Install Instructions

Models HZD/H/V 024 - 070
INSTALLATION, OPERATION,
& MAINTENANCE
Table of Contents
Model Nomenclature 3
General Information 4
Unit Physical Data 6
Horizontal Installation 7
Field Conversion of Air Discharge 9
Horizontal Installation 10
Vertical Installation 11
Piping Installation 13
vFlow™ Heat Pump Applications Overview 14
Water-Loop Heat Pump Applications 17
Ground-Loop Heat Pump Applications 18
Ground-Loop and Ground Water Heat
Pump Applications 19
Ground-Water Heat Pump Applications 20
Water Quality Standards 22
Electrical - Line Voltage 23
Electrical Data 25
Electrical - Power & Low Voltage Wiring 26
Electrical - Low Voltage Wiring 27
Electrical - Low Voltage Wiring for non-vFlow
™
Units
Using External Motorized Water Valve 28
Electrical - Thermostat Wiring 29
Blower Performance Data 30
ECM Blower Control 31
Typical Wiring Diagram - Single Phase Units 32
Typical Wiring Diagram - Single Phase Unit
with Variable Pump 33
DXM2 Controls 34-38
DXM2 Layout and Connections 39
ClimaDry II Modulating Reheat Option 40-42
Unit Starting and Operating Conditions 43
Piping System Cleaning and Flushing 44
Flushing and Purgingwith ClimaDry II 45
Unit and System Checkout 46
Unit Start-Up Procedure 47
Unit Operating Conditions 48-50
Preventive Maintenance 51
Troubleshooting 52
DXM2 Process Flow Chart 54
Functional Troubleshooting 55
Performance Troubleshooting 57
Start-Up Log Sheet 59
Functional Troubleshooting 60
Warranty (U.S. & Canada) 61
Revision History 64