Submittal Sheet

LII99-1
ICM
318
DEFROST TIMER
6333 Daedalus Drive, Cicero, N.Y. 13039
visit us on the web at: www.icmcontrols.com
800-365-5525 ICM CONTROLS
WIRING DIAGRAM
SPECIFICATIONS
Input
• Voltage: 18-30 VAC
• Frequency: 50-60 Hz
• Power Consumption: 1 watt maximum
Output
• O, W2:
– Type: Relay
– Form: DPST, normally open
– Rating: 2 amps @ 30 VAC
• DF1, DF2:
– Type: Relay
– Form: SPST, normally closed
– Rating: 1/2 HP @ 240 VAC
Time Delays
• Defrost: Fixed at 10 minutes (+/- 10%)
• Interval Between Defrost:
– Pin selectable (30/60/80 minutes)
• Test Time: Short across test terminals before
startup to reduce time by 256x
Mechanical
• Dimensions: 3.6” x 3.4”
• Mounting: Surface mount using (4) #6 or #8
screws, or plastic stand offs
•
Lowcostdefrostcontrol
DR = Defrost Relay Coil
DFT = Defrost Thermostat
RVS = Reversing Valve SolenoidLPS = Low Pressure Switch
HPS = High Pressure Switch
In-
door
T’Stat
24 VAC
DF1 DF2
Outdoor
Fan
Compressor DRRVS
HPS LPS
DFT
DFT
R
R
W2
O
O
Y
C