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INSTALLATION
INSTRUCTIONS
Earth Loop Fluid
Temperatures 25 – 110
Ground Water Temperature 45 – 75
© Copyright 2003
QW SERIES
WATER SOURCE
PACKAGED HEAT PUMP
QW242D
QW361D
QW481D
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead, just as planned.
Models:
QW302D
QW421D
QW601D
Manual No.:
Supersedes:
File:
Date:
Manual 2100-418F
Page
2100-418F
2100-418E
Vol II Tab 14
06-28-07
1 of 49
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Table of Contents
Troubleshooting
Related Manuals for Bard QW242D
Summary of Contents for Bard QW242D
- Page 1 QW302D QW361D QW421D QW481D QW601D Earth Loop Fluid Temperatures 25 – 110 Ground Water Temperature 45 – 75 Bard Manufacturing Company, Inc. Manual No.: 2100-418F Supersedes: 2100-418E Bryan, Ohio 43506 File: Vol II Tab 14 Since 1914...Moving ahead, just as planned.
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Page 2: Table Of Contents
CONTENTS Getting Other Information and Publications Closed Loop (Earth Coupled Ground Loop Applications) For more information, contact these publishers: ..4 Circulation System Design ........35 Copper Water Coil Application ....... 35 QW General Information Start Up Procedure for Closed Loop System ..36 QW Model Nomenclature ........ - Page 3 CONTENTS Tables Figures Table 1 Electrical Specifications ......5 Figure 1 Unit Dimensions ........6 Table 2 Operating Voltage Range ....... 19 Figure 2 Removal of Unit From Skid ....7 Table 3 Wall Thermostats ........19 Figure 3 Proper Handling of Unit After Removal Table 4 Indoor Blower Performance ....
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Page 4: Getting Other Information And Publications For More Information, Contact These Publishers
GETTING OTHER INFORMATION AND PUBLICATIONS These publications can help you install the air FOR MORE INFORMATION, CONTACT conditioner or heat pump. You can usually find these at THESE PUBLISHERS: your local library or purchase them directly from the publisher. Be sure to consult current edition of each ACCA Air Conditioning Contractors of America standard. -
Page 5: Qw Model Nomenclature
QW SERIES WATER SOURCE GENERAL INFORMATION QW MODEL NOMENCLATURE INTERNAL CONTROLS MODEL NUMBER REVISION X - Standard 0Z - None Model Water • High Pressure Switch Source Heat Pump • Low Pressure Switch VOLTS & PHASE • Compressor Time Delay CAPACITY COLOR OPTIONS A - 230/208-60-1... -
Page 6: Figure 1 Unit Dimensions
Manual 2100-418F Page 6 of 49... -
Page 7: Shipping Damage
SHIPPING DAMAGE HANDLING UNIT AFTER REMOVAL FROM SKID Upon receipt of equipment, the carton should be checked for external signs of shipping damage. The WARNING skid must remain attached to the unit until the unit is ready for installation. If damage is found, the receiving party must contact the last carrier immediately, Exercise extreme caution when pushing the preferably in writing, requesting inspection by the... -
Page 8: Removal Of Wall Bracket From Shipping Location
FIGURE 3 PROPER HANDLING OF UNIT AFTER REMOVAL FROM SKID UNIT (RIGHT SIDE) STRAP APPLIANCE CART COMPRESSOR REMOVAL OF WALL BRACKET FROM While these instructions are intended as a general recommended guide, they do not supersede any national SHIPPING LOCATION (UNITS WITH and/or local codes in any way. -
Page 9: Figure 4 Installation Of Unit W/Wall Sleeve
FIGURE 4 INSTALLATION OF UNIT THROUGH WALL WITH WALL SLEEVE Manual 2100-418F Page 9 of 49... -
Page 10: Figure 5 Installation With Free Blow Plenum
FIGURE 5 INSTALLATION WITH FREE BLOW PLENUM CEILING FLOOR FIGURE 6 DUCTED APPLICATION FLOOR Manual 2100-418F Page 10 of 49... -
Page 11: Duct Work
The QT series heat pumps are designed for use with DUCT WORK free return (non-ducted) and either free blow with the Any heat pump is more critical of proper operating use of QPB Plenum Box or a duct supply air system. charge and an adequate duct system than a straight air The QPB Plenum Box mounts on top of the unit and has conditioning unit. -
Page 12: Figure 8 Condensate Drain
FIGURE 8 CONDENSATE DRAIN The side drain requires a water trap for proper drainage. See Figure 8A. The drain can be routed through the floor or through the wall. If the drain is to be routed through an unconditioned space, it must be protected from freezing . The drain line must be able to be removed from the unit if it is necessary to remove the unit from the wall. -
Page 13: Mist Eliminator Service
The rear drain can be used with wall thickness of up to MIST ELIMINATOR SERVICE (Optional – 10 inches where a water trap can be installed between only used with one of the vent options) the unit and the interior wall. See Figure 8B. The trap A mist eliminator is supplied with the wall sleeve. -
Page 14: Figure 9 Fresh Air Damper Removal
COMMERCIAL ROOM VENTILATOR OPTION 2. The power connectors for the CRV (located on the right side of the unit) must be disconnected. Before starting the removal make sure the power has Squeeze the tabs on the sides of the connector and been turned off. - Page 15 QTEC ENERGY RECOVERY VENTILATOR 3. Underneath the heat recovery cassette there is a OPTION power connector for the lower blower assembly. To disconnect this plug, the tabs on both sides of the Before starting the removal make sure that the power plug must be squeezed to release the plug.
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Page 16: Installation Instructions
INSTALLATION INSTRUCTIONS MOUNTING THE UNIT 7. Position side trim pieces to the wall and attach with field supplied screws. There are two long and two When installing a QW unit near an interior wall on the short pieces supplied. The long pieces are to enclose left side, a minimum of 8 inches is required;... -
Page 17: Figure 11 Remove Locking Screws From Wheels 16 Figure 12 Unit Mounting Without Wall Sleeve
FIGURE 12 UNIT MOUNTING WITHOUT VENTILATION WALL SLEEVE (REFER TO MOUNTING INSTRUCTIONS ON PAGE 16) SIDE TRIM (2 PIECES) SIDE TRIM (2 PIECES) WALL MOUNTING BRACKET BOTTOM TRIM BOTTOM TRIM PIECE EXTENSION Manual 2100-418F Page 17 of 49... -
Page 18: Figure 13 Component Location
FIGURE 13 COMPONENT LOCATION SIDE FIELD WIRE ENTRANCE REMOTE THERMOSTAT TERMINAL BLOCK INDOOR BLOWER CONTROL BOX/ CIRCUIT BREAKER PANEL ELECTRICAL CONNECTION PANEL Manual 2100-418F Page 18 of 49... -
Page 19: Wiring - Main Power
WIRING – MAIN POWER TABLE 2 OPERATING VOLTAGE RANGE Refer to the unit rating plate and/or Table 1 for wire sizing information and maximum fuse or “HACR Type” circuit breaker size. Each unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current. -
Page 20: Low Voltage Connections
The climate Control Option G is an electronic non- “W2” terminal or pin 0 of P4 is second stage heat (if programmable thermostat and humidistat. The subbase equipped). If the unit is equipped with an optional hot of the thermostat is factory wired to the front panel of water coil plenum box the water valve will be the unit. -
Page 21: Figure 15 Remote Thermostat Wiring "X" Option
FIGURE 15 REMOTE THERMOSTAT WIRING DIAGRAM “X” OPTION H200 HUMIDISTAT W1/E D/YO 8403-060 LVTB 8403-058 TH5220D1151 FACTORY INSTALLED JUMPER 4102-034 C Manual 2100-418F Page 21 of 49... -
Page 22: Figure 16 Remote Thermostat Wiring "E" Option
FIGURE 16 REMOTE THERMOSTAT WIRING DIAGRAM “E” THERMOSTAT OPTION 8403-060 W1/E D/YO 4102-050 Manual 2100-418F Page 22 of 49... - Page 23 FIGURE 17 REMOTE THERMOSTAT WIRING DIAGRAM “G” THERMOSTAT OPTION 01 Y Y1 TO TB2 8403-060 TERM. "C" W1/E D/YO 4102-054 Manual 2100-418F Page 23 of 49...
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Page 24: Start Up
START UP DESCRIPTION OF STANDARD HIGH PRESSURE SWITCH AND LOCKOUT SEQUENCE EQUIPMENT If the high pressure switch opens, the compressor LOW PRESSURE SWITCH contactor will de-energize immediately. The lockout timer will go into a soft lockout and stay in soft lockout NOTE: This unit is supplied with two low pressure until the high pressure switch closes and the delay on switches installed, a 15 PSIG and a 27 PSIG. -
Page 25: Optional Cfm
DELAY ON MAKE TIMING OPTIONAL CFM SERVICE HINTS This option is not available for QW242 or QW302. 1. Caution user to maintain clean air filters at all times. Also, not to needlessly close off supply air registers. These units are shipped from the factory set to operate at This may reduce airflow through the system, which the optional CFM level shown in Table 4. -
Page 26: Optional Climate Controls Sequence Of Operation
Reheat Circuit – There is a small orifice inserted If the unit is running in heat pump mode and the between the reheat coil return line and suction line that humidistat calls for dehumidification, the will prevent liquid from accumulating in the reheat coil dehumidification mode takes precedence over the heat when it is inactive. -
Page 27: Refrigerant Tube Schematic For Reheat Coil
NOTE: The CS2000A1 (or other means for ventilation If the unit is running in heat pump mode and the control) must be used if any mechanical humidistat calls for dehumidification, the (motorized) ventilation options are installed. dehumidification mode takes precedence over the heat pump heating mode. -
Page 28: Figure 17 Remote Thermostat Wiring "G" Option 23 Figure 18 Heat Pump Dehumidification Mode Circuit Diagram
FIGURE 18 HEAT PUMP DEHUMIDIFICATION MODE CIRCUIT DIAGRAM INDOOR COIL DISTRIBUTOR FILTER/ DRIER REHEAT COIL EXPANSION VALVE 4 WAY VALVE ORIFICE DRAIN ASS'Y CHECK VALVE OPEN WATER CIRCUIT WATER 3 WAY COIL BULB VALVE COMPRESSOR WATER MIS-1788 A FIGURE 19 HEAT PUMP COOLING MODE CIRCUIT DIAGRAM INDOOR COIL... - Page 29 Manual 2100-418F Page 29 of 49...
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Page 30: Figure 20 Fluid Connections W/Ventilation Wall Sleeve
FIGURE 20 FLUID CONNECTIONS ON UNIT WITH VENTILATION WALL SLEEVE SIDE TRIM PIECES (SHIPPED WITH UNIT) IF THE WALL THICKNESS IS LESS THAN 14" BUT GREATER THAN 8", SIDE TRIM PEICES A SIDE TRIM EXTENSION KIT (SHIPPED WITH UNIT) QSTX42 IS REQUIRED. REFER TO UNIT SPEC. -
Page 31: Figure 21 Fluid Connections W/O Ventilation Wall Sleeve
FIGURE 21 FLUID CONNECTIONS ON UNIT WITHOUT VENTILATION WALL SLEEVE TOP VIEW WALL BRACKET WALL BRACKET 4" WATER LINES WALL LOCATION BACK OF UNIT FLUID ACCESS FROM TOP 63 1/2" OPENING IN WALL BRACKET REAR OF UNIT (LEFT BRACKET 3" x 8" REMOVED FOR CLARITY) 8 1/2"... -
Page 32: Pressure Tables
TABLE 6 PRESSURE TABLE Fluid Temperature Entering Water Coil Degree F COOLING The data in the above pressure chart is based on the following flow rates: FLOW RATE FOR VARIOUS FLUIDS Manual 2100-418F Page 32 of 49... - Page 33 TABLE 7 PRESSURE TABLE HEATING Fluid Temperature Entering Water Coil Degree F The data in the above pressure chart is based on the following flow rates: FLOW RATE FOR VARIOUS FLUIDS Manual 2100-418F Page 33 of 49...
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Page 34: Optional Accessories
Manual 2100-418F Page 34 of 49... -
Page 35: Closed Loop (Earth Coupled Ground Loop Applications)
Surprisingly, the heat pump itself is rarely the cause. Most problems occur because designers and installers Bard supplies a work sheet to simplify head loss forget that a closed loop earth coupled heat pump calculations and circulator selection. Refer to system is not like a household plumbing system. -
Page 36: Start Up Procedure For Closed Loop System
selection is correct, there is probably trapped air or a START UP PROCEDURE FOR CLOSED restriction in the piping circuit. LOOP SYSTEM 8. Start the unit in cooling mode. By moving the 1. Be sure main power to the unit is OFF at disconnect. thermostat switch to cool, fan should be set for 2. -
Page 37: Figure 24 Performance Model Wgpm-1C
FIGURE 24 PERFORMANCE MODEL WGPM-1C LOOP PUMP MODULE Flow (GPM) FIGURE 25 PERFORMANCE MODEL WGPM-2C LOOP PUMP MODULE Flow (GPM) Manual 2100-418F Page 37 of 49... -
Page 38: Open Loop (Well System Applications)
OPEN LOOP (Well System Applications) WATER CONNECTIONS TABLE 9 CONSTANT FLOW VALVES 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. -
Page 39: Well Pump Sizing
Strainer (5) installed upstream of constant flow valve well pump has enough capacity. It should also insure (7) to collect foreign material, which would clog the that the piping is not undersized, which would create too flow valve orifice. much pressure due to friction loss. High pressure losses due to undersized pipe will reduce efficiency and Figure 26 on preceding page shows the use of shutoff... -
Page 40: Water Corrosion
10. Check the refrigerant system pressures against the 2. Suspended Particles in the Water. Filtering heating refrigerant pressure table in installation will usually remove most suspended particles (fine manual. Once again, if they do not match, check for sand, small gravel) from the water. The problem airflow problems and then refrigeration system with suspended particles in the water is that it will erode metal parts, pumps, heat transfer coils, etc. -
Page 41: Lake And Pond Installations
FIGURE 27 CLEANING WATER COIL HOSE BIB (A) ISOLATION VALVE HOSE BIB (B) ISOLATION VALVE PUMP LAKE AND POND INSTALLATIONS D. Size the pump to provide necessary GPM for the ground water heat pump. A 12 GPM or greater Lakes and ponds can provide a low cost source of water water flow rate is required on all modes when used for heating and cooling with a ground water heat pump. -
Page 42: Figure 28 Water Well System
Manual 2100-418F Page 42 of 49... -
Page 43: Cooling Tower / Boiler Application
In the heating mode, heat is absorbed from the source WARNING water loop. A boiler can be utilized to maintain the loop at the desired temperature. In milder climates a “flooded tower” concept is often used. This concept Thin ice may result in the vicinity of the involves adding makeup water to the cooling tower discharge line. -
Page 44: Service
SERVICE SERVICE HINTS WARNING 1. Maintain clean air filters at all times. Also, do not needlessly close off supply and return air registers. This reduces airflow through the system, which Both the high and low side of the scroll shortens equipment service life as well as increasing compressor must be checked with manifold operating costs. -
Page 45: Troubleshooting Ge Ecm™ Blower Motors
TROUBLESHOOTING GE ECM MOTORS ™ CAUTION: Symptom Cause/Procedure • Noisy blower or cabinet • Check for loose blower housing, panels, etc. Disconnect power from unit before removing or replacing • High static creating high blower speed? connectors, or servicing motor. To avoid electric shock from - Check for air whistling through seams in the motor’s capacitors, disconnect power and wait at least 5 ducts, cabinets or panels... -
Page 46: Figure 29 Control Disassembly
TROUBLESHOOTING GE ECM MOTORS CONT’D. ™ 8b. IF REPLACING AN ECM 2.3 CONTROL WITH AN ECM Replacing ECM Control Module 2.3 CONTROL, the plastic tab and shorter through-bolts are not To replace the control module for the GE variable-speed indoor blower needed. -
Page 47: Quick Reference Troubleshooting Chart For Water To Air Heat Pump
Manual 2100-418F Page 47 of 49... -
Page 48: Ground Source Heat Pump Performance Report
GROUND SOURCE HEAT PUMP PERFORMANCE REPORT This performance check report should be filled out by installer and retained with unit. DATE: TAKEN BY: 1. UNIT: Mfgr Model # THERMOSTAT: Mfgr Model # 2. Person Reporting 3. Company Reporting 4. Installed By Date Installed 5. - Page 49 THE FOLLOWING INFORMATION IS NEEDED TO CHECK PERFORMANCE OF UNIT FLUID SIDE DATA Cooling ** Heating 9. Entering fluid temperature 10. Leaving fluid temperature 11. Entering fluid pressure PSIG 12. Leaving fluid pressure PSIG 13. Pressure drop through coil PSIG 14.