Packaged Heat Pump
December
Model Number
Installation Operation Maintenance
Model Number Description
Warnings and Cautions
WC-IOM-7 Packaged Heat Pump
Contains Refrigerant
Hazardous Voltage w/Capacitors
Equipment Damage From Ultraviolet UV Lights
Contents
Contents
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Heat Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 WCZ, WCY, WCX, WCC, WCD, WCH, WCM, WCP and WSC Parts Only. . . . 57 Models Less Than 20 Tons for Commercial Use*. . . . . . . . . . . . . . . . . . . . . . 57 Heat Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Standard Equipment Warranty Terms and Conditions. . . . . . . . . . . . . . . . . . 58 Commercial Equipment Warranty and Liability . . . . . . . . . . . . . . . . . . . . . . . 58 Models Larger that 20 Tons for Commercial Use*
Contents
Minor design sequence
Service digit
Model Number Description
Digit
Unit Description
General Information
Unit Nameplate
Compressor Nameplate
RTOM - ReliaTel Options Module Optional
Clogged Filter Switch Optional
System Input Devices & Functions
General Information
High Pressure Control Optional
Compressor Disable CPR1/2
Power Exhaust Control Optional
Low Pressure Control
Zone Sensor BAYSENS011B
Lead/Lag Control Dual Circuit Only
Zone Sensor Module ZSM BAYSENS007B
Zone Sensor Module ZSM BAYSENS009B
Remote Zone Sensor BAYSENS016A
High Temperature Sensor BAYFRST001A
Remote Zone Sensor BAYSENS013C
Remote Zone Sensor BAYSENS014C
Unit Inspection
Smoke Detector Sensor Optional
General Information
Storage
Precautionary Measures
Fiberglass Wool
First Aid Measures
General Information
Unit Clearances
WC-IOM-7 Packaged Heat Pump
Unit Dimensions
Packaged Heat Pump WC-IOM-7
Unit Dimensions
WC-IOM-7 Packaged Heat Pump
Figure 4. Unit Dimensional Data 20 Ton
Figure 5. Roofcurb Dimensional Data 20 Ton
Unit Dimensions
Figure 7. Horizontal Duct Dimensional Data 20 Ton
Unit Dimensions
Packaged Heat Pump WC-IOM-7
Figure 8. Rigging and center of gravity data
Typical weights and point loading data
Heavy Objects
Improper Unit Lift
Unit Dimensions
Rigging
General Unit Requirements
Installation
If a Curb Accessory Kit is not used
Foundation
Low Voltage Wiring AC & DC Requirements
Installation
Factory Installed Economizer
Main Electrical Power Requirements
Figure 9. Condensate Trap Installation
Condensate Drain Configuration
Filter Installation
Field Installed Power Wiring
NOTICE Use Copper Conductors Only
Main Unit Power
Standard Wiring
Optional TBUE Wiring
Installation
Field Installed Control Wiring
Control Power Transformer
Hazardous Voltage
Controls using 24 VAC
Installation
Packaged Heat Pump WC-IOM-7
Table 3. DC Conductors Zone Sensor Module wiring
Installation
RTRM
Smoke Detector Customer Low Voltage Wiring
Figure 12. Smoke detector wiring
Installation
WC-IOM-7 Packaged Heat Pump
Installation
Space Temperature Averaging
Installation
Packaged Heat Pump WC-IOM-7
Hazardous Voltage
Table 4. Temperature vs. Resistance
Installation
Temperature
Installation
Voltage Imbalance
Installation
Electrical Phasing Three Phase Motors
Live Electrical Components
Compressor Crankcase Heaters Optional
Packaged Heat Pump WC-IOM-7
ReliaTel Controls
Installation
Live Electrical Components
Service test guide for component operation
Pre-Start
Test Modes
ReliaTel Control
Pre-Start
Verifying Proper Air Flow
Units with Belt Drive Indoor Fan
Pre-Start
Return Air Smoke Detector
Compressor Start-Up
Start Up
Economizer Start-Up
Rotating Components
Start Up
Heating Start-Up
Scroll Compressors
Start Up
Final System Setup
Maintenance
Fan Belt Adjustment - Belt Drive Units
Rotating Components
Belt tension measurement and deflection ranges
Maintenance
Monthly Maintenance
value shown in Table
Maintenance
Return Air Smoke Detector Maintenance
Cooling Season
Filters
Coil Cleaning
Heating Season
Maintenance
Hazardous Pressures
Final Process
Maintenance
Maintenance
Sample maintenance log
Troubleshooting
Hazardous Service Procedures
ReliaTel Control
LED 1 System
Troubleshooting
System Status Checkout Procedure
Method
Method
LED 4 Service
Service Failure
System Failure
Troubleshooting
Resetting Cooling and Heating Lockouts
Heat Failure
Cool Failure
Troubleshooting
Zone Temperature Sensor ZTS Service Indicator
Clogged Filter Switch
Fan Failure Switch
Cooling Set Point CSP and Heating Set Point HSP
Zone Temperature Sensor ZTS Test
Test Zone Temperature Thermistor ZTEMP
Test
Test System Mode and Fan Selection
LED Indicator Test, SYS ON, HEAT, COOL & SERVICE
Testing serial communication voltage
Programmable & Digital Zone Sensor Test
Troubleshooting
ReliaTel Refrigeration Module RTRM Default Chart
System mode and fan selection chart
Unit Operation without a Zone Sensor
Unit Economizer Control ECA Troubleshooting
Troubleshooting
ReliaTel Control
Description
Wiring Diagrams
Drawing
Number
Warranty
Heat Pump
Models Less Than 20 Tons for Commercial Use
Models Larger that 20 Tons for Commercial Use
Warranty
Standard Equipment Warranty Terms and Conditions
Commercial Equipment Warranty and Liability
Page
12/04
Literature Order Number
WC-IOM-7
Date