Carrier Aquazone 50WC 007 Series Installation, Start-Up And Service Instructions Manual
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Carrier Aquazone 50WC 007 Series Installation, Start-Up And Service Instructions Manual

Carrier Aquazone 50WC 007 Series Installation, Start-Up And Service Instructions Manual

Compact water source heat pumps with puron advance refrigerant (r-454b)
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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• INSPECTION
• STORAGE
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 1 — Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . 7
• HORIZONTAL UNITS
• VERTICAL UNITS
• INSTALLATION GUIDELINES (ALL UNITS)
Step 2 — Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 7
• INSPECT UNIT
Step 3 — Locate Unit . . . . . . . . . . . . . . . . . . . . . . . . 11
• PROTECTION
Step 4 — Mount the Unit . . . . . . . . . . . . . . . . . . . . . . 11
• DUCT FLANGES
• HORIZONTAL UNITS
• VERTICAL UNITS
Step 5 — Check Duct System . . . . . . . . . . . . . . . . . 12
• HORIZONTAL SUPPLY AIR CONFIGURATION 
CONVERSION
Step 6 — Install Condensate Drain . . . . . . . . . . . . . 14
• HORIZONTAL UNITS
• VERTICAL UNITS.
Step 7 — Pipe Connections . . . . . . . . . . . . . . . . . . . 14
• WATER QUALITY GUIDELINES
• INSTALLING SUPPLY AND RETURN HOSE KIT
• UNITS WITH BOILERLESS HEAT CONTROL
• UNITS WITH WATERSIDE ECONOMIZER
Step 8 — Wire Field Power Supply . . . . . . . . . . . . . 17
• HIGH VOLTAGE WIRING
• LOW VOLTAGE, CONTROL WIRING
• ECM INTERFACE THERMOSTAT CONNECTIONS
• THERMOSTAT AND DDC SENSORS
• ADDITIONAL CONTROLS OPTIONS WIRING
Step 9 — Configure Unit Control Components . . . 24
• UNIT PROTECTION MODULE (UPM)
UPM Standard Safeties and Alarms . . . . . . . . . . . . 25
• HI AND LOW REFRIGERANT PRESSURE
PROTECTION
• WATER COIL FREEZE PROTECTION
• AIR COIL FREEZE PROTECTION
• HIGH CONDENSATE LEVEL SHUTDOWN
• INTELLIGENT ALARM RESET
• HARD LOCKOUT RESET
• OPTION CARD
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500458-01
with Puron
Installation, Start-Up, and
Service Instructions
Printed in U.S.A.
Form No. 50WC-2SI
Compact Water Source Heat Pumps
®
Advance Refrigerant (R-454B)
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
• CLEAN AIR COIL
Page
Set Blower Motor Speed . . . . . . . . . . . . . . . . . . . . . .54
• PERMANENT SPLIT CAPACITOR (PSC) MOTOR
• CONSTANT TORQUE (ECM) MOTOR
• CONSTANT AIRFLOW (ECM) MOTOR
System Flushing and Filling . . . . . . . . . . . . . . . . . . .62
System Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
• FLOW VERIFICATION
• FLOW REGULATION
• ANTIFREEZE
• FREEZE PROTECTION SELECTION
• START-UP
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
• ENVIRONMENT
• POWER SUPPLY
• UNIT STARTING CONDITIONS
Start-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . .64
• COOLING MODE START-UP
• HEATING MODE START-UP
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Unit Protection Module (UPM) . . . . . . . . . . . . . . . . .71
Constant CFM Dehumidification . . . . . . . . . . . . . . .71
Option Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Sequence of Operation of Units Without DDC
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
• STANDBY
• COOLING
• HOT GAS REHEAT WITH OPTION CARD (OPTIONAL)
• WATERSIDE ECONOMIZER WITH OPTION CARD
(OPTIONAL)
• AUXILIARY ELECTRIC HEAT (OPTIONAL)
• TWO-POSITION MOTORIZED ISOLATION VALVE
(2-WAY SOLENOID VALVE) (OPTIONAL)
• BOILERLESS HEAT WITH OPTION CARD
(OPTIONAL)
• DIFFERENTIAL PRESSURE SWITCH / FLOW SWITCH
(OPTIONAL)
• REFRIGERANT LEAK DETECTION SYSTEM
(OPTIONAL)
• COMPRESSOR RELAY (OPTIONAL)
• PUMP/VALVE RELAY (OPTIONAL)
Sequence of Operation for Units with TruVu DDC
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
• SCHEDULING
• INDOOR FAN
• COOLING OPERATION
• HEATING OPERATION
• WATERSIDE ECONOMIZER
Indoor Air Quality and Demand Control Ventilation . .77
Aquazone™
50WC 007-070
Pg 1
9-24
Replaces: 50WC-1SI

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Summary of Contents for Carrier Aquazone 50WC 007 Series

  • Page 1 Aquazone™ 50WC 007-070 Compact Water Source Heat Pumps ® with Puron Advance Refrigerant (R-454B) Installation, Start-Up, and Service Instructions CONTENTS System Checkout ......54 •...

  • Page 2: Table Of Contents

    Carrier-approved models installer or agency must use factory-authorized kits or accessories exclusively. Carrier bears no responsibility for the installation when servicing or repairing this product. Refer to the individual of any alternative auxiliary devices installed in the field. instructions packaged with the kits or accessories when installing.

  • Page 3: Pre-Installation

    IMPORTANT: Read the entire instruction manual before WARNING starting installation. Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation. There may be PRE-INSTALLATION more than one disconnect switch. Lockout/tagout all INSPECTION disconnect locations to alert others not to restore power until work is completed.
  • Page 4 – Design Revision (16) A = Initial Release Model Series (1-2) 50 = Packaged WSHP Unit Miscellaneous Options (15) – = None Tier (3-4) A = Waterside Economizer (WSE) WC = 1-Stage (Compact) B = A2L Leak Detection (LD) C = WSE + LD Cabinet Configuration (5) WATER CONNECTION Hydronic Options (14)
  • Page 5 Table 1 — Physical Data — 50WC (007-024) Units UNIT SIZE Scroll (208/230-v 3 Phase,460-v) Compressor Type (Qty 1) Rotary Rotary Rotary Rotary Rotary Rotary (208/230-v 1 Phase, 265-v) Max Water Working Pressure (psig/kPa) FAN MOTOR AND BLOWER PSC Fan Motor (hp) 0.10 0.10 0.10...
  • Page 6 Table 2 — Physical Data — 50WC (030-070) Units UNIT SIZE Scroll (208-230-v 3 Phase, 460-v) Compressor Type (Qty 1) Scroll Scroll Scroll Scroll Scroll Rotary (208-230-v 1 Phase, 265-v) Max Water Working Pressure (psig/kPa) FAN MOTOR AND BLOWER 0.75 (vertical 0.25 (vertical) 208/230-v, 460-v) PSC Fan Motor (hp)

  • Page 7: Installation

    Carrier’s recommended service clearances and for installation. See Tables 1 and 2 for unit physical data. installation instructions. Please refer to the Carrier Commercial WSHP Warranty Statement (document number 04-570008-01) HORIZONTAL UNITS for details on warranty exclusions regarding equipment, access, Horizontal units are designed for indoor installation only.
  • Page 8 Refrigeration Access Access Panels Water Control Electrical Connections Access Water In Condensate Drain Return Air Opening Right Hand Return Right Hand Return Front Left Side Right Hand Return Straight Through End Blow Water Connections (left discharge) (back discharge) Access Refrigeration Panels Access Water...
  • Page 9 Access Panels Access Panels Refrigeration Refrigeration Access Access Water Out Water Out Control Control Electrical Access Access Connections Condensate Drain Condensate Drain Water In Water In Left Hand Return Right Hand Return Return Air (Filter) View Front Right Side Front Left Side Water Connections Water Connections VERTICAL DIMENSIONS (in.)

  • Page 10: Vertical Unit

    Vertical Unit Left Return, Top Discharge Left Return, Top Discharge Blower Front Access 18 in. Minimum 24 in. Optimum Compressor and Electrical Front Access 24 in. Minimum 36 in. Optimum Side View Front View Horizontal Unit Left Return, Right Discharge Left Return, Back Discharge Blower Access 18 in.

  • Page 11: Step 3 - Locate Unit

    Step 3 — Locate Unit Locate the unit in an indoor area that allows easy removal of the filter and access panels, and has enough room for service personnel to perform maintenance or repair. Provide sufficient room to make fluid, electrical, and duct connection(s). If the unit is located in a confined space such as a closet, provisions must be made for return air to freely enter the space.

  • Page 12: Vertical Units

    usually placed on a plywood base isolated from the ceiling joists by additional layers of vibration absorbing mesh. In both cases, a 3/4 in. drain connected to this secondary pan should be run to an eave at a location that will be noticeable. CAUTION If the unit is located in a crawl space, the bottom of the unit must be at least 4-in.

  • Page 13: Horizontal Supply Air Configuration  Conversion

    If the unit will be installed in a new installation with new ductwork, the installation should be designed using current ASHRAE (American Society of Heating, Refrigerating, and Air- Conditioning Engineers) procedures for duct sizing. If the unit will be connected to an existing duct system, a check should be made to assure that the duct system has the capacity to handle the air required for the unit application.

  • Page 14: Step 6 - Install Condensate Drain

    Vertical configuration units are internally trapped from the factory. a second trap must NOT be included. Carrier recommends proper testing to assure the well water quality is suitable for use with water source equipment. In conditions an- Step 7 — Pipe Connections...
  • Page 15 Table 3 — Water Quality Guidelines CLOSED CONDITION HX MATERIAL OPEN LOOP AND RECIRCULATING WELL RECIRCULATING Scaling Potential — Primary Measurement Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below. pH/Calcium pH <...

  • Page 16: Installing Supply And Return Hose Kit

    Optional pressure-rated hose assemblies designed specifically for Refer to Step 9 on page 24 for Economizer configuration for use with Carrier units are available. Similar hoses can be obtained units with Option Card (units without factory installed TruVu™ from alternate suppliers. Supply and return hoses are fitted with controller).

  • Page 17: Step 8 - Wire Field Power Supply

    WSE Coil N.C. Motorized Fluid OUT 3-Way Valve N.O. Isolation Condenser Valve Coil EWT Sensor (optional) (field-installed) Fluid IN Fig. 17 — Waterside Economizer Diagram Power wiring to the heat pump should be enclosed in flexible Step 8 — Wire Field Power Supply conduit to minimize the transmission of vibration from the unit See Fig.

  • Page 18: Blower Motor

    Table 5 — 50WC without Electric Heat — PSC (Standard) Blower Motor Heat Electrical Data COMPRESSOR BLOWER MOTOR VOLTAGE TOTAL UNIT SIZE CONFIGURATION V/Ph/Hz MOCP MIN/MAX UNIT FLA 208-230/1/60 197/253 15.0 1.12 0.10 Vertical/Horizontal 265/1/60 238/292 12.0 1.99 0.10 208-230/1/60 197/253 20.0 1.12...
  • Page 19 Table 6 — 50WC without Electric Heat — Constant Torque ECM Blower Motor Electrical Data COMPRESSOR BLOWER MOTOR TOTAL UNIT UNIT VOLTAGE CONFIGURATION V/Ph/Hz MOCP SIZE MIN/MAX 208-230/1/60 197/253 15.0 0.25 Vertical/Horizontal 265/1/60 238/292 12.0 0.25 208-230/1/60 197/253 20.0 0.25 Vertical/Horizontal 265/1/60 238/292...
  • Page 20 Table 7 — 50WC without Electric Heat — Constant Airflow ECM Blower Motor Electrical Data COMPRESSOR BLOWER MOTOR TOTAL UNIT UNIT VOLTAGE CONFIGURATION V/Ph/Hz MOCP SIZE MIN/MAX 208-230/1/60 197/253 32.0 0.33 10.2 11.7 Vertical/Horizontal 265/1/60 238/292 28.0 0.33 10.6 208-230/1/60 197/253 39.0 0.33...
  • Page 21 Table 8 — 50WC with 5 kW Electric Heat — Constant Torque ECM Blower Motor Electrical Data (208/230-1-60 only) 5 kW EH Heater Element Unit Data Plate Values UNIT SIZE CONFIGURATION Watts AMPS 208-v 240-v 208-v 240-v 208-v 240-v 208-v 240-v Vertical 3.6 K...
  • Page 22 Table 11 — 50WC with 5 kW Electric Heat — Constant Airflow ECM Blower Motor Electrical Data (208/230-1-60 Only) 5 kW EH Heater Element Unit Data Plate Values UNIT SIZE CONFIGURATION Watts Amps 208-v 240-v 208-v 240-v 208-v 240-v 208-v 240-v Vertical 3.6 K...
  • Page 23 LOW VOLTAGE, CONTROL WIRING ECM INTERFACE THERMOSTAT CONNECTIONS Control wiring for units with PSC and Constant Torque blower • Y1 First Stage Compressor Operation motors are connected to a terminal block located in the unit • Y2 Second Stage Compressor Operation electrical box.

  • Page 24: Standard Construction

    TruVu DDC Controller Heater Contactor TruVu™ is a factory installed DDC control that requires the AUX Relay use of Carrier ZS or non-communicating sensors or the Carrier Electric Heating/Blower Relay TruVu™ Equipment Touch interface for space temperature 683 TruVu™ DDC sensing.

  • Page 25: Air Coil Freeze Protection

    LEGEND 1 — Compressor Contact Output 2 — High-Pressure Switch Connection 3 — Call for Compressor (Y1) 4 — Low Pressure Switch Connection 5 — Water Coil Freeze Connection (Freeze 1) 6 — UPM Status LED Indicator (Fault Status) 7 — Air Coil Freeze Connection (Freeze 2) 8 —...

  • Page 26: Toggle Function

    Low-Pressure Bypass Timer If the compressor is running and the low pressure switch opens, the controller will keep the compressor On for 120 seconds. After two minutes if the low-pressure switch remains open, the control- lers will shut down the compressor and enter a soft lockout. The compressor will not be energized until the low-pressure switch closes and the anti-short cycle time delay expires.

  • Page 27: Option Card

    The card has three primary functions: Table 16 — UPM Fault Blink Codes “Boilerless” Electric Heat Control Boilerless heat control is a means to control an auxiliary electric BLINKS FAULT FAULT CRITERIA heater on units that are connected to a water loop without a reliable None None All fault conditions normal.
  • Page 28 Cool Set Point Potentiometer Heat Set Point Potentiometer Operating Mode Dip Switch Entering Water Temperature H Signal Input O Signal Input Y Call Input LED Input Status Economizer Output “E_OUT” Hot Gas Reheat Output “H_OUT” Boilerless Control “W_OUT” Reversing Valve Output “O_OUT” Option Card Standoff LED Output Status FAN Output “G_OUT”...
  • Page 29 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE (HI) (MED) (LOW) 8733845309 Fig. 25 — Single Phase, PSC Motor, Standard Unit...
  • Page 30 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE (HI) (MED) (LOW) 8733845310 Fig. 26 — Single Phase, PSC Motor, Option Card (WSE, HGRH, Boilerless Heat)
  • Page 31 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE (HI) (MED) (LOW) 8733845373 Fig. 27 — Single Phase, PSC Motor, TruVu DDC...
  • Page 32 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733834015 Fig. 28 — Single Phase, Constant Torque ECM Motor, Standard Unit (1/2 to 1 Ton)
  • Page 33 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733834006 Fig. 29 — Single Phase, Constant Torque ECM Motor, Standard Unit (1-1/4 to 6 Tons)
  • Page 34 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE Fig. 30 — Single Phase, Constant Torque ECM Motor, Option Card (WSE, HGRH, Boilerless Heat, 1/2 to 1 Ton)
  • Page 35 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733834009 Fig. 31 — Single Phase, Constant Torque ECM Motor, Option Card (WSE, HGRH, Boilerless Heat, 1-1/14 to 6 Tons)
  • Page 36 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733834011 Fig. 32 — Single Phase, Constant Torque ECM Motor, E-Heat, Standard Unit...
  • Page 37 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAK 8733834013 Fig. 33 — Single Phase, Constant Torque ECM Motor, E-Heat, Option Card (WSE, HGRH, Boilerless Heat)
  • Page 38 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733839809 Fig. 34 — Single Phase, Constant Torque ECM Motor, TruVu DDC (1/2 to 1 Ton)
  • Page 39 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733839811 Fig. 35 — Single Phase, Constant Torque ECM Motor, TruVu DDC (1-1/4 to 6 Tons)
  • Page 40 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733839812 Fig. 36 — Single Phase, Constant Torque ECM Motor, E-Heat, TruVu DDC (2 - 6 Tons)
  • Page 41 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION TO ECM MOTOR CONDENSATE OVERFLOW FAULT BROWN OUT FAULT ADJUST NORM EVAPORATOR FREEZE CONDITION TEST REFRIGERANT LEAKAGE HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C 8733834007 Fig.
  • Page 42 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT TO ECM MOTOR LOW PRESSURE FAULT CONDENSER FREEZE CONDITION ADJUST NORM CONDENSATE OVERFLOW FAULT TEST BROWN OUT FAULT HGRH EVAPORATOR FREEZE CONDITION THERMOSTAT REFRIGERANT LEAKAGE R C G O Y1 Y2 W1 W2 H C 8733834010 Fig.
  • Page 43 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION TO ECM MOTOR CONDENSATE OVERFLOW FAULT BROWN OUT FAULT ADJUST NORM EVAPORATOR FREEZE CONDITION TEST REFRIGERANT LEAKAGE HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C 8733834012 Fig.
  • Page 44 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENDSER FREEZE CONDITION TO ECM MOTOR CONDENSATE OVERFLOW FAULT BROWN OUT FAULT ADJUST NORM EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C 8733834014 Fig.
  • Page 45 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE (HI) (MED) (LOW) 8733845311 Fig. 41 — Three Phase, PSC Motor, Standard Unit...
  • Page 46 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE (HI) (MED) (LOW) 8733845312 Fig. 42 — Three Phase, PSC Motor, Option Card (WSE, HGRH, Boilerless Heat)
  • Page 47 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE (HI) (MED) (LOW) 8733845374 Fig. 43 — Three Phase, PSC Motor, TruVu DDC...
  • Page 48 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733834018 Fig. 44 — Three Phase, Constant Torque ECM, Standard Unit...
  • Page 49 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733834021 Fig. 45 — Three Phase, Constant Torque ECM, Option Card (WSE, HGRH, Boilerless Heat)
  • Page 50 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE 8733839816 Fig. 46 — Three phase, Constant Torque ECM Motor, TruVu DDC...
  • Page 51 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION TO ECM MOTOR CONDENSATE OVERFLOW FAULT ADJUST BROWN OUT FAULT NORM EVAPORATOR FREEZE CONDITION TEST REFRIGERANT LEAKAGE HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C 8733834019 Fig.
  • Page 52 UPM STATUS LED - BLINK CODES TO ECM MOTOR HIGH PRESSURE FAULT LOW PRESSURE FAULT ADJUST CONDENSER FREEZE CONDITION NORM CONDENSATE OVERFLOW FAULT TEST HGRH BROWN OUT FAULT THERMOSTAT EVAPORATOR FREEZE CONDITION R C G O Y1 Y2 W1 W2 H C REFRIGERANT LEAKAGE 8733834022 Fig.
  • Page 53 Contact) [ ] VFD - VFD ENABLE/DISABLE WHITE S1-Rx Rnet + EQUIPMENT TOUCH S2-Tx BLACK Carrier TruVu DEVICE Rnet - S2-Rx STANDARD FACTORY INSTALLED COMPONENTS (INPUTS): Prog IN-2 - UNIVERSAL INPUT 2: Comm i-Vu Ready [ ] LWTS - LEAVING WATER TEMPERATURE SENSOR...

  • Page 54: Pre-Start-Up

    If a motor speed change is required, follow the instructions below: PRE-START-UP Disconnect power to the heat pump and follow all proper System Checkout lockout and tagout procedures to ensure that power is After completing the installation, and before energizing the unit, removed from the unit.
  • Page 55 CONSTANT AIRFLOW (ECM) MOTOR Passive Dehumidification: Reduces airflow during a cooling call when dehumidification is also required. This reduces the The 50WC units in 208/230-v, 265-v, or 460-v are available with a sensible heat ratio of the cooling coil and extends cooling run constant airflow ECM blower motor.
  • Page 56 Table 17 — 50WC Vertical Units (PSC Motor Performance) DEFAULT AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) FACTORY MODEL SPEED MOTOR 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 SETTING — — — — — —...
  • Page 57 Table 18 — 50WC Horizontal Units (PSC Motor Performance) DEFAULT AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) FACTORY MODEL SPEED MOTOR 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 SETTING — — — — — —...
  • Page 58 Table 19 — 50WC Vertical Units (Constant Torque Motor Performance) AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) DEFAULT FACTORY MODEL TAP NO. MOTOR SETTING 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 — — — —...
  • Page 59 Table 20 — 50WC Horizontal Units (Constant Torque Motor Performance) AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) DEFAULT FACTORY MODEL TAP NO. MOTOR SETTING 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 — — — —...
  • Page 60 Table 21 — 50WC Vertical Units (Constant Airflow Motor Performance) a,b,c DEFAULT AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) FACTORY MODEL FAN SPEED MOTOR 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 SETTING D - Low —...
  • Page 61 Table 22 — 50WC Horizontal Units (Constant Airflow Motor Performance) a,b,c DEFAULT AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) FACTORY MODEL FAN SPEED MOTOR 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 SETTING A - Low —...

  • Page 62: System Flow

    This fluctuation is normal and should be considered when System Flushing and Filling charging the system initially. Run the unit in either heating or Once the piping is complete, units require final purging and loop cooling for several minutes to condition the loop to a charging.

  • Page 63: Freeze Protection Selection

    14.0 12.0 10.0 Flow Rate (gpm) Fig. 53 — Water Pressure Drop Curve for Units With 2-Way Valve ANTIFREEZE Table 24 — Antifreeze Percentages by Volume In areas where leaving water temperatures drop below 40°F or where piping will be routed through areas subject to freezing, anti- MINIMUM TEMPERATURE FOR freeze is needed.

  • Page 64: Scroll Compressor Rotation

    If the suction pressure does not drop and the discharge pressure Table 25 — Operating Limits does not rise to normal levels: Turn off power to the unit. Install disconnect tag. FLUID LIMIT COOLING HEATING TYPE Reverse any two of the unit power leads. Minimum Ambient (°F) Reapply power to the unit and verify pressures are correct.
  • Page 65 Table 26 — 50WC007 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Water Temp Air Temp Suction Discharge Water Temp Air Temp FLUID TEMP FLOW Pressure Pressure Rise Drop Pressure Pressure Drop Rise (°F) (gpm/ton) (psig) (psig) (°F) (°F)
  • Page 66 Table 28 — 50WC012 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Water Temp Air Temp Suction Discharge Water Temp Air Temp FLUID TEMP FLOW Pressure Pressure Rise Drop Pressure Pressure Drop Rise (°F) (gpm/ton) (psig) (psig) (°F) (°F)
  • Page 67 Table 30 — 50WC018 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Water Temp Air Temp Suction Discharge Water Temp Air Temp FLUID TEMP FLOW Pressure Pressure Rise Drop Pressure Pressure Drop Rise (°F) (gpm/ton) (psig) (psig) (°F) (°F)
  • Page 68 Table 32 — 50WC030 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Water Temp Air Temp Suction Discharge Water Temp Air Temp FLUID TEMP FLOW Pressure Pressure Rise Drop Pressure Pressure Drop Rise (°F) (gpm/ton) (psig) (psig) (°F) (°F)
  • Page 69 Table 34 — 50WC042 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Water Temp Air Temp Suction Discharge Water Temp Air Temp FLUID TEMP FLOW Pressure Pressure Rise Drop Pressure Pressure Drop Rise (°F) (gpm/ton) (psig) (psig) (°F) (°F)
  • Page 70 Table 36 — 50WC060 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Water Temp Air Temp Suction Discharge Water Temp Air Temp FLUID TEMP FLOW Pressure Pressure Rise Drop Pressure Pressure Drop Rise (°F) (gpm/ton) (psig) (psig) (°F) (°F)

  • Page 71: Operation

    When the terminal W is upon power up. energized, it will enable Electric heater and disable compressor (Y). Unit Protection Module (UPM) All Carrier WSHP units feature an advanced UPM which imple- TWO-POSITION MOTORIZED ISOLATION VALVE...
  • Page 72 Fig. 54 — UPM Sequence of Operations...
  • Page 73 Fig. 55 — ECM Control Board Dehumidification Options Sequence of Operation...
  • Page 74 speed control and intelligent alarming, which will differ from Sequence of Operation for Units with TruVu the units with UPM board only. Below is an overview of the DDC Controller different features for the TruVu™ controls. See Fig. 56 for Tru- Units with TruVu™...
  • Page 75 SCHEDULING INDOOR FAN Time periods can be configured to schedule the transitions from Fan Modes occupied to unoccupied operation. The time periods control the You can configure the indoor fan to operate in any one of 3 fan space temperature to occupied heating and cooling setpoints. The modes: unit operates continuously in the Occupied mode until a time •...

  • Page 76: Cooling Operation

    state. When the fan is commanded to run (ON), the fan status is When the indoor relative humidity becomes greater than the dehu- checked and verified to match the commanded state. If the fan sta- midification setpoint, a dehumidification demand is acknowl- tus is not on, then a fan status alarm is generated after 1 minute edged.

  • Page 77: Waterside Economizer

    compressor fault condition exists, the valve only operates to sup- Heating plement the heat provided by the compressor if the space tempera- In addition, the control modulates the water valve if the entering ture falls more than 1°F below the desired heating setpoint. The source water loop temperature is suitable for heating (at least 5°F valve is controlled so the SAT does not exceed the Maximum above space temperature) and heat is required.

  • Page 78: Compressor Status

    2-Position OA Damper restart after this time period. If the fault occurs 2 times (configu- rable on UPM) within 60 minutes the UPM will put the unit into Alternatively, the controller can be configured to operate as a ven- hard lockout requiring manual reset. Manual reset can be accom- tilation damper in a 2-position ventilation mode to provide the plished remotely when the UPM is configured for the reset meth- minimum ventilation requirements during occupied periods.
  • Page 79 Source Water Temperature Alarm Source Water Linkage Failure Alarm (if Source Water Link- age was active) The control has 4 configurable alarm limits for source water temperature. The control verifies that the water temperature is The control generates a Source Water Linkage failure alarm if within operating range (between high and low limits) for the Linkage fails after once being active.

  • Page 80: Service

    within configured ranged (between high and low limits) for the PRESENCE OF FIRE EXTINGUISHER specific operating mode (heating or cooling) before energizing the If any hot work is to be conducted on the refrigerating equipment compressor. or any associated parts, appropriate fire extinguishing equipment Entering Water Temperature Alarm shall be available to hand.

  • Page 81: Cabling

    Proper water treatment can minimize tube fouling and pitting. If protected against being so corroded. such conditions are anticipated, water treatment analysis is recommended. Refer to the Carrier System Design Manual, Part 5, DETECTION OF FLAMMABLE REFRIGERANTS for general water conditioning information.

  • Page 82: Gravity Flow Method

    Gas Vent Priming CAUTION Pump Conn. Globe Va lves Follow all safety codes. Wear safety glasses and rubber gloves Suction when using inhibited hydrochloric acid solution. Observe and Supply Pump follow acid manufacturer’s instructions. Support 1" Pipe Clean condensers with an inhibited hydrochloric acid solution. The acid can stain hands and clothing, damage concrete, and, Condenser without inhibitor, damage steel.

  • Page 83: Recovery

    shall be as short as possible to minimize the amount of re- transfer note arranged. Do not mix refrigerants in recovery units frigerant contained in them. and especially not in cylinders. • Cylinders shall be kept in an appropriate position accord- If compressors or compressor oils are to be removed, ensure that ing to the instructions.
  • Page 84 Remove Upper Panel Open Access Door Disconnect Electrical Power and Remove Brace Lift Off Access Panel Slide Out and Remove Screws to Full Access to Evaporator Pivot Out and Remove Remove Blower Full Side Panel Disconnect Connecting Pipes Fig. 59 — Evaporator Coil Service on Vertical Units...

  • Page 85: Blower Assembly Service And Removal

    when installation constraints prevent the use of the slide-out fea- Blower Assembly Service and Removal ture, follow these steps: Disconnect the motor power wires from the motor terminals CAUTION before removing the motor from the unit. Before attempting to remove fan motors or motor mounts, Shut off the main power supply to the unit and apply lock- place a piece of plywood over evaporator coils to prevent coil out/tag-out procedures.

  • Page 86: Horizontal Configuration Units

    Remove the three screws located on the motor side of the Horizontal Configuration Units blower assembly. See Fig. 61. For horizontal configurations, if removal of the blower assembly becomes necessary, follow these steps: Twist and pull blower back from welded pins located on opposite side to the motor, near the evaporator.

  • Page 87: Troubleshooting

    UNIT PROTECTION MODULE (UPM) Causes of TXV Failure All Carrier WSHPS are equipped with a 24-v low voltage control The most common causes of TXV failure are: circuit. Units are selectable to be provided with no controls for...
  • Page 88 Diagnostics Digital thermometer, preferably insulated, with wire leads that can be connected directly to the tubing. Several tests may be required to determine if a TXV has failed. The following tools may be required for testing: Refrigerant pressure-temperature chart for the refrigerant Refrigerant gauge manifold compatible with the refrigerant in used.
  • Page 89 To determine that a TXV has failed, verify the following: CAUTION • The suction pressure is low and the valve is non- responsive. Always recover the refrigerant from the system with suitable • The TXV sensing bulb can be removed from the suction approved tools, recovery equipment, and practices prior to at- line and warmed by holding the bulb in your hand.
  • Page 90 Table 38 — Compressor Characteristics Cold Winding Resistance Values (± 10%) MODEL VOLTAGE Single Phase Three Phase CAPACITOR (μF/V) T1-T2 T2-T3 T3-T1 208-230/1/60 5.50 6.64 — — — 15µF/370-v 50WC007 265/1/60 7.84 5.59 — — — 15µF/440-v 208-230/1/60 3.78 2.91 —...
  • Page 91 Table 39 — Troubleshooting FAULT COOLING HEATING CHECK POSSIBLE CAUSE SOLUTION High Pressure fault - no or low Check water valves and/or pumps for proper operation. water flow Check for water coil blockage. High Pressure fault - high water Check water temperature - is it in range? temperature High Pressure fault - fouled or Check for proper flow rate and water temperature, but low...
  • Page 92 Table 39 — Troubleshooting (cont) FAULT COOLING HEATING CHECK POSSIBLE CAUSE SOLUTION Check supply voltage from the fan relay to the motor. Check that all motor wires are secure. With power off spin the motor Fan relay energized Faulty motor shaft - noise, resistance or uneven motion can be signs of motor failure.
  • Page 94 8733848655 © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500458-01 Printed in U.S.A. Form No. 50WC-2SI Pg 94 9-24 Replaces: 50WC-1SI...

  • Page 95: Start-Up Checklist

    50WC START-UP CHECKLIST (Remove and use for job file.) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preceding sections of this Installation, Start-Up, and Service Instructions document.

  • Page 96: Heating Cycle Analysis

    SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE (DEG F) *Use 500 for water, 485 for antifreeze. 8733848655 © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500458-01 Printed in U.S.A.

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