Bard QW Series Installation Instructions Manual
Geothermal r-410a staged capacity packaged heat pump
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INSTALLATION INSTRUCTIONS
QW SERIES GEOTHERMAL R-410A
STAGED CAPACITY PACKAGED HEAT PUMP
QW2S2-A
QW2S2-B
QW2S2-C
QW2S2DA
QW2S2DB
QW2S2DC
Temperatures 25 – 110
Ground Water Temperature 45 – 75
Models:
QW3S2-A
QW3S2-B
QW3S2-C
QW3S2DA
QW3S2DB
QW3S2DC
Earth Loop Fluid
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
QW4S2-A
QW5S2-A
QW4S2-B
QW5S2-B
QW4S2-C
QW5S2-C
QW4S2DA
QW5S2DA
QW4S2DB
QW5S2DB
QW4S2DC
QW5S2DC
Manual No.:
Supersedes:
Date:
MIS-2736
MIS-2736
2100-577C
2100-577B
7-25-17
Page
1 of 50
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Table of Contents
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Summary of Contents for Bard QW Series
- Page 1 INSTALLATION INSTRUCTIONS QW SERIES GEOTHERMAL R-410A STAGED CAPACITY PACKAGED HEAT PUMP Models: QW2S2-A QW3S2-A QW4S2-A QW5S2-A QW2S2-B QW3S2-B QW4S2-B QW5S2-B QW2S2-C QW3S2-C QW4S2-C QW5S2-C QW2S2DA QW3S2DA QW4S2DA QW5S2DA QW2S2DB QW3S2DB QW4S2DB QW5S2DB QW2S2DC QW3S2DC QW4S2DC QW5S2DC Earth Loop Fluid Temperatures 25 – 110 Ground Water Temperature 45 –...
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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 ........34 Copper Water Coil Application ......34 QW General Information Start Up Procedure for Closed Loop System ..35 QW Model Nomenclature........ - Page 3 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 FOR MORE INFORMATION, CONTACT THESE These publications can help you install the air conditioner or heat pump. You can usually find these PUBLISHERS: at 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 General Information Qw Model Nomenclature
QW SERIES GEOTHERMAL R-410A STAGED CAPACITY GENERAL INFORMATION MODEL NUMBER | COIL OPTIONS FILTER OPTIONS Q-TEC™ Model C – Copper water X – 2-Inch Pleated 0Z – OKW N – Cupronickel (MERV8) CAPACITY | 2 – 2 Ton VOLTS & PHASE 3 –... -
Page 6: Figure 1 Unit Dimensions
Manual 2100-577C Page 6 of 50... -
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 SHIPPING LOCATION (UNITS WITH national 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 MODEL "A" DUCT FIXED CEILING QW2S, QW3S 25" "A" DUCT FLANGE QW4S, QW5S 30"... -
Page 11: Duct Work
DUCT WORK When used with a ducted supply, a QCX Cabinet 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 10 inches where a water trap can be installed between (Optional – only used with one of the the unit and the interior wall (see Figure 8B). The trap vent options) cannot extend beyond the edge of the unit or it will A mist eliminator is supplied with the wall sleeve. -
Page 14: Figure 9 Removal Of Q-Tec Erv
disconnect this plug, the tabs on both sides of the Q-TEC Energy Recovery Ventilator Option plug must be squeezed to release the plug. While Before starting the removal make sure that the power squeezing the tabs, pull the plug out of the socket. has been turned off. -
Page 15: Installation
INSTALLATION MOUNTING THE UNIT 7. Position side trim pieces to the wall and attach with field-supplied screws. There are two long and When installing a QW unit near an interior wall on the two short pieces supplied. The long pieces are to left side, a minimum of 8 inches is required;... -
Page 16: 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 2100-577C Page 16 of 50... -
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 2100-577C Page 17 of 50... -
Page 18: Wiring - Main Power
WIRING – MAIN POWER The standard Climate Control Option X is a remote thermostat connection terminal block. See Figure 14 Refer to the unit rating plate and/or Table 2 for wire for wiring diagram. Compatible thermostats are listed sizing information and maximum fuse or circuit breaker in Table 3. -
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 The “W1/E” terminal is the emergency heat signal and supplied through Pin #10 of Plug P2. 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 Temp. and Humidity Controller Controller Low Voltage Part #8403-081 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 CO2 Controller Terminal PLUG #1 Part #8403-067... -
Page 21: Figure 15 Factory Mounted T-Stat Wiring "D" Option
FIGURE 15 Factory-Mounted Thermostat Wiring Diagram “D” Thermostat Option Purple/White D/YO Red/Yellow W1/E Purple Brown/White PLUG #2 Orange Yellow Blue Brown Red/White Black/White Pink Temp. and Humidity Controller Part #8403-060 4115-100 A Manual 2100-577C Page 21 of 50... - Page 22 FIGURE 16 Factory-Mounted Thermostat and 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 CO2 Controller Part #8403-067 PLUG #1 24VAC Black Black...
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Page 23: Figure 16 Factory Mounted T-Stat Wiring "H" Opt . 22 Figure 17 Remote Thermostat Wiring "K" Option
FIGURE 17 Remote Thermostat with Mounted/Wired CO Control Wiring Diagram “K” Thermostat Option Low Voltage Terminal Strip Red/Yellow Purple Brown/White PLUG #2 Orange Yellow Blue Brown Red/White Black/White Pink CO2 Controller Part #8403-067 PLUG #1 24VAC Black Black Yellow CO2-OUT Yellow Orange Green... -
Page 24: Figure 18 Fact. Mounted T-Stat "1" & "3" Opt
Temperature/Humidity Control "1" & "3" Option Wiring Diagram Plug #2 9 Purple/White Brown/White Brown W1/E Red/Yellow Purple Yellow Blue Orange Red/White Black/White Black/White Gray Pink Gray COMPLETESTAT TEMPERATURE, HUMIDITY, AND OCCUPANCY CONTROLLER. BARD PART# CS9B-THO ALARM RELAY OR CS9BE-THO 4115-108 Manual 2100-577C Page 24 of 50... -
Page 25: Figure 19 Fact. Mounted Completestat™ Opt
Control "2" & "4" Option Wiring Diagram Plug #2 9 Purple/White Brown/White Brown W1/E Red/Yellow Purple Yellow Blue Orange Red/White Black/White Black/White Gray Pink Gray COMPLETESTAT TEMPERATURE, HUMIDITY, OCCUPENCY, AND CO2 CONTROLLER. BARD PART# CS9B-THOC ALARM RELAY OR CS9BE-THOC 4115-109 Manual 2100-577C Page 25 of 50... -
Page 26: Start Up
START UP DESCRIPTION OF STANDARD During routine operation of the unit with no power EQUIPMENT interruptions the compressor will operate on demand with no delay. Low Pressure Switch High Pressure Switch and Lockout Sequence NOTE: This unit is supplied with two low pressure If the high pressure switch opens, the compressor switches installed, a 55 PSIG and a 75 PSIG. -
Page 27: Adjustments
ADJUSTMENTS equal to 2 minutes plus 10% of Delay on break (DOB) setting. See Delay on make timing chart on page 28. Adjustable Delay On Make and Delay On Break Timer During routine operation of the unit with no power interruptions the compressor will operate on demand The potentiometer is used to select delay on break time with no delay. -
Page 28: Optional Cfm
Delay On Make Timing .05 minutes (30 seconds) 123 seconds DOM 1.0 minutes (60 seconds) 126 seconds DOM 2.0 minutes (120 Seconds) 132 seconds DOM 3.0 minutes (180 seconds) 138 seconds DOM 4.0 minutes (240 seconds) 144 seconds DOM 5.0 minutes (300 seconds) 150 seconds DOM SERVICE HINTS... -
Page 29: Pressure Service Ports
PRESSURE SERVICE PORTS PIPING ACCESS TO UNIT High and low pressure service ports are installed on Water piping to and from the coaxial water coil is all units so that the system operating pressures can be intended to enter/exit the unit through the rectangular hole (See Figures 1, 8A, 21 and 22). -
Page 30: Figure 21 Fluid Connections W/Ventilation Wall Sleeve
FIGURE 21 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 22 Fluid Connections W/O Ventilation Wall Sleeve
FIGURE 22 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 32: Pressure Tables
TABLE 5 Pressure Table Return Air FULL LOAD COOLING – Fluid Temperature Entering Water Coil °F Model Pressure Temperature 30°F 35°F 40°F 45°F 50°F 55°F 60°F 65°F 70°F 75°F 80°F 85°F 90°F 95°F 100°F 105°F 110°F 75° DB Low Side 62°... -
Page 33: Optional Accessories
Manual 2100-577C Page 33 of 50... -
Page 34: Closed Loop
The design eliminates most causes of system failure. eliminate this problem. 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 35: Start Up Procedure For Closed Loop System
START UP PROCEDURE FOR CLOSED recheck the selection of the loop pump module LOOP SYSTEM model for sufficient capacity. If the module selection is correct, there is probably trapped air or 1. Be sure main power to the unit is OFF at a restriction in the piping circuit. -
Page 36: Figure 25 Performance Model Wgpm-1C
FIGURE 25 PERFORMANCE MODEL DORFC-1 LOOP PUMP MODULE FIGURE 26 PERFORMANCE MODEL DORFC-2 LOOP PUMP MODULE Manual 2100-577C Page 36 of 50 Manual 2100-577 Page 36 of 50... -
Page 37: Open Loop (Well System Applications)
OPEN LOOP (Well System Applications) TABLE 7 WATER CONNECTIONS Constant Flow Valves It is very important that an adequate supply of clean, Min. Available noncorrosive water at the proper pressure be provided Part No. Flow Rate GPM Pressure PSIG before the installation is made. Insufficient water, CFV-5 15 ... -
Page 38: 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 responsibility of the well drilling contractor. It is meter to a drain or sink. -
Page 39: Water Corrosion
WATER CORROSION 4. Scale Formation. Of all the water problems, the formation of scale by ground water is by far the Two concerns will immediately come to light when most common. Usually this scale is due to the considering a water source heat pump, whether for formation of calcium carbonate, but magnesium ground water or for a closed loop application: Will carbonate or calcium sulfate may also be present. -
Page 40: Lake And Pond Installations
FIGURE 28 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 41: Figure 29 Water Well System
Manual 2100-577C Page 41 of 50... -
Page 42: 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 43: Figure 30 Water Source H/P Cooling Cycle
FIGURE 30 Water Source Heat Pump Manual 2100-577C Page 43 of 50... -
Page 44: Figure 31 Water Source H/P Heating Cycle
FIGURE 31 Water Source Heat Pump Manual 2100-577C Page 44 of 50... -
Page 45: Service
SERVICE WARNING UNBRAZING SYSTEM COMPONENTS If the refrigerant charge is removed from a scroll equipped unit by bleeding the high side only, it is Both the high and low side of the scroll sometimes possible for the scrolls to seal, preventing compressor must be checked with manifold pressure equalization through the compressor. -
Page 46: Troubleshooting Ge Ecm™ Blower Motors
TROUBLESHOOTING GE ECM 5.0 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 - Check for air whistling through seams in ducts, cabinets or panels from the motor’s capacitors, disconnect power and wait... -
Page 47: Figure 32 Control Disassembly
Replacing ECM Control Module replacement list. USING THE WRONG CONTROL WILL RESULT IN IMPROPER OR NO BLOWER OPERATION. To replace the control module for the GE variable-speed indoor Orient the control module so that the 3-wire motor plug blower motor you need to take the following steps: can be inserted into the socket in the control. -
Page 48: Quick Reference Troubleshooting Chart For Water To Air Heat Pump
Manual 2100-532G Page 46 of 48 Manual 2100-577C Page 48 of 50... -
Page 49: Ground Source Heat Pump
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 50 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.