Table of Contents
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CONTENTS
Document Conventions .......................................................3
Key to Symbols............................................................ 3
Safety Warnings..................................................................3
Model Nomenclature ...........................................................5
General Description ............................................................6
Inspecting and Storing the Equipment ..................................7
Moving and Storage ..................................................... 7
Initial Inspection .......................................................... 7
Inspection and Unpacking Prior to Installation.................. 7
Unit Installation ..................................................................8
Location Selection...............................................................8
Protecting the Unit During Construction ...............................9
Return and Supply Air Duct Flanges Preparation ...................9
Mounting Vertical (VT) Units................................................9
Horizontal (HZ) Units...........................................................9
Configuring the Horizontal Supply Air Orientation ............. 9
Mounting Horizontal (HZ) Units.................................... 10
Installing the Hanging Bracket Kit ................................. 11
Condensate Drain .............................................................12
Duct System .....................................................................12
Piping...............................................................................13
Flow Regulation......................................................... 13
Flushing ................................................................... 14
Electrical-power Supply Wiring .........................................14
High-Voltage Wiring.................................................... 14
Units with Dual Power Supplies.................................... 15
460-V Models with Constant Airflow Motors .................. 15
Transformer Settings for 208/230-V Units .................... 15
Electrical-Low-Voltage Wiring ...........................................15
Thermostat ............................................................... 15
VA Capacity .............................................................. 16
Thermostat to HVAC Equipment Wiring ......................... 16
Remote Sensor to Programmable Thermostat ................ 17
ECM Interface Board .................................................. 18
Specific Application Considerations ...................................19
Well Water Systems ................................................... 19
Open Well Water Systems ........................................... 20
Cooling Tower/Boiler Systems ..................................... 21
Geothermal Closed-Loop Systems ............................... 22
Water Quality Considerations ............................................23
Post-Installation System Checkout .....................................25
Pre-Start-Up .....................................................................25
Air Coil ..................................................................... 25
Scroll Compressor Rotation......................................... 25
8733829041 (2021/07)
Operating Limits ........................................................25
Start-up............................................................................ 26
Unit Start Up Cooling Mode..........................................26
Unit Start Up Heating Mode .........................................26
Commissioning ................................................................. 26
Safety Devices and the UPM Controller Overview................ 27
DecStar® Motor Technology Overview................................ 31
Motor Performance Data .............................................32
Options ............................................................................ 33
Extended Range Option ..............................................33
Unit Mounted Non-Fused Disconnect Switch ..................33
Internal 2-Way Water Valve..........................................33
Economizer...............................................................33
Maintenance .................................................................... 35
Troubleshooting ............................................................... 36
Unit Troubleshooting ..................................................36
Specification Tables.......................................................... 43
Operating Temperatures and Pressures.........................43
Water-Side Pressure Drop Table ..................................46
Compressor Characteristics ........................................47
Corner Weights (Horizontal Cabinets Only) ....................48
Water Coil Volume......................................................48
Wiring Diagrams ............................................................... 49
EON Motors...............................................................49
Dimensional Drawings....................................................... 51
Vertical Units .............................................................51
Horizontal Units .........................................................52
Exploded Views for Spare Parts Selection........................... 55
Main Components Exploded View.................................55
Horizontal Cabinet Exploded View ................................56
Vertical Cabinet Exploded View ....................................57
Terminology ..................................................................... 58
Acronyms .................................................................58
Terms.......................................................................58
Decommissioning Information ........................................... 59
Protecting the Environment .........................................59
Check-Out Sheet............................................................... 60
Notes ............................................................................... 61
Subject to change without prior notice
QV Series Heat Pumps
QV Series Heat Pumps
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