ICM Controls SC2201 General instructions

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
SC2201
Non-Programmable Electronic Thermostats
• For use with Heat Pumps
• Up to 2-Stage Heat, 1-Stage
Cool
• 30-Minute Power Loss Memory
Retention
• For use with 24 VAC Systems
• Optional backlit display
(SC2201L only)

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 Diagram ........................................................1
Specifications .........................................................2
Features/Benefits...................................................2
Package Contents/Tools Required..........................2
Important Safety Information ................................3
General Description................................................3
To Remove Existing Thermostat ...........................4
Replacing Wiring Labels .........................................4
To Install Thermostat .............................................5
Testing the Thermostat .........................................6
LED Indicators........................................................8
Operation ...............................................................8
Wiring Diagrams...................................................10
Carrier Split Stream Condensers ......................... 10
Coleman 3000 Series.......................................... 11
Comfortmaker CYC Series .................................. 12
Heil-Quaker 867.814 Series and PH50 Series ..... 13
Payne Reliant and Endura Model ........................ 14
Rheem/Ruud:
-PGB, -PFA, -PCB, -PLA, and -PKA Series ....... 15
Goodman, Janitrol, Trane/American Standard .... 16
York -E1CS, -E1FB, E1FH ................................... 17
Lennox CB19...................................................... 18
Lennox HP19 and HP20 ..................................... 19
FHP 1 Stage...........................................................20
Troubleshooting ...................................................21

1
Parts Diagram
SC2201
Fan SwitchMode Switch
Reset Switch
R B O W2 G E Y1C

2
Specications
Input:
• Voltage: 24 VAC (18-30 VAC)
Output:
• Maximum: 1 amp maximum load per terminal
(4 amp total maximum load for all terminals)
• Temperature Ranges:
– Temperature control range: 45°F to 90°F Accuracy: ± 1°F
– Differential range: 1°F to 3°F
• System configurations: Multi-stage heat pump (two-stage heat, one-stage cool)
• Terminations: R, C, E, Y1, O, B, G, W2
• Second stage activation in heat mode: 2° below first stage (not adjustable)
SET
ROOM
DIFF
Temperature
differential setting
Room temperature
Room temperature
setpoint
Package Contents/Tools Required
Package includes: SimpleComfort®2201 non-programmable 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.
Features/Benets
• Multi-stage heating/cooling control
• Multi-colored LED indicators for system status
• Zone system compatible as a master thermostat
• Adjustable temperature differential: 1°F to 3°F
• Automatic heating system shutdown if
temperature exceeds 90°F
• 30-minute power interruption memory retention
• Independent setpoints for heat and cool

3
Important Safety Information
General Description
The SimpleComfort®2201 is intended to operate and is compatible with 24 VAC residential heat pumps
with up to 2-stage heat/1-stage cool. It will operate with heat pump systems that are manual changeover
and have auxiliary or emergency heating. There are no optional items required for standard installations.
This thermostat is also compatible as a master thermostat in zoned system applications.
• Always turn off power at the main power source by unscrewing fuse or switching circuit breaker to the
off position before installing, removing, cleaning, or servicing this thermostat
• Read all of the information in this manual before installing this thermostat
• This thermostat should be installed only by a professional contractor
• This is a 24 VAC low-voltage thermostat; do not install on voltages higher than 30 VAC
• All wiring must conform to local and national building and electrical codes and ordinances
• Do not switch system to cool if the outdoor temperature is below 50°F; this can damage the air
conditioning system and may cause personal injury
• The thermostat will not control your heating/air conditioning system without power; it requires a
continuous 24 VAC circuit for proper system control
• Use this thermostat only as described in this manual
• While cleaning, do not get soap directly on thermostat switches or LCD readout; only use a
damp cloth with a mild soap to wipe outside of thermostat cover

4
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. See table below for old
and new label identification.
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.
Replace the old labels with the enclosed new labels:
Old New Type
R, V-VR or VR-R R 24 VAC, return
Y, Y1 or M Y1 Stage 1 cooling/heating circuit
O or R O Reversing valve (cooling active)
B B Reversing valve (heat active)
G or F G Fan contactor circuit
W1, W2 or W-U W2 2nd stage heating circuit
E E Emergency heating circuit
C, X or B C 24 VAC, transformer common side
Replacing Wiring Labels
To Remove Existing Thermostat

5
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.
IMPORTANT: This thermostat is compatible with 100% lockout systems. To reset the system, turn
thermostat to Off position for at least 60 seconds.
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.
2. Put Mode switch in Off position.
3. Put Fan switch in Auto position.
4. To remove cover, insert and twist a coin or screwdriver
in the slot on the top of the thermostat.
5. 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).
6. Mark the placement of the mounting holes.
7. Set thermostat base and cover away from working area.
8. Using a 3/16” drill bit, drill holes in the places you have marked for mounting.
9. Use a hammer to tap supplied anchors in mounting holes.
10. Align thermostat base with mounting holes and feed the control wires through wire opening.
11. Use supplied screws to mount thermostat base to wall.
12. Insert stripped, labeled wires in matching wire terminals. See Wiring Diagrams section of this manual
(Pages 10-20).
CAUTION! : Be sure exposed portion of wires does not touch other wires.
Cool Off Heat Emer Auto On
Mode Fan
To Install Thermostat

6
13. 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.
14. Replace cover on thermostat by snapping it in place.
15. Turn on power to the system at the main service panel.
16. Test thermostat operation as described in the following section.
CAUTION! : Do not switch system to cool if the outdoor temperature is below 50°F. This can
damage the air conditioning system and may cause personal injury.
1. Put the Mode switch to Cool position.
2. Press the button until the temperature setting is at least 3 degrees below
the room temperature. The air conditioning system and fan should turn on. Cool Off Heat Emer
Mode
Testing the Thermostat
Cool Off Heat Emer
Mode
3. Put the Mode switch in the Off position. The air conditioning system should
turn off. The fan may have a delay.
Note: Pressing the Reset button once will bypass the 5-minute anti-short
cycle compressor protection.

7
Note: While in Cool or Heat mode, once the thermostat turns the system off, a built-in delay keeps
the compressor from turning on for about 5 minutes. This protects the compressor.
4. Put the Mode switch to the Heat position.
5. Press the button until the temperature setting is at least 3 degrees above
room temperature. The heating system should turn on.
Note: The compressor may not turn on again for 5 minutes.
6. Put the Mode switch to the Off position. The heating system should turn off.
Once again the fan may have a delay.
7. Put the Fan switch to the On position. The blower fan should turn on.
8. Put the Fan switch to the Auto position. The blower fan should turn off.
If all functions operate properly, the thermostat is installed correctly.
If the thermostat does not operate properly:
• Check all wiring connections
• See Troubleshooting (Page 21)
Cool Off Heat Emer
Auto On
Auto On
Cool Off Heat Emer
Mode
Mode
Fan
Fan

8
There are two LED indicators located on the front of the thermostat. They are designed to inform you of
the following:
AUX (GREEN): This turns on when the auxiliary (back-up)
heating is in operation. This is the second (non-
economy) stage of heat. It turns on 2 degrees
below first stage and is not adjustable.
EMER (RED): This light turns on whenever the emergency
heat is manually selected (system switch is in
the EMER position). While in the emergency
heat mode, the heat pump compressor is off,
and the emergency heat (same as the auxiliary
heat) maintains the setpoint temperature.
Setting the Room Temperature (Setpoint Temperature)
Step 1: Press the or button; the current temperature setpoint displays.
Step 2: Press the or button until the desired temperature setpoint displays.
Note: Holding down either the or button will scroll the
temperature display.
The new temperature setting is automatically saved. After 5 seconds, the display
returns to showing the current room temperature.
Operation
LED Indicators

9
Setting a New Temperature Differential
IMPORTANT: The default temperature differential is factory set at 1°F. When your room temperature
varies by 1°F, the thermostat turns your system on. If you notice your system turning on and
off too frequently, increase the temperature differential accordingly.
Step 1: Remove cover. Insert a coin or screwdriver in slot at top if needed.
Step 1: Press the reset button once (see diagram on Page 1).
Step 3: The display will show
This is the temperature differential setting.
Step 4: Press the or button to adjust the temperature differential down or up.
Step 5: Replace the thermostat cover.
The display will return to the room temperature display five
seconds after the last input. The new temperature differential
setting will be saved.
Differential Setting °F
1 1°F
2 2°F
3 3°F
Cool Off Heat Emer
Mode
Auto On
Fan
Starting the Thermostat
Step 1: Move the Fan switch into the Auto position.
• In Auto, indoor fan runs only during a heating or cooling cycle
• In ON, indoor fan runs continuously
Step 2: Move the Mode switch to either Cool or Heat position, depending on
the season. The thermostat will now operate and maintain the room
temperature at the desired setpoint.
Note: When the thermostat operates the system, there is built-in
compressor protection. After the compressor turns off, the
system will not turn it back on for about five minutes. This
protects the compressor.

10
SimpleComfort®2201 Electronic Thermostat Conversion to:
Carrier Split Stream Condensers and Heat Pump Systems
SimpleComfort® 2201
CW2EGBOY1R
Carrier Split Stream
Low Voltage Terminal Board
R
Y
O
G
E
W2
L
C
W3
24 VAC, Return
Compressor Contactor
Reversing Valve (Cooling Mode)
Fan Contactor Circuit
Emergency Heating Circuit
2nd Stage Heating Circuit
24 VAC, Common
Wiring Diagrams

11
SimpleComfort®2201 Electronic Thermostat Conversion to:
Coleman 3000 Series Heat Pump Systems
SimpleComfort® 2201
CW2EGBOY1R
Coleman 3000
Low Voltage Terminal Board
R
Y
B
G
E
W2
L
X
O
24 VAC, Return
Compressor Contactor
Reversing Valve (Heating Mode)
Fan Contactor Circuit
Emergency Heating Circuit
2nd Stage Heating Circuit
24 VAC, Common

12
SimpleComfort®2201 Electronic Thermostat Conversion to:
Comfortmaker CYC Series Heat Pump Systems
SimpleComfort® 2201
CW2EGBOY1R
Comfortmaker CYC
Low Voltage Terminal Board
R
Y
O
G
W1
W2
X
C
24 VAC, Return
Compressor Contactor
Reversing Valve (Cooling Mode)
Fan Contactor Circuit
2nd Stage Heating Circuit
Outdoor Thermostat
Defrost Sensor
24 VAC, Common
Note 1: E and W2 terminals jumpered at thermostat.
Note 2: W2 terminal on Comfortmaker capped at PCB.
Note 2: X terminal on Comfortmaker capped at PCB.
(capped)
(capped)

13
SimpleComfort®2201 Electronic Thermostat Conversion to:
Heil-Quaker 867.814 Series and PH50 Series Heat Pump Systems
SimpleComfort® 2201
CW2EGBOY1R
Heil-Quaker 867.814 Series and PH50
Low Voltage Terminal Board
R
Y
O
G
W1
W2
C
24 VAC, Return
Compressor Contactor
Reversing Valve (Cooling Mode)
Fan Contactor Circuit
2nd Stage Heating Circuit (Sequencer 1)
3rd Stage Heating Circuit (Sequencer 2)
24 VAC, Common
Note 1: E and W2 terminals jumpered at thermostat.
Note 2: W2 terminal on Heil-Quaker capped at PCB.
(capped)

14
SimpleComfort®2201 Electronic Thermostat Conversion to:
Payne Reliant and Endura Model Heat Pump Systems
SimpleComfort® 2201
CW2EGBOY1R
Payne Reliant and Endura Model
Low Voltage Terminal Board
R
Y
O
G
E
W2
L
C
W3
24 VAC, Return
Compressor Contactor
Reversing Valve (Cooling Mode)
Fan Contactor Circuit
Emergency Heating Circuit
2nd Stage Heating Circuit
24 VAC, Common
3rd Stage Heating Circuit
Note 1: W3 terminal on Payne PCB capped at PCB.
(capped)

15
SimpleComfort®2201 Electronic Thermostat Conversion to:
Rheem/Ruud: -PGB, -PFA, -PCB, -PLA, and -PKA Series Heat Pump Systems
SimpleComfort® 2201
C
W2EGBOY1R
Rheem/Ruud: -PGB, -PFA, -PCB, -PLA, and -PKA
Low Voltage Terminal Board
R
Y
B
G
W2
L
X
O
24 VAC, Return
Compressor Contactor
Reversing Valve (Heating Mode)
Fan Contactor Circuit
2nd Stage Heating Circuit
24 VAC, Common
Note 1: E and W2 terminals jumpered at thermostat.

16
SimpleComfort®2201 Electronic Thermostat Conversion to:
Goodman, Janitrol, Trane/American Standard Heat Pump Systems
SimpleComfort® 2201
CW2EGBOY1R
Goodman, Janitrol, Trane/American Standard
Low Voltage Terminal Board
R
Y
O
G
X2
W-U
B
T
24 VAC, Return
Compressor Contactor
Reversing Valve (Cooling Mode)
Fan Contactor Circuit
2nd Stage Heating Circuit
24 VAC, Common
Note 1: E and W2 terminals jumpered at thermostat.
Note 2: X2 terminal on Goodman, etc. capped at PCB.
Note 2: T terminal on Goodman, etc. capped at PCB.
(capped)
(capped)

17
SimpleComfort®2201 Electronic Thermostat Conversion to:
York -E1CS, -E1FB, E1FH Heat Pump Systems
SimpleComfort® 2201
CW2EGBOY1R
York -E1CS, -E1FB, E1FH
Low Voltage Terminal Board
R
Y
O
G
W
X
B
24 VAC, Return
Compressor Contactor
Reversing Valve (Cooling Mode)
Fan Contactor Circuit
2nd Stage Heating Circuit
24 VAC, Common
Note 1: E and W2 terminals jumpered at thermostat.

18
SimpleComfort®2201 Electronic Thermostat Conversion to:
Lennox CB19 Heat Pump Systems
SimpleComfort® 2201
CW2EGBOY1R
Lennox CB19
Low Voltage Terminal Board
R
Y
O
G
E
W
L
C
T
24 VAC, Return
Compressor Contactor
Reversing Valve (Cooling Mode)
Fan Contactor Circuit
Emergency Heating Circuit
2nd Stage Heating Circuit
24 VAC, Common