Honeywell RTH5100B User manual

Installation

Guide

RTH5100B

Non-Programmable Digital Thermostat

69-1926EF

Read and save these instructions.

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

® U.S. Registered Trademark. Patents pending.

TURN OFF POWER at the heating/cooling system or the fuse/circuit

breaker panel before you begin.

MERCURY NOTICE: Do not place your old thermostat in the trash

if it contains mercury in a sealed tube. Contact your local waste

management authority for instructions regarding recycling and

proper disposal.

RTH5100B

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 ......................9

Wire connections .......................12

Battery installation.....................14

Thermostat mounting ................15

System setup

How to change settings.............16

Set system type .........................17

Set changeover valve ................18

Set heating fan control ..............19

Set heating cycle rate................20

Set temperature display ............21

Appendices

In case of difficulty.....................22

Customer assistance .................25

Replacement parts.....................25

1-year limited warranty..............26

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 5-8).

• Install and wire your new thermostat (see pages 9-15).

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

(see pages 16-21).

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 8).

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

RTH5100B

RTH5100B thermostat

(wallplate attached to back)

Operating manual

Wire labels

Wall anchors and

mounting screws (2 each)

Operating

Manual

RTH5100B

Non-Pro grammab le Digit al Thermo stat

69-1927ES

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 AAA alkaline batteries

Pre-installation checklist

RTH5100B

Is there a sealed tube containing mercury?

If so, see inside front cover of this manual

for proper disposal instructions.

Old

thermostat

Cover

Leave wallplate in place

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

Installation Guide

Do you have 6 or more wires? If so, stop

now. You may have purchased the wrong

replacement thermostat.

Count the number of wires coming out of the wall and attached to

terminals in your old thermostat. If any of them are attached to a

terminal marked “C” or “C1” do not count that wire in your total.

If the total (not counting Cor C1) is 5 wires or less, proceed to the

next page. If you have 6 or more wires, your new thermostat may

not be compatible with your system. Stop installation and call

1-800-468-1502 for advice.

Did you purchase right thermostat? Count wires to check.

RTH5100B

Do not use unconnected wires.

Do not use Cor C1 wire.

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

not connect them to your new thermostat.

If a wire is attached to a terminal marked “C” or “C1,” disconnect it.

You will not connect it 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

Installation Guide

Wrap supplied labels securely around each wire.

Do not let wires fall into wall opening!

IGNORE WIRE COLORS: Use only

letter designations to identify wire types.

Use a screwdriver to disconnect wires one by one. As you discon-

nect 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

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