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Table of Contents
Model Nomenclature
3
Safety 4
General Information
5
Vertical Installation
6
Horizontal Installation
7
Condensate and Water Connection
10
vFlow
®
Heat Pump Applications Overview
11
Closed Loop Heat Pump Applications
w/Internal Flow Controller
12
Flushing the Earth Loop
14
Multiple Unit Piping and Flushing
17
Ground-Loop Heat Pump Applications
20
Closed Loop – External Central
Pumping Applications
22
Open Loop or Ground-Water Heat
Pump Applications
23
Water Quality Requirements
25
Hot Water Generator
29
Electrical – Line Voltage
32
Electrical – Low Voltage Wiring
33
Electrical – Thermostat Wiring
and Auxiliary Heat
34
Wiring Diagrams
35
Constant Volume (CV) ECM
37
Blower Performance Data
40
Controls – DXM2.5 41
Operating & Commissioning Limits
42
Unit & System Checkout
43
Unit Start-Up Procedure
44
Unit Operating Conditions
46
Performance Data
47
Preventive Maintenance
61
Troubleshooting 62
DXM2.5 Functional Troubleshooting Flow Chart 64
Functional Troubleshooting
65
Performance Troubleshooting
67
Troubleshooting Form
69
Warranty 70
Revision History
72
Tranquility
®
22 Digital
(TZ) Series
97B0072N11
Residential Horizontal & Vertical
Packaged Geothermal Heat Pumps
Installation, Operation &
Maintenance Instructions
Rev.: November 18, 2022