Table of Contents
Document Conventions .......................................................4
Key to Symbols............................................................ 4
General Safety Instructions ..........
................................. 4
Refrigerant Safety Warnings..........
................................ 5
Model Nomenclature ...........................................................7
General Description ............................................................8
Operating Limits.......................................................... 9
Approved Supplementary Heaters..........
...................... 10
Inspecting and Storing the Equipment ................................11
Moving and Storage ................................................... 11
Initial Inspection..........
.............................................. 11
Inspection and Unpacking Prior to Installation..........
...... 11
Unit Installation ................................................................12
Location Selection ..................................................... 12
Minimum Conditioned Room Area ..........
...................... 13
Protecting the Unit During Construction..........
.............. 13
Return and Supply Air Duct Flanges Preparation..........
... 13
Mounting Vertical (VT) Units..........
.............................. 13
Horizontal (HZ) Units..........
........................................ 14
Condensate Drain..........
............................................ 17
Duct System ..........
................................................... 17
Piping ...................................................................... 18
Electrica
l—Power Supply Wiring..........
......................... 19
Electrical—Low-Voltage Wiring ..........
........................... 21
ECM Interface Board ..........
........................................ 23
Specific Application Considerations ...................................24
Well Water Systems ................................................... 24
Open Well Water Systems ..........
................................. 24
Cooling Tower/Boiler Systems..........
........................... 25
Geothermal Closed-Loop Systems ..........
..................... 26
Water-Quality Considerations............................................27
Post-Installation System Checkout .....................................29
Pre-Start-Up .....................................................................29
Air Coil..................................................................... 29
Checking Scroll Compressor Rotation..........
................. 29
Start-up............................................................................30
Unit Start Up Cooling Mode ......................................... 30
Unit Start Up Heating Mode..........
............................... 30
Commissioning .................................................................30
Safety Devices and the UPM Controller Overview................31
UPM Default Settings and DIP Switch Positions .............. 33
UPM Board Features ..........
........................................ 33
UPM Sequence of Operation..........
.............................. 35
Options ............................................................................36
Unit Mounted Non-Fused Disconnect Switch.................. 36
Internal Two-Way Water Valve..........
............................ 36
Economizer .............................................................. 36
Hot Gas Rehea
t ..........
............................................... 37
Boilerless Control ..........
............................................ 37
Option Card (included with Economizer, Hot Gas Reheat and/
or Boilerless control options).
.........
.............................38
Refrigerant Leak Detection System..........
.....................39
Electric Heat Option ..........
.........................................39
Hot Gas Bypass..........
................................................39
Pump Relay...............................................................39
DPS Water F
low Proving Switch ..........
.........................39
Heat Recovery Package (HRP)..........
............................39
HRP Water Tank Preparation..........
..............................41
Water Tank Refill..........
..............................................41
Initial Start-Up of a HRP System ..........
.........................42
Fan Motor Options ............................................................ 42
Constant Torque Motors (ECM)....................................42
Constant Airflow Motors (ECM)..........
..........................49
Maintenance .................................................................... 56
Filter Changes ...........................................................56
Annual Checkup..........
...............................................56
Annual Condensate Drain Cleaning ..........
.....................56
Handling Periodic Lockouts ...............................................56
Servicing and Repair Information....................................... 56
Personal Protective Equipment ....................................56
Confined Space Work ..........
.......................................56
Controlled Work Procedure ..........
...............................56
Safety Checks ..........
.................................................56
Checks to Electrical Devices ..........
..............................57
Repairs to Sealed Components ..........
..........................57
Repair to Intrinsically-Safe Components..........
..............57
Check Cabling ..........
.................................................57
Detection of Flammable Refrigerants ..........
..................57
Removal and Evacuation ..........
...................................58
Charging Procedures ..........
........................................58
Recovery ..................................................................58
Service Acc
ess ..........
................................................59
Decommissioning Information ........................................... 60
Protecting the Environment .........................................60
Decommissioning Procedure ..........
.............................60
Labeling....................................................................60
Troubleshooting ............................................................... 61
Unit Troubleshooting ..................................................61
Option Card Troubleshooting..........
.............................67
Specification Tables.......................................................... 68
Operating Temperatures and Pressures.........................68
Water-Side Pressure Drop Table ..........
........................74
Compressor Characteristics ..........
..............................75
Corner Weights (Horizontal Cabinets Only)..........
..........76
Model 24 Thermistor (Freeze Sensor) Test Values ..........
77
Wiring Diagrams............................................................... 78
Two-Stage, Single-Phase, Standard Unit with Constant
Torque (CT) Motor ..........
...........................................78
Two-Stage, Single-Phase, Standard Unit with Constant
Airflow (CA) Motor .
.........
...........................................79
Two-Stage, Single-Phase Unit with Optional Components and
CT Motor.
..................................................................80
Two-Stage
, Single-Phase Unit with Optional Components and
CA Motor .
.................................................................81
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CF Series Heat Pumps — 8733846299 (2024/11)
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