Honeywell RTH6300B User manual

RTH6300B
Programmable Thermostat
Installation
Guide

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Installation tips................................2
Pre-installation checklist ................3
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Remove old thermostat ..................5
Identify and label wires ..................6
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Wallplate mounting ........................9
Wire connections..........................12
Battery installation ........................14
Thermostat mounting ..................15
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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
AAppppeennddiicceess
In case of difficulty ......................22
Customer assistance......................25
Replacement parts ........................25
Limited 1-year warranty ................26
RTH6300B Programmable Thermostat
1
Table of contents
® U.S. Registered Trademark. Patents pending.
Copyright © 2005 Honeywell International Inc. All rights reserved.
Need Help?
For assistance with this product please visit www.honeywell.com/yourhome
or call Honeywell Customer Care toll-free at 1-800-468-1502
Read and save these instructions
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.

GGeettttiinnggssttaarrtteedd
Installation tips................................2
Pre-installation checklist ................3
OOllddtthheerrmmoossttaattrreemmoovvaall
Remove old thermostat ..................5
Identify and label wires ..................6
NNeewwtthheerrmmoossttaattiinnssttaallllaattiioonn
Wallplate mounting ........................9
Wire connections..........................12
Battery installation ........................14
Thermostat mounting ..................15
SSyysstteemmsseettuupp
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
AAppppeennddiicceess
In case of difficulty ......................22
Customer assistance......................25
Replacement parts ........................25
Limited 1-year warranty ................26
RTH6300B Programmable Thermostat
1
Table of contents
® U.S. Registered Trademark. Patents pending.
Copyright © 2005 Honeywell International Inc. All rights reserved.
Need Help?
For assistance with this product please visit www.honeywell.com/yourhome
or call Honeywell Customer Care toll-free at 1-800-468-1502
Read and save these instructions
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.

RTH6300B Programmable Thermostat
3
Installation Guide
2
Installation is easy — even if you’ve never done it before!
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).
Pre-installation checklist
Check to make sure your package includes the following items:
Caution card Wire labels
Operating manual
Wall anchors and
mounting screws
(2 each)
RTH6300B thermostat
(wallplate attached to back)
Quick
reference
card

RTH6300B Programmable Thermostat
3
Installation Guide
2
Installation is easy — even if you’ve never done it before!
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).
Pre-installation checklist
Check to make sure your package includes the following items:
Caution card Wire labels
Operating manual
Wall anchors and
mounting screws
(2 each)
RTH6300B thermostat
(wallplate attached to back)
Quick
reference
card

RTH6300B Programmable Thermostat
5
Installation Guide
4
Remove your old thermostatPre-installation checklist
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
1TTuurrnnooffffppoowweerrat heating/cooling system (or fuse/circuit-breaker panel).
2 Remove cover and thermostat, but leave wallplate with wires attached.
Old thermostat
Leave wallplate in place Is there a sealed tube containing mercury?
If so, see inside front cover of this manual
for proper disposal instructions.
Cover

RTH6300B Programmable Thermostat
5
Installation Guide
4
Remove your old thermostatPre-installation checklist
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
1TTuurrnnooffffppoowweerrat heating/cooling system (or fuse/circuit-breaker panel).
2 Remove cover and thermostat, but leave wallplate with wires attached.
Old thermostat
Leave wallplate in place Is there a sealed tube containing mercury?
If so, see inside front cover of this manual
for proper disposal instructions.
Cover

RTH6300B Programmable Thermostat
7
Installation Guide
6
Did you purchase right thermostat? Count wires to check.
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 wirein your total.
If the total (not counting C or 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.
Do you have 6 or more wires? If so, stop now.
You may have purchased the wrong replace-
ment thermostat.
Identify wires you will not use
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 “CC” or “CC11,” 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.
Do not use unconnected wires
Do not use Cor C1 wire

RTH6300B Programmable Thermostat
7
Installation Guide
6
Did you purchase right thermostat? Count wires to check.
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 wirein your total.
If the total (not counting C or 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.
Do you have 6 or more wires? If so, stop now.
You may have purchased the wrong replace-
ment thermostat.
Identify wires you will not use
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 “CC” or “CC11,” 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.
Do not use unconnected wires
Do not use Cor C1 wire

RTH6300B Programmable Thermostat
9
Installation Guide
8
Label wires and remove old wallplate
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.
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.
Insert quick reference card into slot in
back of thermostat.
Remove wallplate and install quick reference card
Wallplate Thermostat
Insert finger into wire hole and pull to
remove wallplate from new thermostat.