Nordic TF75 Manuals

Manuals and User Guides for Nordic TF75. We have 1 Nordic TF75 manual available for free PDF download: Service Manual

Nordic TF75 Service Manual (106 pages)

Liquid to Air Split Geothermal Heat Pump

Brand: Nordic | Category: Heat Pump | Size: 19 MB

General Safety Precautions
2
Table of Contents
4
Tables & Documents
5
RS-Series System Description
6
General Overview
6
Heating Mode
6
Cooling Mode
6
Air Handler Options
6
RS-Series Sizing
7
Heat Pump Sizing
7
Plenum Heater Sizing
7
Installation Basics
8
A2L's
8
Unpacking the Unit
8
Unit Placement
8
Air Outlet & Return Orientation
8
Plenum Heater Installation (Optional)
8
Sample Bill of Materials - Ground Loop Installations
9
Sample Bill of Materials - Open Loop Installations
9
Wiring
10
Power Supply Connections
10
AHH/AHV Air Handler Power Connections
10
Auxiliary Plenum Heater: Power Supply Connections
10
Auxiliary Plenum Heater: Control Connections
10
Outdoor Loop Pump Module Wiring (Ground Loop Only)
10
Control Transformer
11
Bacnet Connections
11
Air Thermostat Connections
11
Air Thermostat Operation
11
Airflow Reduction for Zoning
11
Open/Closed Loop Wiring
11
Domestic Hot Water (Desuperheater)
12
Disable Switch (Field Installed)
12
RS Compressor Unit / Air Handler Control Connections
12
Refrigerant Vent Fan Connections
12
002823CDG - Typ. RS-Series Wiring Connections (Gen2)
13
Piping
14
RS Compressor Unit: Domestic Hot Water (Desuperheater)
14
RS Compressor Unit: Outdoor Loop
14
Air Handler: Condensate Drain
14
002516PDG - Typical Piping/Duct Connections
15
000970PDG - Desup. Connection to DHW Pre-Heat Tank
16
002384PDG - DHW Pre-Heat Tank - Multiple Units
17
Refrigeration Line Set
18
Line Set Interconnect Tubing
18
RS Compressor Unit Connections
18
AHH/AHV Air Handler Connections
18
Oil Traps
18
Filter-Dryer
18
Pipe Insulation
19
Silver Soldering Line Sets
19
Pressure Testing
19
Vacuuming the System
19
Charging the System
19
Ductwork
20
Blower Motor
20
Air Duct Zoning
20
Duct Systems - General
20
Duct Systems - Grill Layout
20
Thermostat Location
20
Plenum Heater
20
Duct Sizing Guide
21
Ground Loop Installations
22
Circulator Pump Module
22
Flushing & Purging
22
Adding Antifreeze Solution
23
Initial Pressurization
23
Pipe Insulation
23
000608INF - Typical Horiz. Ground Loop Configuration
24
000609INF - Typical Vert. Ground Loop Configuration
25
000906CDG - Circulator Pump Module Installation
26
001823CDG - Dual Flow Pump Module Installation
27
002336PDG - Pump Module Inst - 2 Units on 1 Loop
28
Open Loop Installations
29
Well Water Temperature
29
Well Water Flow
29
Well Water Quality
29
Water Discharge Methods
29
Water Valve
30
Water Flow Control
31
Submersible Pump Selection
31
Stage 1 Vs. 2 on Open Loop
31
Plumbing the Heat Pump
31
Pipe Insulation
31
000907CDG - Typical Open Loop Installation
32
001822CDG - Dual Flow Open Loop Installation
33
000619INF - Ground Water Disposal Methods
34
PC Application (PC App)
35
PC Application Menus
35
Windows Menu
35
LCD Interface & Menus
47
Bacnet Interface
48
Startup Procedure
52
Pre-Start Inspection
52
Unit Startup
53
Startup Record
54
Startup Data
54
Routine Maintenance
55
Coaxial Heat Exchanger Flushing Procedures
55
Maintenance Schedule
55
Troubleshooting Guide
57
Power Supply Troubleshooting
57
Recommended Action
57
Alarm Troubleshooting
58
Fault Troubleshooting
59
Compressor Troubleshooting
61
Operation Troubleshooting
62
Service Procedures
70
Servicing a Unit with an A2L Refrigerant
70
Pumpdown Procedure
72
General Repair Procedure
72
Vacuuming & Charging Procedure
72
Compressor Replacement Procedure
73
Control Board Replacement Procedure
74
LCD Interface (Display) Board Replacement Procedure
75
Decommissioning
76
Model Specific Information
77
Refrigerant Charge
77
Shipping Information
77
RS Compressor Unit Sound Levels
77
Operating Temperature Limits
77
Standard Capacity Ratings
78
Pressure Drop Data
79
Performance Tables
81
Electrical Specifications
85
Airflow Data
86
Wiring Diagrams: RS Compressor Unit
87
Wiring Diagrams: Air Handler
90
Refrigeration Circuit Diagram
91
Dimensions
92
Appendix A: Control Board Description
96
Appendix B: USB Driver Installation
100
Appendix C: PC App Installation (Win11)
101
Appendix D: PC App Installation (Win10)
102
Appendix E: Updating Firmware
103
Reset to Defaults
104
Warranty
106

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