Defrost Catalog by ICM

Featuring300301302303304315316318319320321322 LIC11

6333 Daedalus DriveCicero, NY 13069

TOLL FREE800-365-5525

FAX315-233-5276

Mode of OperationICM offers direct replacement defrost controls for some of the most popular heat pumps models.The defrost control product line represents a progression of control technology from the simplestnon-integrated time temperature controls to highly integrated controls

Product Line ReviewICM300 & 301• Simple Time Temperature Control• Must Have External Relays for Fan, Reversing Valve and Aux Heat• High Installed BaseICM302• Time Temperature Control With Integral Antishort Cycle Timer• Outdoor Fan and Reversing Valve Relay Integrated into Design• Field Wiring Connections providedICM303• Time Temperature Control with Integral Antishort Cycle Timer• Outdoor Fan and Reversing Valve Relay Integrated into Design• Safety Switch Lockout Function IncludedICM304• Time Temperature Control with Integral Antishort Cycle Timer• Outdoor Fan and Reversing Valve Relay Integrated into Design• Anti-Banger Feature where the reversing valve is energized 10 second after the outdoor fan relay

allowing some pressure equalizationICM315• Time Temperature Control• Solid State Replacement for Ranco E15 ControlICM316, 318, 320 & 322• Time Temperature Control• Outdoor Fan and Reversing Valve Relay Integrated into Design• High Installed BaseICM319 & 321• Time Temperature Control with Integral Antishort Cycle Timer• Outdoor Fan and Reversing Valve Relay Integrated into DesignICM Advantages• One Stop Shop• Excellent Applications Assistance• Made in USAMost Common HVAC Applications• Used in all heat pumps applications.

ICM P/N: 300, 301, 302, 303, 304, 315, 316, 318, 319, 320, 321, 322

Defrost ControlsDefrost Controls

DEFROST TIMERS SERIES 300


SpecificationsInput• Control Voltage: 18-30 VAC• Frequency: 50/60 Hz• Power Consumption: 1 watt maximum

Output• Type: Maximum relay• Form: SPST, Normally open• Rating: Maximum 2 amps

Time Delays• Defrost Time: Fixed at 10 min. +/- 5%• Interval Time Between defrosts:

Pin selectable 30/60/90 min.• Power On Reset Time: 500 milliseconds• Test Time: Short across test terminals

reduces test time by 256X

Mechanical• Dimensions: 3” X 2.875”• Mounting: Surface mount using

(4) #6 or #8 screws

Replaces• Amana: C64301-1

C6431001• Artesian: 10321-00• Arcoaire: 32312-00• Carrier: 621• Coleman: 3030A374• Goodman: B12260-06• Heil Quaker: HQ1052757• ICP: 1052757• Intertherm: 6208800• Lennox: 33G9501• Rheem: 47-21776-01• Snyder General:

1395-329• Honeywell: ST74A 1004

ST74A 1020ST74A 1038

• White Rodgers/Steveco: 90-621

• Therm-o-Disc 26E-10• Robertshaw: TD-10

Ultra low cost heat pump defrost timer,pin-for-pin campatible with OEM Type 621controls...The Series 300 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.• HOLD feature tracks compressor run times• Time and temperature terminate• 10 minute fixed defrost time• Pin-selectable: 30/60/90 minute defrost intervals• On-board test pins reduce test time by 256X• Replaces OEM Type 621 controls• Stable pin construction•

R

recognized: E118867

EnvironmentalOperating Temperature• -40°C to + 75°C, -40°F to +167°F

Transient Protection• Meets IEEE 587 Standards for Categories A & B without false

output or degradation.(6Kv 0.5 µs X 100 KHz Ring Wave) (6Kv 1.2 µs X 50 KHz Impulse Wave)

Mode of operationThe ICM300 provides a selectable time intervalbetween defrost cycles. It will allow a 10 minutedefrost every 30/60/90 minutes as long as the DFTis closed. A HOLD input allows the timer toaccumulate time while the compressor is running.Additionally, a warm coil causes the DFT to openwhich will prevent time accumulation or end thedefrost period. When the defrost period ends, eitherby opening of the DFT or after the 10 minute defrostperiod has elapsed, the timer is reset.Each ICM300 is shipped with detailed instructions.Consult factory for variations not listed.

R

C

Inpu

t24

VA

C

Test30

60

90

COM

OUT

24 VAC

HOLD

Thermostat DFT

DFR

Ladder Diagram

DFR: Defrost RelayCoil

DFT: DefrostTerminate/Door Sensor

Ordering Information

ICM300 Test Mode Times

EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

60 min. fixed

90 min. fixed

Compressor Run Times Defrost Times

PartNumber

ICM300

ProductCode

DFOS24A2

Description10 min. Defrost 30/60/90 min. intervals

TOLL FREE800-365-5525

FAX315-233-5276




Output• Type: Maximum relay• Form: SPST, Normally open• Rating: Maximum 2 amps

Time Delays• Defrost Time: Fixed at 10 min. +/- 5%• Interval Time Between defrosts: Pin selectable 30/60/90 min.• Power On Reset Time: 500 milliseconds• Test Time: Short across test terminals reduces test time by 256X

Mechanical• Dimensions: 3” X 2.875”• Mounting: Surface mount using (4) #6 or #8 screws

Replaces• Lennox: 86G16• Rheem: 47-21776-06• ICM: DFOSP

Ultra low cost heat pump defrost timer...The Series 301 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.• Sensor input for defrost terminate• Time and temperature terminate• 10 minute fixed defrost time• Pin-selectable: 30/60/90 minute defrost intervals• On-board test pins reduce test time by 256X• Hold input accumulates actual compressor runtime

regardless of disc thermostat condition prior todefrost

•R

recognized: E118867




Mode of operationThe ICM301 provides a selectable time intervalbetween defrost cycles. It will allow a 10 minutedefrost every 30/60/90 minutes as long as the DFTis closed on the SEN terminal. A HOLD input allowsthe timer to accumulate time while the compressoris running.A warm coil causes the DFT to open which willprevent time accumulation or end the defrost period.When the defrost period ends, either by opening ofthe DFT or after the 10 minute defrost period haselapsed, the timer is reset.Each ICM301 is shipped with detailed instructions.Consult factory for variations not listed.

R

C

Inpu

t24

VA

C

Test30

60

90

OUT

24 VAC

HOLD

The

rmos

tat

DFT

DFR

Ladder Diagram

DFR: DefrostRelay Coil

DFT: DefrostTerminate/DoorSensor


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

60 min. fixed

90 min. fixed


COM

SEN

Ordering InformationPart

NumberICM301

ProductCode

DFOSP24A2


TOLL FREE800-365-5525

FAX315-233-5276




Output• Type: Maximum relay• Form: SPST, Normally open• Rating: Maximum 2 amps @ 30 VAC

Time Delays• Defrost Time: Fixed at 10 min. +/- 5%• Interval Time Between defrosts: Pin selectable 30/60/90 min.• Power On Reset Time: 4 minutes• Test Time: Short across test terminals reduces test time

by 256X (DFT TST)

Mechanical• Dimensions: 4.5” X 5”• Mounting: Surface mount using plastic standoffs

Replaces• Nordyne: 621301A

621579B621579C

• Rheem: 47-21776-06• ICM: DFORB-AB1004

High power SPST fan relay output.Direct replacement for ICM DFORB...The Series 302 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.• Time and temperature terminate• 10 minute fixed defrost time• Pin-selectable: 30/60/90 minute defrost intervals• On-board test pins reduce test time by 256X• Strip heat, reversing valve outputs 24 VAC, 1 amp)• High power output (1/2 HP fan @ 240 VAC)• Integral short cycle protection•

R

recognized: E118867




Mode of operationThe ICM302 provides a selectable time intervalbetween defrost cycles. It will allow a 10 minutedefrost every 30/60/90 minutes as long as the DFTis closed on the DFT terminal.A warm coil causes the DFT to open which willprevent time accumulation or end the defrost period.When the defrost period ends, either by opening ofthe DFT or after the 10 minute defrost period haselapsed, the timer is reset. Additionally, the ICM302provides high power Strip Heat and Reversing Valveoutputs.Each ICM302 is shipped with detailed instructions.Consult factory for variations not listed.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

60 min. fixed

90 min. fixed



NumberICM302

ProductCode

DFORB-AB1004


TOLL FREE800-365-5525

FAX315-233-5276

DR = Defrost Recall CoilDFT = Defrost Thermostat

LPS = Low Pressure SwitchHPS = High Pressure Switch

RVS = Reversing Valve Solenoid

24VAC

Compressor DRRVS

DFT

DFT

E

R

R

W2

O

O

Y

C

T2

T1

HPS LPS

DF1 DF2

OutdoorFan

In-door

T’Stat


OutputO, W2, RV CC• Type: Maximum relay • Type: Maximum triac• Form: DPST, Normally open • Rating: 1 amp @ 30 VAC• Rating: 1 amp @ 30 VAC

CFM• Type: Maximum relay• Form: SPST, Normally open• Rating: 2 HP @ 230 VAC



Replaces• York: 9218-3741

03101251000• Evcon: 9218-374• ICM: DFORF

High power relay output...The Series 303 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.• Direct replacement for York 031012511000• Time and temperature terminate• Integral short cycle protection• Lock in defrost feature• High/low pressure switch monitoring• High power condensor relay output• Strip heat, reversing valve outputs•

R

recognized: E118867




Mode of operationThe ICM303 provides a selectable time intervalbetween defrost cycles. It will allow heat for theselected 30/60/90 minute period and provide a 10minute defrost.The ICM303 provides a lock in defrost feature,high/low pressure switch monitoring, a high powercondensor relay output (1 HP for 240 VAC), stripheat, and reversing valve outputs (24 VAC, 2 amp)Each ICM303 is shipped with detailed instructions.Consult factory for variations not listed.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

60 min. fixed

90 min. fixed



NumberICM303

ProductCode

DFORF24A2I300


TOLL FREE800-365-5525

FAX315-233-5276

R

OutdoorFan

Com NC

LO

U

CC

L

O

RV

W2

C

Y

Inpu

t 24

VA

C

T’Stat “Y”

Com

pres

sor

Heat Contactor

From Stat “O”

Reversing Valve

To Stat “L”

Thermistor

High Temperatureand Pressure LimitSwitch

Transformer Common

Time Delays• Defrost Time: Fixed at 10 min. +/- 5%• Interval Time Between defrosts: Pin selectable 30/60/90 min.• Power On Reset Time: 5 seconds• Test Time: Short across test terminals reduces test time by 256X

Mechanical• Dimensions: 4” X 6”• Mounting: Surface mount using (4) #6 or #8 screws• Sensor Jump: Short across SEN JMP terminal to short thermister

and put into defrost mode



Ultra low cost heat pump defrost timer,with high power relay outputs for 1/2 hpfan or strip heat...The Series 304 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.• Sensor input for defrost terminate• Time and temperature terminate• 10 minute fixed defrost time• Pin-selectable: 30/60/90 minute defrost intervals• On-board test pins reduce test time by 256X• Hold input accumulates actual compressor runtime

regardless of disc thermostat condition prior todefrost

•R

recognized: E118867




Mode of operationThe ICM304 provides a selectable time intervalbetween defrost cycles. It will allow heat for theselected 30/60/90 minute period and provide a 10minute defrost.A high power output (1/2 HP fan @ 240 VAC) isavailable. Also included on the ICM304 are strip heatand reversing valve outputs 924 VAC, 2 amp).Each ICM304 is shipped with detailed instructions.Consult factory for variations not listed.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

60 min. fixed

90 min. fixed



NumberICM304

ProductCodeAF1013


RV

Y/RV

CC

PS2

PS1

DF

FAN

PS

DFT

PS

Compressor

RVS

R/R

V

R C O Y W

TSTAInput

24 VAC

DR

TOLL FREE800-365-5525

FAX315-233-5276


OutputRVS, CC W• Type: Maximum triac • Type: Maximum triac• Rating: 1 amp @ 30 VAC • Form: SPST, Normally open

• Rating: 10 amps @ 250 VACFAN• Type: Maximum relay• Form: SPST• N.O.: 20 amps @ 240 VAC

Replaces• ICP: 1069364

Time Delays• Defrost Time:

Fixed at 10 min. +/- 5%• Interval Time

Between defrosts:Pin selectable 30/60/90 min.

• Power On Reset Time: 0-5 sec.• Test Time: Short across test terminals reduces test time

by 256X• Anti short cycle time: 3 min.

Mechanical• Dimensions: 3” X 2.875”• Mounting: Surface mount using (4) #6 or #8 screws• Sensor Jump: Short across SEN JMP terminal to short thermister

and put into defrost mode



Low cost, high performance solid statedefrost control replaces E-15 typecontrols, uses nyc-type sensor...The Series 315 is a reliable, solid state replacementfor E15-type controls. It uses a thermistor-typeprobe as opposed to the unstable bulb-type sensorsused with E15-type controls. The ntc-type probeof the ICM315 is less susceptable to breakage.Unlike E15 controls, the ICM315 is not “positionsensitive” and therefore not susceptable to “re-initiation phenomenon” which can cause damagedue to system short-cycling. The ICM315 is easyto mount and features a heavy-duty relay output.




Mode of operationThe ICM315 provides a selectable time interval(30/45/90 min.) between 10 minute defrost cycles.Upon application of power, the timing sequencebegins with the delay period first, and the 10 minutedefrost period second.When the thermistor senses a temperature of 28°For lower, the defrost board will be controlled by it’sinternal timer. The relay will be energized every 30,45, or 90 minutes based upon the post selected. Ifduring the 10 minute defrost period, the temperaturerises to 55°F or greater, the defrost period willterminate. If this condition does not occur, the defrostperiod will complete and the entire sequence willrepeat.The on-board relay (K1) will be energized only duingthe 10 minute defrost period.Each ICM315 is shipped with detailed instructions.Consult factory for variations not listed.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

10.55 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

45 min. fixed

90 min. fixed



NumberICM315

ProductCode

AA1010-E15


TOLL FREE800-365-5525

FAX315-233-5276

SpecificationsInput• Control Voltage: 24, 120 or 240 VAC VAC• Frequency: 50/60 Hz• Power Consumption: 1 watt maximum

Output• Type: Maximum triac• Rating: 1 amp @ 30 VAC• N.O.: 20 amps, N.C.: 10 amps (@ 240 VAC)

Time Delays• Defrost Time: Fixed at 10 min. +/- 20%• Interval Time Between defrosts: Pin selectable 30/45/90 min.• Power On Reset Time: 500 milliseconds• Test Time: Short across test terminals reduces test time

by 256X

Mechanical• Dimensions: 3” X 2.875”• Mounting: Surface mount using (4) #6 or #8 screws

Replaces• Ranco: E-15• Avion: DFT100

Note: Use only one input voltage at a time.

W

90 45 30

DEF SENSOR1N/O

3N/C

2COM110V 24 VAC

230VCOVER TOBE USEDFOR 24VUNITS

24/110/230 VAC

PRI

24 VAC SEC.

ThermostatProbe

110/230 COM 110 VAC 230 VAC



Solid State Reliability!Low Cost, high performance...The Series 316 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.

• Time and temperature terminate• 10 minute fixed defrost time• Pin-selectable: 50/70/90 minute defrost intervals• On-board test pins reduce test time by 256X• High power output (1/2 hp fan @ 230 VAC)• Strip heat, reversing valve outputs (24 VAC, 1 amp)•

R

recognized: E118867




Mode of operationThe ICM316 provides a selectable time intervalbetween defrost cycles. It will allow heat for theselected 50/70/90 minute period and provide a 10minute defrost.The ICM316 goes into defrost when 24 VAC is appliedbetween “R,” “Y,” “D” and the common terminal “B”as long as “D” is calling. The defrost run time is keptas a function of “Y” calling. If in defrost and “Y” stopscalling, “O” remains energized, but X2 will de-energize. EDR is energized with a direct call to “O”.Each ICM316 is shipped with detailed instructions.Consult factory for variations not listed.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

50 min. fixed

70 min. fixed

90 min. fixed



NumberICM316

ProductCode

DFORAE1008


TOLL FREE800-365-5525

FAX315-233-5276


OutputO, X2 ODF• Type: Relay • Type: Relay• Form: DPDT, Normally open • Form: SPDT, Normally closed• Rating: 1 amp @ 30 VAC • Rating: 10 amps @ 230 VAC

EDR• Type: Relay• Form: DPDT, Normally closed• N.O.: 1 amp @ 30 VAC

Replaces• Trane: CNT1642

CNT115221C142827601

Time Delays• Defrost Time:

Fixed at 10 min. +/- 5%• Interval Time Between defrosts: Pin selectable 50/70/90 min.• Power On Reset Time: 500 milliseconds• Test Time: Short across test terminals reduces test time

by 256X

Mechanical• Dimensions: 3” X 6”• Mounting: Surface mount using (5) #6 or #8 screws or plastic

standoffs

24VAC

R

Compressor

R

B

B

X2

O

O

D

T

Y

Aux

RVS

IndoorT’Stat

LPSHPS

Y

EDR

EvaporatorDefrost Relay

DefrostT’Stat

OutdoorFan

Com NC



Ultra low cost heat pump defrost timer.Direct replacement for GoodmanB1226008...The Series 318 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.

• Time and temperature terminate• 10 minute fixed defrost time• Pin-selectable: 30/60/90 minute defrost intervals• On-board test pins reduce test time by 256X• High power output (1/2 hp fan @ 240 VAC)• Strip heat, reversing valve outputs (24 VAC, 2 amps)•

R

recognized: E118867




Mode of operationThe ICM318 provides a selectable time intervalbetween defrost cycles. It will allow a 10 minutedefrost every 30/60/90 minutes as long as the DFTis closed on the DFT terminal. A warm coil causesthe DFT to open which will prevent time accumulationor end the defrost period. When the defrost periodends, the timer is reset.Each ICM318 is shipped with detailed instructions.Consult factory for variations not listed.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

60 min. fixed

90 min. fixed



NumberICM318

ProductCode

W1001-4


TOLL FREE800-365-5525

FAX315-233-5276


OutputO, X2 DF1, DF2• Type: Maximum relay • Type: Maximum relay• Form: DPST, Normally open • Form: SPST, Normally closed• Rating: 2 amps @ 30 VAC • Rating: 1/2 hp @ 240 VAC


by 256X

Mechanical• Dimensions: 3” X 2.875”• Mounting: Surface mount using (5) #6 or #8 screws or plastic

standoffs

Replaces• Goodman: B1226008• ICM: W1001-4




24VAC

Compressor DRRVS

DFT

DFT

R

R

W2

O

O

Y

C

HPS LPS

DF1 DF2

OutdoorFan

In-door

T’Stat



Ultra low cost heat pump defrost timer.Direct replacement for Nordyne 624519A...The Series 319 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.

• HOLD feature tracks compressor run times• Time and temperature terminate• 10 minute fixed defrost time• Pin-selectable: 30/60/90 minute defrost intervals• On-board test pins reduce test time by 256X• Recycle function melts frost on coils• Stable pin post construction•

R

recognized: E118867




Mode of operationThe ICM319 provides a selectable time intervalbetween defrost cycles. It will allow a 10 minutedefrost every 30/60/90 minutes as long as the DFTis closed on the DFT terminal A warm coil causesthe DFT to open which will prevent time accumulationor end the defrost period. When the defrost periodends, the timer is reset.Each ICM319 is shipped with detailed instructions.Consult factory for variations not listed.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

60 min. fixed

90 min. fixed



NumberICM319

ProductCode

DFORL AE1002


TOLL FREE800-365-5525

FAX315-233-5276


OutputO, X2 T1, T2• Type: Relay • Type: Relay• Form: DPST, Normally open • Form: SPDT, Normally closed• Rating: 1 amp @ 30 VAC • Rating: 10 amps @ 125 VAC

resistive DF1, DF2• Type: Relay• Form: SPDT, Normally closed• N.O.: 1/2 hp @ 240 VAC

Replaces• Nordyne: 624519A• ICM: DFORB24A21300


by 256X


standoffs

DR = Defrost Relay CoilDFT = Defrost Thermostat



24VA

Compressor DR

DFT

HPS LPS

In-door

T’Stat

RVS

DF1 DF2

OutdoorFan

DFT

T1

O

Y

C

T2

O

W2

R

R

E

Compressor



Low cost, high performance solid statedefrost control...The ICM320 is a high performance defrost controlwhich serves as a low cost replacement for CarriersHK32FA006. The ICM320 features stable pin postconstruction and conformal coating for greaterreliability in harsh environments. On-board testpins reduce test times by 256 times.

The ICM320 is easy to mount and features heavyduty relay output.




Mode of operationThe ICM320 provides a selectable time interval (30,50, 90 min.) between defrost cycles. Upon applicationof power, the timing sequence begins with the delayperiod first, and then the 10 minute defrost periodsecond.Defrost Terminate Input: When open, will terminatethe defrost period and reset all times.The “Y” terminal will temporarily shut off the defrostcycle to track compressor run times.The on-board test pins reduce test time by 256x.See chart above.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

50 min. fixed

90 min. fixed



NumberICM320

ProductCode

DFORAB1016


TOLL FREE800-365-5525

FAX315-233-5276

SpecificationsInput• Control Voltage: 24 VAC• Frequency: 50/60 Hz• Power Consumption: 1 watt maximum

OutputO, W2 OF1, OF2• Type: Maximum relay • Type: Maximum relay• Form: DPST, Normally open • Form: SPST, Normally closed• Rating: 2 amps @ 24 VAC • Rating: 10 amps @ 240 VAC


by 256X


standoffs

Replaces• Carrier: HK32FA006




24VAC

Compressor DRRVS

DFT

DFT

R

R

W2

O

O

Y

C

HPS LPS

DF1 DF2

OutdoorFan

In-door

T’Stat



Ultra low cost heat pump defrost timer,pin-for-pin campatible with OEM Type 621controls...The Series 321 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.• Time and temperature terminate• 10 minute fixed defrost time• Pin-selectable: 30/50/90 minute defrost intervals• On-board test pins reduce test time by 256X• Defrost terminate output• High power output (1/2 HP fan @ 240 VAC)• Strip heat, reversing valve outputs (24 VAC, 1 amp)• Integral short cycle protection •

R

recognized: E118867




Mode of operationThe ICM321 provides a selectable time intervalbetween defrost cycles. It will allow heat for theselected 30/60/90 minute period and provide a 10minute defrost.A warm coil causes the DFT to open which willprevent time accumulation or end the defrost period.When the defrost period ends, either by opening theDFT or after the 10 minute defrost period has elapsed,the timer is reset.Each ICM321 is shipped with detailed instructions.Consult factory for variations not listed.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

60 min. fixed

90 min. fixed



NumberICM321

ProductCode

DFORB AE1011


TOLL FREE800-365-5525

FAX315-233-5276


OutputO, W2 T2• Type: Relay • Type: Relay• Form: DPST, Normally open • Rating: 1 amp @ 30 VAC• Rating: 1 amp @ 30 VAC

OF1, OF2• Type: Relay• Form: SPDT, Normally closed• N.O.: 1/2hp @ 240 VAC

Replaces• Carrier: CES01130063-00• Carrier: CES110063-01

Time Delays• Defrost Time: Fixed at 10 min. +/- 5%• Interval Time Between defrosts: Pin selectable 30/50/90 min.• Power On Reset Time: 5 minutes• Test Time: Short across test terminals reduces test time

by 256X

Mechanical• Dimensions: 4.5” X 5.5”• Mounting: Surface mount using (5) #6 or #8 screws or plastic

standoffs

DFT

R

O

Y

C

T2

T1

305090




24VA

Compressor

DFT

HPS LPS

In-door

T’Stat

RVS

OF1 OF2

OutdoorFan

W2

DR



Ultra low cost heat pump defrost timer,pin-for-pin campatible with CarrierCES01130063-00...The Series 322 integrates multiple time andtemperature defrost functions onto a low cost,conformally coated, open board package.

• Time and temperature terminate• 10 minute fixed defrost time• Pin-selectable: 30/50/90 minute defrost intervals• On-board test pins reduce test time by 256X• Defrost terminate output• High power output (1/2 HP fan @ 240 VAC)• Strip heat, reversing valve outputs (24 VAC, 1 amp)




Mode of operationThe ICM322 provides a selectable time intervalbetween defrost cycles. It will allow heat for theselected 30/60/90 minute period and provide a 10minute defrost.A warm coil causes the DFT to open which willprevent time accumulation or end the defrost period.When the defrost period ends, either by opening theDFT or after the 10 minute defrost period has elapsed,the timer is reset.Each ICM322 is shipped with detailed instructions.Consult factory for variations not listed.

Ladder Diagram


EquivalentTest Time

2.34 sec.

2.34 sec.

2.34 sec.

Actual DefrostTime

10 min. fixed

10 min. fixed

10 min. fixed

EquivalentTest Time

7.03 sec.

14.06 sec.

21.09 sec.

Actual DefrostTime

30 min. fixed

60 min. fixed

90 min. fixed



NumberICM322

ProductCode

DFORB AE1011


TOLL FREE800-365-5525

FAX315-233-5276


OutputO, W2 OF1, OF2• Type: Relay • Type: Relay• Form: DPST, Normally open • Form: SPDT, Normally closed• Rating: 1 amp @ 30 VAC • Rating: 1/2 hp @ 240 VAC


by 256X

Mechanical• Dimensions: 4.5” X 5.5”• Mounting: Surface mount using (5) #6 or #8 screws or plastic

standoffs

Replaces• Carrier: CES0130024-00

322 DFT

R

O

Y

C

T2

T1

305090




24VA

Compressor

DFT

HPS LPS

In-door

T’Stat

RVS

OF1 OF2

OutdoorFan

W2

DR

Defrost Catalog by ICM

Documents

specificationsinput

timing sequence

reversing

prevent time

product codedforb

open board

sen jmp terminal

ladder diagramindoor