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

Carrier Aquazone 50WC 007 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 . . . . . . . . . . . . . . . . . . . 3
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500342-01
with Puron
Installation, Start-Up, and
Service Instructions
Printed in U.S.A.
Form 50WC-1SI
Compact Water Source Heat Pumps
®
Advance Refrigerant (R-454B)
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
• CLEAN AIR COIL
Page
Set Blower Motor Speed . . . . . . . . . . . . . . . . . . . . . .46
• PERMANENT SPLIT CAPACITOR (PSC) MOTOR
• CONSTANT TORQUE (ECM) MOTOR
• CONSTANT AIRFLOW (ECM) MOTOR
System Flushing and Filling . . . . . . . . . . . . . . . . . . .54
System Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
• FLOW VERIFICATION
• FLOW REGULATION
• ANTIFREEZE
• FREEZE PROTECTION SELECTION
• START-UP
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
• ENVIRONMENT
• POWER SUPPLY
• UNIT STARTING CONDITIONS
Start-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . .56
• COOLING MODE START-UP
• HEATING MODE START-UP
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Power Up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Unit Protection Module (UPM) . . . . . . . . . . . . . . . . .63
Option Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Sequence of Operation of Units Without DDC
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
• STANDBY
• COOLING
• HOT GAS REHEAT WITH OPTION CARD (OPTIONAL)
• WATERSIDE ECONOMIZER WITH OPTION CARD
(OPTIONAL)
• AUXILARY 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
• SCHEDULING
• INDOOR FAN
• COOLING OPERATION
• HEATING OPERATION
• WATERSIDE ECONOMIZER
Indoor Air Quality and Demand Control Ventilation . .68
• COMPRESSOR STATUS
• DEMAND LIMITING
Pg 1
Aquazone™
50WC 007-070
4-24
Replaces: NEW

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  • 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 ......46 •...

  • Page 2: Table Of Contents

    • REMOTE DISABLE • DETECTION OF FLAMMABLE REFRIGERANTS • ALARMS Compressor ....... 72 SERVICE .
  • Page 3 Carrier bears no responsibility for the installation of maintenance, or use can cause explosion, fire, electrical shock or any alternative auxiliary devices installed in the field. other conditions which may cause personal injury or property damage.
  • 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 (208-230V 3 Phase, 460V) Compressor Type (Qty 1) Rotary Rotary Rotary Rotary Rotary Rotary (208-230V 1 Phase, 265V) Max Water Working Pressure (psig/kPa) FAN MOTOR AND BLOWER PSC Fan Motor (HP) 0.25 Constant Torque Fan 0.33 (Vertical 208/230V, 265V)
  • Page 6 Table 2 — Physical Data — 50WC (030-070) Units UNIT SIZE Scroll (208-230V 3 Phase, 460V) Compressor Type (Qty 1) Scroll Scroll Scroll Scroll Scroll Rotary (208-230V 1 Phase, 265V) Max Water Working Pressure (PSIG/kPa) FAN MOTOR AND BLOWER 0.75 (Vertical 0.25 (Vertical) 208/230V, 460V) PSC Fan Motor (HP)
  • Page 7 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 Access Refrigeration Panels Access Water Control Electrical Connections Access Water In Condensate Return Air Opening Drain Right Hand Return Right Hand Return Right Hand Return Left Water Straight Through End Blow Access Refrigeration Panels Access Water Control Electrical Connections Access Return Air Opening Water In Condensate...
  • Page 9 Access Panels Access Panels Refrigeration Refrigeration Access Access Water Out Water Out Electrical Connections Condensate Drain Condensate Drain Water In Water In Left Hand Return Right Hand Return Return Air (Filter) View Right Water Left Water VERTICAL DIMENSIONS (in.) e,f,g DISCHARGE WATER 19.0...
  • Page 10 Vertical Unit Left Return, Top Discharge Left Return, Top Discharge Blower Front Accesses 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 Accesses 18 in.
  • Page 11 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 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 CAUTION Do not connect discharge ducts directly to the blower outlet. The factory filter rack should be left in place on a free return system. 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.
  • Page 14 A second trap must not be included. Carrier recommends proper testing to assure the well water quality The horizontal unit should be pitched approximately 1/4 in. to- is suitable for use with water source equipment. In conditions an-...
  • 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 Optional pressure-rated hose assemblies designed specifically for tion Card (units without factory installed TruVu controller). use with Carrier units are available. Similar hoses can be obtained Refer to the TruVu controller section of this manual for configur- from alternate suppliers. Supply and return hoses are fitted with...
  • Page 17 WSE Coil N.C. Motorized Fluid OUT 3 Way Valve N.O. Condenser Isola on EWT sensor coil valve (field installed) (op onal) Fluid IN Fig. 17 — Waterside Economizer Diagram system performance or damage to the heat pump. All field wiring Step 8 —...
  • Page 18 Table 5 — 50WC without Electric Heat — PSC (Standard) Blower Motor Heat Electrical Data 50WC COMPRESSOR BLOWER MOTOR VOLTAGE TOTAL UNIT CONFIGURATION V/Ph/Hz MOCP MIN/MAX UNIT FLA SIZE 208-230/1/60 197/253 15.0 1.12 0.10 50WC007 Vertical/Horizontal 265/1/60 238/292 12.0 1.99 0.10 208-230/1/60 197/253...
  • Page 19 Table 6 — 50WC without Electric Heat — Constant Torque ECM Blower Motor Electrical Data 50WC COMPRESSOR BLOWER MOTOR TOTAL UNIT VOLTAGE UNIT CONFIGURATION V/Ph/Hz MOCP MIN/MAX SIZE 208-230/1/60 197/253 15.0 0.25 50WC007 Vertical/Horizontal 265/1/60 238/292 0.25 208-230/1/60 197/253 20.0 0.25 50WC009 Vertical/Horizontal...
  • Page 20 Table 7 — 50WC without Electric Heat — Constant Airflow ECM Blower Motor Electrical Data 50WC COMPRESSOR BLOWER MOTOR TOTAL UNIT VOLTAGE UNIT CONFIGURATION V/Ph/Hz MOCP MIN/MAX SIZE 208-230/1/60 197/253 34.5 0.33 10.1 11.5 50WC015 Vertical/Horizontal 265/1/60 238/292 0.33 10.6 208-230/1/60 197/253 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 208V 240V 208V 240V 208V 240V 208V 240V Vertical 3.6k...
  • Page 22 Table 11 — 50WC with 5 kW Electric Heat — Constant Airflow ECM Blower Motor Electrical Data (208/230-1-60 Only) 5kW EH HEATER ELEMENT UNIT DATA PLATE VALUES UNIT SIZE CONFIGURATION WATTS AMPS 208V 240V 208V 240V 208V 240V 208V 240V Vertical 3.6k 4.8k...
  • 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 TruVu DDC Controller OPTIONAL COMPONENTS TruVu is a factory installed DDC control that requires  Component the use of Carrier ZS or non-communicating sensors or the Compressor Monitor Relay Carrier TruVu Equipment touch interface for space temperature Blower Monitor Relay sensing.
  • Page 25 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 IMPORTANT: If 24 VAC output is needed R must be wired to ALR-COM terminal; 24 VAC will be available to the ALR-OUT terminal when the unit is in the alarm condition. Test Mode A test DIP switch is provided to reduce all time delays settings to 10 seconds during troubleshooting or verification of unit operation.
  • Page 27 heat injection source. The option card features a potentiometer to Table 16 — UPM DIP Switch Selectable Positions configure a water loop heat setpoint (Item 2, Fig. 24, Heat Set Point Potentiometer). When the water loop (EWT) drops below FACTORY the specified setpoint and there is a call for heating the compressor TOGGLE FUNCTION...
  • 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) 8733834003 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) 8733834008 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 8733834006 Fig. 27 — Single Phase, Constant Torque ECM Motor, Standard Unit...
  • 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 8733834009 Fig. 28 — Single Phase, Constant Torque ECM Motor, Option Card (WSE, HGRH, Boilerless Heat)
  • 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 8733834011 Fig. 29 — Single Phase, Constant Torque ECM Motor, E-Heat, Standard Unit...
  • 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 8733834013 Fig. 30 — Single Phase, Constant Torque ECM Motor, E-Heat, Option Card (WSE, HGRH, Boilerless Heat)
  • Page 35 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 36 UPM STATUS LED - BLINK CODES TO ECM MOTOR HIGH PRESSURE FAULT LOW PRESSURE FAULT ADJUST NORM CONDENSER FREEZE CONDITION TEST CONDENSATE OVERFLOW FAULT HGRH BROWN OUT FAULT THERMOSTAT EVAPORATOR FREEZE CONDITION R C G O Y1 Y2 W1 W2 H C REFRIGERANT LEAKAGE 8733834010 Fig.
  • Page 37 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT CONDENSER FREEZE CONDITION CONDENSATE OVERFLOW FAULT BROWN OUT FAULT TO ECM MOTOR EVAPORATOR FREEZE CONDITION REFRIGERANT LEAKAGE ADJUST NORM TEST HGRH THERMOSTAT R C G O Y1 Y2 W1 W2 H C 8733834012 Fig.
  • Page 38 UPM STATUS LED - BLINK CODES TO ECM MOTOR HIGH PRESSURE FAULT LOW PRESSURE FAULT ADJUST CONDENSER FREEZE CONDITION NORM CONDENSATE OVERFLOW FAULT TEST BROWN OUT FAULT HGRH EVAPORATOR FREEZE CONDITION THERMOSTAT R C G O Y1 Y2 W1 W2 H C REFRIGERANT LEAKAGE 8733834014 Fig.
  • 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 (HI) (MED) (LOW) 8733834017 Fig. 35 — Three Phase, PSC Motor, Standard Unit...
  • 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 (HI) (MED) (LOW) 8733834020 Fig. 36 — Three Phase, PSC Motor, Option Card (WSE, HGRH, Boilerless Heat)
  • Page 41 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. 37 — Three Phase, Constant Torque ECM Motor, Standard Unit...
  • Page 42 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. 38 — Three Phase, Constant Torque ECM Motor, Option Card (WSE, HGRH, Boilerless Heat)
  • Page 43 UPM STATUS LED - BLINK CODES HIGH PRESSURE FAULT LOW PRESSURE FAULT TO ECM MOTOR CONDENSER FREEZE CONDITION 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 44 UPM STATUS LED - BLINK CODES TO ECM MOTOR HIGH PRESSURE FAULT LOW PRESSURE FAULT ADJUST NORM CONDENSER FREEZE CONDITION 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 45 [ ] VFD - VFD ENABLE/DISABLE S1-Rx WHITE Rnet + S2-Tx SENSOR S2-Rx BLACK Carrier TruVu Rnet - STANDARD FACTORY INSTALLED COMPONENTS (INPUTS): Prog IN-1 - UNIVERSAL INPUT 1: Comm i-Vu Ready [ ] SATS - SUPPLY AIR TEMPRATURE SENSOR...
  • Page 46 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 47 CONSTANT AIRFLOW (ECM) MOTOR Passive Dehumidification: Reduces airflow during a cooling call when dehumidification is also required. This reduces the The 50WC units in 208V, 230V, 265V, or 460V are available with sensible heat ratio of the cooling coil and extends cooling run a constant airflow ECM blower motor.
  • Page 48 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 49 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 50 Table 19 — 50WC Vertical Units (Constant Torque Motor Performance) DEFAULT AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) FACTORY MODEL TAP # 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 51 Table 20 — 50WC Horizontal Units (Constant Torque Motor Performance) DEFAULT AIRFLOW (cfm) AT EXTERNAL STATIC PRESSURE (in. wg) FACTORY MODEL TAP # 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 52 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 53 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 54 Loop static pressure will fluctuate with the seasons. Pressures will System Flushing and Filling be higher in the winter months than during the warmer months. Once the piping is complete, units require final purging and loop This fluctuation is normal and should be considered when charging.
  • Page 55 14.0 12.0 10.0 Flow Rate (gpm) Fig. 45 — 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 56 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 57 Table 26 — 50WC007 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Air Temp Suction Discharge Air Temp FLUID TEMP FLOW Water Temp Water Temp Pressure Pressure Drop Pressure Pressure Rise (°F) (gpm/ton) Rise °F Drop °F (psig) (psig) °F...
  • Page 58 Table 28 — 50WC012 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Air Temp Suction Discharge Air Temp FLUID TEMP FLOW Water Temp Water Temp Pressure Pressure Drop Pressure Pressure Rise (°F) (gpm/ton) Rise °F Drop °F (psig) (psig) °F...
  • Page 59 Table 30 — 50WC018 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Air Temp Suction Discharge Air Temp FLUID TEMP FLOW Water Temp Water Temp Pressure Pressure Drop Pressure Pressure Rise (°F) (gpm/ton) Rise °F Drop °F (psig) (psig) °F...
  • Page 60 Table 32 — 50WC030 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Air Temp Suction Discharge Air Temp FLUID TEMP FLOW Water Temp Water Temp Pressure Pressure Drop Pressure Pressure Rise (°F) (gpm/ton) Rise °F Drop °F (psig) (psig) °F...
  • Page 61 Table 34 — 50WC042 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Air Temp Suction Discharge Air Temp FLUID TEMP FLOW Water Temp Water Temp Pressure Pressure Drop Pressure Pressure Rise (°F) (gpm/ton) Rise °F Drop °F (psig) (psig) °F...
  • Page 62 Table 36 — 50WC060 Typical Unit Operating Pressures and Temperatures COOLING HEATING ENTER WATER Suction Discharge Air Temp Suction Discharge Air Temp FLUID TEMP FLOW Water Temp Water Temp Pressure Pressure Drop Pressure Pressure Rise (°F) (gpm/ton) Rise °F Drop °F (psig) (psig) °F...
  • Page 63 All Carrier WSHP units feature an advanced UPM which imple- ments all the critical equipment safeties and allows for continuous BOILERLESS HEAT WITH OPTION CARD (OPTIONAL) safe and reliable operation.
  • Page 64 Fig. 46 — UPM Sequence of Operations...
  • Page 65 intelligent alarming, which will differ from the units with UPM Sequence of Operation for Units with TruVu board only. Below is an overview of the different features for DDC Controller the TruVu controls. See Fig. 47 for TruVu Control Board over- Units with TruVu DDC controller still feature a UPM board for view.
  • Page 66 SCHEDULING • Continuous (default) - intermittent operation during unoc- cupied periods and continuous during occupied periods Time periods can be configured to schedule the transitions from • Always on - operates the fan continuously during both oc- occupied to unoccupied operation. The time periods control the cupied and unoccupied periods space temperature to occupied heating and cooling setpoints.
  • Page 67 COOLING OPERATION NOTE: During cooling mode, the unit cools and dehumidifies, and disables the reheat coil. However, once the call for cooling has Space Temperature Control been satisfied and there is still a call for dehumidification, the unit The TruVu operates 1 or 2 stages of compression to maintain the continues to operate in the reheat mode.
  • Page 68 failure occurs. Unless a compressor fault condition exists, the 2-position Waterside Economizer Control valve only opens to supplement the heat provided by the compres- 2-Position Waterside Economizer Control has the capability to sor, if the space temperature falls more than 1°F below the desired control a NO or NC, 2-position water valve to control source wa- heating setpoint.

  • Page 69: Remote Disable

    COMPRESSOR STATUS disabled. The unit will automatically restart after this time period. If the fault occurs 2 times (configurable on UPM) within 60 min- The TruVu provides a status input to monitor the compressor oper- utes the UPM will put the unit into hard lockout requiring manual ation.
  • Page 70 Supply Air Temperature Alarm Airside Linkage Failure Alarm (if Airside Linkage was active) The control has 2 configurable alarm limits for supply air tempera- ture. The control verifies that the supply air temperature is within The control generates an Airside Linkage failure alarm if Linkage operating range (between high and low limits) when the compres- fails after once being active.

  • Page 71: Service

    temperature rises above or falls below the appropriate limits, and flammable hazards or ignition risks. “No Smoking” signs shall be lasts for more than 15 seconds, an alarm is generated and the com- displayed. pressor shuts down. VENTILATED AREA Return Air Temperature Alarm (if RAT sensor is field Ensure that the area is in the open or that it is adequately ventilated provided) before breaking into the system or conducting any hot work.

  • Page 72: Condensate Drain Pans

    Refer to the Carrier System Design Manual, Part 5, are inherently resistant to being corroded or are suitably for general water conditioning information.

  • Page 73: Forced Circulation Method

    The refrigerant charge shall be recovered into the correct recovery Fill condenser with cylinders if venting is not allowed by local and national codes. For cleaning solution. Do Pail appliances containing flammable refrigerants, the system shall be not add solution purged with oxygen-free nitrogen to render the appliance safe for more rapidly than vent can exhaust...

  • Page 74: Air Coil Fan Motor Removal

    UNIT PROTECTION MODULE (UPM) A cracked, broken, or damaged sensing bulb or capillary can All Carrier WSHPS are equipped with a 24V low voltage control be caused by excessive vibration of the capillary during ship- circuit. Units are selectable to be provided with no controls for ping or unit operation.
  • Page 75 Symptoms • Confirm that there is proper water flow and water tempera- ture in the heating mode. The symptoms of a failed TXV can be varied and will include one or more of the following: • Confirm that there is proper airflow and temperature in the cooling mode.
  • Page 76 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 77 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/370V 50WC007 265/1/60 7.84 5.59 — — — 15µF/440V 208-230/1/60 3.78 2.91 —...
  • Page 78 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 79 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 82 © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500342-01 Printed in U.S.A. Form 50WC-1SI Pg 82 4-24 Replaces: NEW...

  • Page 83: 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 84 SUBCOOLING = DISCHARGE SATURATION TEMPERATURE – LIQUID LINE TEMPERATURE (DEG F) *Use 500 for water, 485 for antifreeze. © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500342-01 Printed in U.S.A.

This manual is also suitable for:

Aquazone 50wc 009Aquazone 50wc 012Aquazone 50wc 015Aquazone 50wc 018Aquazone 50wc 024Aquazone 50wc 030 ... Show all

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