ICM Controls SC 2000 Manuel d'instructions

Manual Changeover

Non-Programmable

Battery

SC 2000

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/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

Table of Contents

Parts Diagram ............................................................................................................................. 1

Speciﬁcations .............................................................................................................................. 2

Important Safety Information ..................................................................................................... 2

Package Contents/Tools Required............................................................................................... 3

General Description..................................................................................................................... 3

To Remove Existing Thermostat ................................................................................................ 4

To Install Thermostat .................................................................................................................. 4

Installing and Changing Batteries................................................................................................ 6

Replacing Wiring Labels .............................................................................................................. 6

Operation .................................................................................................................................... 7

A Quick Test................................................................................................................................ 8

Wiring Diagrams.......................................................................................................................... 9

Troubleshooting ........................................................................................................................ 13

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

Mode Switch Fan Switch

Electric/Gas

Switch

Battery

Compartment

Heat Pump/

Non-Heat

Pump Jumper

Celsius/

Fahrenheit

Jumper

WRC RH

YBOG

HEATCOOL OFF

ONAUTO

ELECTRIC

GAS

2000

F–C

NON–HP

High Temperature

Switch

Freeze Switch

Important Safety Information

Input:

• Voltage: Millivolt to 30 VAC/VDC

• 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 conﬁgurations: Single-stage heat, single-stage cool

or single-stage heat pump, gas, oil,

electric

• Terminations: RC, RH, W, Y, O, B, G

SET

ROOM

LO BAT

DIFF

Low battery signal

Temperature

differential setting

Room temperature

setpoint

• 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

Specications

Package Contents/Tools Required

Package includes: SimpleComfort®2000 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.

• The SimpleComfort®2000 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: 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 5-minute

delay between the system turning off and the A/C starting

• System Customization: Choose Fahrenheit or Celsius display; three available temperature differential

settings

General Description

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.

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. Move the Cool/OFF/Heat switch to OFF

To Install Thermostat

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. Move the FAN AUTO/ON switch to AUTO.

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.

12. Seal hole for wires behind thermostat with non-ﬂammable insulation or putty.

13. Set the fan switch to electric or gas/oil, and heat pump jumper to NON-HP or HP.

14. Set the temperature scale jumper to Fahrenheit or Celsius.

15. Install two “AA” alkaline batteries.

16. Replace cover on thermostat by snapping it in place.

17. Turn on power to the system at the main service panel.

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.

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.

Installing and Changing Batteries

Replace the old labels with the enclosed new labels:

Replacing Wiring Labels

Old New Type

F, G G Fan control relay

Cool active reversing valve

Heat active reversing valve

Cooling control

H, W, 4 Heating control

Cooling transformer, hot side

Heat transformer, hot side

If the C terminal is the cooling control, connect to Y terminal; if it is the

common side of the transformer, cap the wire and tuck into the wall

Setting the Room Temperature (Setpoint Temperature)

Step 1: Press one of the arrow buttons; the current temperature setting displays.

Step 2: Press the or arrow button until the desired temperature setting displays.

The new temperature setting is automatically saved. After 5 seconds, the display returns to showing the

current room temperature.

Setting a New Temperature Differential

The default temperature differential is 1°. 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.

Step 1: Reset thermostat by removing batteries for 10 seconds.

Step 2: For the ﬁrst 10 seconds of operation, the temperature differential is displayed.

Press the or arrow button to select desired setting.

Changing Fahrenheit to Celsius

The temperature displays in degrees Fahrenheit as a factory set default. Follow these steps to change to

degrees Celsius:

Step 1: Remove cover and batteries.

Step 2: Move the jumper select marked Fand C(see Parts Diagram, Page 1).

Step 3: Reinstall batteries and cover.

Your LCD readout changes accordingly.

Starting the Thermostat

Step 1: Move the Fan Auto/On switch into the Auto position.

Step 2: Move the Cool/Off/Heat switch to Cool or Heat, depending on the season.

Operation

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 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 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 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 (

see Page 13

A Quick Test

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