Instruction manual

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

PC 111 Catalog No. 535-00057 Printed in U.S.A. Form 50R-3SI Pg 1 7-02 Replaces: 50R-1SI

Book 1 4

Ta b 5 a 5 a

Installation, Start-Up, and

Service Instructions

CONTENTS

Page

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

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

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

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

• STORAGE

• PROTECTION

• INSPECT UNIT

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

• FIELD CONVERSION OF DISCHARGE AIR

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

• HORIZONTAL UNITS

• VERTICAL AND DOWNFLOW UNITS

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

• SOUND ATTENUATION

• EXISTING DUCT SYSTEM

Step 6 — Condensate Drain . . . . . . . . . . . . . . . . . . . . . 15

• HORIZONTAL UNITS

• VERTICAL UNITS

• VENTING

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

• WATER LOOP APPLICATIONS

• GROUND-WATER APPLICATIONS

• GROUND-LOOP APPLICATIONS

Step 8 — Electrical Wiring. . . . . . . . . . . . . . . . . . . . . . . 17

• POWER CONNECTION

• SUPPLY VOLTAGE

• 208-VOLT OPERATION

• PCS BLOWER SPEED SELECTION

Step 9 — Low Voltage Wiring. . . . . . . . . . . . . . . . . . . . 28

• THERMOSTAT CONNECTIONS

• WATER FREEZE PROTECTION

• AIR COIL FREEZE PROTECTION

• ACCESSORY CONNECTIONS

• WATER SOLENOID VALVES

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28,29

System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

FIELD SELECTABLE INPUTS . . . . . . . . . . . . . . . .29,30

C Control Jumper Settings . . . . . . . . . . . . . . . . . . . . 29

C Control DIP Switches . . . . . . . . . . . . . . . . . . . . . . . 29

D Control Jumper Settings . . . . . . . . . . . . . . . . . . . . 29

D Control DIP Switches . . . . . . . . . . . . . . . . . . . . . . . 29

D Control Accessory Relay Configurations . . . . . 30

Water Valve (Slow Opening) . . . . . . . . . . . . . . . . . . . 30

Outside Air Damper (OAD) . . . . . . . . . . . . . . . . . . . . 30

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-33

Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Scroll Compressor Rotation. . . . . . . . . . . . . . . . . . . . . 31

Unit Start-Up Cooling Mode . . . . . . . . . . . . . . . . . . . . . 31

Unit Start-Up Heating Mode . . . . . . . . . . . . . . . . . . . . . 31

Flow Regulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Page

Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Cooling Tower/Boiler Systems . . . . . . . . . . . . . . . . . . 33

Ground Coupled, Closed Loop and Plateframe

Heat Exchanger Well Systems . . . . . . . . . . . . . . . . 33

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33,34

Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Units with Aquazone™ Complete C Control . . . . . 33

Units with Aquazone Deluxe D Control . . . . . . . . . . 33

SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34,35

Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Retry Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Aquazone Deluxe D Control LED Indicators . . . . . 35

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35-37

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Water Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . . . . 36

Refrigerant System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . . . 36

Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 36

Refrigerant Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . . . 37

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 37-39

Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Control Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

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

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can

be hazardous due to system pressure and electrical compo-

nents. Only trained and qualified service personnel should

install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func-

tions 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 precau-

tions in the literature, tags and labels attached to the unit, and

other safety precautions that may apply.

Improper installation, adjustment, alteration, service, main-

tenance, 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 individ-

ual instructions packaged with the kits or accessories when

installing.

IMPORTANT: Read the entire instruction manual before

starting installation.

Water Source Heat Pump Units

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

Summary of content (44 pages)

PAGE 1
TM Water Source Heat Pump Units 50RHC,RVC,RHR,RVR,RHS,RVS,RDS Installation, Start-Up, and Service Instructions CONTENTS Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . .1,2 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28 Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . . 2 Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 2
Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and the National Electrical Code (NEC) 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.
PAGE 3
Step 3 — Unit Location — The following guidelines 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.
PAGE 4
Table 1 — Physical Data — Aquazone™ 50RHC,RVC018-060 Units UNIT 50RHC,RVC COMPRESSOR (1 each) FACTORY REFRIGERANT CHARGE VERTICAL (oz) FACTORY REFRIGERANT CHARGE HORIZONTAL (oz) PSC FAN MOTOR AND BLOWER Fan Motor Type/Speeds Fan Motor (Hp) Blower Wheel Size (D x W) (in.) WATER CONNECTION SIZE (FPT) VERTICAL Air Coil Dimensions (H x W) (in.) Total Face Area (ft2) Tube Size (in.) Fin Spacing (FPI) Number of Rows Filter Standard — 1-in.
PAGE 5
Table 3 — Physical Data — Aquazone™ 50RHS,RVS,RDS015-070 Units UNIT 50RHS,RVS,RDS COMPRESSOR (1 each) FACTORY CHARGE R-22 (oz) PSC FAN MOTOR AND BLOWER Fan Motor Type/Speeds Fan Motor (Hp) Blower Wheel Size (D x W) (in.) WATER CONNECTION SIZE (FPT) 015 018 024 030 036 44 44 48 48 60 PSC/3 1/ 6 9x7 3/ 4 PSC/3 1/ 6 9x7 3/ 4 PSC/3 1/ 5 9x7 3/ 4 PSC/3 1/ 3 9x7 3/ 4 PSC/3 1/ 2 9x7 3/ 4 Rotary VERTICAL/DOWNFLOW Air Coil Dimensions (H x W) (in.) Total Face Area (ft2) Tube Size (in.
PAGE 6
WATER CONNECTIONS OVERALL CABINET 1 — In 50RHC UNITS 018-030 036-042 048 060 in. cm in. cm in. cm in. cm 2 — Out 1/ ELECTRICAL KNOCKOUTS (in.) H J K 1/ conduit 3/ conduit 2 conduit 2 4 DISCHARGE CONNECTION Duct Flange Installed (± ±0.10 in.) A Width B Depth C Height D E F G Low Voltage Ext Pump Power Supply L 20.1 51.1 20.1 51.1 24.1 61.2 24.1 61.2 43.1 109.5 47.1 119.6 54.1 137.4 54.1 137.4 17.1 43.4 21.1 53.6 21.1 53.6 21.1 53.6 15.3 38.9 18.8 47.6 19.4 49.2 19.4 49.2 2.4 6.1 2.
PAGE 7
WATER CONNECTIONS OVERALL CABINET 50RHR UNITS 006-012 in. cm 015-024 in. cm in. 030 cm in. 036 cm 042-048 in. cm in. 060 cm 1 2 3 F Condensate 0.6 1.5 0.6 1.5 0.6 1.5 0.6 1.5 0.6 1.5 0.6 1.5 A Width B Depth C Height D In E Out 22.4 56.8 22.4 56.8 22.4 56.8 22.4 56.8 22.4 56.8 25.4 64.5 43.1 109.5 43.1 109.5 53.2 135.1 53.2 135.1 62.2 158.0 71.2 180.8 11.3 28.7 17.3 43.9 19.3 49.0 19.3 49.0 19.3 49.0 21.3 54.1 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 5.4 13.7 4.9 12.4 5.4 13.7 5.4 13.
PAGE 8
WATER CONNECTIONS OVERALL CABINET 50RHS UNITS 015-018 024-030 036 042-048 060 070 in. cm in. cm in. cm in. cm in. cm in. cm 1 2 3 F Condensate 0.6 1.5 0.6 1.5 0.6 1.5 0.6 1.5 0.6 1.5 0.6 1.5 A Width B Depth C Height D In E Out 22.4 56.8 22.4 56.8 22.4 56.8 25.4 64.5 25.4 64.5 25.4 64.5 53.2 135.1 62.2 158.0 62.2 158.0 71.2 180.8 76.2 193.5 81.2 206.2 19.3 49.0 19.3 49.0 19.3 49.0 21.3 54.1 21.3 54.1 21.3 54.1 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 5.4 13.7 5.4 13.7 5.4 13.7 5.4 13.
PAGE 9
Return Loop 3/8” threaded rods (by others) Supply Loop Water In Filter Access Water Out Return Air (Ductwork not shown) Field-supplied transition to minimize pressure loss Power Wiring Supply Air Thermostat Wiring Field-supplied stainless steel braid hose with integral “ J” swivel Balancing Valve (field installed and calibrated accessory) Low Pressure Drop Water Control Valve (optional) (field-installed accessory) Unit Power Flexible Insulated supply duct with Connection at least one 90 deg elbow F
PAGE 10
WATER CONNECTIONS OVERALL CABINET 50RVC UNITS A B C Width Depth Height in. cm in. 036 & 042 cm in. 041 cm 048-060 in. cm 018-030 21.5 54.6 21.5 54.6 21.5 54.6 24.0 6.10 21.5 54.6 26.0 66.0 21.5 54.6 32.5 82.6 39.0 99.1 44.0 111.8 39.0 99.1 46.0 116.8 1 D 2 E In 1.8 3.8 4.5 9.7 2.0 3.7 5.1 9.4 1.7 3.6 4.4 9.1 1.8 5.9 4.5 14.9 3 F G Out 15.2 38.6 16.2 41.1 16.4 41.7 16.7 42.4 3.6 9.1 2.6 6.6 2.6 6.6 2.3 5.8 H I Water FPT Size Condensate 8.1 20.6 10.4 28.4 8.1 20.6 10.1 25.7 2.3 5.8 2.3 5.8 2.
PAGE 11
WATER CONNECTIONS OVERALL CABINET 50RVR UNITS 009-012 015-024 030 036 042-048 060 in. cm in. cm in. cm in. cm in. cm in. cm 1 2 3 F Condensate 7.8 19.8 8.5 21.6 9.7 24.6 9.7 24.6 9.7 24.6 10.7 27.2 A Width B Depth C Height D In E Out 22.4 56.8 22.4 56.8 22.4 56.8 22.4 56.8 22.4 56.8 25.4 64.5 21.6 54.9 21.6 54.9 25.6 65.1 25.6 65.1 25.6 65.1 30.6 77.8 22.6 57.4 34.6 87.9 40.6 103.1 40.6 103.1 48.6 123.4 50.6 128.5 2.6 6.6 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 5.4 13.7 4.8 12.2 5.4 13.7 5.
PAGE 12
WATER CONNECTIONS OVERALL CABINET 50RVS UNITS 015-018 024-030 036 042-048 060 070 in. cm in. cm in. cm in. cm in. cm in. cm 1 2 3 F Condensate 9.7 24.6 9.7 24.6 9.7 24.6 10.7 27.2 10.7 27.2 10.7 27.2 A Width B Depth C Height D In E Out 22.4 56.8 22.4 56.8 22.4 56.8 25.4 64.5 25.4 64.5 25.4 64.5 25.6 65.1 25.6 65.1 25.6 65.1 30.6 77.8 30.6 77.8 30.6 77.8 40.6 103.1 44.6 113.3 48.6 123.4 50.6 128.5 54.6 138.7 58.6 148.8 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 2.4 6.1 5.4 13.7 5.4 13.7 5.4 13.
PAGE 13
50RDS UNITS in. 015-018 cm in. 024-030 cm in. 036 cm in. 042-048 cm in. 060 cm in. 070 cm WATER CONNECTIONS (in.) OVERALL CABINET (in.) 1 2 3 4 5 D In E Out F HWG In G HWG Out H Condensate A Width B Depth C Height 22.4 56.8 25.6 65.1 44.6 113.3 16.9 13.9 42.9 35.3 5.4 13.7 2.4 6.1 3.5 8.9 22.4 56.8 25.6 65.1 48.6 123.4 16.9 13.9 42.9 35.3 5.4 13.7 2.4 6.1 3.5 8.9 22.4 56.8 25.6 65.1 52.6 133.6 16.9 13.9 42.9 35.3 5.4 13.7 2.4 6.1 3.5 8.9 25.4 64.5 30.6 77.8 54.6 138.
PAGE 14
Supply Air Water Connection End Remove Screws Building Loop Flexible Connection Return Air Water Out Return Air Water In Field-supplied stainless steel braid hose with integral “ J” swivel Power Thermostat Wiring Balancing Valve (field installed and calibrated accessory) Side Discharge Low Pressure Drop Water Control Valve (optional) (field-installed accessory) Water Connection End Rotate Return Air Compressor Access Panel Ball Valve with optional integral P/T plug (typical for supply and retur
PAGE 15
Step 4 — Mounting the Unit 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.
PAGE 16
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.
PAGE 17
Water Control Valve Flow Regulator Pressure Tank Water Out Water In From Pump Shut-Off Valve Boiler Drains Strainer – Field-Installed Accessory (16 to 20 mesh recommended for filter sediment) PressureTemperature Plugs Fig. 18 — Typical Ground-Water Piping Installation Water Supply and Quantity — Check water supply. Water supply should be plentiful and of good quality. See Table 4 for water quality guidelines.
PAGE 18
Table 4 — Water Quality Guidelines CONDITION pH Total Hardness Iron Oxides Iron Bacteria Corrosion* Brackish ACCEPTABLE LEVEL 7 to 9 range for copper. Cupronickel may be used in the 5 to 9 range. Calcium and magnesium carbonate should not exceed 20 grains per gallon (350 ppm). Less than 1 ppm. No level allowable. Max Allowable Level Coaxial Metal Ammonia, Ammonium Hydroxide 0.5 ppm Cu Ammonium Chloride, Ammonium Nitrate 0.5 ppm Cu Ammonium Sulfate 0.5 ppm Cu Chlorine/Chlorides 0.
PAGE 19
PM Stg 1/Stg 2 See Note 9 Aquazone Thermostat LEGEND AL BM BMC BR CAP CC CO FP1 FP2 HP HWTS — — — — — — — — — — — Alarm Relay Contacts Blower Motor Blower Motor Capacitor Blower Relay Capacitor Compressor Contactor Sensor, Condensate Overflow Sensor, Water Coil Freeze Protection Sensor, Air Coil Freeze Protection High-Pressure Switch High (Leaving) Water Temperature Switch JW1 LOC NEC P1 PM RVS Trans — — — — — — — Jumper, Alarm Loss of Charge Pressure Switch National Electrical Code Field Wiring Ter
PAGE 20
Aquazone Thermostat PM LEGEND AL BM BMC CB CC CO FP1 FP2 HP JW1 — — — — — — — — — — Alarm Relay Contacts Blower Motor Blower Motor Capacitor Circuit Breaker Compressor Contactor Sensor, Condensate Overflow Sensor, Water Coil Freeze Protection Sensor, Air Coil Freeze Protection High-Pressure Switch Jumper, Alarm LOC NEC P1 PM RVS Tfrmr — — — — — — Loss of Charge Pressure Switch National Electrical Code Field Wiring Terminal Block Performance Monitor Reversing Valve Solenoid Transformer Field Line Volt
PAGE 21
Fig. 21 — 50RHC,RVC,RHR,RVR,RHS,RVS,RDS Typical Single-Phase Line Voltage Power Connection CONNECT THE BLUE WIRE TO: H FOR HIGH SPEED FAN M FOR MEDIUM SPEED FAN L FOR LOW SPEED FAN BLU MEDIUM FACTORY SETTING H M L FAN MOTOR Fig.
PAGE 22
Table 5 — 50RHC,RVC Electrical Data 50RHC,RVC UNITS 018 024 030 036 041* 042 048 060 FLA HACR LRA RLA — — — — COMPRESSOR VOLTS-PHASE 60 Hz VOLTAGE MIN/MAX RLA LRA 208/230-1 265-1 208/230-1 265-1 208/230-3 460-3 208/230-1 265-1 208/230-3 460-3 208/230-1 265-1 208/230-3 460-3 208/230-1 208/230-3 460-3 575-3 208/230-1 208/230-3 460-3 575-3 208/230-1 208/230-3 460-3 575-3 208/230-1 208/230-3 460-3 575-3 197/254 239/292 197/254 239/292 197/254 414/506 197/254 239/292 197/254 414/506 197/254 239/2
PAGE 23
Table 6 — 50RHR,RVR Electrical Data 50RHR,RVR UNITS 006* 009 012 015 019 024 030 036 042 048 060 FLA HACR LRA RLA — — — — VOLTS-PHASE 60 Hz VOLTAGE MIN/MAX 208/230-1 265-1 208/230-1 265-1 208/230-1 265-1 208/230-1 265-1 208/230-1 265-1 208/230-1 265-1 208/230-3 460-3 208/230-1 265-1 208/230-3 460-3 208/230-1 265-1 208/230-3 460-3 208/230-1 208/230-3 460-3 575-3 208/230-1 208/230-3 460-3 575-3 208/230-1 208/230-3 460-3 575-3 197/254 239/292 197/254 239/292 197/254 239/292 197/254 239/292 197/254
PAGE 24
Table 7 — 50RHS,RVS,RDS Electrical Data 50RHS,RVS,RDS UNITS 015 018 024 030 036 042 048 060 070 FLA HACR LRA RLA — — — — VOLTS-PHASE 60 Hz VOLTAGE MIN/MAX 208/230-1 265-1 208/230-1 265-1 208/230-1 265-1 208/230-3 460-3 208/230-1 265-1 208/230-3 460-3 208/230-1 265-1 208/230-3 460-3 208/230-1 208/230-3 460-3 575-3 208/230-1 208/230-3 460-3 575-3 208/230-1 208/230-3 460-3 575-3 208/230-1 208/230-3 460-3 575-3 197/254 239/292 197/254 239/292 197/254 239/292 197/254 414/506 197/254 239/292 197/254
PAGE 25
Table 8 — 50RHC,RVC Blower Performance 50RHC,RVC RATED MIN FAN UNITS CFM CFM SPEED 0.
PAGE 26
Table 9 — 50RHR,RVR Blower Performance 50RHR,RVR UNITS RATED CFM MIN CFM 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 1600 1200 060 2000 1500 CFM FAN SPEED HI MED LO HI MED LO HI MED LO HI MED LO HI MED LO HI MED LO HI MED LO HI MED LO HI MED LO HI MED LO HI MED LO HI MED LO 0.
PAGE 27
Table 10 — 50RHS,RVS,RDS Blower Performance 50RHS,RVS,RDS RATED FAN UNITS AIRFLOW SPEED 015 500 018 600 024 800 030 1000 Hi Static 030 1000 036 1150 Hi Static 036 1150 042 1400 048 1600 060 2000 070 2300 Hi Med Low Hi Med Low Hi Med Low Hi Med Low HS Hi HS Med HS Low Hi Med Low HS Hi HS Med HS Low Hi Med Low Hi Med Low Hi Med Low Hi Med Low 0.
PAGE 28
Step 9 — Low Voltage Wiring THERMOSTAT CONNECTIONS — The thermostat should be wired directly to the Aquazone™ control board. See Fig. 19, 20, and 22. 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 13 F when using antifreeze in colder earth loop applications. See Fig. 24.
PAGE 29
DIP SWITCH BLOCK 1 (S1) — This set of switches offers the following options for D Control configuration: Performance Monitor (PM) — Set switch 1 to enable or disable performance monitor. To enable the PM, set the switch to ON. To disable the PM, set the switch to OFF. Compressor Relay Staging Operation — Switch 2 will enable or disable compressor relay staging operation. The compressor relay can be set to turn on with stage 1 or stage 2 call from the thermostat.
PAGE 30
Table 11 — DIP Switch Block S2 — Accessory 1 Relay Options ACCESSORY 1 RELAY OPTIONS Cycle with Fan Digital NSB Water Valve — Slow Opening OAD 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.
PAGE 31
Table 14 — Operating Limits — 50RHR,RHS,RVR,RVS,RDS Units AIR LIMITS Min. Ambient Air Rated Ambient Air Max. Ambient Air Min. Entering Air Rated Entering Air db/wb Max. Entering Air db/wb WATER LIMITS Min. Entering Water Normal Entering Water COOLING (F) 45 80 100 50 80/67 110/83 HEATING (F) 45 70 85 40 70 80 30 50-90 20 30-60 2. Check for cool air delivery at unit grille a few minutes after the unit has begun to operate. 3.
PAGE 32
Flow Regulation — Flow regulation can be accomplished 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 17-19. 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.
PAGE 33
Table 21 — Antifreeze Percentages by Volume Table 19 — 50RHS,RVS,RDS Coaxial Water Pressure Drop UNIT 50RHS,RVS,RDS 015 018 024 030 036 042 048 060 070 GPM 1.8 2.8 3.8 2.2 3.5 4.5 3.0 4.5 6.0 3.7 5.5 7.5 4.5 7.0 9.0 5.2 8.0 10.5 6.0 9.0 12.0 7.5 11.3 15.0 9.0 13.5 18.0 ANTIFREEZE WATER TEMPERATURE (F) 30 F 50 F 70 F 90 F Pressure Drop (psi) 0.6 0.5 0.5 0.5 1.0 0.9 0.8 0.8 1.5 1.4 1.3 1.2 0.7 0.7 0.6 0.6 1.3 1.2 1.1 1.1 1.8 1.8 1.6 1.5 0.6 0.6 0.5 0.5 1.1 1.1 1.0 0.9 1.8 1.7 1.5 1.5 0.8 0.8 0.7 0.7 1.
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Test Mode — To enter Test mode on C or D controls, cycle 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.
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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.
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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. To avoid fouled machinery and extensive unit clean-up, DO NOT operate units without filters in place.
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motor on a high platform such as a step ladder. Do not allow motor to hang by its power wires. 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 16.
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Table 25 — Troubleshooting FAULT Main Power Problems HEATING COOLING POSSIBLE CAUSE X X Green Status LED Off X HP Fault — Code 2 High Pressure X X X LP/LOC Fault — Code 3 Low Pressure/Loss of Charge FP1 Fault — Code 4 Water Freeze Protection X X X X X X X X X X X X FP2 Fault — Code 5 Air Coil Freeze Protection X X X X Condensate Fault — Code 6 Over/Under Voltage — Code 7 (Auto Resetting) X X X X X X X X Performance Monitor — Code 8 X FP1 and FP2 Thermistors — Code 9 X No Fault Code S
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Table 25 — Troubleshooting (cont) FAULT Only Compressor Runs HEATING COOLING POSSIBLE CAUSE X X Thermostat wiring X X Fan motor relay X X X X Fan motor Thermostat wiring X Reversing valve X X X Thermostat setup Thermostat wiring Dirty filter Reduced or no airflow in heating X Reduced or no airflow in cooling X X Leaky ductwork X X X X X X X X X Low refrigerant charge Restricted metering device Defective reversing valve Thermostat improperly located Unit undersized X X X X X Unit Does
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Copyright 2002 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 535-00057 Printed in U.S.A.
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50RHC,RVC,RHR,RHS,RVR,RVS,RDS START-UP CHECKLIST CUSTOMER:___________________________ JOB NAME: _______________________________________ MODEL NO.:___________________________ SERIAL NO.:____________________ DATE:_________ I.
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PSI SAT °F AIR COIL SUCTION °F °F COMPRESSOR EXPANSION VALVE COAX DISCHARGE °F LIQUID LINE °F °F PSI WATER IN PSI WATER OUT LOOK UP PRESSURE DROP IN TABLES 17-19 TO DETERMINE FLOW RATE COOLING CYCLE ANALYSIS PSI SAT °F AIR COIL °F SUCTION °F COMPRESSOR EXPANSION VALVE COAX DISCHARGE °F LIQUID LINE °F PSI WATER IN °F PSI WATER OUT LOOK UP PRESSURE DROP IN TABLES 17-19 TO DETERMINE FLOW RATE HEAT OF EXTRACTION (ABSORPTION) OR HEAT OF REJECTION = FLOW RATE (GPM) x TEMP. DIFF. (DEG.