Honeywell RTH3100C User manual

Installation

Guide

RTH3100C

Non-Programmable Digital Thermostat

69-1889EF-1

Read and save these instructions.

® U.S. Registered Trademark. Patents pending.

Need Help?

For assistance with this product please visit http://yourhome.honeywell.com

or call Honeywell Customer Care toll-free at 1-800-468-1502

CAUTION: ELECTRICAL HAZARD

Turn off power at the furnace or the fuse/circuit breaker panel before you begin.

MERCURY NOTICE

If this product is replacing a control that contains mercury in a sealed tube, do not

place the old control in the trash. Contact your local waste management authority for

instructions regarding recycling and proper disposal.

RTH3100C

Getting started

Installation tips...........................................2

Pre-installation checklist ...........................3

Old thermostat removal

Remove old thermostat.............................5

Identify and label wires..............................6

New thermostat installation

Wallplate mounting .................................... 8

Wire connections .....................................11

Battery installation...................................13

Thermostat mounting ..............................14

System setup

How to change settings...........................15

Set auxiliary heat cycle rate....................16

Set emergency heat cycle rate ...............17

Set temperature display ..........................18

Appendices

In case of difficulty...................................19

Customer assistance ............................... 21

Accessories.............................................. 21

1-year limited warranty............................22

Table of contents

Installation Guide

Your new thermostat has been designed for fast, easy installation. Just follow the

simple, step-by-step instructions in the following pages.

Install in three simple steps

• Label wires and remove your old thermostat (see pages 5-7).

• Install and wire your new thermostat (see pages 8-14).

• Set your new thermostat to match your heating/cooling system

(see pages 15-18).

Installation tips

• Have everything you need ready to go before you begin (see pages 3-4).

• Do not use wire color as a guide. Use wire labels instead (see page 7).

Installation is easy — even if you’ve never done it before!

RTH3100C

About your new thermostat

RTH3100C thermostat

(wallplate attached to back)

Operating Manual

Wall anchors and

mounting screws

(2 each)

Wire Labels

Check to make sure your package includes the following items:

Pre-installation checklist

Installation Guide

Required tools & supplies

• No. 2 Phillips screwdriver

• Small pocket screwdriver

• Drill

• Drill bit (3/16” for drywall, 7/32” for plaster)

• Hammer

• Pencil

• Electrical tape

• Level (optional)

• Two fresh AA alkaline batteries

Pre-installation checklist

RTH3100C

1. Turn off power at heating/cooling system (or fuse/circuit-breaker panel).

2. Remove cover and thermostat, but leave wallplate with wires attached.

Remove your old thermostat

Leave wallplate in place.

Old thermostat

Cover

Is there a sealed tube containing mercury?

If so, see inside front cover of this manual

for proper disposal instructions.

Installation Guide

Do not use unconnected wires.

If any wires are not attached to terminals in your old thermostat, do not connect them

to your new thermostat.

Wrap the bare metal ends of each unused wire with electrical tape, so it cannot touch

and short out other wires.

Identify wires you will

not

use

RTH3100C

Use a screwdriver to disconnect wires one by one. As you disconnect each wire,

wrap it with the label matching the letter on your old thermostat. (Adhesive labels are

supplied in your thermostat package.)

Remove the old wallplate only after all wires are labeled. Be careful not to let loose

wires fall into the wall opening.

Label wires and remove old wallplate

Wrap supplied labels securely around each wire.

Do not let wires fall into wall opening!

Aux

IGNORE WIRE COLORS:

Use only letter designations to identify wire types.

Installation Guide

PULL HERE

HIPS

Pull at bottom to remove thermostat from wallplate.

Remove wallplate

Wallplate

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