Honeywell RTH3100C1002-E1, RTH3100C User Manual
RTH3100C
69-1889EF-1
Non-Programmable Digital Thermostat
Installation
Guide
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.
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
Read and save these instructions.
® U.S. Registered Trademark. Patents pending.
Copyright © 2006 Honeywell International Inc. All rights reserved.
Table of contents
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
1
Installation Guide
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 5-7).
• 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).
2
About your new thermostat
Pre-installation checklist
Check to make sure your package includes the following items:
RTH3100C
Wall anchors and
mounting screws
(2 each)
RTH3100C thermostat
(wallplate attached to back)
Operating Manual
Wire Labels
3
Installation Guide
Pre-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
4
Remove your old thermostat
1. Turn off power at heating/cooling system (or fuse/circuit-breaker panel).
2. Remove cover and thermostat, but leave wallplate with wires attached.
RTH3100C
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.
5
Installation Guide
Identify wires you will
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.
not
use
Do not use unconnected wires.
6
RTH3100C
E
O
Aux
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.
7
Installation Guide
PULL HERE
HIPS
Remove wallplate
Pull at bottom to remove thermostat from wallplate.
8
Wallplate
About your new thermostat
Mark wallplate mounting position
RTH3100C
1. Pull wires through wallplate. 3. Mark positions of
2. Level wallplate if desired
(lay level across tabs).
9
both screw holes.
Installation Guide
Mount wallplate
1. Drill holes at pencil-marked locations:
3/16” holes for drywall
7/32” holes for plaster
2. Use hammer to tap anchors
into holes until flush with wall.
3. Place wallplate over anchors
and insert screws. Check level
if desired, then tighten screws.
10
Connect wires (typical installation)
1. Match each labeled wire
with same letter on terminal.
2. Use a screwdriver to
loosen screw terminals,
insert wires, then tighten
screws.
3. Push any excess wire back
into the wall opening.
Labels don’t match?
If labels do not match letters
on thermostat, see next page.
11
RTH3100C
Installation Guide
Aux Y G O L R B CE
Aux Y G O L R B CE
4 33 2 1 2 2
or
X
X2
or
W
W1
W2
or
Y1
M
or
F
orFor
V
VR
orHor
B
X
Connect wires (less common wire designations)
If labels do not match thermostat letters,
check the chart at right (see notes, below).
If the old thermostat had both V
and VR wires, contact a heating/
cooling contractor for help.
If the old thermostat had both O
and B wires, attach the B wire to
the C terminal. If another wire is
attached to the C terminal, call
1-800-468-1502 for help.
If the old thermostat had W1, W2
and Y wires, contact a heating/
cooling contractor for help.
If no wire matches the E terminal on the new thermostat,
use a small piece of wire to connect terminals E and Aux.
12
Install batteries
Install two fresh AA alkaline
batteries in back of thermostat.
RTH3100C
Back of thermostat
13
Installation Guide
Mount thermostat and restore electrical power
1. Align the 4 tabs on the wallplate
with corresponding slots on the
back of the thermostat, then
push gently until the thermostat
snaps into place.
2. Restore electrical power at the
heating/cooling system, or at the
fuse/circuit-breaker panel.
TIP:
If wires interfere when you
try to mount the thermostat,
push excess wire back into the
wall opening.
Wallplate
Thermostat
14
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