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INSTALLATION
INSTRUCTIONS
Earth Loop Fluid
Temperatures 25 – 110
Ground Water Temperature 45 – 75
QW SERIES
GEOTHERMAL R-410A
STAGED CAPACITY
PACKAGED HEAT PUMP
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead, just as planned.
Models:
QW2S1
QW3S1
QW4S1
QW5S1
MIS-2736
Manual No.:
Supersedes:
File:
Date:
2100-532B
2100-532A
Vol II Tab 14
07-19-10
Manual
2100-532B
Page
1 of 46
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Troubleshooting
Related Manuals for Bard QW2S1
Summary of Contents for Bard QW2S1
- Page 1 QW2S1 QW3S1 QW4S1 QW5S1 Earth Loop Fluid MIS-2736 Temperatures 25 – 110 Ground Water Temperature 45 – 75 Bard Manufacturing Company, Inc. Manual No.: 2100-532B Supersedes: 2100-532A 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 ........30 Copper Water Coil Application ....... 30 QW General Information Start Up Procedure for Closed Loop System ..31 QW Model Nomenclature ........ - Page 3 CONTENTS Tables Figures Table 1 Electrical Specifications ......5 Figure 1 Unit Dimensions ........6 Table 2 Operating Voltage Range ....... 18 Figure 2 Removal of Unit From Skid ....7 Table 3 Wall Thermostats ........18 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 GEOTHERMAL R-410A STAGED CAPACITY GENERAL INFORMATION QW MODEL NOMENCLATURE MODEL NUMBER | COIL OPTIONS FILTER OPTIONS Q-Tec™ Model C - Copper (water) SPECIALTY 0Z - OKW X - 2-Inch Pleated N - Cupronickel PRODUCTS (MERV6) CAPACITY | 2 - 2 Ton VOLTS &... -
Page 6: Figure 1 Unit Dimensions
Manual 2100-532B Page 6 of 46... -
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 Q-Tec 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 14" to 5" WALL SLEEVE VENTILATION AIR DIVIDER QW2S, QW3S - 42.000" QW4S, QW5S - 48.000" 33 7/8" SUPPLY AIR 28 7/8" 18 9/16" OPTIONAL FREE BLOW PLENUM BOX HIGH VOLTAGE ELECTRICAL ENTRANCE (TOP-REAR-SIDE) 17 9/16"... -
Page 10: Figure 5 Installation With Free Blow Plenum
FIGURE 5 INSTALLATION WITH FREE BLOW PLENUM 8 FT. - 9 IN. 8 FT. - 8 IN. MINIMUM REQUIRED INSTALLATION HEIGHT FLOOR MIS-2740 FIGURE 6 DUCTED APPLICATION SUSPENDED CEILING DUCT FIXED CEILING 25 IN. DUCT FLANGE MINIMUM 12 IN. MINIMUM 2 IN. -
Page 11: Duct Work
When used with a ducted supply, a QCX Cabinet DUCT WORK Extension can be used to conceal the duct work above Any heat pump is more critical of proper operating the unit to the ceiling. This extends 20" above the unit charge and an adequate duct system than a straight air for a total height above the floor of 10'-7/8". -
Page 12: Figure 8A Condensate Drain
FIGURE 8A CONDENSATE DRAIN LOOP TO FORM A "P" TRAP DRAIN HOSE EXTERNAL DRAIN TUBE ALTERNATE DRAINING FLOOR OPTION FRONT VIEW WITH CONDENSER DOOR REMOVED MIS-2743 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. -
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 Q-TEC 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 15: 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 16: Figure 10 Remove Locking Screws From Wheels 15 Figure 11 Unit Mounting Without Wall Sleeve
FIGURE 11 UNIT MOUNTING WITHOUT VENTILATION WALL SLEEVE SIDE TRIM CUT TO LENGTH WALL MOUNTING BRACKET 41" ADJUSTABLE SIDE TRIM EXTENSION KIT -ORDERED SEPARATELY BASE TRIM SIDE TRIM EXTENSION BASE TRIM EXTENSION MIS-2744 A Manual 2100-532B Page 16 of 46... -
Page 17: Figure 12 Component Location
FIGURE 12 COMPONENT LOCATION SIDE FIELD WIRE ENTRANCE REMOTE THERMOSTAT TERMINAL BLOCK INDOOR DUAL BLOWERS CONTROL BOX/ CIRCUIT BREAKER PANEL MIS-2745 Manual 2100-532B Page 17 of 46... -
Page 18: Wiring - Main Power
WIRING – MAIN POWER TABLE 2 OPERATING VOLTAGE RANGE Refer to the unit rating plate and/or Table 2 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 19: Low Voltage Connections
LOW VOLTAGE CONNECTIONS The “W2” terminal is the electric heat signal and feeds through Pin #9 of Plug P2. The “R” terminal is the 24 VAC hot terminal and is supplied through Pin #10 of Plug P2. The “W1/E” terminal is the emergency heat signal and feeds through Pin #3 of Plug P2. -
Page 20: Figure 14 Remote Thermostat Wiring "X" Option
FIGURE 14 REMOTE THERMOSTAT WIRING DIAGRAM “X” OPTION Temp. and Humidity Controller Low Voltage Part #8403-060 Terminal Strip Red/Yellow W1/E Purple Brown/White PLUG #2 Orange Yellow Blue Brown Red/White Black/White Pink D/YO Terminal CO2 Controller PLUG #1 Strip Part #8403-056 24VAC Black Black... -
Page 21: Figure 15 Remote Thermostat Wiring "D" Option
FIGURE 15 REMOTE THERMOSTAT WIRING DIAGRAM “D” THERMOSTAT OPTION Purple/White D/YO Red/Yellow W1/E Purple Brown/White PLUG #2 Orange Temp. and Humidity Controller Yellow Part #8403-060 Blue Brown Red/White Black/White Pink 4115-100 A Manual 2100-532B Page 21 of 46... - Page 22 FIGURE 16 REMOTE THERMOSTAT PLUG CO VENT CONTROL WIRING DIAGRAM “H” THERMOSTAT OPTION Purple/White D/YO Red/Yellow W1/E Purple Brown/White PLUG #2 Orange Temp. and Humidity Controller Yellow Part #8403-060 Blue Brown Red/White Black/White Pink PLUG #1 CO2 Controller Part #8403-056 24VAC Black Black...
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Page 23: 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 45 PSIG and a 60 PSIG. -
Page 24: Optional Cfm
DELAY ON MAKE TIMING SERVICE HINTS OPTIONAL CFM 1. Caution user to maintain clean air filters at all times. All models covered by this Manual are factory set to operate at rated CFM levels as shown in Table 4. Rated Also, not to needlessly close off supply air registers. -
Page 25: Pressure Service Ports
PRESSURE SERVICE PORTS PIPING ACCESS TO UNIT High and low pressure service ports are installed on all Water piping to and from the coaxial water coil is intended to enter/exit the unit through the rectangular units so that the system operating pressures can be observed. -
Page 26: Figure 16 Remote Thermostat Wiring "H" Option 22 Figure 17 Fluid Connections W/Ventilation Wall Sleeve
FIGURE 17 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 27: Figure 18 Fluid Connections W/O Ventilation Wall Sleeve
FIGURE 18 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 66 1/2" OPENING IN WALL BRACKET REAR OF UNIT (LEFT BRACKET 3" x 8" REMOVED FOR CLARITY) 8 1/2"... -
Page 28: Pressure Tables
TABLE 5 PRESSURE TABLE — F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° °... -
Page 29: Optional Accessories
Manual 2100-532B Page 29 of 46... -
Page 30: Closed Loop (Earth Coupled Ground Loop Applications)
Surprisingly, the heat pump itself is rarely the cause. Bard supplies a work sheet to simplify head loss Most problems occur because designers and installers calculations and circulator selection. Refer to forget that a closed loop earth coupled heat pump “Circulating Pump Work sheet”... -
Page 31: Start Up Procedure For Closed Loop System
model for sufficient capacity. If the module START UP PROCEDURE FOR CLOSED selection is correct, there is probably trapped air or a LOOP SYSTEM restriction in the piping circuit. 1. Be sure main power to the unit is OFF at disconnect. 8. -
Page 32: Figure 21 Performance Model Wgpm-1C
FIGURE 21 PERFORMANCE MODEL DORFC-1 LOOP PUMP MODULE Flow (GPM) FIGURE 22 PERFORMANCE MODEL DORFC-2 LOOP PUMP MODULE Flow (GPM) Manual 2100-532B Page 32 of 46... -
Page 33: Water Connections
OPEN LOOP (Well System Applications) TABLE 7 WATER CONNECTIONS 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 34: Well Pump Sizing
WELL PUMP SIZING A. Connect a water flow meter to the drain cock between the constant flow valve and the Strictly speaking, sizing the well pump is the solenoid valve. Run a hose from the flow meter responsibility of the well drilling contractor. It is to a drain or sink. -
Page 35: Water Corrosion
WATER CORROSION 4. Scale Formation. Of all the water problems, the formation of scale by ground water is by far the most Two concerns will immediately come to light when common. Usually this scale is due to the formation considering a water source heat pump, whether for of calcium carbonate, but magnesium carbonate or ground water or for a closed loop application: Will calcium sulfate may also be present. -
Page 36: Lake And Pond Installations
FIGURE 24 CLEANING WATER COIL Hose Bib (B) Isolation Valve Hose Bib (A) TO WATER COIL Pump FROM WATER COIL MIS-2750 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 37: Figure 25 Water Well System
Manual 2100-532B Page 37 of 46... -
Page 38: 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 39: Figure 26 Water Source H/P Cooling Cycle
FIGURE 26 WATER SOURCE HEAT PUMP Manual 2100-532B Page 39 of 46... -
Page 40: Figure 27 Water Source H/P Heating Cycle
FIGURE 27 WATER SOURCE HEAT PUMP Manual 2100-532B Page 40 of 46... -
Page 41: Service
SERVICE UNBRAZING SYSTEM COMPONENTS WARNING If the refrigerant charge is removed from a scroll equipped unit by bleeding the high side only, it is sometimes possible for the scrolls to seal, preventing Both the high and low side of the scroll pressure equalization through the compressor. -
Page 42: 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 43: Figure 28 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 44: Quick Reference Troubleshooting Chart For Water To Air Heat Pump
Coil Upstream Heat Auxillary Ductwork Restricted Undersized Dirty Filters Volume Defective Winding Motor Plugged Dirty Fins (Clg) Device Metering Restricted Plugged (Htg) Temperature Water (Clg) Volume Water (Htg) Volume Water (CLg) Coil Plugged Scaled (Htg) Coil Plugged Scaled (Htg) Device Metering Restricted Plugged... -
Page 45: 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 46 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.