Carrier GT-GS Indoor Split Series Installation, Operation & Maintenance Instructions Manual Download

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Split Products

GT-PX Split (50YDS) Series

GT-GS Indoor Split (50YCS) Series

GT-S Outdoor Split (38WQS) Series

Indoor and Outdoor Split

Geothermal Heat Pumps

Installation, Operation &

Maintenance Instructions

97B0048N01

Revision: 5 June, 2008

Table of Contents

Model Nomenclature

Safety 4
Storage 5
Pre-Installation 5
Equipment Selection

Air Coil Match-ups

6-7

Air Handler Selection

Installation 9
Water Connections

10-11

Ground Loop Applications

11-13

Open Loop - Ground Water Systems

14-15

Water Quality Standards

Refrigeration Installation

17-22

Lineset Information

Hot Water Generator

23-24

Electrical - Line Voltage

27-26

Electrical - Line Voltage

27-28

Electrical - HWG Wiring

Electrical - Low Voltage Wiring

30-32

Thermostat Wiring

CXM Controls

33-36

Unit Start-Up and Operating Conditions

37-38

Unit Start-Up Procedure

Unit Operating Conditions

40-42

Preventive Maintenance

Troubleshooting 44
CXM Process Flow Chart

Functional Troubleshooting Charts

46-47

Troubleshooting Form

Revision Log

Summary of Contents for GT-GS Indoor Split Series

Page 1: ...tions 10 11 Ground Loop Applications 11 13 Open Loop Ground Water Systems 14 15 Water Quality Standards 16 Refrigeration Installation 17 22 Lineset Information 17 Hot Water Generator 23 24 Electrical...

Page 2: ......

Page 3: ...1 Current Revision Standard Copper Cupro Nickel C N SS Standard 3 208 230 60 1 048 060 D COPPER WATER COIL W HOT WATER GENERATOR N CUPRO NICKEL WATER COIL P CUPRO NICKEL WATER COIL W HOT WATER GENERA...

Page 4: ...t and debris which may cause system damage WARNING WARNING WARNING CAUTION Safety Warnings cautions and notices appear throughout this manual Read these items carefully before attempting any installat...

Page 5: ...unit configurations are typically installed in a mechanical room The installation site chosen should include adequate service clearance around the unit Before unit start up read all manuals and become...

Page 6: ...rrier Geothermal split system heat pumps are rated in the ARI directory with a specific indoor coil match GT PX Split 50YDS models are rated with Carrier Bryant FV4 or FE4 series variable speed air ha...

Page 7: ...y requirements as listed above The air handler capacity must be at least at the minimum capacity shown in the table in order for the ARI rating condition to be valid See Figure 1 for an example select...

Page 8: ...propriate match Figure 1 Selecting Air Handler Equipment Selection Utilizing the Existing Air Handler or Coil R22 units only It is recommended that a new coil or air handler be installed with any geot...

Page 9: ...water electrical and line set connections Any access panel screws that would be difficult to remove after the unit is installed should be removed prior to setting the unit Refer to Figure 2 for an il...

Page 10: ...d Tighten Only Do Not Overtighten Figure 4 Water Connections Indoor Compressor Section Water Connections Residential Distributor Models Residential models utilize swivel piping fittings for water conn...

Page 11: ...oop earth coupled heat pump systems Instructions are provided to assist the contractor in installing trouble free ground loops These instructions are recommendations only State provincial and local co...

Page 12: ...id level drop is your only indication of air in the loop Antifreeze may be added before during or after the flushing procedure However depending upon which time is chosen antifreeze could be wasted wh...

Page 13: ...mage unit wiring by chewing on the insulation NOTICE Outdoor compressor section may not be tilted more than 5 degrees from level Damage to the compressor or stress on the loop piping could result if u...

Page 14: ...ogging should be referenced in Table 3 Expansion Tank and Pump Use a closed bladder type expansion tank to minimize mineral formation due to air exposure The expansion tank should be sized to provide...

Page 15: ...water regulating valves should never be used with Carrier Geothermal equipment CAUTION CAUTION Many units installed with a factory or field supplied manual or electric shut off valve DAMAGE WILL OCCU...

Page 16: ...Z JHZ JVTWVULU Z HYL 62 V TTVUPH PVU HZ O KYV_PKL JOSVYPKL UP YH L HUK Z SMH L JVTWV UKZ SS WWT 4H_PT T 4H_PT T SSV HISL H TH_PT T H LY LTWLYH YL OSVYPKL 3L LSZ 100 F 38 VWWLY WWT 59 NR WYV5PJRLS WWT...

Page 17: ...s kinked or distorted and it cannot be formed back into its original shape the damaged portion of the line should be replaced A restricted line set will effect the performance of the system A reversib...

Page 18: ...gized to avoid blowing hot air directly into the coil elevating refrigerant pressures during operation The heat pump will trip out on high pressure lockout without some method of disengaging the compr...

Page 19: ...on Compressor Section TXV IN toward Compressor Section TXV IN toward Compressor Section Figure 12a Typical Split Air Handler Installation Indoor Compressor Section Insulated Linesets Low Voltage Air p...

Page 20: ...Compressor Section Refrigeration Installation Insulated line set with UV Paint Power Disconnects PVC Condensate with vented trap Pad Low Voltage Wiring Return Plenum Compressor Section Air Handler TXV...

Page 21: ...Graph Charging The System There are two methods of charging a refrigerant system One method is the total charge method where the volume of the system is determined and the refrigerant is measured and...

Page 22: ...ading depending on the location of the measurement Therefore it is recommended that charging be monitored in the heating mode Charge should be evaluated by monitoring the subcooling in the heating mod...

Page 23: ...piping connections on a unit with built in pump This piping layout minimizes scaling potential Electric water heaters are recommended If a gas propane or oil water heater is used a second preheat tan...

Page 24: ...h point Cold Inlet Hot Outlet Coaxial Fitting Insulated water lines 5 8 OD 50 ft 15m maximum Water Heater Upper element to 120 130 F 49 54 C Lower element to 100 110 F 38 43 C Water Tank Refill Figure...

Page 25: ...ose to the water heater as possible Unbraze the hot gas u bend as shown in Figure 19 Take care to avoid overheating components Install the dual 1 2 lineset to the HWG Maximum length should be 30 feet...

Page 26: ...lumbing and electrical building codes take precedence over instructions contained herein The Manufacturer accepts no liability for equipment damaged and or personal injury arising from improper instal...

Page 27: ...ze based on 60 C copper conductor and Minimum Circuit Ampacity Rated Voltage of 208 230 60 1 Min Max Voltage of 197 254 HACR circuit breaker in USA only All fuses Class RK 5 Wire length based on one w...

Page 28: ...wires to the L side of the contactor as shown in Figures 21a through 21c Consult Tables 8a through 8c for correct fuse size 208 230 Volt Operation Verify transformer tap with air handler wiring diagra...

Page 29: ...This connection can also serve as a HWG disable when servicing the unit HWG Wiring Outdoor Compressor Section The HWG module should be wired to the outdoor section pump controls see Figure 20 A safety...

Page 30: ...n The CXM control allows the field selection of low water or water antifreeze solution temperature limit by clipping jumper JW3 which changes the sensing temperature associated with thermistor FP1 Not...

Page 31: ...will operate properly with the following notations 1 The valve will remain open during a unit lockout 2 The valve will draw approximately 25 35 VA through the Y signal of the thermostat Note This val...

Page 32: ...ump thermostat will work with these units provided it has the correct number of heating and cooling stages Y O G R C Y O G R C W1 W2 W E Typical Air Handler Typical T stat CXM Board Compressor Section...

Page 33: ...ation options DIP switches should only be changed when power is removed from the CXM control DIP switch 1 Unit Performance Sentinel Disable provides field selection to disable the UPS feature On Enabl...

Page 34: ...the initial 60 seconds of a compressor run cycle FP1 is set at the factory for one try Therefore the control will go into lockout mode once the FP1 fault has occurred FP1 lockout code 4 Air coil low t...

Page 35: ...2 heating 1 Stage 2 heating 3 Stage 2 heating 5 G Y1 Y2 W Stage 3 heating 1 Stage 3 heating 3 N A G W Emergency heat Emergency heat Emergency heat G Y or Y1 O Stage 1 cooling 2 Stage 1 cooling 4 Cool...

Page 36: ...an be used if anticipation current is less than that specified above Thermostat Signals Y and W have a 1 second recognition time when being activated or being removed O and G are direct pass through s...

Page 37: ...of operating limits is dependent primarily upon three factors 1 return air temperature 2 water temperature and 3 ambient temperature When any one of these factors is at minimum or maximum levels the...

Page 38: ...ance trip outs and high velocity water flow that could erode heat exchangers Unit air coil and filters Insure that filter is clean and accessible Clean air coil of all manufacturing oils Unit controls...

Page 39: ...h 12b f Check air temperature drop across the air coil when compressor is operating Air temperature drop should be between 15 F and 25 F 8 C and 14 C g Turn thermostat to OFF position A hissing noise...

Page 40: ...0 12 0 1 1 2 2 3 9 4 5 0 9 2 1 3 6 4 2 0 8 2 0 3 2 3 8 0 7 1 8 3 1 3 5 064 7 0 10 5 14 0 15 0 0 5 1 9 3 9 4 8 0 3 1 8 3 5 4 3 0 2 1 7 3 2 3 9 0 1 1 6 2 9 3 5 Model GPM Pressure Drop psi 30 F 50 F 70...

Page 41: ...267 287 270 290 5 10 5 10 5 10 2 5 2 5 2 5 8 1 10 1 5 9 7 9 3 7 5 7 17 23 18 24 19 25 50 1 5 2 25 3 131 141 130 140 130 140 222 242 208 228 194 214 13 18 13 18 14 19 10 15 9 14 9 14 21 9 23 9 16 1 18...

Page 42: ...192 407 427 411 431 415 435 8 14 8 14 8 14 13 18 13 18 14 19 18 2 20 2 13 9 15 9 9 6 11 6 42 50 43 51 44 52 110 1 5 2 25 3 138 148 137 147 136 146 505 525 483 503 459 479 6 11 6 11 6 11 10 15 9 14 8 1...

Page 43: ...even quicker than the water coil and may need more frequent inspections In areas with extremely hard water a HWG is not recommended Filters Filters must be clean to obtain maximum performance Filters...

Page 44: ...and can be verified using a voltmeter The fan signal is passed through the board to the external fan relay units with PSC motors only The alarm relay can either be 24VAC as shipped or dry contacts for...

Page 45: ...r further help Check Main power see power problems Check fault LED code on control board Yes No No No No No Yes No Yes See HP Fault See LP LOC Fault See FP1 Fault See FP2 Fault See Condensate Fault Se...

Page 46: ...in cooling Check fan motor operation and airflow restrictions Too high of external static Check static vs blower table X Air Temperature out of range Too much cold vent air Bring entering air temp wi...

Page 47: ...thermistor Check temp and impedance correlation per chart FP2 fault Code 5 X Reduced or no Air flow Check for dirty air filter and clean or replace Air Coil low temperature limit in cooling Check fan...

Page 48: ...SAT PSI SAT F F AIR COIL F F LIQUID LINE F HEATING EXPANSION VALVE COOLING EXPANSION VALVE AIR COIL F F LIQUID LINE F HEATING EXPANSION VALVE COOLING EXPANSION VALVE PSI SAT PSI SAT F F AIR HANDLER S...

Page 49: ...49 Residential Split 60Hz R22 R 410A Rev 5 June 2 0 0 8 Carrier Turn to the Experts...

Page 50: ...the Manufacturer s Customer Service Department at 1 405 745 6000 for specific information on the current design and specifications Statements and other information contained herein are not express wa...

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