ICM Controls SC1600L General instructions

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Table of Contents
CAUTION! : This thermostat should be installed by trained technicians only. Adhere to all local
and national codes. Disconnect all power to the system before installing, removing, or
cleaning.
Parts Diagrams
SC1600L/VL
To Remove Existing Thermostat
ELECTRICAL SHOCK HAZARD – Turn off power at the main service panel by removing
the fuse or switching the appropriate circuit breaker to the OFF position before
removing the existing thermostat.
1. Turn off power to the heating system by removing the fuse or switching the appropriate circuit
breaker off.
2. Remove cover of old thermostat. This should expose the wires.
3. Label the existing wires with the enclosed wire labels before removing wires.
4. After labeling wires, remove wires from wire terminals.
5. Remove existing thermostat base from wall.
6. Refer to the following section for instructions on how to install this thermostat.
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 t for any particular
purpose.
LIAF005
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
Manual Changeover
Non-Programmable
Hardwired
SC1600L/VL
Non-Programmable Electronic Thermostat
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
• ControlsSingleStageHeatingSystems
• MillivoltandHydronic(waterorsteam)SystemCompatible
• CompatiblewithGasandOilSystems
• BacklitDisplay
• Mercury-Free,
Environmentally Safe
Battery
Compartment
Mode
Switch
Freeze
Switch
High Temp.
Switch
Parts Diagram.........................................................................................................................................2
Specications .........................................................................................................................................3
Important Safety Information ..................................................................................................................3
Package Contents/Tools Required .........................................................................................................3
General Description................................................................................................................................4
To Remove Existing Thermostat.............................................................................................................4
Replacing Wiring Labels.........................................................................................................................5
To Install Thermostat ..............................................................................................................................5
Installing and Changing Batteries...........................................................................................................6
Remote Sensor Installation (Optional)....................................................................................................7
Wiring Diagrams.....................................................................................................................................8
Heating Only........................................................................................................................................8
Zone Valve/Damper Motor System......................................................................................................8
Setting the Setpoint Temperature...........................................................................................................9
Setting the Temperature Differential.......................................................................................................9
Starting the Thermostat ..........................................................................................................................9
A Quick Test..........................................................................................................................................10
Troubleshooting....................................................................................................................................10
Specifications
Electricalrating: • Millivolt to 30 VAC/VDC
• DC Power: 3.0 VDC (2 “AA” alkaline batteries included)
• 1 amp maximum per terminal
• 2 amp maximum total load
Temperaturecontrolrange:45°F to 90°F Accuracy: ± 1°F
BackLight: Not available on N and VN models
DifferentialRage: 1°F to 3°F
Systemcongurations: 1-stage heat, gas, and oil
Terminations: R, W, S1, S2
Important Safety Information
WARNING! : Alwaysturnoffpoweratthemainpowersupplybeforeinstalling,cleaning,
orremovingthermostat.
• This thermostat is for 24 VAC applications only; do not use on voltages over 30 VAC
• Do not short across terminals of gas valve or system control to test operation; this will damage your
thermostat and void your warranty
• All wiring must conform to local and national electrical and building codes
• Use this thermostat only as described in this manual
Package Contents/Tools Required
Packageincludes: SimpleComfort®1600 thermostat on base, thermostat cover, wiring labels, screws
and wall anchors, Installation, Operation and Application Guide.
Toolsrequiredforinstallation: Drill with 3/16” bit, hammer, screwdriver.
General Description
The SimpleComfort®1600 thermostat is a digital, mercury-free, non-programmable, electronic
thermostat.
• Compatible with single-stage heating systems
• Compatible as a master thermostat in zoned system applications
• FreezeProtectionFeature: Protects pipes from freezing! If the room temperature drops to 40°F,
the thermostat automatically turns on the heat; the thermostat must
be in the Heat position; works even if the batteries are dead
• SystemCustomization: Choose three available temperature differential settings

5 6
9 10
7 8
Replacing Wiring Labels
A Quick Test
SC1600L/VL Wiring Diagrams
Heating Only
2-Wire,
SingleTransformer
orMillivolt
Zone Valve/Damper Motor System
3-Wire,ZoneValve/DamperMotorSystem
2-Wire,ZoneValve/DamperMotorSystem
 Note: Differential temperature may need to be increased for
zone/damper systems (see Page 9).
ELECTRICAL SHOCK HAZARD –Turnoffpoweratthemainservicepanelbyremoving
thefuseorswitchingtheappropriatecircuitbreakertotheOFFpositionbefore
removingtheexistingthermostat.
IMPORTANT: Thermostat installation must conform to local and national building and electrical
codes and ordinances.
Note: Mount the thermostat about ve feet above the oor. Do not mount the thermostat on
an outside wall, in direct sunlight, behind a door, or in an area affected by a vent or
duct.
1. Turn off power to the heating system by removing the fuse or switching off the appropriate circuit
breaker.
2. Move the Off/Heat switch into the Off position.
3. To remove cover, insert and twist a coin or screwdriver in the slots on the sides of the thermostat.
4. Put thermostat base against the wall where you plan to mount it (Be sure wires will feed through
the wire opening in the base of the thermostat).
5. Mark the placement of the mounting holes.
6. Set thermostat base and cover away from working area.
7. Using a 3/16” drill bit, drill holes in the places you have marked for mounting.
8. Use a hammer to tap supplied anchors in mounting holes.
9. Align thermostat base with mounting holes and feed the control wires through wire opening.
Old New Type
H, W, 4 W Heating control
M, 4, RH, RS, R R Transformer, hot side
N/A S1, S2 Optional remote sensor
Replace the old labels with the enclosed new
labels.
To Install Thermostat
To Install Thermostat (continued)
10. Use supplied screws to mount thermostat base to wall.
11. Insert stripped, labeled wires in matching wire terminals. See “Wiring Diagrams” section of this
manual (Page 8).
CAUTION! : Be sure exposed portion of wires does not touch other wires.
12. Tighten screws on terminal block. Gently tug wire to be sure of proper connection. Double check
that each wire is connected to the proper terminal.
13. Insert two fresh “AA” alkaline batteries into thermostat, oriented in the direction shown on the
battery compartment.
14. Replace cover on thermostat by snapping it in place.
15. Turn on power to the system at the main service panel.
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.
Starting the Thermostat
1. Move the Off/Heat switch into the Heat position.
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 rst 10 seconds of operation, the temperature differential is displayed.
3. Press the or button to select desired setting.
Setting the Setpoint Temperature
1. Place Off/Heat switch in the Heat position.
2. Press the or button a single time to see the currenttemperature setting.
3. Press the or 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.
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 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 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”.
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.
S1 S2 W G R
Cut Thermistor from
circuit board
Use
appropriate
size, single
pole/double
throw relay
24
VAC
24
VAC
Remote Sensor Installation (Optional)