INSTALLATION INSTRUCTIONS WATER SOURCE HEAT PUMPS MODELS: GSVS241-A, GSVS301A GSVS361-A, GSVS421-A Earth Loop Fluid Temperatures 25° - 110° Ground Water Temperatures 45° - 75° BARD MANUFACTURING COMPANY Bryan, Ohio 43506 Since 1914...Moving ahead, just as planned.
Contents Getting Other Informations and Publications .... 1 Open Loop (Well System Applications) Note .............................................................. 20 Water Connection ................................................. 20 General Information Well Pump Sizing ................................................. 20 Water Source Nomenclature .................................. 2 Start Up Prodecure for Open Loop System ......... 22 Heater Package Nomenclature ..............................
Getting Other Information and Publications These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.
WATER SOURCE PRODUCT LINE NOMENCLATURE GS V S 36 1 - A Electrical Characteristics A = 230/208-60-1 Modification Code Approximate Capacity Size On High Speed S = V = Single Capacity Compressor Vertical Ground Source Heat Pump TABLE 1 SPECIFICATIONS MODEL GSVS241-A GSVS301-A GSVS361-A GSVS421-A 230/208-1 230/208-1 230/208-1 230/208-1 Operating Voltage Range 253-197 253-197 253-197 253-197 Minimum Circuit Ampacity 13.0 16.0 20.0 24.0 #14 #14 #12 #10 20 25 30 35 8.2 / 9.
TABLE 2 INDOOR PLOWER PERFORMANCE (CFM) Model GSVS241-A GSVS301-A GSVS361-A GSVS421-A .00 800 1000 1200 1250 .10 800 1000 1200 1250 .20 800 1000 1200 1250 .30 800 1000 1200 1250 .40 800 1000 1200 1250 .50 800 1000 1200 1250 .
Manual 2100-317 Page 4 FIGURE 1 – UNIT DIMENSIONS Supply Width Depth Height Units A B C ALL 27" 26" 48" Duct D Return Flange Width Height E F G 13 7/8" 13 7/8" 22 1/2" 22 1/4" H I J 6" 4 1/4" 1 1/2" MIS-1238
HEATER PACKAGE NOMENCLATURE EH 3 GSV A - A 14 C C = Circuit Breaker Nominal KW A = 240/208-1-60 Modification Code GSV = Ground Source Vertical 3 = 3 Ton Electric Heater TABLE 4 ELECTRICAL SPECIFICATIONS OPTIONAL FIELD-INSTALLED HEATER PACKAGES Heater Heater Amps, KW and Heater Package Package Capacity @ 240 Volts Model No.
APPLICATION AND LOCATION GENERAL Units are shipped completely assembled and internally wired, requiring only duct connections, thermostat wiring, 230/208 volt AC power wiring, and water piping. The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. Any heat pump is more critical of proper refrigerant charge and an adequate duct system than a cooling only air conditioning unit.
FIGURE 2 FIELD-CONVERSION TO LEFT HAND RETURN REMOVE SINGLE AND DOUBLE DOORS Q REMOVE 4 SCREWS SECURING COVER R REMOVE 2 SCREWS HOLDING CONTROL BOX TO CORNER PANEL S PASS CONTROL PANEL THROUGH COMPRESSOR SECTION T RE-SECURE CONTROL PANEL ON OPPOSITIE SIDE IN SAME MANNER AS ORIGINALLY ATTACHED REPOSTIION DOORS SO DOUBLE DOORS ARE ON CONTROL PANEL SIDE, AND SINGLE DOOR ON OPPOSITE SIDE TOP VIEW MIS-1209 Manual 2100-317 Page 7
FILTER This unit must not be operated without a filter. It comes equipped with a disposable filter which should be checked often and replaced if dirty. Insufficient air flow due to undersized duct systems or dirty filters can result in nuisance tripping of the high or low pressure control. Refer to Table 2 for correct air flow and static pressure requirements. (See Figure 3.) CONDENSATE DRAIN Determine where the drain line will run.
WIRING INSTRUCTIONS GENERAL All wiring must be installed in accordance with the National Electrical Code and local codes. In Canada, all wiring must be installed in accordance with the Canadian Electrical Code and in accordance with the regulations of the authorities having jurisdiction. Power supply voltage must conform to the voltage shown on the unit serial plate. A wiring diagram of the unit is attached to the inside of the electrical cover.
THERMOSTAT INDICATOR LAMPS BLOWER CONTROL SETUP STANDARD INDICATOR LAMPS The lamp marked “EM” or “EMER.” comes on and stays on whenever the system switch is placed in the emergency heat position. The lamp marked “CHECK” or “MALF.” will flash if the high pressure switch opens and locks out compressor operation. The “CHECK” or “MALF.” lamp will come on and stay on if the low pressure switch closes and locks out compressor operation.
FIGURE 5 MIS-1211 Manual 2100-317 Page 11
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CLOSED LOOP (Earth Coupled Ground Loop Applications) NOTE: Most household water systems have more than enough water pressure either from the well pump of the municipal water system to overcome the pressure of head loss in 1/2 inch or 3/4 inch household plumbing.
START UP PROCEDURE FOR CLOSED LOOP SYSTEM sufficient capacity. If the module selection is correct, there is probably trapped air or a restriction in the piping circuit. 1. Be sure main power to the unit is OFF at disconnect. 8. Start the unit in cooling mode. By moving the thermostat switch to cool, fan should be set for AUTO. 2. Set thermostat system switch to OFF, fan switch to AUTO. 3. Move main power disconnect to ON.
FIGURE 8 PERFORMANCE MODEL GPM-1 LOOP PUMP MODULE 35 30 Head (Feet) 25 20 15 10 5 0 0 5 10 15 20 25 30 35 Flow (GPM) FIGURE 9 PERFORMANCE MODEL GPM-2 LOOP PUMP MODULE 70 60 Head (Feet) 50 40 30 20 10 0 0 5 10 15 20 25 30 35 Flow (GPM) Manual 2100-317 Page 19
OPEN LOOP (Well System Applications) NOTE: Unit shipped from factory with 27 PSIG low pressure switch wired into control circuit for open loop applications. WATER CONNECTIONS It is very important that an adequate supply of clean, noncorrosive water at the proper pressure be provided before the installation is made. Insufficient water, in the heating mode for example, will cause the low pressure switch to trip, shutting down the heat pump.
FIGURE 10 WATER CONNECTION COMPONENTS 10 11 5 8 MIS-1221 9 6 7 12 Manual 2100-317 Page 21
SYSTEM START UP PROCEDURE FOR OPEN LOOP APPLICATIONS 1. Be sure main power to the unit is OFF at disconnect. 2. Set thermostat system switch to OFF, fan switch to AUTO. 3. Move main power disconnect to ON. Except as required for safety while servicing – DO NOT OPEN THE UNIT DISCONNECT SWITCH. 4. Check system air low for obstructions. A. Move thermostat fan switch to ON. Blower runs. B. Be sure all registers and grilles are open. C. Move thermostat fan switch to AUTO. Blower should stop. 5.
4. Scale Formation. Of all the water problems, the formation of scale by ground water is by far the most common. Usually this scale is due to the formation of calcium carbonate by magnesium carbonate or calcium sulfate may also be present. Carbon dioxide gas (CO2), the carbonate of calcium and magnesium carbonate, is very soluble in water. It will remain dissolved in the water until some outside factor upsets the balance. This outside influence may be a large change in water temperature or pressure.
D. Size the pump to provide necessary GPM for the ground water heat pump. A 12 GPM or greater water flow rate is required on all modes when used on this type system. E. A pressure tank should be installed in dwelling to be heated adjacent to the ground water heat pump. A pressure switch should be installed at the tank for pump control. K. Locate the discharge high enough above high water level so the water will not back up and freeze inside the drain pipe. L.
SEQUENCE OF OPERATION COOLING When thermostat system switch is placed in COOL it completes a circuit from “R” to “O”, energizing the reversing valve solenoid. On a call for cooling, the cooling bulb completes a circuit from “R” to “Y”, energizing the compressor contactor starting the compressor. The “R” to “G” circuit for blower operation is automatically completed on any call for cooling operation, or can be energized by manual fan switch on subbase for constant air circulation.
FIGURE 13 COMPRESSOR DESUPER HEAT COIL HIGH PRESSURE SWITCH DISCHARGE SERVICE PORT LOW PRESSURE SWITCHES REVERSING VALVE WATER COIL EXPANSION VALVE LOW VOLTAGE IN SUCTION SERVICE PORT MIS-1224 HIGH VOLTAGE IN FIGURE 14 CONTROL PANEL LOW VOLTAGE TERMINAL STRIP BLINKER BLOWER BOARD LOW PRESSURE LOCKOUT RELAY EMERGENCY HEAT RELAY TRANSFORMER GROUND TERMINAL Manual 2100-317 Page 26 COMPRESSOR CAPACITOR COMPRESSOR CONTACTOR HIGH PRESSURE LOCKOUT RELAY
FIGURE 15 Manual 2100-317 Page 27
FIGURE 16 PRESSURE TABLES Fluid Temperature Entering Water Coil Degree F COOLING Model GSVS241-A GSVS301-A GSVS361-A GSVS421-A Return Air Pressure Temperature 45 55 60 65 70 75 80 85 77 78 79 80 81 82 151 163 175 186 198 210 90 95 100 105 110 75 deg. DB 62 deg. WB Low Side High Side 74 75 76 116 128 140 80 deg. DB 67 deg. WB Low Side High Side 79 119 85 deg. DB 72 deg. WB Low Side High Side 85 86 87 124 136 148 75 deg. DB 62 deg.
QUICK REFERANCE TROUBLESHOOTING CHART FOR WATER TO AIR HEAT PUMP Compressor Will Not Run No Power at Contactor Compressor Will Not Run Power at Contactor Compressor "Hums" But Will Not Start Heating or Cooling Cycles Compressor Cycles on Overload Ë Ë Å Å Å Å Å Å Å Å Å Å Ë Å Å Å Å Å Å Å Å Å Ë Å Å Å Å Ë Ë Ë Å Å Ë Ë Å Ë Auxillary Heat Upstream of Coil Undersized or Restricted Ductwork Air Filters Dirty Air Volume Low Motor Winding Defective Fins Dirty or Plugged Plugged or Restricted Met
SERVICE SERVICE HINTS 1. Caution homeowner to maintain clean air filters at tall times. Also, not to needlessly close off supply and return air registers. This reduces air flow through the system, which shortens equipment service life as well as increasing operating costs. 2. Check all power fuses or circuit breakers to be sure that they are the correct rating.
TROUBLESHOOTING ECM BLOWER MOTORS CAUTION Disconnect power from unit before removing or replacing connectors, or servicing motor. Wait at least 5 minutes after disconnection power before opening motor. SYM PTOM Motor rocks slightly w hen starting.
SYM PTOM Motor starts but runs erratically CAUSE / PROCEDURE ! Varies up and down or intermittent ! Check line voltage for variation or "sag" ! Check low voltage connections (G, Y, W, R, C) at motor; unseated pins in motor harness connectors ! Check "Bk" for erratic CFM command (in variable speed applications ! Check out system controls - thermostat? ! Perform Moisture Check ! "Hunts" or puffs" at high CRM (speed) ! Does removing panel or filter reduce "puffing"? – Reduce restriction – Reduce maximum a
ACCESSORIES ADD-ON DPM26A PUMP MODULE KIT INSTALLATION NOTE: This section applies only if a DPM26A Pump Module is added. Refer to DPM26A instructions for complete installation details. 1. Follow all local, state, and national codes applicable to the installation of the pump module kit.
GROUND SOURCE HEAT PUMP PERFORMANCE REPORT This performance check report should be filled out by installer and retained with unit. DATE 1. TAKEN BY: UNIT: Mfgr Model No. S/N THERMOSTAT: Mfgr Model No. P/N 2. Person Reporting 3. Company Reporting 4. 5. Installed By User’s (Owner’s) Name Address 6. Unit Location Date Installed WATER SYSTEM INFORMATION 7. Open Loop System (Water Well) A. 8.
THE FOLLOWING INFORMATION IS NEEDED TO CHECK PERFORMANCE OF UNIT. Cooling 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23.
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