ICM333
Head Pressure Control with
Optional Heat Pump Override
Regulates head pressure via
temperature or pressure input
Installation, Operation & Application Guide
For more information on our complete range of American-made
products – plus wiring diagrams, troubleshooting tips and more,
visit us at
www.icmcontrols.com
Caution!
Installation of the ICM333 shall be performed by trained technicians only. Adhere to all local and national electric codes. Disconnect all power to the system before making any connections.
•
Line voltage:
120, 208, 240, 277, 480 and 600 VAC
•
Control voltage:
18-30 VAC
•
Frequency:
50-60 Hz
•
Operating temperature:
-40ºF to +176ºF (-40°C to +75°C)
•
Probes:
– Temperature: Thermistor, 10K ohm at 77°F (25°C)
– Pressure: ICM380 (ordered separately)
•
Heat pump override:
24 VAC N.C. or N.O.
•
Weight:
12 ounces (341 grams)
Specifications
Note:
The
ICM333
should be applied to motors and equipment that have been designated by their
respective manufacturers as capable of being speed controlled.
• Mounting:
– Surface mount using (2) #8 screws
– The
ICM333
should be surface mounted to a clean metal or other thermally conductive surface
for maximum heat dissipation
– It is recommended that the
ICM333
be mounted away from the condenser exhaust air in order to
maintain lower operating temperatures
LIAF010-1
7313 William Barry Blvd., North Syracuse, NY 13212
(
Toll Free) 800-365-5525 (Phone) 315-233-5266 (Fax) 315-233-5276
www.icmcontrols.com
ONE-YEAR LIMITED WARRANTY
The Seller warrants its products against defects in material or workmanship for a period of one (1)
year from the date of manufacture. The liability of the Seller is limited, at its option, to repair, replace
or issue a non-case credit for the purchase prices of the goods which are provided to be defective.
The warranty and remedies set forth herein do not apply to any goods or parts thereof which have
been subjected to misuse including any use or application in violation of the Seller’s instructions,
neglect, tampering, improper storage, incorrect installation or servicing not performed by the Seller.
In order to permit the Seller to properly administer the warranty, the Buyer shall: 1) Notify the Seller
promptly of any claim, submitting date code information or any other pertinent data as requested by
the Seller. 2) Permit the Seller to inspect and test the product claimed to be defective. Items claimed
to be defective and are determined by Seller to be non-defective are subject to a $30.00 per hour
inspection fee. This warranty constitutes the Seller’s sole liability hereunder and is in lieu of any other
warranty expressed, implied or statutory. Unless otherwise stated in writing, Seller makes no warranty
that the goods depicted or described herein are fit for any particular purpose.
Example
1. Only one probe type can be used at a time, temperature or pressure. Up to two
probes of a kind can be used in which case the control will respond to the probe
that senses the highest temperature or pressure.
2. A typical installation is shown in Appendix. The temperature probe can be
attached to the U-bend. Use the provided thermo-tape to secure the probe to the
place of attachment.
3. When using a pressure probe, install it on the discharge line transducer fitting.
4. Temperature and Pressure probes are connected to ICM333 as shown in
respective wiring diagrams below.
Installing and Connecting the Probe
BLUE
WHITE GREEN
RED
BLACK
PRESSURE TRANSDUCER
2
BLUE
WHITE GREEN
RED
BLACK
PRESSURE TRANSDUCER
1
TEMPERATURE
PROBE 1
TEMPERATURE
PROBE 2
Connections for ICM333 at 120/208/240/277 VAC
1. Remove power from system.
2. Field install a wire from
Line 1
wire to
Line 1
terminal.
3. Cut
Line 2
wire; affix motor side to
Motor 2
terminal
and line side to
Line 2
terminal.
4. Make 24 VAC and temperature probe connections.
5. Verify wiring is correct.
6. Power up system and check operation.
Typical
condenser fan
PSC
Fan
Motor
Run
Capacitor
120/208/240/277
VAC
PSC
Fan
Motor
Run
Capacitor
Field
Installed
Wire
Line
1
120/277
VAC
Line
2
Motor
2
120/208/240/277
VAC
Connections for Heat Pump System at 120/208/240/277 VAC
1. Remove power from system.
2. Field install a wire from
Line 1
wire to
Line 1
terminal.
3. Cut
Line 2
wire; affix the common from the defrost
board’s fan relay to the
Motor 2
terminal and the Line
from the contactor to the
Line 2
terminal.
4. Make 24 VAC, probe and HP connections.
5. Verify wiring is correct.
6. Power up system and check operation.
Field
Installed
Wire
PSC
Fan
Motor
Run
Capacitor
Fan
Relay
COM
NC
Defrost Board
120/208/240/277
VAC
Line
1
120/240/277
VAC
Line
2
Motor
2
Connections for Heat Pump System at 480/600 VAC
1. Remove power from system.
2. Field install a wire from
Line 1
wire to
Line 1
terminal.
3. Cut
Line 2
wire; affix the common from the defrost
board’s fan relay to the
Motor 2
terminal and the Line
from the contactor to the
Line 2
terminal.
4. Make 24 VAC, probe and HP connections.
5. Verify wiring is correct.
6. Power up system and check operation.
Connections for ICM333 at 480/600 VAC
1. Remove power from system.
2. Field install a wire from
Line 1
wire to
Line 1
terminal.
3. Cut
Line 2
wire; affix motor side to
Motor 2
terminal
and line side to
Line 2
terminal.
4. Make 24 VAC and temperature probe connections.
5. Verify wiring is correct.
6. Power up system and check operation.
Typical
condenser fan
PSC
Fan
Motor
Run
Capacitor
Line
1
Line
2
Motor
2
Field
Installed
Wire
PSC
Fan
Motor
Run
Capacitor
Line
1
Line
2
Motor
2
Field
Installed
Wire
PSC
Fan
Motor
Run
Capacitor
Fan
Relay
COM
NC
Defrost Board
