ICM (Obsolete/Legacy Products)
ICM6502
ICM (Obsolete/Legacy Products)
ICM6502
Air Handling Controller
The ICM6502 is a package unit heat pump control board designed to provide control of the compressor, reversing valve, auxiliary heat elements, the condenser and evaporator fans. The ICM6502 also accepts inputs from a thermostat, indoor coil temperature, outdoor coil temperature, outdoor ambient temperature, indoor room temperature and a shutdown switch (front desk). The ICM6502 provides compressor protection from short cycling with an anti-short cycle timer and low ambient lockout. A built-in defrost cycle will protect the outdoor coil from freezing up when in heating mode.
- Power interruption protection for the compressor
- Random Start delay
- 6-minute anti-short cycle timer protects compressor from rapid short cycling
- Two stages of heating (compressor & auxiliary back up heat)
- Low outdoor ambient compressor lockout (cooling/heating)
- Steady state cooling
- Low indoor coil temperature cooling shut down
- Low outdoor coil defrost lockout (defrost mode)
- Low indoor room ambient (RS) auxiliary heat mode
- Front Desk shut down switch input
- Speed up test mode reduces timing for field testing of the board
Input
- L1 & L2: 240 VAC system power connections
- Control Voltage: 24VAC
- G: Fan
- W1/Y: Heat/Cool – Stage 1
- W2: Auxiliary Heat – Stage 2
- O: Reversing Valve
- FD: Front Desk Switch
- RS: Indoor Room Sensor
- Indoor: Indoor Coil Sensor
- Outdoor: Outdoor Coil Sensor
- Cooling Lockout: Outdoor Ambient Sensor
Output
- Compressor, K5, K6: 10 FLA @240 Vac
- Low Speed Evap. Fan, K9: 2FLA @240 Vac
- High Speed Evap. Fan, K11: 2FLA @240 Vac
- Auxiliary Heat Stage 1, K1, K2: 21A Resistive @240 VAC
- Auxiliary Heat Stage 2, K3, K4: 21A Resistive @240VAC
- Reversing Valve, K8: 24 Vac 5VA
- Condenser Fan, K7: 24 Vac 1A Pilot Duty
Environment
- Operating temperature: -40°C to +70°C (-40°F to +158°F)
- Storage temperature: -40°C to +85°C (-40°F to +185°F
Weight/Dimensions
- Width: 7.50″
- Height: 5.50″
ClimaTek/First Company: CB1025, CB1026