ICM Controls SC 1800 Installation, Operation & Application Manual

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

1

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

2

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