2 1.0

8.1 11.7 14.2 5.8 5.0 13.6 13.3 5.8 2.9 41.1 19.3 2.2 1.0

8.1 11.7 14.2 5.8 5.0 13.6 13.3 5.8 2.9 46.1 19.3 2.2 1.0

/2 conduit

LEGEND

ASP — Alternate Service Panel BSP — Blower Service Panel CAP — Control Access Panel CSP — Compressor Service Panel

/4 conduit

Power

Supply

DISCHARGE CONNECTION

Duct Flange Installed (±0.10 in.)

JKLSupply

Height

Supply

Depth

RETURN CONNECTION Using Air Coil Opening

NOPReturn

Depth

Q Return Height

AIRFLOW CONFIGURATION

Code Return Discharge

S Left Right E Left Back Z Right Left B Right Back

Fig. 3 — 50RHS Dimensional Data

a50-8157

UNIT HANGER ISOLATION DETAIL

Fig. 4 — Typical Installation — 50RHC,RHR,RHS Units

50RVC UNITS

009-012

018-030

036 & 042

041

048-060

NOTES:

1. Condensate is 3/4-in. (19.1 mm) FPT.

2. Filter bracket extending from unit 2.5-in. (6.4 cm). This bracket should be removed when connecting return duct.

3. Discharge flange field installed.

OVERALL CABINET

WidthBDepthCHeight

in. 19.1 19.1 22.0 1.4 2.8 9.4 2.8 6.1 2.3 1/2 2.9 5.9 8.9 8.9 5.1 9.0 9.0 5.5 2.1 16.2 9.9 0.7 cm 48.5 48.5 55.9 3.6 7.1 24.0 7.1 15.6 5.9 1.3 7.3 14.9 22.5 22.7 12.9 22.9 22.9 14.0 5.3 41.1 25.1 1.9

in. 21.5 21.5 39.0 1.8 3.8 15.2 3.6 8.1 2.33/ cm 54.6 54.6 99.1 4.5 9.7 38.6 9.1 20.6 5.8 1.9 10.5 18.1 25.7 16.1 9.5 35.6 35.6 13.6 5.8 46.5 51.3 1.9

in. 21.5 26.0 44.0 2.0 3.7 16.2 2.6 10.4 2.33/ cm 54.6 66.0 111.8 5.1 9.4 41.1 6.6 28.4 5.8 1.9 10.5 18.1 25.7 16.1 9.5 35.6 35.6 13.1 5.8 57.9 61.4 1.9

in. 21.5 21.5 39.0 1.7 3.6 16.4 2.6 8.1 2.33/ cm 54.6 54.6 99.1 4.4 9.1 41.7 6.6 20.6 5.8 1.9 10.5 18.1 25.7 16.1 9.5 35.6 35.6 13.6 5.8 46.5 51.3 1.9

in. 24.0 32.5 46.0 1.8 5.9 16.7 2.3 10.1 2.3 1 4.1 7.1 10.1 6.9 7.3 16.0 18.0 5.1 2.3 29.3 24.2 0.7 cm 6.10 82.6 116.8 4.5 14.9 42.4 5.8 25.7 5.8 2.5 10.5 18.1 25.7 17.4 18.4 40.6 45.7 13.1 5.8 74.4 61.4 1.9

WATER CONNECTIONS ELECTRICAL KNOCKOUTS (in.)

12 3

DE FG H I

In Out Condensate

Water

FPT

Size

ASP — Alternate Service Panel BSP — Blower Service Panel CAP — Control Access Panel CSP — Compressor Service Panel

LEGEND

/2 conduit

Therm

4.1 7.1 10.1 6.4 3.8 14.0 14.0 5.3 2.3 18.3 20.2 0.7

4.1 7.1 10.1 6.4 3.8 14.0 14.0 5.1 2.3 22.8 24.2 0.7

4.1 7.1 10.1 6.4 3.8 14.0 14.0 5.3 2.3 18.3 20.2 0.7

Pump

Ext.

/4 conduit

Power

Supply

DISCHARGE CONNECTION

Duct Flange Installed (±0.10 in.)

MNOSupply

Width

Supply

Depth

RETURN CONNECTION Using Air Coil Opening

QRSReturn

Depth

T Return Height

AIRFLOW CONFIGURATION

Code Return Discharge

L Left Top R Right Top

a50-8158

Fig. 5 — 50RVC Dimensional Data

50RVR UNITS

009-012

015-024

030

036

042-048

060

NOTES:

1. Condensate is 3/4-in. FPT and is switchable from side to front.

2. Vertical unit shipped with filter bracket only extending from unit 2.5 inches. This bracket should be removed when connecting return duct.

3. Discharge flange field installed.

4. Right and left orientation is determined by looking at water connection side.

OVERALL CABINET

WidthBDepthCHeightDInEOut

in. 22.4 21.6 22.6 2.6 5.4 7.8 cm 56.8 54.9 57.4 6.6 13.7 19.8 8.9 14.0 20.8 26.9 17.3 14.7 20.3 15.2 5.6 43.4 23.6 2.5

in. 22.4 21.6 34.6 2.4 4.8 8.5 cm 56.8 54.9 87.9 6.1 12.2 21.6 8.9 19.1 25.9 18.3 9.7 35.6 35.6 10.9 5.6 43.4 38.9 2.5

in. 22.4 25.6 40.6 2.4 5.4 9.7 cm 56.8 65.1 103.1 6.1 13.7 24.6 14.5 24.6 31.0 18.3 14.7 35.6 35.6 10.9 5.6 53.6 48.8 2.5

in. 22.4 25.6 48.6 2.4 5.4 9.7 cm 56.8 65.1 123.4 6.1 13.7 24.6 14.5 24.6 31.0 18.3 14.7 35.6 35.6 10.9 5.6 53.6 69.1 2.5

in. 25.4 30.6 50.6 2.4 5.4 10.7 cm 64.5 77.8 128.5 6.1 13.7 27.2 20.6 29.7 36.1 15.7 16.0 45.7 45.7 13.0 5.6 66.3 69.1 2.5

WATER CONNECTIONS ELECTRICAL KNOCKOUTS (in.)

12 3

Loop

Wate r

FPT

Cond-

(in.)

ensate

ASP — Alternate Service Panel BSP — Blower Service Panel CAP — Control Access Panel CSP — Compressor Service Panel

/2 conduit

Therm Ext Pump

3.5 5.5 8.2 10.6 6.8 5.8 8.0 6.0 2.2 17.1 9.3 1.0

3.5 7.5 10.2 7.2 3.8 14.0 14.0 4.3 2.2 17.1 15.3 1.0

5.7 9.7 12.2 7.2 5.8 14.0 14.0 4.3 2.2 21.1 19.2 1.0

5.7 9.7 12.2 7.2 5.8 14.0 14.0 4.3 2.2 21.1 27.2 1.0

8.1 11.7 14.2 6.2 6.3 18.0 18.0 5.1 2.2 26.1 27.2 1.0

LEGEND

/2 conduit

/4 conduit

Power

Supply

DISCHARGE CONNECTION

Duct Flange Installed (±0.10 in.)

JKLSupply

Standard Filter Bracket

Height

Field Installed Discharge Flange (Shipped loose in blower section)

Supply

Depth

RETURN CONNECTION Using Air Coil Opening

NOPReturn

Depth

Water Connection

Access Panels

Q Return Height

RIGHT RETURN

Fron t

Air Coil Side

R Configuration - Top View-Right Return

ASP

Front

R Configuration - Right Return Right View

- Air Coil Opening

Back

LEFT RETURN

L Configuration - Top View-Left Return

Air Coil Side

Air Coil

Back

L Configuration - Left Return Left View

- Air Coil Opening

CSP

Air Coil

BSP

Front

CSP

CAP

ASP

3’ Service

Access

Left Return

(right

Opposite)

Fron t

Water Connections

1.000

Condensate 3/4

“

FPT

Air Coil

Fron t

Power Supply

3/4“ HV Knockout

Power for

Condensate Pump

1/2“ Knockout

Low Voltage

1/2“ LV Knockout

3’ Service

Access

CSP

CAP

Front View

Isometric

View

2 1

AIRFLOW CONFIGURATION

Code Return Discharge

L Left Top R Right Top

a50-8159

Fig. 6 — 50RVR Dimensional Data

50RVS UNITS

015-018

024-030

036

042-048

060

070

NOTES:

1. Condensate is 3/4-in. FPT and is switchable from side to front.

2. Vertical unit shipped with filter bracket only extending from unit 2.5 inches. This bracket should be removed when connecting return duct.

3. Discharge flange field installed.

4. Right and left orientation is determined by looking at water connection side.

OVERALL CABINET

WidthBDepthCHeightDInEOut

in. 22.4 25.6 40.6 2.4 5.4 9.7 cm 56.8 65.1 103.1 6.1 13.7 24.6 14.5 24.6 31.0 18.3 14.7 35.6 35.6 10.9 5.6 53.6 48.8 2.5

in. 22.4 25.6 44.6 2.4 5.4 9.7 cm 56.8 65.1 113.3 6.1 13.7 24.6 14.5 24.6 31.0 18.3 14.7 35.6 35.6 10.9 5.6 53.6 58.9 2.5

in. 22.4 25.6 48.6 2.4 5.4 9.7 cm 56.8 65.1 123.4 6.1 13.7 24.6 14.5 24.6 31.0 18.3 14.7 35.6 35.6 10.9 5.6 53.6 69.1 2.5

in. 25.4 30.6 50.6 2.4 5.4 10.7 cm 64.5 77.8 128.5 6.1 13.7 27.2 20.6 29.7 36.1 15.7 16.0 45.7 45.7 13.0 5.6 66.3 69.1 2.5

in. 25.4 30.6 54.6 2.4 5.4 10.7 cm 64.5 77.8 138.7 6.1 13.7 27.2 20.6 29.7 36.1 15.7 16.0 45.7 45.7 13.0 5.6 66.3 79.2 2.5

in. 25.4 30.6 58.6 2.4 5.4 10.7 cm 64.5 77.8 148.8 6.1 13.7 27.2 20.6 29.7 36.1 15.7 16.0 45.7 45.7 13.0 5.6 66.3 89.4 2.5

WATER CONNECTIONS ELECTRICAL KNOCKOUTS (in.)

12 3

Cond-

ensate

Loop Water

FPT (in.)

11/

HWG

FPT (in.)

/2 conduit

Therm Ext Pump

5.7 9.7 12.2 7.2 5.8 14.0 14.0 4.3 2.2 21.1 19.2 1.0

5.7 9.7 12.2 7.2 5.8 14.0 14.0 4.3 2.2 21.1 23.2 1.0

5.7 9.7 12.2 7.2 5.8 14.0 14.0 4.3 2.2 21.1 27.2 1.0

8.1 11.7 14.2 6.2 6.3 18.0 18.0 5.1 2.2 26.1 27.2 1.0

8.1 11.7 14.2 6.2 6.3 18.0 18.0 5.1 2.2 26.1 31.2 1.0

8.1 11.7 14.2 6.2 6.3 18.0 18.0 5.1 2.2 26.1 35.2 1.0

/2 conduit

/4 conduit

Power

Supply

DISCHARGE CONNECTION

Duct Flange Installed (±0.10 in.)

JKLSupply

Height

Supply

Depth

RETURN CONNECTION

Using Air Coil Opening

NOPReturn

Depth

Q Return Height

RIGHT RETURN

Fron t

Air Coil Side

R Configuration - Top View-Right Return

Air Coil

LEGEND

ASP — Alternate Service Panel BSP — Blower Service Panel CAP — Control Access Panel CSP — Compressor Service Panel

LEFT RETURN

L Configuration - Top View-Left Return

Air Coil Side

Front

Air Coil

Standard Filter Bracket

Air Coil

CSP

Fron t

3’ Service

Access

Field Installed Discharge Flange (Shipped loose in blower section)

BSP

CAP

Isometric

Water Connection

Access Panels

ASP

View

Water Connections

1.000

3’ Service

Access

Left Return

(right

Opposite)

ASP

Front

R Configuration - Right Return Right View

- Air Coil Opening

AIRFLOW CONFIGURATION

Code Return Discharge

L Left Top R Right Top

Back

CSP

Back

L Configuration - Left Return Left View

- Air Coil Opening

Fron t

Fig. 7 — 50RVS Dimensional Data

Power Supply

3/4“ HV Knockout

Power for

Condensate Pump

1/2“ Knockout

Low Voltage

1/2“ LV Knockout

a50-8169

CSP

Front View

CAP

Condensate 3/4

“

FPT

2 1

50RDS

UNITS

015-018

024-030

036

042-048

060

070

HWG — Hot Water Generator

NOTES:

1. Condensate is

2. Vertical unit shipped with filter bracket only extending from unit 2.5 inch. This bracket should be removed when connecting return duct.

OVERALL CABINET

WidthBDepthCHeightDInEOut

in.

22.4 25.6 44.6 16.9 13.9 5.4 2.4 3.5

cm 56.8 65.1 113.3 42.9 35.3 13.7 6.1 8.9 34.5 24.6 18.3 15.4 20.8 26.4 23.5 27.9 5.6 53.6 51.3 51.8 in.

22.4 25.6 48.6 16.9 13.9 5.4 2.4 3.5

cm 56.8 65.1 123.4 42.9 35.3 13.7 6.1 8.9 34.5 24.6 18.3 15.4 20.8 26.4 23.5 27.9 5.6 53.6 61.5 51.8 in.

22.4 25.6 52.6 16.9 13.9 5.4 2.4 3.5

cm 56.8 65.1 133.6 42.9 35.3 13.7 6.1 8.9 34.5 24.6 18.3 15.4 20.8 26.4 23.5 27.9 5.6 53.6 71.6 51.8 in.

25.4 30.6 54.6 18.9 15.9 5.4 2.4 3.5

cm 64.5 77.8 138.7 48.0 40.4 13.7 6.1 8.9 33.3 24.6 18.3 18.3 22.1 34.4 33.7 26.7 5.6 66.3 71.6 56.9 in.

25.4 30.6 58.6 18.9 15.9 5.4 2.4 3.5

cm 64.5 77.8 148.8 48.0 40.4 13.7 6.1 8.9 33.3 24.6 18.3 18.3 22.1 34.4 33.7 26.7 5.6 66.3 81.8 56.9 in.

25.4 30.6 62.6 18.9 15.9 5.4 2.4 3.5

cm 64.5 77.8 159.0 48.0 40.4 13.7 6.1 8.9 33.3 24.6 18.3 18.3 22.1 34.4 33.7 26.7 5.6 66.3 91.9 56.9

LEGEND

/4-in. PVC FPT and is switchable from side to front.

WATER CONNECTIONS (in.) ELECTRICAL KNOCKOUTS (in.)

12 3 4 5

HWG

Out

Cond-

ensate

Loop

HWG

Water

FPT

(in.)

3/4 1/2

11/2

/2 conduit

Therm

13.6 9.7 7.2 6.1 8.2 10.4 9.3 11.0 2.2 21.1 20.2 20.4

13.6 9.7 7.2 6.1 8.2 10.4 9.3 11.0 2.2 21.1 24.2 20.4

13.6 9.7 7.2 6.1 8.2 10.4 9.3 11.0 2.2 21.1 28.2 20.4

13.1 9.7 7.2 7.2 8.7 13.6 13.3 10.5 2.2 26.1 28.2 22.4

13.1 9.7 7.2 7.2 8.7 13.6 13.3 10.5 2.2 26.1 32.2 22.4

13.1 9.7 7.2 7.2 8.7 13.6 13.3 10.5 2.2 26.1 36.2 22.4

/2 conduit

Ext

Pump

/4 conduit

Power

Supply

DISCHARGE CONNECTION

Outlet Opening Only

MNOSupply

Width

Supply

Depth

RETURN CONNECTION

Using Return Air Opening

QRSReturn

Depth

T Return Height

a506743ef. eps

Blower

Opening

Front

Air Coil Side

Right Return/Bottom Discharge

Floor Foot Print (Top View)

ASP

LEGEND

ASP — Alternate Service Panel BSP — Blower Service Panel CAP — Control Access Panel CSP — Compressor Service Panel

Blower

Opening

Front

CSP

ASP

3’ Service

Access Left Rtn

(right opposite)

Standard Filter Bracket

CAP

BSP

Condensate 3/4”

FPT

ASP

Air Coil Side

3’ Service

Access

Air Coil

Left Return/Bottom Discharge

Floor Foot Print (Top View)

1.1

CSP

Power Supply

”

HV Knockout

3/4

1/2

”

Low Voltage

1/2

”

LV Knockout

Air Coil

Knockout

CSP

Isometric View

1.6

CAP

BSP

1.6

2 1

Front

Right ReturnAir Coil Opening (Right Side View)

Front

Condensate

”

FPT

3/4

Right Return

Back

Left Return -

Air Coil Opening

(Left Side View)

Condensate 3/4

”

FPT

Front-View

Left Return

Fig. 8 — 50RDS Dimensional Data

Supply Air

Building

Flexible Connection

Return

Air

Power

Thermostat Wiring

Compressor Access Panel

NOTE: Ball valve with integral pressure temperature plug recommended.

Loop

Water Out

Water In

Field-supplied stainless steel braid hose with integral “ J” swivel

Ball Valve with optional integral P/T plug (typical for supply and return piping)

Balancing Valve (field installed and calibrated accessory)

Low Pressure

Drop Water Control Valve (optional) (field-installed accessory)

Fig. 9 — Typical Vertical Installation —

50RVC,RVR,RVS Units

Flexible Connection

Return

Air

Power

Thermostat Wiring

Compressor Access Panel

NOTE: Ball valve with integral pressure temperature plug recommended.

Supply Air

Building Loop

Water Out

Field-supplied stainless steel braid hose

with integral “ J” swivel

Flexible Connection

Water In

Balancing Valve

(field-installed

and calibrated

accessory)

Low Pressure

Drop Water Control Valve (optional) (field-installed accessory)

Ball Valve with optional integral P/T plug (typical for supply and return piping)

conversion process is the same for right and left return configurations. See Fig. 11 and 12.

NOTE: It is not possible to convert return air between left or right return models in the field due to refrigerant piping changes.

Preparation

— The unit should be on the ground in a well lit area for conversion. Hung units should be taken down to ground level before converting.

Side to Back Discharge Conversion

1. Remove screws to free the top and discharge panels. See Fig. 11.

2. Remove the access panel and set aside.

3. Lift the discharge panel from side of unit and rotate it to back using care not to damage blower wiring.

4. Check blower wire routing and connections for undo tension or contact with sheet metal edges. Re-route if necessary.

5. Check refrigerant tubing for contact with other components. Adjust if necessary.

6. Reinstall top panel using screws set aside in Step 1.

NOTE: Location for some screws at bottom of discharge panel may have to be changed.

7. Manually spin fan wheel to check for obstructions. Adjust for any obstruction found.

8. Replace access panel.

Back to Side Discharge Conversion

— Follow instructions above for Side to Back Discharge Conversion, noting the panels would be reversed.

Water

Connection End

Remove Screws

Return Air

Fig. 10 — Typical Downflow Installation —

50RDS Units

Step 3 — Unit Location — 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 40 F and 100 F and relative humidity is no greater than 75%.

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

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

• Allow enough space for service personnel to perform maintenance.

• Return air must be able to freely enter the space if unit needs to be installed in a confined area such as a closet.

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

FIELD CONVERSION OF DISCHARGE AIR — The discharge air of the 50RHC,RHR,RHS horizontal units can be converted between side and back discharge in the field. The

Side Discharge

Water

Connection End

Return Air

Move to Side

Water

Connection End

Back Discharge

Replace Screws

Fig. 11 — Conversion Left Return, Side Discharge to Back Discharge

Rotate

Return Air

Drain

Discharge Air

Water

Connection End

Water

Connection End

Return Air

Drain

Discharge Air

Return Air

Supply Duct

Side Discharge

Back Discharge

Fig. 12 — Conversion Right Return,

Side Discharge to Back Discharge

Step 4 — Mounting the Unit

HORIZONTAL UNITS (50RHC,RHR,RHS) — Horizontal units should be mounted using the factory-installed hangers. Proper attachment of hanging rods to building structure is critical for safety. See Fig. 4 and 13. Rod attachments must be able to support the weight of the unit. See Tables 1-3 for unit operating weights.

VERTICAL UNITS (50RVC,RVR,RVS,RDS) — Vertical and downflow units are available in left or right return air configurations. See Fig. 6-8. Mount the unit (except 50RDS) on a

Compressor

Section

Air Handler

Section

vibration absorption pad slightly larger than the entire base to minimize vibration transmission. It is not necessary to mount the unit on the floor. See Fig. 14.

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

Step 5 — Duct System — Size the duct system to han-

dle 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 also be 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,

install larger ductwork.

• 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.

50RHC UNITS

006-012 16.9 34.1 21.1 018-030 18 43.1 22.2 036,042 18 47.1 22.2 048,060 22 54.1 26.2

50RHR UNITS

006-024 22.375 43.1 24.375 43.1 20.375 030,036 22.375 52.1 24.375 52.1 20.375 042,048 22.375 61.1 24.375 61.1 20.375

060 25.375 71.1 27.375 71.1 23.375

50RHS UNITS

015,018 22.375 51 24.375 53 20.375 024-036 22.375 61 24.375 63 20.375 042,048 25.375 70 27.375 72 20.375

060 25.375 75 27.375 77 23.375 070 25.375 80 27.375 82 23.375

ABCDE

DIMENSIONS (in.)

ABC

DIMENSIONS (in.)

Fig. 13 — Horizontal Hanger Bracket

(Factory Installed)

Vibration Absorption Pad

Fig. 14 — 50RVC,RVR,RVS Units Mounted With

Vibration Absorption Pad

Step 6 — Condensate Drain

HORIZONTAL UNITS (50RHC,RHR,RHS) — Slope the unit toward the drain at a If it is not possible to meet the required pitch, install a condensate pump at the unit to pump condensate to building drain.

Horizontal units are not internally trapped, therefore an external trap is necessary. Install each unit with its own individual trap and means to flush or blowout the condensate drain line. Do not install units with a common trap or vent. For typical condensate connections see Fig. 16.

NOTE: Never use a pipe size smaller than the connection. VERTICAL UNITS (50RVC,RVR,RVS) — Each unit uses a

condensate hose inside all cabinets as a trapping loop, therefore an external trap is not necessary. See Fig. 17.

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

Fig. 15 — Horizontal Unit Pitch

NOTE: Trap should be deep enough to offset maximum unit static difference. A 4-in. trap is recommended.

Fig. 16 — Trap Condensate Drain

3/4” Copper FPT/PVC

Water Connections

NOTE: Unit does not need to be sloped toward drain.

Fig. 17 — Vertical Condensate Connection

/4 in. drop at drain end. See Fig. 15.

1/4” Pitch for Drainage

Pitch Toward Drain

Drain Connection

3/4” PVC Vent

1/2”

Alternate Condensate Location

1/4” per foot slope to drain

1/2”

VENTING — Install a vent in the condensate line of any application that 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 — Piping 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 Piping Section of Carrier System Design Manual for additional information.

All WSHP units use 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 Tables 1-3 for connection sizes. When making piping connections, consider the following:

• Use a backup wrench 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 2.25 and 3 gpm per ton

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 using water temperatures below 50 F require to eliminate condensation.

• Avoid all plastic to metal threaded fittings 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.

• Flush the piping system prior to operation to remove dirt and foreign materials from the system.

GROUND-WATER APPLICATIONS (Not Applicable to 50RHC,RVC Units) — Typical ground-water piping is shown in Fig. 18. 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.

• Connect boiler drains and other valves 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.

/2-in. closed cell insulation on all piping surfaces

Water Supply and Quantity

— Check water supply. Water supply should be plentiful and of good quality. See Table 4 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.

GROUND-LOOP APPLICATIONS (Not Applicable to 50RHC,RVC Units) — Temperatures between 25 to 110 F and a cooling capacity of 2.25 to 3 gpm of flow per ton is recommended. In addition to complying with any applicable codes, consider the following for system piping:

• Limit piping materials to only polyethylene fusion in the buried sections of the loop.

• Do not use galvanized or steel fittings at any time due to corrosion.

• Avoid all plastic to metal threaded fittings due to the potential to leak. Use a flange fitted substitute.

• Do not overtighten connections.

• Route piping to avoid service access areas to unit.

• Use pressure-temperature (P/T) plugs to measure flow of pressure drop.

Water Control Valve

PressureTemperature Plugs

Flow Regulator

Boiler Drains

Pressure

Tank

Water Out

Water In From Pump

Shut-Off Valve

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

Fig. 18 — Typical Ground-Water Piping Installation

Table 4 — Water Quality Guidelines

CONDITION ACCEPTABLE LEVEL pH 7 to 9 range for copper. Cupronickel may be used in the 5 to 9 range. Total Hardness Calcium and magnesium carbonate should not exceed 20 grains per gallon (350 ppm). Iron Oxides Less than 1 ppm. Iron Bacteria No level allowable. Corrosion* Max Allowable Level Coaxial Metal

Brackish Use Cupronickel heat exchanger when concentrations of calcium or sodium chloride are greater

*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.

Ammonia, Ammonium Hydroxide 0.5 ppm Cu Ammonium Chloride, Ammonium Nitrate 0.5 ppm Cu Ammonium Sulfate 0.5 ppm Cu Chlorine/Chlorides 0.5 ppm CuNi Hydrogen Sulfide† None Allowable —

than 125 ppm are present. (Seawater is approximately 25,000 ppm.)

Step 8 — Field Power Supply Wiring

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.

Use only copper conductors for field-installed electrical wiring. Unit terminals are not designed to accept other types of conductors. Failure to follow this safety precaution could lead to equipment damage.

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. 19-22 for a schematic of the field connections, which must be made by the installing (or electrical) contractor. Refer to Tables 5-7 for fuse 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 5-7.

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

POWER CONNECTION — Make line voltage connection by connecting the incoming line voltage wires to the L side of the CC terminal as shown in Fig. 23. See Tables 5-7 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

max voltage deviation from average voltage

average voltage

Example: Supply voltage is 460-3-60. AB = 452 volts

BC = 464 volts AC = 455 volts

Average Voltage =

452 + 464 + 455

1371

= 457

Determine maximum deviation from average voltage: (AB) 457 – 452 = 5 v

(BC) 464 – 457 = 7 v (AC) 457 – 455 = 2 v

Maximum deviation is 7 v. Determine percent voltage imbalance.

% Voltage Imbalance = 100 x

= 1.53%

This amount of phase imbalance is satisfactory as it is

below the maximum allowable 2%.

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

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

208-VOLT OPERATION — All 208-230 volt units are factory wired for 208 volts. The transformers may be switched to 230-volt operation by switching the red (208 volt) wire with the orange (230 volt) wire at the L1 terminal.

457

Step 9 — Field Control Wiring

THERMOSTAT CONNECTIONS — The thermostat should be wired directly to the Aquazone™ control board. See Fig. 19-22, and 24.

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 30 F. In earth loop applications, jumper JW3 should be clipped to change the setting to 10 F when using antifreeze in colder earth loop applications. See Fig. 25.

AIR COIL FREEZE PROTECTION — The air coil freeze protection jumper JW2 (FP2) is factory set for 30 F and should not need adjusting.

ACCESSORY CONNECTIONS — Terminal 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. 26. Refer to the specific unit wiring schematic for details.

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

WATER SOLENOID VALVES — Water solenoid valves may be used on primary secondary pump and ground water installations. A typical well water control valve wiring, which can limit waste water in a lockout condition is shown in Fig. 26. A slow closing valve may be required to prevent water hammer. When using a slow closing valve, consider special wiring conditions. The valve takes approximately 60 seconds to open (very little water will flow before 45 seconds) and it activates the compressor only after the valve is completely opened by closing its end switch. When wired as shown, the valve will have the following operating characteristics:

1. Remain open during a lockout

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

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

JW1 — Jumper, Alarm

*Optional wiring.

NOTES:

1. Compressor and blower motor thermally protected internally.

2. All wiring to the unit must comply with NEC and local codes.

3. Transformer is wired to 265 v (BRN) lead for 265/1/60 units, or 208 v (RED) lead for 208/1/60. For 230/1/60 switch RED and ORG leads at L1 and insulate RED lead. Transformer is energy limiting or may have circuit breaker.

4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.

5. Typical Aquazone 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.

Switch

LOC — Loss of Charge Pressure Switch MV — Motorized Valve NEC — National Electrical Code P1 — Field Wiring Terminal Block PM — Performance Monitor RV — Reversing Valve Coil TRANS — Transformer TXV — Thermostatic Expansion Valve

LEGEND

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

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

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

8. For high or low speed remove BLU wire from BR ‘NO’ and replace with BLK or RED wire respectively. Tape off unused terminal.

9. Both DIP switches need to be in the ON position.

a50-8160

Relay/Contactor Coil

Condensate Pan Solenoid Coil Temperature Switch Thermistor Ground Wire Nut

Fig. 19 — Typical Aquazone™ Complete C Control Wiring

LEGEND

*Optional wiring. NOTES:

1. Compressor and blower motor thermally protected internally.

2. All wiring to the unit must comply with NEC and local codes.

3. Transformer is wired to 208 v (RED) lead for 208/3/60. For 230/3/60 switch RED and ORG leads at L1 and insulate RED lead.

4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.

MV — Motorized Valve NEC — National Electrical Code P1 — Field Wiring Terminal Block RVS — Reversing Valve Solenoid TRANS — Transformer TXV — Thermostatic Expansion Valve

Field Line Voltage Wiring Field Low Voltage Wiring Printed Circuit Trace

a50-8161

Relay/Contactor Coil

Condensate Pan Solenoid Coil Thermistor Ground Wire Nut

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

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

8. Blower motor is factory wired for medium and high speeds. For any other combination of speeds, attach the lower speed wire to fan speed relay N.O. wire.

Fig. 20 — Typical Aquazone™ Deluxe D Control Wiring

AL — Alarm Relay Contacts BM — Blower Motor BMC — Blower Motor Capacitor BR — Blower Relay CB — Circuit Breaker CC — Compressor Contactor CO — Sensor, Condensate Overflow COMPR — Compressor FP1 — Sensor, Water Coil Freeze Protection FP2 — Sensor, Air Coil Freeze Protection HP — High-Pressure Switch HPWS — High Pressure Water Switch JW1 — Clippable Field Selection Jumper LOC — Loss of Charge Pressure Switch LON — Local Operating Network MV — Motorized Valve NEC — National Electrical Code P1 — Field Wiring Terminal Block PB — Power Block RVS — Reversing Valve Solenoid TRANS — Transformer TXV — Thermostatic Expansion Valve

*Optional wiring.

LEGEND

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

Relay/Contactor Coil

Condensate Pan Solenoid Coil Temperature Switch Thermistor Ground

a50-8153

Wire Nut Relay Contacts - N.C. Relay Contacts - N.O. Low Pressure Switch High Pressure Switch Splice Cap Circuit Breaker

NOTES:

1. Compressor and blower motor thermally protected internally.

2. All wiring to the unit must comply with NEC and local codes.

3. Transformer is wired to 460 v (BLK/RED) lead for 460/3/60 units, 575 v (GRY) lead for 575/3/60 units, or 380 v (VIO) lead for 380/3/50 units. For 420/3/50 operation, switch VIO and BRN leads at L1 and insulate VIO lead. Transformer is energy limiting or may have circuit breaker.

4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.

5. Typical 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. Factory cut JW1 jumper. Dry contact will be available between AL1 and AL2.

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

8. Fan motors are factory wired for medium speed. For high or low speed, remove BLU wire from fan motor speed tap “M” and connect to “H” for high speed or “L” for low speed.

9. For low speed, remove BLK wire from BR “6” and replace with RED. Connect BLK and BRN wires together.

10. Optional LON wires. Only connect if LON connection is desired at the wall sensor.

11. For blower motors with leads. For medium or low speed, diconnect BLK wire from BR “6”. Connect BLK and ORG/PUR wire together. Connect RED for low or BLU for medium to BR “6”.

12. Blower motor is factory wired to medium speed. For low speed, remove BLU wire from medium tap and connect to low speed tap. For high speed, remove BLU wire from existing speed tap and remove BRN jumperwire from high speed tap. Connect BLU wire to high speed tap. Tape off unconnected end of BRN jumper.

Fig. 21 — Typical Aquazone™ Complete C and LON Controller Wiring

a50-8154

LEGEND

AL — Alarm Relay Contacts BM — Blower Motor BMC — Blower Motor Capacitor BR — Blower Relay CB — Circuit Breaker CC — Compressor Contactor CO — Sensor, Condensate Overflow COMPR — Compressor FP1 — Sensor, Water Coil Freeze Protection FP2 — Sensor, Air Coil Freeze Protection HP — High-Pressure Switch HPWS — High Pressure Water Switch JW1 — Clippable Field Selection Jumper LOC — Loss of Charge Pressure Switch MV — Motorized Valve NEC — National Electrical Code P1 — Field Wiring Terminal Block RVS — Reversing Valve Solenoid TRANS — Transformer TXV — Thermostatic Expansion Valve

*Optional wiring. NOTES:

1. Compressor and blower motor thermally protected internally.

2. All wiring to the unit must comply with NEC and local codes.

4. FP1 thermistor provides freeze protection for water. When using antifreeze solutions, cut JW3 jumper.

6. Factory cut JW1 jumper. Dry contact 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. Blower motor is factory wired for medium and high speeds. For any other combination of speeds, at the motor attach the BLK wire to the higher of the two desired speed taps and the BLU wire to the lower of the two desired speed taps.

9. Blower motor is factory wired for high and low speeds. No other combination is available.

10. Optional LON wires. Only connect if LON connection is desired at the wall sensor.

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

Relay/Contactor Coil

Condensate Pan Solenoid Coil Temperature Switch Thermistor Ground

Wire Nut Relay Contacts - N.C. Relay Contacts - N.O. Low Pressure Switch High Pressure Switch Splice Cap Circuit Breaker

Fig. 22 — Typical Aquazone™ Deluxe D and LON Controller Wiring

a50-8162

Fig. 23 — 50RHC,RVC,RHR,RVR,RHS,RVS,RDS Typical Single-Phase

Line Voltage Power Connection

a50-6267tf.tif

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

Fig. 24 — Low Voltage Field Wiring

a50-6268tf.tif

AQUAZONE CONTROL (C Control Shown)

Fig. 25 — Typical Aquazone Control Board

Jumper Locations

TERMINAL STRIP P2

TYPICAL

24 VAC

WATER VALVE

Fig. 26 — Typical D Control Accessory Wiring

Table 5 — 50RHC,RVC Electrical Data

50RHC,RVC

UNITS

006*

009

012

018

024

030

036

041†

042

048

060

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

VOLTS-PHASE

60 Hz

208/230-1 197/254 2.9 17.7 0.40 3.3 4.1 15

265-1 239/292 2.5 15.0 0.35 2.8 3.5 15

208/230-1 197/254 3.9 22.2 0.80 4.7 5.7 15

265-1 239/292 3.3 18.8 0.70 4.0 4.8 15

208/230-1 197/254 5.3 27.9 0.80 6.1 7.5 15

265-1 239/292 4.2 22.2 0.70 4.9 6.0 15

208/230-1 197/254 8.6 49.0 1.00 9.6 11.7 20

265-1 239/292 8.1 44.0 0.86 8.9 11.0 15

208/230-1 197/254 9.8 56.0 1.50 11.3 13.8 20

265-1 239/292 9.1 55.0 1.30 10.4 12.7 20

208/230-3 197/254 6.7 51.0 1.50 8.2 9.9 15

460-3 414/506 3.5 25.0 0.76 4.2 5.1 15

208/230-1 197/254 11.2 61.0 3.00 14.2 16.9 25

265-1 239/292 10.0 58.0 2.70 12.7 15.2 25

208/230-3 197/254 6.9 55.0 3.00 9.9 11.7 15

460-3 414/506 3.6 28.0 1.70 5.3 6.2 15

208/230-1 197/254 15.4 82.0 1.80 17.2 21.1 35

265-1 239/292 14.4 83.0 2.00 16.4 20.0 30

208/230-3 197/254 9.6 70.0 1.80 11.4 13.8 20

460-3 414/506 4.9 33.0 1.24 6.1 7.4 15 208/230-1 197/254 16.2 96.0 3.00 19.2 23.2 35 208/230-3 197/254 10.3 75.0 3.00 13.3 15.8 25

460-3 414/506 4.3 40.0 1.70 6.0 7.1 15

575-3 518/633 4.3 34.0 1.40 5.7 6.8 15 208/230-1 197/254 17.1 105.0 3.00 20.1 24.3 40 208/230-3 197/254 10.7 85.0 3.00 13.7 16.4 25

460-3 414/506 5.3 42.0 1.70 7.0 8.3 15

575-3 518/633 3.7 31.0 1.50 5.2 6.1 15 208/230-1 197/254 18.3 102.0 3.40 21.7 26.3 40 208/230-3 197/254 12.6 91.0 3.40 16.0 19.2 30

460-3 414/506 5.7 42.0 1.80 7.5 8.9 15

575-3 518/633 4.7 39.0 1.40 6.1 7.2 15 208/230-1 197/254 25.6 170.0 4.30 29.9 36.4 60 208/230-3 197/254 14.7 124.0 4.30 19.0 22.7 35

460-3 414/506 7.4 59.6 2.50 9.9 11.8 15

575-3 518/633 5.9 49.4 1.90 7.8 9.3 15

LEGEND *Size 006 available in 50RHC unit only.

VOLTAGE

MIN/MAX

COMPRESSOR FAN

RLA LRA

MOTOR

FLA

†Size 041 available in 50RVC unit only. NOTES:

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

2. All fuses Class RK-5.

TOTAL

UNIT

FLA

MIN

CIRCUIT

AMP

MAX

FUSE/HACR

Table 6 — 50RHR,RVR Electrical Data

50RHR,RVR

UNITS

006*

009

012

015

019

024

030

036

042

048

060

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

*Size 006 is available in 50RHR units only.

VOLTS-PHASE

LEGEND

60 Hz

208/230-1 197/254 2.9 17.7 0.40 3.3 4.0 15

265-1 239/292 2.5 15.0 0.35 2.8 3.5 15

208/230-1 197/254 3.9 22.2 0.80 4.7 5.7 15

265-1 239/292 3.3 18.8 0.90 4.2 5.0 15

208/230-1 197/254 5.3 27.9 0.80 6.1 7.5 15

265-1 239/292 4.2 22.2 0.90 5.1 6.2 15

208/230-1 197/254 5.9 29.0 1.00 6.9 8.4 15

265-1 239/292 5.4 27.0 0.86 6.3 7.7 15

208/230-1 197/254 7.9 48.3 1.10 9.0 11.0 15

265-1 239/292 7.1 41.0 0.90 8.0 9.7 15

208/230-1 197/254 8.7 48.3 1.30 10.0 12.1 20

265-1 239/292 8.3 47.0 1.58 9.9 12.0 20

208/230-3 197/254 6.0 50.0 1.30 7.3 8.8 15

460-3 414/506 3.2 25.0 0.85 4.1 4.9 15

208/230-1 197/254 11.2 60.0 1.90 13.1 15.9 25

265-1 239/292 10.3 58.0 1.66 11.9 14.5 20

208/230-3 197/254 6.4 50.0 1.90 8.3 9.9 15

460-3 414/506 3.2 25.0 1.00 4.2 5.0 15

208/230-1 197/254 14.1 84.0 3.00 17.1 20.6 30

265-1 239/292 13.5 83.0 2.70 16.2 19.5 30

208/230-3 197/254 8.2 63.4 3.00 11.2 13.3 20

460-3 414/506 4.1 36.0 1.70 5.8 6.8 15 208/230-1 197/254 16.2 96.0 3.00 19.2 23.2 35 208/230-3 197/254 10.3 75.0 3.00 13.3 15.8 25

460-3 414/506 4.3 40.0 1.70 6.0 7.1 15

575-3 518/633 3.7 31.0 1.50 5.2 6.1 15 208/230-1 197/254 18.3 102.0 3.40 21.7 26.2 40 208/230-3 197/254 12.6 91.0 3.40 16.0 19.2 30

460-3 414/506 5.7 42.0 1.80 7.5 8.9 15

575-3 518/633 4.7 39.0 1.60 6.3 7.5 15 208/230-1 197/254 25.6 170.0 4.30 29.9 36.4 60 208/230-3 197/254 14.7 124.0 4.30 19.0 22.7 35

460-3 414/506 7.4 59.6 2.50 9.9 11.8 15

575-3 518/633 5.9 49.4 2.20 8.1 9.8 15

VOLTAGE

MIN/MAX

COMPRESSOR FAN

RLA LRA

MOTOR

FLA

TOTAL

UNIT

FLA

MIN

CIRCUIT

AMP

MAX

FUSE/HACR

Table 7 — 50RDS, RHS, RVS Electrical Data

50RDS,

RHS,

RVS

UNIT

015

018

024

030

HIGH

STATIC

036

HIGH

STATIC

042

048

060

070

FLA — Full Load Amps LRA — Locked Rotor Amps HACR — Heating, Air Conditioning and Refrigeration RLA — Rated Load Amps HWR — Hot Water Reheat

VOLTSPHASE

60 Hz

208/230-1 197/254 4.9 26.0 1.00 5.9 7.2 15 0.8 6.7 7.9 15

265-1 239/292 4.4 28.0 0.86 5.2 6.3 15 0.7 8.0 7.1 15

208/230-1 197/254 7.1 38.0 1.00 8.1 9.8 15 0.8 8.9 10.7 15

265-1 239/292 5.5 32.0 0.86 6.4 7.8 15 0.7 7.1 8.5 15

208/230-1 197/254 10.3 56.0 1.10 11.4 13.9 20 0.8 12.8 15.5 25

265-1 239/292 8.7 47.0 0.90 9.6 11.7 20 0.7 10.6 12.9 20

208/230-3 197/254 7.1 45.0 1.10 8.2 9.9 15 0.8 9.0 10.8 20

460-3 414/506 3.5 22.4 0.57 4.1 5.0 15 0.7 4.8 5.7 15

208/230-1 197/254 12.2 67.0 1.30 13.5 16.5 25 0.8 14.3 17.4 25

265-1 239/292 10.9 56.0 1.58 12.5 15.2 25 0.7 13.2 15.9 25

208/230-3 197/254 7.7 55.0 1.30 9.0 10.9 15 0.8 9.8 11.7 15

460-3 414/506 3.8 27.0 0.85 4.7 5.7 15 0.7 5.4 6.4 15

208/230-1 197/254 12.2 67.0 1.30 13.5 16.5 25 0.8 14.8 17.9 30

265-1 239/292 10.9 56.0 1.58 12.5 15.2 25 0.7 13.6 16.3 25

208/230-3 197/254 7.7 55.0 1.30 9.0 10.9 15 0.8 10.3 12.2 15

460-3 414/506 3.8 27.0 0.85 4.7 5.7 15 0.7 5.8 6.8 15

208/230-1 197/254 13.5 73.0 1.80 15.3 18.6 30 0.8 16.1 19.5 30

265-1 239/292 12.8 71.0 2.00 14.8 18.0 30 0.7 15.5 18.7 30

208/230-3 197/254 9.6 63.0 1.80 11.4 13.8 20 0.8 12.2 14.6 20

460-3 414/506 4.5 31.0 1.24 5.7 6.8 15 0.7 6.5 7.6 15

208/230-1 197/254 13.5 73.0 1.80 15.3 18.6 30 0.8 17.3 20.7 30

265-1 239/292 12.8 71.0 2.00 14.8 18.0 30 0.7 16.2 19.4 30

208/230-3 197/254 9.6 63.0 1.80 11.4 13.8 20 0.8 13.4 15.8 25

460-3 414/506 4.5 31.0 1.24 5.7 6.8 15 0.7 6.9 8.0 15 208/230-1 197/254 16.5 95.0 1.90 18.4 22.6 35 0.8 19.2 23.3 35 208/230-3 197/254 10.3 77.0 1.90 12.2 14.7 25 0.8 13.0 15.6 25

460-3 414/506 5.1 39.0 1.00 6.1 7.4 15 0.7 6.8 8.1 15

575-3 518/633 4.2 31.0 0.80 5.0 6.1 15 N/A N/A N/A N/A 208/230-1 197/254 18.3 109.0 3.00 21.3 25.9 40 1.07 22.4 26.9 45 208/230-3 197/254 12.4 88.0 3.00 15.4 18.5 30 1.07 16.5 19.6 30

460-3 414/506 6.4 44.0 1.70 8.1 9.7 15 1.07 9.2 10.8 15

575-3 518/633 4.8 34.0 1.50 6.3 7.5 15 N/A N/A N/A N/A 208/230-1 197/254 25.0 169.0 3.40 28.4 34.6 50 1.07 29.5 35.7 60 208/230-3 197/254 17.3 123.0 3.40 20.7 25.0 40 1.07 21.8 26.1 40

460-3 414/506 6.7 49.5 1.80 8.5 10.2 15 1.07 9.6 11.2 15

575-3 518/633 5.8 40.0 1.60 7.4 8.8 15 N/A N/A N/A N/A 208/230-1 197/254 28.8 169.0 4.30 33.1 40.4 60 1.07 34.8 42.0 70 208/230-3 197/254 17.3 137.0 4.30 21.6 25.9 40 1.07 23.3 27.6 40

460-3 414/506 9.0 62.0 2.50 11.5 13.7 20 1.07 12.6 14.8 20

575-3 518/633 6.6 49.0 2.20 8.8 10.5 15 N/A N/A N/A N/A

VOLTAGE

MIN/MAX

COMPRESSOR

RLA LRA

LEGEND

FAN

MOTOR

FLA

TOTAL

UNIT

FLA

MIN

CIRCUIT

AMP

MAX

FUSE/HACR

REHEAT

PUMP

FLA

UNITS WITH HWR

TOTAL

UNIT

FLA

MIN

CIRCUIT

AMP

MAX

FUSE /

HACR

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.

When the installation is complete,

7. Isolation valves are open.

8. Water control valves or loop pumps are wired.

9. Condensate line is open and correctly pitched.

10. Transformer switched to lower voltage tap if necessary.

11. Blower rotates freely — shipping support is removed.

12. Blower speed is on correct setting.

13. Air filter is clean and in position.

14. Service/access panels are in place.

15. Return-air temperature is between 40 to 80 F heating and 50 to 110 F cooling.

16. Air coil is clean.

17. Control field selected settings are correct.

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

PSC (Permanent Split Capacitor) Blower Speed Selection —

factory set to deliver rated airflow at nominal static (0.15 in. wg) on medium speed. Where higher static is needed, high speed can be utilized (0.4 to 0.5 in. wg). Low speed will deliver approximately 85% of rated airflow (0.10 in. wg). The PSC blower fan speed can be changed on all units by swapping wires connected to the relay contacts that control the fan. See Fig. 27.

FOR 50RHR,RVR,RHS,RVS AND RDS UNITS — On the control, the black wire is connected to High, blue wire is connected to Medium and red wire is connected to Low. See Fig. 19-22.

NOTE: Available airflows for all units are shown in Tables 8-13. FOR 50RHC,RVC UNITS — The PSC blower fan speed

can be changed by moving the blue wire on the fan motor terminal block to the desired speed as shown in Fig. 27. The 50RHC,RVC units are designed to deliver rated airflow at nominal static (0.15 in. wg) on medium speed (factory setting) and rated airflow at a higher static (0.4 to 0.5 in. wg) on high

All water source heat pumps are

Table 8 — 50RHR,RVR Blower Performance

CONNECT THE BLUE WIRE TO:

H FOR HIGH SPEED FAN M FOR MEDIUM SPEED FAN L FOR LOW SPEED FAN

BLU

MEDIUM FACTORY SETTING

FAN MOTOR

Fig. 27 — 50RHC,RVC Blower Speed Selection

speed for applications where higher static is required. Low speed will deliver approximately 85% of rated airflow at

0.10 in. wg. An optional ‘High Static’ blower is available by using the special option code in the model nomenclature.

50RHR,RVR

UNITS

006* 200 150

009 300 225

012 375 300

015 500 375

019 600 450

024 800 600

030 1000 750

036 1200 900

042 1400 1050

048 1600 1200

High Static

048

060 2000 1500

CFM — Cubic Feet Per Minute

*Size 006 available in 50RHR units only.

RATED

CFM

1600 1200

Shaded areas are below minimum CFM. This data is provided for troubleshooting information only.

MIN

CFM

FAN

SPEED

HI 300 290 280 270 260 250 240 230 210 190 160 110

MED 240 230 220 210 200 190 180 160 140 130 110

LO 220 210 200 200 190 180 160 150 130 130

HI 450 440 430 420 400 390 370 350 320 310 300 230

MED 410 400 390 380 360 350 340 330 310 290 270

LO 370 360 350 340 320 320 310 300 280 260 240

HI 470 460 450 440 430 420 400 390 380 370 350 330 290

MED 410 400 380 370 360 360 350 340 330 320 310 290

LO 340 330 320 320 310 310 300 300 290 290

HI 750 730 710 700 680 660 630 600 570 540 500 400

MED 660 640 620 610 590 570 550 530 500 470 440 370

LO 580 570 550 540 520 500 480 460 430 400 370

HI 850 820 790 770 740 710 670 640 600 560 520 450

MED 700 680 660 640 620 590 560 530 500 470 440

LO 600 580 560 540 510 490 460 460

HI 980 950 920 890 860 830 790 760 720 680 640 540

MED 850 830 800 770 740 720 690 660 620 580 540 460

LO 700 680 660 650 630 610 590 560 530 500 470

HI 1330 1300 1260 1230 1190 1150 1100 1050 1000 960 920 830

MED 1210 1190 1160 1130 1100 1050 1000 970 930 880 830 720

LO 1050 1030 1010 980 950 920 890 850 810 770 730

HI 1580 1540 1500 1470 1440 1410 1370 1330 1280 1240 1200 1090 940

MED 1400 1370 1340 1310 1280 1250 1220 1190 1150 1100 1050 920

LO 1100 1080 1060 1040 1010 980 950 920 890 890

HI 1790 1760 1730 1700 1660 1630 1590 1550 1510 1480 1440 1370 1270 1120

MED 1500 1490 1470 1450 1420 1400 1380 1350 1320 1300 1270 1180 1070

LO 1110 1100 1090 1080 1060 1050 1040

HI 1910 1880 1840 1800 1750 1730 1700 1650 1600 1540 1480 1380 1300

MED 1830 1790 1740 1700 1660 1620 1570 1540 1500 1450 1400 1320 1210 1120

LO 1700 1670 1640 1600 1560 1530 1490 1460 1430 1390 1340 1250 1170

HI 2180 2140 2090 2060 2030 1990 1940 1870 1800 1750 1690 1580 1440 1270

MED 2080 2050 2020 1970 1920 1870 1820 1740 1650 1640 1620 1530 1320 1220

LO 1990 1950 1910 1880 1840 1810 1770 1710 1650 1620 1580 1460 1340

HI 2230 2220 2200 2160 2120 2090 2060 2040 2010 1990 1960 1880 1790 1660

MED 2040 2020 1990 1970 1940 1920 1890 1860 1830 1810 1780 1710 1620

LO 1840 1830 1810 1800 1780 1760 1730 1700 1670 1640 1600 1510

LEGEND

AIRFLOW (Cfm)

External Static Pressure (in. wg)

0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.60 0.70 0.80 0.90

1180

990 910

1180

NOTES:

1. Units factory shipped on medium speed. Other speeds require field selection.

2. All airflow is rated on 208 v operating with wet coil and clean air filter.

3. All units ARI/ISO/ASHRAE 13256-1 rated on high fan speed.

4. Only two-speed fan (H & M) available on 575-v units.

Table 9 — 50RHC,RVC Blower Performance

50RHC,RVC

UNITS

006* 220 150

009 325 225

012 400 300

018 600 450

018

High Static

024 800 600

024

High Static

030 1000 750

030

High Static

036 1200 900

036

High Static

041† 1325 950

042 1350 1050

042

High Static

048 1600 1200

048

High Static

060 2000 1500

060

High Static

*Size 006 is available in 50RHC unit only.

†Size 041 is available in 50RVC unit only. NOTES:

1. Gray areas denote ESP (external static pressure) where operation is not recommended.

2. Units factory shipped on medium speed. Other speeds require field selection.

3. All airflow is rated at lowest voltage if unit is dual voltage rated, i.e., 208 v for 208-230 v units.

4. All units ARI/ISO/ASHRAE 13256-1 rated on high fan speed.

RATED

CFM

600 450

800 600

1000 750

1200 900

1350 1050

1600 1200

2000 1500

MIN

FAN

CFM

SPEED

0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.60 0.70 0.80 0.90 1.0 1.10 1.20 1.30

MED

LO 210 200 190 180 160 150 HI

MED 390 370 360 340 320 310 290 280 260

LO HI

MED

LO HI 760 740 720 710 700 680 650 600 550 460

MED 700 690 680 670 660 650 630 620 600 560 520 430

LO 620 610 600 590 580 570 560 540 520 490 460 HI

MED 750 740 720 710 700 690 670 670 660 650 630 600 490 390

LO 670 660 640 630 620 610 600 590 580 580 570 530 420 HI

MED 1010 1000 990 980 960 940 920 900 880 860 830 770 700 600

LO 820 810 800 790 780 770 760 750 730 720 700 650 600 HI

MED

LO 1030 1010 980 960 930 900 870 790 710 HI

MED 1250 1230 1200 1180 1150 1120 1090 1070 1040 1010 970 890 750

LO 1120 1100 1070 1050 1030 1010 980 960 930 900 870 790 710 HI

MED

LO 1050 1040 1030 1010 990 980 960 940 910 880 840 750 HI 1520 1500 1480 1460 1430 1400 1370 1350 1320 1270 1210 1110 960 840

MED 1150 1150 1140 1140 1130 1130 1120 1110 1100 1070 1040 940

LO 1010 1010 1000 1000 990 990 980 980 970 950 930 HI 1530 1500 1470 1400 1290 1170 960

MED 1360 1350 1340 1330 1320 1310 1300 1280 1260 1250 1230 1150 1070 910

LO 1030 1020 1010 1010 1000 1000 990 980 960 950 930 HI 1380 1370 1350 1330 1300 1260 1220 1170 1120 1080 1040 890

MED 1230 1220 1200 1190 1180 1150 1120 1080 1030 990 950

LO 1040 1030 1010 1000 990 970 950 HI 1640 1610 1580 1550 1520 1490 1450 1410 1370 1330 1290 1190 1100

MED 1490 1470 1440 1420 1390 1370 1340 1310 1270 1230 1190 1120 1010

LO 1140 1140 1130 1130 1120 1110 1100 1080 1060 1010 HI

MED 1390 1380 1370 1360 1350 1340 1320 1310 1300 1280 1250 1180 1080

LO HI

MED 1940 1920 1900 1880 1860 1820 1770 1740 1710 1660 1600 1410 1000

LO 1770 1750 1730 1710 1690 1670 1650 1610 1570 1510 1450 1330 HI

MED 2050 2050 2040 2020 1990 1970 1940 1920 1890 1860 1830 1780 1710 1620 1490 1320

LO 1850 1850 1840 1830 1810 1800 1780 1760 1730 1700 1670 1600 1510 1380 1220 HI 2240 2240 2230 2220 2200 2160 2120 2090 2060 2040 2010 1960 1880 1790 1660 1510

MED 2050 2050 2040 2020 1990 1970 1940 1920 1890 1860 1830 1780 1710 1620 1490

LO 1850 1850 1840 1830 1810 1800 1780 1760 1730 1700 1670 1600 1510 HI 2400 2400 2390 2380 2370 2360 2340 2320 2300 2270 2240 2200 2130 2060 1980 1890 1790 1660 1500

MED 2160 2160 2150 2150 2140 2110 2080 2060 2040 2030 2020 1980 1930 1880 1490 1750 1660 1530

LO 1930 1930 1920 1920 1910 1900 1890 1890 1880 1870 1850 1830 1800 1750 1700 1620 1530

310 300 290 280 270 250 230 210 180 260 250 240 230 210 200 190 150

410 400 380 360 350 330 320 300 280

340 330 322 310 300 280 260 250 220 470 460 450 440 430 420 400 390 380 320

420 410 400 390 380 370 360 350 340 360 360 350 340 320 320 310 300 290

790 780 770 760 750 730 710 690 650 530 430

1550 1540 1520 1500 1470 1460 1450 1380 1240 1080

1980 1950 1910 1860 1800 1740 1680 1490 1280 1280

AIRFLOW (Cfm)

External Static Pressure (in. wg)

1000 970 930 870 770 690

1040 1010 970 890 750 620

1160 1130 1100 1070 1030 950 840

1130 1080 1030 930 820 750

2060 2040 2010 1960 1880 1790 1660 1510

5. Only two-speed fan (H & M) available on 575-v units.

6. For wet coil performance first calculate the face velocity of the air coil (Face Velocity [fpm] = Airflow [cfm]/Face Area [sq ft]). Then for velocities of 200 fpm reduce the static capability by 0.03 in. wg, 300 fpm by

0.08 in. wg, 400 fpm by 0.12 in. wg, and 500 fpm by 0.16 in. wg.

7. Airflow in cfm with net dry coil and clean air filter.

1030 950 840 700

1160 1040 920 800 750

Table 10 — 50RVC Blower Performance with Hot Water Reheat (HWR) Option

REHEAT EXTERNAL STATIC PRESSURE (ESP) LOSS

COIL FACE VELOCITY

(fpm)

018, 024, 030

(in. wg)

036, 042

(in. wg)

048, 060

(in. wg) 200 0.060 0.049 0.038 250 0.070 0.055 0.040 300 0.090 0.068 0.045 350 0.124 0.091 0.059 400 0.164 0.129 0.094 450 0.252 0.221 0.189 500 0.380 0.350 0.320

NOTE: For 50RVC units with HWR, calculate coil face velocity of the entering air. Find the external static pressure loss for the reheat application. This loss includes the wet coil loss.

Table 11 — 50RVC Blower Performance with Wet Coil

COIL FACE VELOCITY

(fpm)

200 0.030 250 0.055 300 0.080 350 0.100 400 0.120 450 0.140 500 0.160

WET COIL REDUCTION

(in. wg)

Table 12 — 50RHS,RVS,RDS Blower Performance

50RHS,RVS,RDS

UNITS

015 500

018 600

024 800

030 1000

Hi Static

030

036 1150

Hi Static

036

042 1400

048 1600

060 2000

070 2300

LEGEND

— — Not Recommended NOTES:

1. Includes allowance for wet coil and clean factory-installed filter.

2. Units factory shipped on medium speed (015 on Low). Other speeds require field selection.

3. All airflow is rated on 208 v operating with wet coil and clean air filter.

4. All units ARI/ISO/ASHRAE 13256-1 rated on high (015 rated on medium).

RATED

AIRFLOW

1000

1150

FAN

SPEED

HS Hi 1380 1360 1320 1280 1250 1220 1200 1150 1110 1070 1020 940 850 690 — — HS Med 1260 1240 1220 1190 1170 1130 1100 1070 1040 990 950 — ———— HS Low 1170 1150 1130 1100 1080 1050 1020 990 960 930 900 — ————

HS Hi 1790 1760 1730 1700 1660 1630 1590 1550 1510 1470 1440 1370 1270 1120 — — HS Med 1510 1490 1470 1450 1420 1400 1380 1350 1320 1300 1270 1180 1070 — — — HS Low 1110 1100 1090 1080 1060 1050 1040 —————————

0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.60 0.70 0.80 0.90 1.00

Hi 880860840830820800780750730690660610————

Med 770760750740720710690670640620600—————

Low 670660660650640630620600580550520—————

Hi 870860840830820800780750730690660610————

Med 770760750740720710690670640620600—————

Low 670660660650640630620600580550520—————

Hi 1130 1110 1090 1060 1040 1010 980 950 920 880 840 720 ————

Med 950940930920910880860820790760730—————

Low 880870860840830810800770730700660—————

Hi 1240 1230 1200 1180 1160 1120 1090 1050 1000 970 930 850 650 — — —

Med 1180 1150 1120 1090 1070 1030 1000 970 950 910 870 — ————

Low 1040 1020 1000 980 960 930 910 870 840 820 790 — ————

Hi 1390 1360 1320 1280 1250 1220 1200 1150 1110 1070 1020 940 850 690 — —

Med 1260 1240 1220 1190 1170 1130 1100 1070 1040 990 950 — ————

Low 1170 1150 1130 1100 1080 1050 1020 990 960 930 900 — ————

Hi — — — 1670 1630 1600 1570 1540 1510 1440 1380 1290 1130 — — —

Med 1610 1580 1550 1510 1480 1450 1420 1390 1360 1320 1270 — ————

Low 1270 1260 1250 1240 1220 1210 1190 1160 1120 1080 1030 — ————

Hi — — — 2010 2000 1940 1880 1830 1780 1690 1610 1540 1310 1190 — —

Med 1940 1910 1870 1820 1780 1740 1700 1670 1630 1570 1520 1410 1310 1170 — —

Low 1470 1460 1450 1440 1430 1410 1380 1360 1330 1280 1220 1110 1040 — — —

Hi — — — — — 2270 2230 2200 2170 2140 2110 2040 1970 1870 1720 1640

Med 2260 2240 2220 2190 2170 2140 2110 2100 2080 2050 2020 1960 1870 1760 1660 1550

Low 2050 2030 2010 1990 1970 1950 1930 1910 1880 1850 1830 1780 1700 1650 1570 1430

Hi — — — — — 2460 2430 2390 2340 2310 2280 2230 2180 1990 1860 1740

Med 2530 2500 2470 2450 2420 2400 2370 2340 2310 2280 2260 2200 2100 1890 1740 1640

Low 2270 2260 2250 2240 2230 2210 2180 2160 2140 2120 2100 2040 1900 1790 1690 1570

External Static Pressure (in. wg)

AIRFLOW (Cfm)

Table 13 — 50RHS, RVS Blower Performance with HWR

COIL FACE

VELOCITY (FPM)

200 0.040 0.037 0.033 0.031 0.028 0.026 250 0.059 0.052 0.046 0.042 0.038 0.034 300 0.088 0.077 0.066 0.059 0.051 0.044 350 0.131 0.113 0.096 0.085 0.073 0.061 400 0.203 0.181 0.160 0.145 0.131 0.117 450 0.258 0.242 0.226 0.215 0.205 0.194 500 0.375 0.360 0.345 0.335 0.326 0.316

LEGEND

ESP — External Static Pressure HWR — Hot Water Reheat

50RHS, RVS

015, 018 (in. wg)

50RHS, RVS

024, 030 (in. wg)

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.

50RHS, RVS WITH REHEAT ESP LOSS

50RHS, RVS

036 (in. wg)

50RHS, RVS

042, 048 (in. wg)

to R, do not clip the jumper. To set as dry contact, clip the jumper.

LOW PRESSURE SETTING — The D Control can be configured for Low Pressure Setting (LP). Select jumper 1 (JW1-

50RHS, RVS

060 (in. wg)

LP Norm Open) for choosing between low pressure input norIMPORTANT: Jumpers and DIP switches should only be clipped when power to control board has been turned off.

C Control Jumper Settings (See Fig. 19)

WATER COIL FREEZE PROTECTION (FP1) LIMIT SETTING — Select jumper 3, (JW3-FP1 Low Temp) to choose FP1 limit of 10 F or 30 F. To select 30 F as the limit, DO NOT clip the jumper. To select 10 F 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 10 F or 30 F. To select 30 F as the limit, DO NOT clip the jumper. To select 10 F 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.

C Control DIP Switches — The C Control has 1 DIP

switch block with two switches. See Fig. 19. 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.

D Control Jumper Settings (See Fig. 20)

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

mally open or closed. To configure for normally closed opera-

tion, do not clip the jumper. To configure for normally open op-

eration, clip the jumper.

D Control DIP Switches — The 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. 20.

DIP SWITCH BLOCK 1 (S1) — This set of switches offers

the following options for 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

able or disable compressor relay staging operation. The com-

pressor 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 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 ener-

gizing 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 out-

put. 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 dehu-

midification mode. The fan speed relay will remain OFF dur-

ing cooling stage 2. Select ON for normal mode. The fan speed

relay will turn on during cooling stage 2 in normal mode.

Switch 6

— Not used.

Boilerless Operation

— Set switch 1 to enable or dis-

— Switch 3 provides selec-

— Switch 4 provides selection for heat

— Switch 5 provides selection

— Switch 7 provides selection of boiler-

less operation and works in conjunction with switch 8. In

50RHS, RVS

070 (in. wg)

— Switch 2 will en-

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

— Switch 8 on S1 provides selection of boilerless changeover temperature set point. Select OFF for set point of 50 F or select ON for set point of 40 F.

If switch 8 is set for 50 F, then the compressor will be used for heating as long as the FP1 is above 50 F. The compressor will not be used for heating when the FP1 is below 50 F and the compressor will operates 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. 20.

Switches 1 to 3

— These DIP switches provide selection of Accessory 1 relay options. See Table 14 for DIP switch combinations.

Switches 4 to 6

— These DIP switches provide selection of Accessory 2 relay options. See Table 15 for DIP switch combinations.

Table 14 — 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 15 — 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

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.

Units with Modulating Hot Water Reheat (HWR) Option —

Reheat (HWR) can operate in three modes: cooling, cooling with reheat, and heating. The cooling and heating modes are like other Aquazone™ water source heat pumps. The reversing

A heat pump equipped with Hot Water

valve ("O" signal) is energized in cooling, along with the compressor contactor(s) and blower relay. In the heating mode, the reversing valve is deenergized. Almost any thermostat will activate the heat pump in heating or cooling modes. The Deluxe D microprocessor board, which is standard with the HWR option, will accept either heat pump (Y,O) thermostats or non-heat pump (Y,W) thermostats.

The reheat mode requires either a separate humidistat/ dehumidistat or a thermostat that has an integrated dehumidification function for activation. The Deluxe D board is configured to work with either a humidistat or dehumidistat input to terminal “H” (DIP switch settings for the Deluxe D board are shown in Table 16). Upon receiving an “H” input, the Deluxe D board will activate the cooling mode and engage reheat.

Table 16 — Humidistat/Dehumidistat Logic and

Deluxe D DIP Switch Settings

Sensor 2.1

Humidistat

Dehumidistat Off On Off Standard 24 VAC 0 VAC

2.2 2.3 Logic

Off Off Off Reverse 0 VAC 24 VAC

Reheat

(ON) - H

Reheat

(OFF) - H

Table 17 shows the relationship between thermostat input signals and unit operation. There are four operational inputs for single stage units and six operational inputs for dual stage units:

•Fan Only

• Cooling Stage 1

• Cooling Stage 2

• Heating Stage 1

• Heating Stage 2

• Reheat Mode MODULATING HWR APPLICATION CONSIDER-

ATIONS — Unlike most hot gas reheat options, the modulating HWR option (RVC,RHS,RVS,RDS only) will operate over a wide range of entering-water temperatures (EWTs). Special flow regulation (water regulating valve) is not required for low EWT conditions. However, below 55 F, supply-air temperatures cannot be maintained at 72 F because the cooling capacity exceeds the reheat coil capacity at low water temperatures. Below 55 F, essentially all water is diverted to the reheat coil (no heat of rejection to the building loop). Although the HWR option will work fine with low EWTs, overcooling of the space may result with well water systems or, on rare occasions, with ground loop (geothermal) systems (NOTE: Extended range units are required for well water and ground loop systems). Since dehumidification is generally only required in cooling, most ground loop systems will not experience overcooling of the supply-air temperature. If overcooling of the space is a concern (e.g., computer room well water application), auxiliary heating may be required to maintain space temperature when the unit is operating in the dehumidification mode. Water source heat pumps with HWR should not be used as makeup air units. These applications should use equipment specifically designed for makeup air. HWR COMPONENT FUNCTIONS — The proportional controller operates on 24 VAC power supply and automatically adjusts the water valve based on the supply-air sensor. The supply-air sensor senses supply-air temperature at the blower inlet, providing the input signal necessary for the proportional control to drive the motorized valve during the reheat mode of operation. The motorized valve is a proportional actuator/threeway valve combination used to divert the condenser water from the coax to the hydronic reheat coil during the reheat mode of operation. The proportional controller sends a signal to the motorized valve based on the supply-air temperature reading from the supply air sensor.

The loop pump circulates condenser water through the hydronic reheat coil during the reheat mode of operation (refer to Fig. 28). In this application, the loop pump is only energized

during the reheat mode of operation. The hydronic coil is utilized during the reheat mode of operation to reheat the air to the set point of the proportional controller. Condenser water is diverted by the motorized valve and pumped through the hydronic coil by the loop pump in proportion to the control set point. The amount of reheating is dependent on the set point and how far from the set point the supply air temperature is. The factory set point is 70 to 75 F, generally considered "neutral" air.

D Control Accessory Relay Configurations —

The following accessory relay settings are applicable for both 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 configuration, 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 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 config-

ured 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.

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.

Table 17 — HWR Operating Modes

MODE

No Demand On/Off

Fan Only On/Off On Off Off Off On/Off On Off Off Off

Cooling Stage 1 Cooling Stage 2 Cooling and Dehumidistat Dehumidistat Only Heating Stage 1 Heating Stage 2 Heating and Dehumidistat**

*Not applicable for single stage units; Full load operation for dual capacity units. †Cooling input takes priority over dehumidify input. **Deluxe D is programmed to ignore the H demand when the unit is in heating mode. NOTE: On/Off is either on or off.

Water Out (To Water Loop)

Water In (From Water Loop)

†

Mixing Valve

On On On Off Off On On On Off Off On On On On Off On On On On Off On On On On/Off On On On On On/Off Off

On/Off Off Off Off

Off Off Off

Internal Pump

INPUT

G Y1 Y2* H O G Y1 Y2* Reheat

Off

On On Off Off Off On On Off Off On On On Off Off On On On Off On On On/Off On Off On On On/Off Off

Off Off Off On/Off Off Off Off Off

On On On On On On

Refrigerant In

(Cooling)

COAX

OUTPUT

a50-8145.eps

NOTE: All components shown are internal to the heat pump unit.

Refrigerant Out

(Cooling)

Entering Air

Fig. 28 — HWR Schematic

Evaporator Coil

Leaving

Air

Reheat

Coil

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 — Depending on the model, units start and operate in an ambient temperature of 45 F with entering-air temperature at 40 F or 50 F, enteringwater temperature at 20 F or 50 F and with both air and water at the flow rates used.

NOTE: These operating limits are not normal or continuous operating conditions. Assume that such a start-up is for the purpose of bringing the building space up to occupancy temperature. See Tables 18 and 19 for operating limits.

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. Failure to heed this warning could lead to personal injury.

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. Refer to Tables 18 and 19 for unit operating limits.

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 Tables 18 and 19.

Scroll Compressor Rotation — It is important to

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

1. Connect service gages to suction and discharge pressure fittings.

2. Energize the compressor.

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

If the suction pressure does not drop and the discharge

pressure does not rise to normal levels:

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

2. Reverse any two of the unit power leads.

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

The suction and discharge pressure levels should now move

to their normal start-up levels.

When the compressor is rotating in the wrong direction, the

unit makes more noise and does not provide cooling.

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

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

Unit Start-Up 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 20. 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 water. Compare to Table 21. If temperature is within range, proceed. If temperature is outside the range, check the cooling refrigerant pressures in Table 21.

5. Check air temperature drop across the coil when compressor is operating. Air temperature drop should be between 15 and 25 F.

Table 18 — Operating Limits — 50RHC,RVC Units

AIR LIMITS

Min. Ambient Air – db 45 F 45 F Rated Ambient Air – db 80.6 F 68 F Max. Ambient Air – db 110 F 85 F Min. Entering Air – db/wb 70/61 F 50 F Rated Entering Air – db/wb 80.6/66.2 F 68 F Max. Entering Air – db/wb 95/76 F 80 F

WATER LIMITS Min. Entering Water 50 F 50 F Normal Entering Water 60-90 F 60-70 F Max. Entering Water 110 F 90 F Normal Water Flow 2.5-3.0 gpm per ton

LEGEND

db — Dry Bulb wb — Wet Bulb

Table 19 — Operating Limits —

50RHR,RHS,RVR,RVS,RDS Units

AIR LIMITS COOLING (F) HEATING (F) Min. Ambient Air 45 45 Rated Ambient Air 80 70 Max. Ambient Air 100 85 Min. Entering Air 50 40 Rated Entering Air db/wb 80/67 70 Max. Entering Air db/wb 110/83 80

WATER LIMITS Min. Entering Water 30 20 Normal Entering Water 50-90 30-60

LEGEND

db — Dry Bulb wb — Wet Bulb

NOTE: Value in heating column is dry bulb only. Any wet bulb reading is acceptable.

Table 20 — Water Temperature Change

Through Heat Exchanger

WATER FLOW RATE (GPM)

For Closed Loop: Ground Source or Cooling/Boiler Systems at 3 gpm/ton

For Open Loop: Ground Water Systems at

1.5 gpm/ton

50RHC,RVC

Cooling Heating

COOLING

RISE (F)

Min Max Min Max

91248

20 26 10 17

HEATING DROP (F)

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. Compare to Table 21. If temperature is within range, proceed. If temperature is outside the range, check the heating refrigerant pressures in Table 21.

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 20 and 30 F 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. See Tables 22-24. Adjust the water control valve until the flow of 1.5 to 2 gpm 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.

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, units require final

purging and loop charging. 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

Table 21 — Typical Unit Operating Pressures and Temperatures

ENTERING

WATER

TEMP (F)

(EWT)

110

DB — Dry Bulb EAT — Entering Air Temperature

GPM/

Suction

TON

Pressure

(psig)

1.5 75-85 90-105 25-40 12-20 21-24 21-26 34- 39 167-186 12-16 1-4 7.6- 8.4 14-20

2.3 74-84 80- 95 25-40 11-18 13-16 21-26 37- 43 172-191 12-16 1-4 4.8- 5.6 16-22

3.0 73-83 70- 85 25-40 10-16 6-11 21-26 40- 46 177-196 12-16 1-4 3.4- 4.2 16-22

1.5 75-85 125-155 12-20 10-18 20-23 20-25 50- 60 180-210 10-17 1-5 10.8-11.9 23-29

2.3 74-84 120-142 12-20 9-16 12-15 20-25 53- 62 185-215 10-17 1-5 6.7- 8.1 24-30

3.0 73-83 115-138 12-20 8-14 8-12 20-25 55- 65 190-220 10-17 1-5 5.1- 5.9 25-31

1.5 75-85 179-198 9-16 8-15 19-22 19-24 71- 82 205-230 14-19 1-5 14.0-15.2 28-34

2.3 74-84 168-186 9-16 8-14 12-17 19-24 73- 85 210-238 14-19 1-5 9.0-10.2 30-37

3.0 73-83 158-175 9-16 8-12 7-12 19-24 76- 88 215-242 14-19 1-5 6.7- 7.9 31-38

1.5 75-85 229-251 9-17 8-15 18-21 17-23 85- 95 220-260 18-28 2-5 14.4-16.6 32-39

2.3 74-84 218-241 9-17 8-14 10-14 17-23 90-100 225-265 18-28 2-5 10.8-12.4 33-41

3.0 73-83 208-230 9-17 8-12 6-11 17-23 95-105 230-270 18-28 2-5 7.2- 8.3 35-42

1.5 77-87 280-320 8-15 10-25 17-20 15-20

2.3 76-86 270-310 8-15 10-24 9-13 15-20

3.0 75-85 260-300 8-15 10-22 5-10 15-20

LEGEND

Discharge

Pressure

(psig)

COOLING HEATING

Super-

heat

(F)

Sub-

cooling

(F)

Water Temp

Rise

(F)

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 50 psi surges to help purge air pockets. This maintains the pump at 50 psi.

5. To purge, keep the pump at 50 psi 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.

NOTE: If air is purged from the system while using a 10 in. PVC flush tank, the level drop will only be 1 to 2 in. 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 1 to 2 in., 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. Pressures will be higher in the winter months than during the warmer months. This fluctuation is normal and should be considered when charging the system initially. Run the unit in either heating or cooling for several minutes to condition the loop to a homogenous temperature.

When complete, perform a final flush and pressurize the loop to a static pressure of 40 to 50 psi for winter months or 15 to 20 psi 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. Compare the results to the data in Tables 22-24.

Air

Temp

Drop (F)

NOTES:

Suction

Pressure

(psig)

1. Based on nominal 400 cfm per ton airflow, 70 F EAT heating and 80/67 F EAT cooling.

2. Cooling air and water numbers can vary greatly with changes in humidity.

3. Subcooling is based upon the head pressure at compressor service port.

4. Unit should not be operated in heating mode with an EWT of 110.

Discharge

Pressure

(psig)

Super-

heat (F)

Sub-

cooling

(F)

Water Temp

Drop (F)

Air

Temp

Rise (F)

Table 22 — 50RHR,RVR Coaxial

Water Pressure Drop

UNIT

50RHR,RVR

006*

009

012

015

019

024

030

036

042

048

060

*Size 006 available in 50RHR unit only.

GPM

0.8 0.8 0.8 0.7 0.7

1.1 1.2 1.1 1.0 1.0

1.5 2.0 1.9 1.8 1.7

1.1 1.2 1.1 1.0 0.9

1.7 1.7 1.6 1.5 1.4

2.2 3.5 3.2 3.0 2.8

1.5 2.8 2.6 2.4 2.3

2.3 6.0 5.6 5.2 4.9

3.0 9.6 9.0 8.3 7.9

1.8 2.5 2.3 2.1 2.0

2.6 4.8 4.5 4.1 3.9

3.5 8.1 7.6 7.0 6.6

2.3 1.9 1.7 1.6 1.5

3.4 3.4 3.1 2.9 2.7

4.5 6.6 6.2 5.7 5.4

3.0 2.0 1.9 1.7 1.6

4.5 4.2 3.9 3.6 3.4

6.0 7.0 6.5 6.0 5.7

3.8 1.4 1.3 1.2 1.2

5.5 2.4 2.3 2.1 2.0

7.5 3.9 3.7 3.4 3.2

4.5 1.1 1.1 1.0 0.9

6.8 2.1 2.0 1.9 1.8

9.0 3.5 3.3 3.0 2.9

5.3 1.4 1.3 1.2 1.2

7.9 2.9 2.7 2.5 2.3

10.5 4.6 4.2 3.9 3.7

6.0 2.1 1.9 1.8 1.7

9.0 3.9 3.7 3.4 3.2

12.0 6.4 5.9 5.5 5.2

7.5 2.9 2.7 2.5 2.4

11.3 5.7 5.3 4.9 4.7

15.0 9.4 8.7 8.1 7.7

30 F 50 F 70 F 90 F

Table 23 — 50RHS,RVS,RDS Coaxial

Water Pressure Drop

UNIT

50RHS,RVS,RDS

015

018

024

030

036

042

048

060

070

GPM

1.8 0.6 0.5 0.5 0.5

2.8 1.0 0.9 0.8 0.8

3.8 1.5 1.4 1.3 1.2

2.2 0.7 0.7 0.6 0.6

3.5 1.3 1.2 1.1 1.1

4.5 1.8 1.8 1.6 1.5

3.0 0.6 0.6 0.5 0.5

4.5 1.1 1.1 1.0 0.9

6.0 1.8 1.7 1.5 1.5

3.7 0.8 0.8 0.7 0.7

5.5 1.6 1.4 1.3 1.3

7.5 2.6 2.4 2.2 2.1

4.5 1.3 1.2 1.1 1.1

7.0 2.1 1.9 1.8 1.7

9.0 3.9 3.7 3.4 3.2

5.2 1.6 1.5 1.4 1.3

8.0 3.2 3.0 2.8 2.6

10.5 5.1 4.7 4.4 4.1

6.0 2.1 1.9 1.8 1.7

9.0 3.9 3.7 3.4 3.2

12.0 6.4 5.9 5.5 5.2

7.5 1.1 1.0 1.0 0.9

11.3 2.2 2.1 1.9 1.8

15.0 3.6 3.4 3.1 3.0

9.0 1.5 1.4 1.3 1.2

13.5 3.0 2.8 2.6 2.5

18.0 5.0 4.7 4.3 4.1

WATER TEMPERATURE (F)

Pressure Drop (psi)

WATER TEMPERATURE (F)

30 F 50 F 70 F 90 F

Pressure Drop (psi)

Table 24 — 50RHC,RVC Coaxial

Water Pressure Drop

UNIT

50RHC,RVC

006*

009

012

018

024

030

036

041†

042

048

060

*Size 006 available in 50RHC unit only.

†Size 041 available in 50RVC unit only.

GPM

0.9 0.7 0.7 0.7 0.6

1.1 1.2 1.2 1.2 1.1

1.7 1.9 1.9 1.8 1.8

2.0 2.9 2.8 2.7 2.6

1.1 2.4 2.3 2.3 2.2

1.7 3.1 3.0 2.9 2.8

2.3 4.0 3.9 3.8 3.7

3.0 5.4 5.3 5.1 4.9

1.5 2.3 2.2 2.1 2.1

2.3 4.4 4.3 4.2 4.0

3.0 6.4 6.2 6.0 5.8

4.013.312.912.612.2

2.3 2.0 2.0 1.9 1.8

3.5 3.1 3.0 2.9 2.8

4.5 4.2 4.1 3.9 3.8

6.0 5.9 5.7 5.6 5.4

3.0 2.0 1.9 1.8 1.8

4.5 3.9 3.7 3.6 3.5

6.0 6.4 6.2 6.0 5.8

8.0 10.6 10.3 10.0 9.7

3.8 1.5 1.5 1.4 1.4

5.5 2.7 2.6 2.5 2.4

7.5 4.3 4.2 4.1 3.9

10.0 6.9 6.7 6.5 6.3

4.5 1.7 1.7 1.6 1.6

6.8 3.2 3.1 3.0 2.9

9.0 5.0 4.9 4.8 4.6

12.0 8.2 7.9 7.7 7.5

5.3 0.9 0.9 0.9 0.9

7.9 2.2 2.1 2.1 2.0

10.5 4.0 3.9 3.8 3.6

13.0 6.2 6.0 5.8 5.7

5.3 1.0 1.0 1.0 0.9

8.0 2.6 2.6 2.5 2.4

11.0 5.3 5.1 4.9 4.8

14.0 8.7 8.5 8.2 8.0

6.0 1.2 1.2 1.2 1.1

9.0 2.9 2.8 2.7 2.6

12.0 5.3 5.1 4.9 4.8

16.0 9.5 9.2 8.9 8.6

7.5 4.4 4.2 4.1 4.0

11.3 7.6 7.3 7.1 6.9

15.0 11.4 11.1 10.8 10.4

20.0 17.6 17.1 16.6 16.1

WATER TEMPERATURE (F)

60 F70 F80 F90 F

Pressure Drop (psi)

Antifreeze — In areas where entering loop temperatures

drop below 40 F 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 15 F below the lowest expected entering loop temperature. For example, if the lowest expected entering loop temperature is 30 F, the leaving loop temperature would be 22 to 25 F. Therefore, the freeze protection should be at 15 F (30 F – 15 F = 15 F).

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

Calculate the total volume of fluid in the piping system. See Table 25. Use the percentage by volume in Table 26 to determine the amount of antifreeze to use. Antifreeze concentration should be checked from a well mixed sample using a hydrometer to measure specific gravity.

FREEZE PROTECTION SELECTION — The 30 F 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 13 F) set point to avoid nuisance faults.

Table 25 — Approximate Fluid Volume (gal.)

per 100 Ft of Pipe

PIPE DIAMETER (in.) VOLUME (gal.)

Copper 14.1

Rubber Hose 13.9

Polyethylene

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

NOTE: Volume of heat exchanger is approximately 1.0 gallon.

LEGEND

1.25 6.4

1.5 9.2

/4 IPS SDR11 2.8

1 IPS SDR11 4.5

/4 IPS SDR11 8.0

/2 IPS SDR11 10.9

2 IPS SDR11 18.0

/4 IPS SCH40 8.3

/2 IPS SCH40 10.9

2 IPS SCH40 17.0

Table 26 — Antifreeze Percentages by Volume

MINIMUM TEMPERATURE FOR

ANTIFREEZE

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

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

FREEZE PROTECTION (F)

10 15 20 25

38 30 22 15

Cooling Tower/Boiler Systems — These systems typ-

ically use a common loop temperature maintained at 60 to 90 F. Carrier recommends using a closed circuit evaporative cooling tower with a secondary heat exchanger between the tower and the water loop. 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 (50RHR,RVR, RHS,RVS,RDS Only) —

temperatures from 30 to 110 F. The external loop field is divided up into 2 in. 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. Locate air separation in the piping system prior to the fluid re-entering the loop field.

These systems allow water

OPERATION

Power Up Mode —

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 the

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 45 F and FP2 is greater than 110 F.

EMERGENCY HEAT — In emergency heat mode, terminal 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 45 F AND FP2 (when shorted) is greater than 110 F 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 immediately 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.

Units with HWR Option

FAN ONLY — A (G) call from the thermostat to the (G) terminal of the Deluxe D control board will bring the unit on in fan only mode.

COOLING STAGE 1 — A simultaneous call from (G), (Y1), and (O) to the (G), (Y1), (O/W2) terminals of the Deluxe D control board will bring the unit on in 1st Stage Cooling.

COOLING STAGE 2 — A simultaneous call from (G), (Y1), (Y2), and (O) to the (G), (Y1), (Y2), and (O/W2) terminals of the Deluxe D control board will bring the unit on in Cooling Stage 2. When the call is satisfied at the thermostat the unit will continue to run in Cooling Stage 1 until the Cooling Stage 1 call is removed or satisfied, shutting down the unit.

NOTE: Not all units have two-stage cooling functionality. HEATING STAGE 1 — A simultaneous call from (G) and

(Y1) to the (G) and (Y1) terminals of the Deluxe D control board will bring the unit on in Heating Stage 1.

HEATING STAGE 2 — A simultaneous call from (G), (Y1), and (Y2) to the (G), (Y1), and (Y2) terminals of the Deluxe D control board will bring the unit on in Heating Stage 2. When the call is satisfied at the thermostat the unit will continue to run in Heating Stage 1 until the call is removed or satisfied, shutting down the unit.

NOTE: Not all units have two-stage heating functionality. REHEAT MODE — A call from the humidistat/dehumid-

istat to the (H) terminal of the Deluxe D control board will bring the unit on in Reheat Mode if there is no call for cooling at the thermostat. When the humidistat/dehumidistat call is removed or satisfied the unit will shut down.

NOTE: Cooling always overrides Reheat Mode. In the Cooling mode, the unit cools and dehumidifies. If the cooling thermostat is satisfied but there is still a call for dehumidification, the unit will continue to operate in Reheat Mode.

SYSTEM TEST

System testing provides the ability to check the control operation. The control enters a 20-minute Test mode by momentarily shorting the test pins. All time delays are increased 15 times. See Fig. 19-22.

Test Mode — To enter Test mode on Complete C or Deluxe

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 27 and 28. To exit Test mode, short the terminals for 3 seconds or cycle the power 3 times within 60 seconds.

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

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

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

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

Table 27 — Complete C Control Current LED

Status and Alarm Relay Operations

LED STATUS DESCRIPTION OF OPERATION ALARM RELAY

Off

Slow Flash Fault Retry Open

Fast Flash Lockout Closed

Slow Flash Over/Under Voltage Shutdown

Flashing Code 1

Flashing Code 2

Flashing Code 3

Flashing Code 4

Flashing Code 5

Flashing Code 6

Flashing Code 7 Flashing Code 8 Test Mode — PM in memory Cycling Code 8 Flashing Code 9

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

Normal Mode with

PM Warning

Complete C Control is

non-functional

Test Mode — No fault in

memory

Test Mode — HP Fault in

memory

Test Mode — LP Fault in

memory

Test Mode — FP1 Fault in

memory

Test Mode — FP2 Fault in

memory

Test Mode — CO Fault in

memory

Test Mode — Over/Under

shutdown in memory

Test Mode — FP1/FP2

Swapped Fault in memory

LEGEND

Cycle

(closed 5 sec.,

Open 25 sec.)

Open

(Closed after

15 minutes)

Cycling Code 1

Cycling Code 2

Cycling Code 3

Cycling Code 4

Cycling Code 5

Cycling Code 6

Cycling Code 7

Cycling Code 9

Table 28 — Complete C Control LED Code and

Fault Descriptions

LED

CODE

1 No fault in memory There has been no fault since

2 High-Pressure Switch HP Open Instantly 3 Low-Pressure Switch LP open for 30 continuous

4 Freeze Protection

5 Freeze Protection Air Coil

6 Condensate overflow Sense overflow (grounded)

7 (Autoreset) Over/Under Voltage

8 PM Warning Performance Monitor Warning

9 FP1 and FP2

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

Coax — FP1

— FP2

Shutdown

Thermistors are swapped

FAULT DESCRIPTION

the last power-down to powerup sequence

seconds 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)

for 30 continuous seconds

"R" power supply is <19VAC or >30VAC

has occurred. FP1 temperature is higher

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

LEGEND

Aquazone™ Deluxe D Control LED Indicators —

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

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

FAULT LED — Fault LED light is red. The fault LED will always flash a code representing the last fault in memory. If there is no fault in memory, the fault LED will flash code 1 on the and appear as 1 fast flash alternating with a 10-second pause. See Table 29.

There are 3 LED indicators on the Deluxe D Control:

SERVICE

Perform the procedures outlined below periodically, as

indicated.

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

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

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

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

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. Keep the heat exchanger 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 15 psi during the summer and 40 psi during the winter. Generally, the higher the water flow through the bail, the lower the chance for sealing.

Check P trap frequently for proper operation.

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. Applying 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 gauges unless unit operation appears abnormal.

Check to see that unit is within the superheat and subcooling temperature ranges shown in Table 21. If the unit is not within these ranges, recover and reweigh in refrigerant charge.

Table 29 — 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 HP — High Pressure ESD — Emergency Shutdown LP — Low Pressure FP — Freeze Protection 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.

Compressor — Conduct annual amperage checks to in-

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

Fan Motors — All units have lubricated fan motors. Fan

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

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. A 10% solution of dishwasher detergent and water is recommended for cleaning both sides of the coil, followed by a thorough water rinse. 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.

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

VENT PIPE

3’ TO 4’

Fig. 29 — Gravity Flow Method

PUMP

SUCTION

PUMP SUPPORT

TANK

PRIMING CONN.

PAIL

1” PIPE

5’ APPROX

GAS VENT

GLOBE VALV ES

SUPPLY

1” PIPE

FUNNEL

REMOVE WATER REGULATING VALVE

PAIL

CONDENSER

Follow all safety codes. Wear safety glasses and rubber gloves when using inhibited hydrochloric acid solution. Observe and follow acid manufacturer’s instructions.

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. 29.

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. 30.

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. Drain condenser and flush with clean water. Follow acid manufacturer’s instructions.

FINE MESH SCREEN

RETURN

Fig. 30 — Forced Circulation Method

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-22, find equivalent saturated condensing temperature.

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

6. Compare the subcooling temperature with the normal temperature listed in Table 21. If the measured liquid line temperature does not agree with the required liquid line temperature, ADD refrigerant to raise the temperature or REMOVE refrigerant (using standard practices) to lower the temperature (allow a tolerance of ± 3° F).

Refrigerant Charging

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 reclaim refrigerant following accepted practices.

Air Coil Fan Motor Removal

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

Disconnect motor power wires 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.

TROUBLESHOOTING

(Fig. 31 and 32, and Table 30)

When troubleshooting problems with a WSHP, consider the

following.

Thermistor — A thermistor may be required for single-

phase units where starting the unit is a problem due to low voltage. See Fig. 31 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

0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 Temperature (degF)

Fig. 31 — Thermistor Nominal Resistance

Control Sensors — The control system employs 2 nom-

inal 10,000 ohm thermistors (FP1 and FP2) that are used for freeze protection. Be sure FP1 is located in the discharge fluid and FP2 is located in the air discharge. See Fig. 32.

AIRFLOW

(°F)

a50-8163

THERMISTOR

CONDENSATE

OVERFLOW

LEGEND

COAX — Coaxial Heat Exchanger

Airflow Refrigerant Liquid Line Flow

AIR

COIL

(CO)

AIR COIL FREEZE PROTECTION

AIRFLOW

(°F)

FP2

EXPANSION

VALV E

LIQUID LINE

WATER COIL PROTECTION

FP1

WATER IN

COAX

WATER OUT

Fig. 32 — FP1 and FP2 Thermistor Location

SUCTION

COMPRESSOR

DISCHARGE

Table 30 — 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 Table 21. X X Bad HP switch Check switch continuity and operation. Replace.

LP/LOC 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

FP1 and FP2 Thermistors — Code 9

No Fault Code Shown X X No compressor operation See scroll compressor rotation section.

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

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>125 F Check for poor airflow or overcharged unit.

X FP1 temperature is higher

X X Compressor overload Check and replace if necessary. 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 (30 F vs 10 F)

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 (30 F vs 10 F)

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>125 F

OR FP2< 40 F

than FP2 temperature.

X FP2 temperature is higher

than FP1 temperature.

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. External static too high. Check Tables 8-13. 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 JW2 jumper for antifreeze (10 F) use.

Bring water temperature within design parameters.

Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. External static too high. Check Tables 8-13.

parameters. Normal airside applications will require 30 F 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.

Check for poor water flow or airflow.

Swap FP1 and FP2 thermistors.

operation in Test mode.

Table 30 — 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.

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

X X Fan motor Check for line voltage at motor. Check capacitor. X X Thermostat wiring Check Y and W wiring at heat pump. Jumper Y and R for compressor

Unit Does Not Operate in Cooling

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. Check RV to ensure the valve is chang-

Insufficient Capacity/ Not Cooling or Heating Properly

X X Dirty filter Replace or clean. X Reduced or no airflow in

heating

X Reduced or no airflow in

cooling

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

X X Low refrigerant charge Check superheat and subcooling Table 21. X X Restricted metering device Check superheat and subcooling Table 21. Replace.

X Defective reversing valve Manually check the four-way valve to ensure all valves are operational.

X X Thermostat improperly

located

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

X X Scaling in water heat

exchanger

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

High Head Pressure X Reduced or no airflow in

heating

X Reduced or no water flow in

cooling

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

X Air temperature out of range

in heating

X Scaling in water heat

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

system X X Restricted metering device Check superheat and subcooling per Table 21. Replace.

Low Suction Pressure X Reduced water flow in

X Water temperature out of

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 X Insufficient charge Check for refrigerant leaks.

Low Discharge Air Temperature in Heating

X Too high airflow Check blower Tables 8-13. X Poor performance See 'Insufficient Capacity'.

High Humidity X Too high airflow Check blower Tables 8-13.

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

LEGEND

RV — Reversing Valve

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

operation in test mode.

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

ing over from heating and cooling modes. A 'click' should be heard when the RV changes modes.

Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. External static too high. Check blower Tables 8-13. Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. External static too high. Check blower Tables 8-13.

registers if significantly different, duct leaks are present.

Check location and for air drafts behind thermostat.

capacity. Check for scale (water deposits) and clean if necessary.

Check for dirty air filter and clean or replace. Check fan motor operation and airflow restrictions. External static too high. Check blower Tables 8-13. Check pump operation or valve operation/setting. Check water flow adjust to proper flow rate. See Table 20.

Bring return air temperature within design parameters.

Check for scale (water deposits) and clean if necessary.

Evacuate the refrigerant, recharge the system, and then weigh the new refrigerant 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. External static too high. Check blower Tables 8-13.

parameters.

capacity.

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

Book 1 4 Ta b 5 a 5 a

Catalog No. 04-53500007-01 Printed in U.S.A. Form 50R-5SI Pg 42 6-07 Replaces: 50R-4SI

50RHC,RVC,RHR,RHS,RVR,RVS,RDS

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

FFLUID OUT F PSI FLOW

HEATING CYCLE: FLUID IN

FFLUID OUT F PSI FLOW

AIR COIL COOLING CYCLE:

AIR IN

HEATING CYCLE: AIR IN

FAIR OUT F

CL-1

HEATING CYCLE ANALYSIS

AIR

COIL

LIQUID LINE

a50-8197.eps

COOLING CYCLE ANALYSIS

EXPANSION

VALV E

WATER IN

COAX

PSI

WATER OUT

PSI

LOOK UP PRESSURE DROP IN TABLES 22-24 TO DETERMINE FLOW RATE

PSI

°F

SAT

SUCTION

COMPRESSOR

DISCHARGE

SAT

°F

a50-8165

AIR

COIL

°F

EXPANSION

VALV E

LIQUID LINE

COAX

°F

WATER IN

°F

PSI

WATER OUT

°F

PSI

LOOK UP PRESSURE DROP IN TABLES 22-24 TO DETERMINE FLOW RATE

SUCTION

COMPRESSOR

DISCHARGE

HEAT OF EXTRACTION (ABSORPTION) OR HEAT OF REJECTION =

FLOW RATE (GPM) x TEMP. DIFF. (DEG. F) x FLUID FACTOR* =

SUPERHEAT = SUCTION TEMPERATURE – SUCTION SATURATION TEMPERATURE

(DEG F)

SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE

*Use 500 for water, 485 for antifreeze.

(DEG F)

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE

(Btu/hr)

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

Book 1 4 Ta b 5 a 5 a

Catalog No. 04-53500007-01 Printed in U.S.A. Form 50R-5SI Pg CL-2 6-07 Replaces: 50R-4SI

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Carrier 50RHC, RVS, RDS006-060, RVC, RHR User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual