Bard QW 2S2-A, QW 3S2-A, QW 4S2-A, QW 5S2-A, QW 2S2-B, QW 3S2-B, QW 4S2-B, QW 5S2-B, QW 2S2-C, QW 3S2-C, QW 4S2-C, QW 5S2-C geothermal heat pump Installation instructions

Bard QW 2S2-A, QW 3S2-A, QW 4S2-A, QW 5S2-A, QW 2S2-B, QW 3S2-B, QW 4S2-B, QW 5S2-B, QW 2S2-C, QW 3S2-C, QW 4S2-C, QW 5S2-C geothermal heat pump Installation instructions

The QW Series Geothermal R-410A Staged Capacity Packaged Heat Pump is a high-efficiency, energy-saving heating and cooling system that utilizes the earth's stable temperature to provide year-round comfort. This system is ideal for residential and commercial applications where energy efficiency and environmental responsibility are top priorities. With its staged capacity design, this heat pump can adjust its output to meet the specific heating or cooling needs of your space.

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MIS-2736

Earth Loop Fluid
Temperatures 25 – 110
Ground Water Temperature 45 – 75
INSTALLATION INSTRUCTIONS
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
Manual No.: 2100-577A
Supersedes: 2100-577
Date: 3-27-15
QW SERIES GEOTHERMAL R-410A
STAGED CAPACITY PACKAGED HEAT PUMP
Models:
QW2S2-A
QW2S2-B
QW2S2-C
QW3S2-A
QW3S2-B
QW3S2-C
QW4S2-A
QW4S2-B
QW4S2-C
QW5S2-A
QW5S2-B
QW5S2-C
Manual 2100-577A
Page 2 of 50
CONTENTS
Getting Other Information and Publications
For more information, contact these publishers: ...... 4
QW General Information
QW Model Nomenclature....................................... 5
Shipping Damage ................................................. 7
Unit Removal From Skid ....................................... 7
Handling Unit After Removal From Skid ................. 7
Removal of Wall Bracket from Shipping Location ..... 8
General ............................................................... 8
Minimum Installation Height ................................. 8
Duct Work ......................................................... 11
Filters ............................................................... 11
Condensate Drain ............................................... 11
Mist Eliminator Service ....................................... 13
Installation
Mounting the Unit .............................................. 15
Wiring – Main Power ........................................... 18
Wiring – Low Voltage Wiring................................. 18
General ............................................................. 18
Low Voltage Connections ..................................... 19
Start Up
Description of Standard Equipment ...................... 26
Adjustments ...................................................... 27
Optional CFM .................................................... 28
Important Installer Note ...................................... 28
Phase Monitor .................................................... 28
Service Hints ..................................................... 28
Sequence of Operation........................................ 28
Pressure Service Ports ........................................ 29
Piping Access to Unit ......................................... 29
Pressure Tables .................................................. 32
Optional Accessories........................................... 33
Closed Loop (Earth Coupled Ground Loop
Applications)
Circulation System Design ................................... 34
Copper Water Coil Application ............................. 34
Start Up Procedure for Closed Loop System .......... 35
Open Loop (Well System Applications)
Water Connections .............................................. 37
Well Pump Sizing ............................................... 38
Start Up Procedure for Open Loop System ............ 38
Water Corrosion .................................................. 39
Remedies of Water Problems ............................... 39
Lake and Pond Installations ................................ 40
Cooling Tower/Boiler Application .......................... 42
Service
Unbrazing System Components............................ 45
Troubleshooting GE ECMâ„¢ Blower Motors .............. 46
Quick Reference Troubleshooting Chart for
Water to Air Heat Pump......................................... 48
Ground Source Heat Pump
Performance Report .............................................. 49
Manual 2100-577A
Page 3 of 50
Figures
Figure 1 Unit Dimensions .................................. 6
Figure 2 Removal of Unit From Skid ................... 7
Figure 3 Proper Handling of Unit After Removal
from Skid ............................................ 8
Figure 4 Installation of Unit w/Wall Sleeve .......... 9
Figure 5 Installation With Free Blow Plenum ..... 10
Figure 6 Ducted Application ............................ 10
Figure 7 Supply Duct Connections .................... 11
Figure 8A Condensate Drain ............................... 12
Figure 8B Optional Rear Drain ............................ 12
Figure 8C Rear Drain (Top View) ......................... 13
Figure 9 Removal of Q-TEC ERV ....................... 14
Figure 10 Remove Locking Screws from Wheels ... 15
Figure 11 Unit Mounting Without Wall Sleeve ...... 16
Figure 12 Component Location .......................... 17
Figure 13 Low Voltage Wire Harness Plug ............ 19
Figure 14 Remote Thermostat Wiring "X" Option .. 20
Figure 15 Factory Mounted T-Stat Wiring "D" Option ... 21
Figure 16 Factory Mounted T-Stat Wiring "H" Opt . 22
Figure 17 Remote Thermostat Wiring "K" Option ... 23
Figure 18 Fact. Mounted T-Stat "1" & "3" Opt. ..... 24
Figure 19 Fact. Mounted CompleteStatâ„¢ Opt. .... 25
Figure 20 CO2 Control Configuration................... 27
Figure 21 Fluid Connections w/Ventilation
Wall Sleeve........................................ 30
Figure 22 Fluid Connections w/o Ventilation
Wall Sleeve........................................ 31
Figure 23 Circulation System ............................. 34
Figure 24 Water Temperature and Pressure
Test Procedure ................................ 35
Figure 25 Performance Model WGPM-1C ............ 36
Figure 26 Performance Model WGPM-2C ............ 36
Figure 27 Piping Diagram .................................. 37
Figure 28 Cleaning Water Coil ............................ 40
Figure 29 Water Well System ............................. 41
Figure 30 Water Source H/P Cooling Cycle .......... 43
Figure 31 Water Source H/P Heating Cycle .......... 44
Figure 32 Control Disassembly ........................... 47
Figure 33 Winding Test...................................... 47
Figure 34 Drip Loop .......................................... 47
Tables
Table 1 Electrical Specifications ......................... 5
Table 2 Operating Voltage Range ....................... 18
Table 3 Wall Thermostats ................................ 18
Table 4 Indoor Blower Performance ................... 29
Table 5 Pressures ............................................ 32
Table 6 Optional Accessories ............................ 33
Table 7 Constant Flow Valves ............................ 37
Table 8 Water Flow and Pressure Drop ............... 42
Manual 2100-577A
Page 4 of 50
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.
National Electrical Code ..................... ANSI/NFPA 70
Standard for the Installation ............. ANSI/NFPA 90A
of Air Conditioning and Ventilating Systems
Standard for Warm Air ...................... ANSI/NFPA 90B
Heating and Air Conditioning Systems
Load Calculation for Residential ........ACCA Manual J
Winter and Summer Air Conditioning
Duct Design for Residential .............. ACCA Manual D
Winter and Summer Air Conditioning and Equipment
Selection
Closed-Loop/Ground Source Heat Pump ......... IGSHPA
Systems Installation Guide
Grouting Procedures for Ground-Source ......... IGSHPA
Heat Pump Systems
Soil and Rock Classification for the Design ..... IGSHPA
of Ground-Coupled Heat Pump Systems
Ground Source Installation Standards ............ IGSHPA
Closed-Loop Geothermal Systems – Slinky ..... IGSHPA
Installation Guide
FOR MORE INFORMATION, CONTACT THESE
PUBLISHERS:
ACCA Air Conditioning Contractors of America
1712 New Hampshire Avenue
Washington, DC 20009
Telephone: (202) 483-9370
Fax: (202) 234-4721
ANSI American National Standards Institute
11 West Street, 13th Floor
New York, NY 10036
Telephone: (212) 642-4900
Fax: (212) 302-1286
ASHRAE American Society of Heating Refrigerating,
and Air Conditioning Engineers, Inc.
1791 Tullie Circle, N.E.
Atlanta, GA 30329-2305
Telephone: (404) 636-8400
Fax: (404) 321-5478
NFPA National Fire Protection Association
Batterymarch Park
P.O. Box 9101
Quincy, MA 02269-9901
Telephone: (800) 344-3555
Fax: (617) 984-7057
IGSHPA International Ground Source
Heat Pump Association
490 Cordell South
Stillwater, OK 74078-8018
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Key Features

  • Geothermal R-410A
  • Staged Capacity
  • Packaged Heat Pump
  • Earth Loop Fluid Temperatures
  • Ground Water Temperature
  • Climate Control Options
  • Factory-Installed Pump and Piping Options

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Frequently Answers and Questions

What is the minimum installation height of the unit?
The minimum installation height for ducted applications is 8 ft. 9 inches. The minimum installation height of the unit with a Free Blow Plenum is 8 ft. 9 inches.
What is the purpose of the wall mounting brackets?
The wall mounting brackets are attached to the back of the unit and are used to secure the unit to the wall.
How do I remove the locking screws from the wheels?
To remove the locking screws from the wheels, use a screwdriver to remove the locking screws. You will then be able to roll the unit up to the wall mounting bracket.

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