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GW Series
Water- -to- -Water Geothermal Heat Pump
Sizes 024, 036, 048, 060, 072, 120
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
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Installation Instructions
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Information in these installation instructions pertains only to GW
series units.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
1
conditions which may cause death, personal injury, or property
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damage. Consult a qualified installer, service agency, or your
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distributor or branch for information or assistance. The qualified
installer or agency must use factory- -authorized kits or accessories
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when modifying this product. Refer to the individual instructions
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packaged with the kits or accessories when installing.
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Follow all safety codes. Wear safety glasses, protective clothing,
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and work gloves. Use quenching cloth for brazing operations.
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Have fire extinguisher available. Read these instructions
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thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
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current editions of the National Electrical Code ( NEC ) NFPA 70.
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In Canada, refer to current editions of the Canadian electrical code
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CSA 22.1.
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Recognize safety information. This is the safety- -alert symbol
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When you see this symbol on the unit and in instructions or
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manuals, be alert to the potential for personal injury. Understand
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these signal words; DANGER, WARNING, and CAUTION. These
words are used with the safety- -alert symbol. DANGER identifies
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the most serious hazards which will result in severe personal injury
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or death. WARNING signifies hazards which could result in
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personal injury or death. CAUTION is used to identify unsafe
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practices which would result in minor personal injury or product
and property damage. NOTE is used to highlight suggestions
which will result in enhanced installation, reliability, or operation.
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.
!
WARNING
WARNING
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors.
mixtures of air or gases containing
oxygen can lead to an explosion.
! !
Pressurized
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Table of Contents
Related Manuals for Carrier GW Series
Summary of Contents for Carrier GW Series
-
Page 1: Table Of Contents
GW Series Water- -to- -Water Geothermal Heat Pump Sizes 024, 036, 048, 060, 072, 120 Installation Instructions NOTE: Read the entire instruction manual before starting the Information in these installation instructions pertains only to GW installation. series units. SAFETY CONSIDERATIONS... -
Page 2: Installation Recommendations
25_F to 110_F. must be reported to the carrier within 24 hours of receipt. Safety devices are built into each unit to provide the maximum Location / Clearance system protection possible when properly installed and maintained. -
Page 3: Application Considerations
APPLICATION CONSIDERATIONS Typical Load Side Applications Automatic chemical feeders must never be installed upstream of the unit. An external bypass should be installed to avoid There are many load side applications for which the over- -flowing the heat exchanger to prevent coil erosion. The pool water- -to- -water heat pump/ liquid chiller is ideally suited. -
Page 4: Well Water Systems
Well Water Systems IMPORTANT: Table 1 must be consulted for water quality Water quantity should be plentiful, between 1.5 and 3.0 gpm per requirements when using open loop systems. A water sample must ton of cooling, and of good quality. To avoid the possibility of be obtained and tested, with the results compared to the table. - Page 5 Table 1 – Water Quality Requirements for Open- -Loop Geothermal Heat Pump System Water Quality Parameter HX Material Closed Recirculating Open Loop and Recirculating Well Scaling Potential - Primary Measurement Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below: pH/Calcium Hardness pH <7.5 and Ca Hardness <100ppm Method...
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Page 6: Installation
INSTALLATION PIPING Supply and return piping must be as large as the unit connections The Water- -to- -Water series unit should be mounted level on a on the heat pump (larger on long runs). vibration absorbing pad slightly larger than the base to minimize vibration transmission to the building structure. -
Page 7: Electrical
ELECTRICAL SAFETY DEVICES AND UPM CONTROLLER WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label. - Page 8 A14121 Fig. 5 - - Freeze Protection Sensor Location CAUTION A14123 UNIT DAMAGE AND/OR OPERATION HAZARD Fig. 7 - - Condensate Overflow Protection Sensor Location Failure to follow this caution may result in unit damage and/or improper equipment operation. UPM Board Factory Default Settings If unit is employing a fresh water system (no anti- -freeze protection), it is extremely important to have the Freeze1 26°F...
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Page 9: Sequence Of Operation
S MALFUNCTION OUTPUT: Alarm output is Normally Open between the thermal expansion valve and evaporator coil as (NO) dry contact. If pulse is selected the alarm output will be shown in Fig. 6. pulsed. The fault output will depend on the dip switch setting for If temperature drops below or remains at the freeze limit trip for ”ALARM”. - Page 10 START RESET ON R RESET ON R = 24VAC Y1 = ON POWER/ SWITCHES/SENSOR CLEAR FAULTS STATUS CHECK BLINK CODE ON STATUS LED COUNTER SOFT LOCKOUT V > 18VAC NEEDED? RECORD ALARM START COUNTER (IF APPLICABLE) LOCKOUT CAN BE SET COUNT = 2 TO 4 VIA DIP SWITCH HPC =...
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Page 11: Heat Recovery Package
A14175 Fig. 9 - - Heat Recovery Package HEAT RECOVERY PACKAGE HR Water Piping The Heat Recovery package is a factory mounted option. It consists of a forced pumped unit that employs a circulating pump All hot water piping MUST be a minimum of 3/8” O.D. copper to move water through a double wall/ vented heat exchanger and tube to a maximum distance of 15 feet. -
Page 12: Initial Start- -Up
INITIAL START- - UP UNIT START- - UP NOTE: A unit Start- -Up checklist is included in the unit packet. CAUTION Complete the Checklist and place it in the customer file at your dealership. UNIT DAMAGE AND/OR OPERATION HAZARD 1. Open all water valves to the full open position. 2. -
Page 13: Boiler Mode
CHILLER MODE Cooling Mode Operating Pressures (PSIG) (R --- 410A units --- full load) Entering Source Condenser Temperature ° F Entering Fluid 75° F 85° F 95° F Temp ° F Suction Discharge Discharge Discharge Suction Pressure Suction Pressure Pressure Pressure Pressure Pressure... -
Page 14: Troubleshooting
TROUBLESHOOTING Problem Possible Cause C hecks and Corrections Power Supply Off Apply power, close disconnect Compressor does not Blown Fuse Replace fuse or reset circuit breaker. Check for correct fuses operate Broken or loose Replace or tighten the wires. Check for loose or broken wires at compressor, wires capacitor, or contactor. - Page 15 TROUBLESHOOTING (CONT.) Unit oversized Recalculate heating and or cooling loads. Unit short cycles Wiring and controls Loose connections in the wiring or a defective compressor contactor. Inadequate load side fluid volume. Fluid Volume Unit undersized Recalculate heating and or cooling loads. If excessive, possibly adding Insufficient insulation and shading will rectify the problem.
- Page 16 8733927110 (04/14) Catalog No: IM---GW---01 Copyright 2014 CAC/BDP Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Edition Date: 04/14 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Replaces: New...