ICM Controls SC 1800 Instrucciones generales

Manual Changeover

Non-Programmable

Hardwired

SC 1800

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 Electric Systems

• Mercury-Free, Environmentally Safe

Table of Contents

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

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

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

Package Contents/Tools Required........................................................................................2

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

To Remove Existing Thermostat .........................................................................................3

Replacing Wiring Labels .......................................................................................................4

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

Installing and Changing Batteries.........................................................................................5

Wiring Diagrams...................................................................................................................6

Heating Only .....................................................................................................................6

Zone Valve/Damper Motor System ...................................................................................7

Setting the Setpoint Temperature .......................................................................................8

Setting the Temperature Differential ...................................................................................8

Changing Fahrenheit to Celsius............................................................................................8

Starting the Thermostat ......................................................................................................8

A Quick Test.........................................................................................................................9

Troubleshooting ...................................................................................................................9

Room Temperature Setpoint

Room Temperature

Low Battery Signal

Temperature Differential Setting

SET

ROOM

LO BAT

DIFF

Celsius/

Fahrenheit

Jumper

Heat Switch

Battery Compartment

Fan Switch

Electric/Gas

Switch

Parts Diagram

Package Contents/Tools Required

Package includes: SimpleComfort®1800 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.

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 (7°C to 32°C) Accuracy: ± 1°F (± 0.5°C)

Differential Rage: 1°F to 3°F (0.5°C to 1.5°C)

System conﬁgurations: 1-stage heat, gas, oil, electric

Terminations: R, W, 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

• Use this thermostat only as described in this manual

Specications

To Remove Existing Thermostat

The SimpleComfort

1800 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 Fahrenheit or Celsius display; three available temperature differential

settings

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 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 sections for instructions on how to install this thermostat.

General Description

Replace the old labels with the enclosed new labels. Old New Type

F, G G Fan control relay

H, W, 4 W Heating control

M, 4, RH, RS, R R Transformer, hot side

Replacing Wiring Labels

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.

2. Move the Fan Auto/On switch into Auto 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.

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 (Pages 6-7).

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

14. Set the fan switch to Electric or Gas/Oil

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

15. Insert two fresh “AA” alkaline batteries into thermostat, oriented in the direction shown on the battery

compartment.

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.

1. Move the Off/Heat switch into the Off position.

2. Move the Fan Auto/On switch into Auto position.

3. 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.

Installing and Changing Batteries

Heating Only

3-Wire,

Single Transformer

2-Wire,

Single Transformer or Millivolt

Wiring Diagrams

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 8).

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 ﬁrst 10 seconds of operation, the temperature differential is displayed.

3. Press the or button to select desired setting.

Setting the Temperature Differential

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

degrees Celsius:

1. Remove the cover and batteries.

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

3. Reinstall the batteries and cover. Your LCD readout changes accordingly.

Changing Fahrenheit to Celsius

Move the Fan Auto/On switch into the Auto position.

Move the Off/Heat switch into the Heat position.

Starting the Thermostat

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.

Setting the Setpoint Temperature

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