ICM Controls SC 2311 Instructions générales
2 Heat/1 Cool
Manual Changeover
Hardwired
SC 2311
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
• Configurable
• 2-Stage Heat/1-Stage Cool Systems
• Heat Pump Systems
• Backlit Display
• Field Temperature Calibration
• Filter Check
• Status Indicator Light
• Relay Outputs
(minimum voltage drop in thermostat)
• Ideally Suited for:
– Residential (New Construction/Replacement)
– Light Commercial
Table of Contents
Parts Diagram .............................................................................................................................1
Specifications .............................................................................................................................. 2
Important Safety Information .....................................................................................................2
Package Contents/Tools Required...............................................................................................2
To Remove Existing Thermostat ................................................................................................3
To Install Thermostat ..................................................................................................................3
Terminal Designator Descriptions................................................................................................5
SC2311 Output Chart..................................................................................................................5
Wiring Diagrams..........................................................................................................................6
Wiring Diagram Conversions .......................................................................................................9
Configuration Mode...................................................................................................................19
Testing the Thermostat ............................................................................................................22
Mode of Operation ....................................................................................................................23
Operating Modes ......................................................................................................................24
Troubleshooting ........................................................................................................................25
1
Parts Diagram
R12
W1
O/B
Y W2 E
2
Specications
Electrical rating: • 24 VAC (18-30 VAC)
• 1 amp maximum per terminal
• 4 amp maximum total load
Temperature control range: 45°F to 90°F (7°C to 32°C) Accuracy: ± 1°F (± 0.5°C)
System configurations: 2-stage heat, 1-stage cool, heat pump, gas, oil, electric
Timing:
Anti-short Cycle:
5 minutes
Backlight Operation:
13 seconds after mode change or button press
Terminations: R, C, W1/O/B, Y, W2, E, G
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
• Do not use air conditioning when the outdoor temperature is below 50 degrees; this can damage your
A/C system and cause personal injuries
• Use this thermostat only as described in this manual
Package includes: SimpleComfort®2311 programmable thermostat on base, labeled thermostat cover,
wiring labels, screws and wall anchors, Owner’s Manual, Installation, Operation and
Application Guide.
Tools required for installation: Drill with 3/16” bit, hammer, screwdriver.
Package Contents/Tools Required
3
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 and cooling system by removing the fuse or switching off the appropriate
circuit breaker.
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.
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.
IMPORTANT: Thermostat installation must conform to local and national building and electrical
codes and ordinances.
Note: Mount the thermostat about five feet above the floor. 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 and cooling system by removing the fuse or switching off the appropriate
circuit breaker.
To Install Thermostat
4
To Install Thermostat (continued)
2. To remove cover, insert and twist a coin or screwdriver in the slots on the sides of the thermostat.
3. 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).
4. Mark the placement of the mounting holes.
5. Set thermostat base and cover away from working area.
6. Using a 3/16” drill bit, drill holes in the places you have marked for mounting.
7. Use a hammer to tap supplied anchors in mounting holes.
8. Align thermostat base with mounting holes and feed the control wires through wire opening.
9. Use supplied screws to mount thermostat base to wall.
10. Insert stripped, labeled wires in matching wire terminals. See “Wiring Diagrams” section of this
manual (Pages 6-18).
CAUTION!
:
Be sure exposed portion of wires does not touch other wires.
11. 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.
12. Seal hole for wires behind thermostat with non-flammable insulation or putty, or use an ICM insulated
wall plate (ACC-WP01).
13. Replace cover on thermostat by snapping it in place.
14. Turn on power to the system at the main service panel.
15. Test thermostat operation as described in “Testing the Thermostat” (Page 22).
5
R – 24 VAC hot
C – 24 VAC common
W1/O/B – Configurable
W1 – 1st stage heat for non-hp systems
O – cool active reversing valve
B – heat active reversing valve
Y – 1st stage cool, 1st stage heat for heat pumps
W2 – 2nd stage heat for heat pump, non-heat pump, and emergency heat
E – 1st stage heat for Emergency Heat operation
G – Fan
Terminal Designator Descriptions
The SC2311 thermostat is configurable for different systems. The configuration directly effects the outputs.
Use the output chart to correctly configure and wire the thermostat to your system.
1ST Cool 1ST Heat 2ND Heat
Heat/Cool Y,G W1, G* W1, W2, G*
Heat Pump (One Compressor) Y,G,O Y, G, B Y, W2, G, B
Emergency Heat HP N/A E, G E, W2, G
* G not energized when configured as a gas/oil system
SC2311 Output Chart
6
First
Cooling Control
Second
Heating Control
First
Cooling Control
First
Heating Control
Wiring Diagrams
Fan
Control
Fan
Control
7
Second
Heating Control
First
Heating Control
Second
Heating Control
First
Heating Control
Single Transformer Single Transformer
Fan
Control
8
Single Compressor
2nd Stage
Heat
Reversing
Valve
Compressor
Emergency
Heat
Fan
Control
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