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ICM Controls ICM300C Installation guide

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ICM
300
DEFROST TIMER
SPECIFICATIONS
Input
•Voltage: 18-30 VAC
•Frequency: 50-60 Hz
•PowerConsumption: 1 watt maximum
Output
•Ratings:
–Type: Relay –
Form: SPST, normally open
–Maximum: 1 amp
Time Delays
•Defrost: Fixed at 10 minutes (+/- 5%)
•IntervalBetweenDefrost:
– Pin selectable (30/60/90 minutes)
•ResetTimeforPowerOn: 500 ms
•TestTime: Short across test terminals
before startup to reduce time
by 256x
Mechanical
•Dimensions: 3” x 2.875”
•Mounting:
Surface mount using (4) #6 or #8
screws, or plastic standoffs
•
Integrates multiple time and temperature defrost functions into a
compact, open board with same footprint as Carrier 621
WIRING DIAGRAM
INSTALLATION
1. Disconnect power.
2. Connect terminals as shown in the wiring
diagram below.
3. Reapply power, check operation.
DR = Defrost Relay Coil
DFT = Defrost Thermostat
** When replacing boards with an RST
terminal, tie RST wire to common
24 VAC
24 VAC
HOLD
OUT
COM
30 60 90
TEST
** RST
Wire
DR
DFT
T’STAT
7313 William Barry Blvd.
North Syracuse, NY 13212
ICM CONTROLS 800.365.5525
www.icmcontrols.com
LII267-1
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