ICM Controls SC 2000 User manual

Installation, Operation & Application Guide
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products – plus wiring diagrams, troubleshooting tips and more,
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SC2000/SC2001
Non-Programmable Electronic Thermostats
• Permanent Memory
• Controls Single Stage Heating/
Cooling Systems
• Single Stage Heat Pump Systems
• Compatible with Gas, Oil or Electric
Systems
• Millivolt and Hydronic (water or
steam) System Compatible
• Mercury-Free, Environmentally Safe
SET
ROOM
LO BAT
DIFF
Low battery signal
Temperature
differential setting
Room temperature
Room temperature
setpoint
Specifications
SC2000 SC2001
Input: Input:
• Voltage: Millivolt to 30 VAC/VDC • Voltage: 18-30 VAC
• DCPower: 3 volts (2 “AA” alkaline batteries included)
Output:
• Maximum: 1 amp per terminal (3 amp total for all terminals)
• Temperaturecontrolranges:45°F to 90°F (7°C to 32°C)
Accuracy: ± 1°F (± 0.5°C)
• Differentialrange:1°F to 3°F (0.5°C to 1.5°C)
• Systemcongurations:
Single-stage heat, single-stage cool or single-stage heat
pump, gas, oil, electric
• Compressordelay:4 minutes
• Terminations(SC2000): RC, RH, W, Y, O, B, G
• Terminations(SC2001): R, W, Y, O, B, G, C
Important Safety Information
• Always turn off the thermostat before installing, removing, cleaning, or servicing; turn off the power at the main
power source by unscrewing fuse or switching off circuit breaker
• Do not switch to “Cool” if room temperature is below 50°F (10°C); this could damage your A/C system and cause
injury
• Do not install on voltages higher that 30 VAC
• All wiring must conform to local and national building and electrical codes and ordinances
• 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
General Description
• The SimpleComfort® thermostat is a digital, mercury-free, non-programmable, electronic thermostat
• Compatible with single-stage heating systems, heating/cooling systems, and heat pump systems; works with
gas, oil, or electric systems
• Compatible as a master thermostat in zoned system applications
• Freeze Protection Feature (SC2000 only): 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
• Built-in Compressor Protection for Air Conditioners: To protect the A/C’s compressor, there is a 4-minute
delay between the system turning off and the A/C starting
• System Customization: Choose Fahrenheit or Celsius display; three available temperature differential
settings
Package Contents/Tools Required
Packageincludes: SimpleComfort® non-programmable thermostat on base, thermostat cover, wiring labels, screws
and wall anchors, batteries (if applicable), Installation, Operation and Application Guide.
Toolsrequiredforinstallation: Drill with 3/16” bit, hammer, screwdriver.
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 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 Install 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 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 and cooling system by removing the fuse or switching off the appropriate circuit
breaker. Move the Cool/OFF/Heat switch to OFF .
2. Move the FANAUTO/ON switch to AUTO.
3. To remove cover, insert and twist a coin or screwdriver in the slots on the top 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 into mounting holes.
9. Align thermostat base with mounting holes and feed the control wires through wire opening.
10. Use supplied screws to mount thermostat base to wall.
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.
CAUTION! : Remove RH/RC jumper for 2 transformer system (SC2000 only).
12. Set the fanjumper to electric or gas/oil.
13. Install two “AA” alkaline batteries (SC2000 only).
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 (SC2000 only)
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 and whenever the LOBATwarning displays.
Step1: Move the Cool/Off/Heat switch into the Off position.
Step2: Move the FanAuto/On switch into the Auto position.
Step3: Remove the cover, and install the two “AA” alkaline batteries into the battery compartment. 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.
Replacing Wiring Labels
Replace the old labels with the enclosed new labels:
Old New Type
F, G G Fan control relay
O O Cool active reversing valve
B B Heat active reversing valve
Y, Y6 Y Cooling control
H, W, 4 W Heating control
C Transformer, common side
M, 4, RH, RS, R R Transformer, hot side
C Y or C
If the C terminal is the cooling control, connect to Y terminal; if it is the
common side of the transformer, connect to C terminal
SC2000 – ZoneValve/DamperMotorSystems
3-Wire,ZoneValve/DamperMotorSystem
2-Wire,ZoneValve/DamperMotorSystem
RH RC W Y B O G RH RC Y B GRH RC Y B O G
RH RC W Y O G RH RC W Y O GRH RC W Y B O
Zone 1 Zone 3Zone 2
Zone 1 Zone 3Zone 2
24 VAC
* Use appropriate
size, single pole/
double throw relay
Note: Differential temperature may need to be increased for zone/damper system
* *
Wiring Diagrams
4-Wire,SingleTransformer
HOT
120 VAC 24 VAC
Transformer
Heating
Control
HOT RH
RC
W
Y
B
O
G
120 VAC 24 VAC
Remove
Pre-Installed
Jumper
Cooling
Control
Fan
Control
(Cooling)
Transformer
HOT
120 VAC 24 VAC
T
H
E
R
M
O
S
T
A
T
Note: Both transformers must be in phase
5-Wire,TwoTransformer
Pre-Installed Jumper
RH RC RH RC
Cooling
Control
Fan
Control
SC2000 – Heating/Cooling
Parts Diagrams
SC2000 SC2001
Electric/Gas
Jumper
Mode
Switch
Fan
Switch
Electric/Gas
Jumper
Mode
Switch
Fan
Switch
Freeze
Switch
RH RC Jumper
SC2001
SC2000
RWYBOG
GAS
ELEC
RCRHWYBOG
GAS
ELEC
Battery Compartment
For Vertical and Horizontal Models
T
H
E
R
M
O
S
T
A
T
RH
RC
W
Y
B
O
G
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SC2000 – HeatingOnly
3-Wire,SingleTransformer
HOT
120 VAC 24 VAC
Heating
Control
Fan
Control
T
H
E
R
M
O
S
T
A
T
RH
RC
W
Y
B
O
G
Heating
Control
Thermopile
or
Transformer
2-Wire,SingleTransformerorMillivolt
RH RC
Pre-Installed Jumper
RH RC
Pre-Installed Jumper
T
H
E
R
M
O
S
T
A
T
RH
RC
W
Y
B
O
G
HOT
120 VAC 24 VAC
Transformer Transformer
HOT
120 VAC
Transformer
HOT
120 VAC 24 VAC
Compressor
Contactor
Fan
Relay
Compressor
Contactor
Fan
Relay
Reversing
Valve
Cooling
Control
Fan
Control
CoolActive
ReversingValve
HeatActive
ReversingValve
3-Wire,
SingleTransformer
Note: Place jumper between “W” and “Y” terminals. Note: Millivolt system may require a
transformer and/or an isolation
relay to operate properly
SC2000 – HeatPump
SC2001 – CoolOnlySC2001 – HeatPump
Pre-Installed Jumper Pre-Installed JumperPre-Installed Jumper
RH RC
4or5-Wire,SingleTransformer
24 VAC T
H
E
R
M
O
S
T
A
T
R
C
Y
G
120 VAC
HOT
Transformer
Fan
Control
W
B
O
Heating
Control
(Optional)
Cooling
Control
4-Wire,SingleTransformer
24 VAC T
H
E
R
M
O
S
T
A
T
R
C
Y
G
120 VAC
HOT
Transformer
Fan
Control
W
B
O
Heating
Control
24 VAC T
H
E
R
M
O
S
T
A
T
R
C
Y
G
120 VAC
HOT
Transformer
W
B
O
Heating
Control
G
T
H
E
R
M
O
S
T
A
T
R
C
Y
G
W
O
BB
T
H
E
R
M
O
S
T
A
T
R
C
Y
W
O
24 VAC
HOT
Transformer
24 VAC120 VAC
Transformer
24 VAC120 VAC
HOT
Transformer
Fan
Relay Fan Relay Fan Control
Cooling
Control
Reversing
Valve
Compressor
Contactor
Compressor
Contactor
HeatActive
ReversingValve
CoolActive
ReversingValve
4-Wire
SingleTransformer
Place jumper between “W” and “Y” terminals. Millivolt systems may require a
transformer and/or an isolation
relay to operate properly.
Troubleshooting
Symptom Remedy
The system isn’t turning on Check the wiring (see Installation)
Check the batteries (SC2000 only)
LCD is blank, or displaying “LO BAT” SC2000: Replace batteries, or make sure the existing ones are properly
installed (see Installing and Changing Batteries)
SC2001: Verify 24 VAC is at thermostat.
Thermostat is not properly controlling
the fan
Check that the Gas/Electric jumper setting matches your system (gas
or electric)
Thermostat is continuously turning on
and off
Increase the temperature differential
(see Conguration)
Temperature displayed is not accurate Plug the hole for wiring behind the thermostat with non-ammable
insulation to prevent airow into the thermostat
7313 William Barry Blvd., North Syracuse, NY 13212
(Toll Free) 800-365-5525 (Phone) 315-233-5266 (Fax) 315-233-5276
www.icmcontrols.com
LIAF128-1
SC2001 – HeatingandCooling
SC2000 – CoolOnly
SC2001 – HeatingOnly
Configuration
Enter conguration by simultaneously pressing both the and buttons for 1 second while in OFF mode.
Use the and buttons to change the setting. Press both the or buttons to advance to the next
conguration screen. Exit conguration by sliding the Cool/Off/Heatmode switch to Heator Coolmode.
• F/C: Select to operate in Fahrenheit or Celsius
• Differential1-5: Default set to 1 degree. When heating or cooling turn on too frequently you can increase the
temperature differential. A larger differential results in longer run times.
• Heattimedelay
– H0 = No time delay between heat calls
– H1 = 4-minute time delay between heat calls
Starting the Thermostat
Move the Cool/Off/Heat switch to the Cool or Heat position, depending on the season.
Setting the Setpoint Temperature
1. Place Cool/Off/Heat switch to the Cool or Heat position.
2. Press the or button a single time to see the currenttemperature settting.
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.
A Quick Test
 CAUTION! : Do not switch system to cool if the temperature is below 50°F (10°C). This can damage the
air conditioning system and may cause personal injury.
Donotshortjumperacrossterminalsonthegasvalveoratthesystemcontroltotestinstallation.
Action: Set the Cool/Off/Heat switch to Cool. Press the down button until the temperature
setting is 3°F below the room temperature.
Result: The A/C system and fan should turn on.
Action: Set the Cool/Off/Heat switch to Off.
Result: The A/C should turn off (There may be a fan delay).
Action: Set the Cool/Off/Heat switch to Heat. Press the up button until the temperature
setting is 3°F above the room temperature.
Result: The heating system and fan should turn on (There may be a time delay depending on your
system).
Action: Set the Cool/Off/Heat switch to Off.
Result: The heating system should turn off (There may be a fan delay).
Action: Set the FanAuto/On switch to On.
Result: The blower fan should turn on.
Action: Set the FanAuto/On switch to Auto.
Result: The blower fan should turn off.
If the above test was successful, you have a proper installation.
Ifnot: Double check that wires are securely connected and are connected to the proper terminals. Consult the
troubleshooting section.
T
H
E
R
M
O
S
T
A
T
RH
RC
W
Y
B
O
G
T
H
E
R
M
O
S
T
A
T
RH
RC
W
Y
B
O
G
T
H
E
R
M
O
S
T
A
T
RH
RC
W
Y
B
O
G
T
H
E
R
M
O
S
T
A
T
R
C
Y
G
W
O
B
Reversing
Valve
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.
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