Setting the Temperature Differential
The default temperature differential is 1°. When your room temperature varies by 1°F, the thermostat
turns on your system. If you notice your system turning on and off too frequently, increase the
temperature differential.
1. Reset the thermostat by removing batteries for 10 seconds and then reinstall them.
2. For the first 10 seconds of operation, the temperature differential is displayed.
3. Press the
down
or
up
button to select desired setting.
Starting the Thermostat
1. Move the
Off/Heat
switch into the
Heat
position.
A Quick Test
Do not short jumper across terminals on the gas valve or at the system control to test installation.
Action:
Set the
Off/Heat
switch to
Heat
; press the
up
button until the set temperature is 3°F above
the room temperature.
Result:
The heating system should turn on; there may be a time delay depending on your
system.
Action:
Press the
down
button until the set temperature is below the room temperature.
Result:
The heating system should turn off.
If the above
test was successful
, you have a proper installation.
If the above
test was unsuccessful
, double check that the wires are securely connected and are
connected to the proper terminals. Consult the troubleshooting section below.
Troubleshooting
Symptom
Remedy
The system is not turning on
Check batteries; display is blank when batteries are not
present or are dead.
LCD is blank, or displaying
LO BAT
Replace batteries, or make sure the existing ones are
properly installed.
Thermostat turns on and off too
frequently
Adjust temperature differential
(see “Setting the Temperature Differential”).
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.
LIAF005-1
Patent No. 424,953
7313 William Barry Blvd., North Syracuse, NY 13212
(
Toll Free
) 800-365-5525 (
Phone
) 315-233-5266 (
Fax
) 315-233-5276
www.icmcontrols.com
Setting the Setpoint Temperature
1. Place
Off/Heat
switch in the
Heat
position.
2. Press the
down
or
up
button a single time to see the
current temperature
setting.
3. Press the
down
or
up
button until the
desired temperature
setpoint displays.
4. The new temperature setpoint is automatically saved in memory. After 5 seconds, the display
returns to showing the current room temperature.
1. Remove cover from remote sensor housing.
2. Select an appropriate location for mounting the remote sensor.
3. Mount remote sensor unit using hardware provided.
4. Install two conductor shielded wires between remote sensor and thermostat. Shielded wire must be
used. Do not run remote sensor wire in conduit with other wires.
•
Wire 1
should run between the S1 terminal on the thermostat and the S1 terminal on the remote sensor
•
Wire 2
should run between the S2 terminal on the thermostat and the S2 terminal on the remote sensor
• Connect the shielding of the wire to the S2 terminal on the thermostat
5. Disable the main sensor on the thermostat by cutting it from the circuit board.
Remote Sensor Installation (Optional)
S1
G
W
S2
R
SC1600L/VL Wiring Diagrams
2-Wire, Single Transformer or Millivolt
Heating Only
Zone Valve/Damper Motor System
3-Wire, Zone Valve/Damper Motor System
2-Wire, Zone Valve/Damper Motor System
Use
appropriate
size, single
pole/double
throw relay
24
VAC
24
VAC
Note:
Differential temperature may need to be increased for zone/
damper systems.
Installing and Changing Batteries
If your LCD is blank or displaying
LO BAT
, the batteries are not installed or need to be changed. We
suggest you change the batteries at least once a year, or whenever the
LO BAT
warning displays.
Note:
After installing new batteries, you have to reset the room temperature setting and the
differential setting.
1. Move the
Off/Heat
switch into the
Off
position.
2. Remove the cover, and install the two “AA” alkaline batteries. Proper battery installation is
important! Make sure the positive ends of the batteries match the positive terminals in the battery
compartment.
If the display is on, the batteries are installed properly.
