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INSTALLATION
INSTRUCTIONS
Earth Loop Fluid
Temperatures 25 – 110
Ground Water Temperature 45 – 75
© Copyright 2004
QW SERIES
WATER SOURCE
PACKAGED HEAT PUMP
Bard Manufacturing Company
Bryan, Ohio 43506
Since 1914...Moving ahead, just as planned.
Models:
QW242
QW302
QW361
QW421
QW481
QW601
Manual No.:
Supersedes:
File:
Date:
2100-419E
2100-419D
Vol II Tab 14
02-10-06
Manual 2100-419E
Page
1 of 48
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Table of Contents
Summary of Contents for Bard QW242
- Page 1 QW302 QW361 QW421 QW481 QW601 Earth Loop Fluid Temperatures 25 – 110 Ground Water Temperature 45 – 75 Bard Manufacturing Company Manual No.: 2100-419E Supersedes: 2100-419D 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 For more information, contact these publishers: ..4 Ground Loop Applications) Circulation System Design ........32 QW General Information Copper Water Coil Application ....... 32 QW Model Nomenclature ........5 Start Up Procedure for Closed Loop System .. - 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 and Subbase Figure 3 Proper Handling of Unit After Removal Combinations .........
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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 QW 36 1 - A 0Z B X V X X X MODEL NUMBER INTERNAL CONTROLS QW - QT Model X - Standard Water Source • High Pressure Switch Heat Pump •... -
Page 6: Figure 1 Unit Dimensions
Manual 2100-419E Page 6 of 48... -
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, preferably in writing, requesting inspection by the Exercise extreme caution when pushing 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 MIS-1555 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 MIS-1564 Manual 2100-419E Page 9 of 48... -
Page 10: Figure 5 Installation With Free Blow Plenum
FIGURE 5 INSTALLATION WITH FREE BLOW PLENUM CEILING MIS-1558 FLOOR FIGURE 6 DUCTED APPLICATION SUSPENDED FIXED CEILING DUCT 20 IN. CEILING MINIMUM DUCT FLANGE MIS-1559 FLOOR Manual 2100-419E Page 10 of 48... -
Page 11: Duct Work
DUCT WORK The QT series heat pumps are designed for use with 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 conditioning unit. -
Page 12: Figure 8 Condensate Drain
FIGURE 8 CONDENSATE DRAIN MIS-1568 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 . -
Page 13: Mist Eleminator 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 stating 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 MIS-1557 BOTTOM TRIM PIECE BOTTOM TRIM EXTENSION Manual 2100-419E Page 17 of 48... -
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 MIS-1556 Manual 2100-419E Page 18 of 48... -
Page 19: Wiring - Main Power
The subbase of the thermostat is factory wired to the used heater sizes. Also shown are the number of field front panel of the unit. Compatible for use with Bard power circuits required for the various models with CS2000A Controller and Energy Recovery Ventilator. -
Page 20: Low Voltage Connections
LOW VOLTAGE CONNECTIONS “W2” terminal or pin 9 of P2 is second stage heat (if equipped). If the unit is equipped with an optional hot These units use a grounded 24 volt AC low voltage water coil plenum box the water valve will be connected circuit. -
Page 21: Figure 15 Remote Thermostat Wiring "X" Option
FIGURE 15 REMOTE THERMOSTAT WIRING DIAGRAM “X” OPTION Manual 2100-419E Page 21 of 48... -
Page 22: Figure 16 Remote Thermostat Wiring "A" Option
FIGURE 16 REMOTE THERMOSTAT WIRING DIAGRAM “A” THERMOSTAT OPTION 4102-021A Manual 2100-419E Page 22 of 48... - Page 23 FIGURE 17 REMOTE THERMOSTAT WIRING DIAGRAM “D” THERMOSTAT OPTION 4102-022C Manual 2100-419E Page 23 of 48...
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Page 24: Start Up
START UP DESCRIPTION OF STANDARD If the high pressure switch opens, the compressor contactor will de-energize immediately. The lockout EQUIPMENT timer will go into a soft lockout and stay in soft lockout until the high pressure switch closes and the delay on LOW PRESSURE SWITCH break time has expired. -
Page 25: Optional Cfm
DELAY ON MAKE TIMING OPTIONAL CFM The phase monitor in this unit is equipped with two LEDs. If the Y signal is present at the phase monitor This option is not available for QW241 or QW301. and phases are correct, the green LED will light and contactor will energize. -
Page 26: Pressure Service Ports
HEATING – A 24V solenoid coil on reversing valve PRESSURE SERVICE PORTS controls heating cycle operation. Two thermostat High and low pressure service ports are installed on all options, one allowing “Auto” change over from cycle to units so that the system operating pressures can be cycle and the other constantly energizing solenoid coil observed. -
Page 27: Figure 17 Remote Thermostat Wiring "D" Option 23 Figure 18 Fluid Connections W/Ventilation Wall Sleeve
FIGURE 18 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 28: Figure 19 Fluid Connections W/O Ventilation Wall Sleeve
FIGURE 19 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 29: Pressure Tables
TABLE 5 PRESSURE TABLE COOLING 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 2100-419E Page 29 of 48... - Page 30 TABLE 6 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 2100-419E Page 30 of 48...
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Page 31: Optional Accessories
Manual 2100-419E Page 31 of 48... -
Page 32: Closed Loop
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 33: Start Up Procedure For Closed Loop System
START UP PROCEDURE FOR CLOSED model for sufficient capacity. If the module 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 34: Figure 22 Performance Model Wgpm-1C
FIGURE 22 PERFORMANCE MODEL WGPM-1C LOOP PUMP MODULE Flow (GPM) FIGURE 23 PERFORMANCE MODEL WGPM-2C LOOP PUMP MODULE Flow (GPM) Manual 2100-419E Page 34 of 48... -
Page 35: Open Loop (Well System Applications)
OPEN LOOP (Well System Applications) WATER CONNECTIONS TABLE 8 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 36: Well Pump Sizing
Strainer (5) installed upstream of constant flow valve well pump has enough capacity. It should also ensure (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 22 on preceding page shows the use of shutoff... -
Page 37: Water Corrosion
2. Suspended Particles in the Water. Filtering 10. Check the refrigerant system pressures against the will usually remove most suspended particles (fine heating refrigerant pressure table in installation sand, small gravel) from the water. The problem manual. Once again, if they do not match, check for with suspended particles in the water is that it will air flow problems and then refrigeration system problems. -
Page 38: Lake And Pond Installations
FIGURE 25 CLEANING WATER COIL HOSE BIB (A) ISOLATION VALVE HOSE BIB (B) ISOLATION VALVE TO WATER COIL FROM WATER COIL PUMP MIS-1570 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 39: Figure 26 Water Well System
Manual 2100-419E Page 39 of 48... -
Page 40: Cooling Tower / Boiler Application
L. Where the local conditions prevent the use of a In the heating mode, heat is absorbed from the source gravity drainage system to a lake or pond, you can water loop. A boiler can be utilized to maintain the loop instead run standard plastic piping out into the pond at the desired temperature. -
Page 41: Figure 27 Water Source H/P Cooling Cycle
FIGURE 27 WATER SOURCE HEAT PUMP COOLING CYCLE MIS-329 Manual 2100-419E Page 41 of 48... -
Page 42: Figure 28 Water Source H/P Heating Cycle
FIGURE 28 WATER SOURCE HEAT PUMP HEATING CYCLE MIS-328 Manual 2100-419E Page 42 of 48... -
Page 43: Service
SERVICE SERVICE HINTS WARNING 1. Maintain clean air filters at all times. Also, do not to needlessly close off supply and return air registers. This reduces air flow 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 44: Troubleshooting Ecm Blower Motors
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. a t l a t l Moisture Check t ' n a i l a l l . - Page 45 t n i n i l a t l s " " g a t l B " f " c i t c i l " " s f f u " s t l i f p " f f u ? "...
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Page 46: Quick Reference Troupbleshooting Chart For Water To Air Heat Pump
Manual 2100-419E Page 46 of 48... -
Page 47: 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 48 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.
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