Honeywell RCT8100 User manual

Quick Installation Guide
RCT8100
Programmable Thermostat
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Do you need assistance?
We are here to help.
Call 1-800-468-1502.
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RCT8100 Programmable Thermostat
1
Installation is Easy
Your new thermostat has been designed for fast and
easy installation. Just follow the simple step-by-step
instructions in the following pages.
nIdentify your system type.
oRemove your old thermostat.
pIdentify the wires.
qMount the new wallplate.
rConnect the wires.
sIf the wire labels don’t match.
tSpecify the furnace type.
uInstall the batteries.
vInstall the thermostat.
wSet the system.
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Quick Installation Guide
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This thermostat is compatible with the following
systems:
• Gas, oil or electric furnace
• Central air conditioner
• a hot water system with or without pump
• a millivolt system
• a central heating and cooling system
If you are not sure of your system type or if you have
any other questions, call us toll-free at 1-800-468-1502.
nIdentify System Type 1.
This thermostat is not compatible with
heat pumps or multi-stage systems.
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RCT8100 Programmable Thermostat
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1) Turn power off at the heating/cooling system.
2) Remove old thermostat, but leave wallplate with
wires attached.
MERCURY NOTICE: Do not put 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.
oRemove Old Thermostat 2.
Do not remove wallplate yet.
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Quick Installation Guide
4
If any wires are not attached to your old thermostat or are
attached to a terminal marked Cor C1, they will not be
connected to your new thermostat. Wrap the bare metal end
of each of these wires with electrical tape, so it cannot touch
and short other wires.
Disconnect wires and remove the old wallplate only
after all wires are labeled. Wrap the wires around
a pencil to prevent them from falling though the
wall opening.
pIdentify Wires 3.
Do not use
non-connected wires.
Do not use Cor C1 wires
Identify and label each wire.
IGNORE WIRE COLORS:
Use terminal screw
designations to identify
wires.
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RCT8100 Programmable Thermostat
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1) Remove coverplate.
2) Loosen screw (the
screw remains
captive on wallplate).
3) Remove thermostat.
4) Mark and drill
appropriate mounting
holes (or use existing
holes). Insert plastic
anchors. Pass wires
through opening of
wallplate and secure
wallplate to the wall
using provided
screws.
qMount New Wallplate 4.
Labels don’t match?
If a wire does not match any terminal on the thermostat,
see next page.
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Quick Installation Guide
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1) Match each labeled wire with the terminal having
the same letter.
2) Loosen the terminal screws using a screwdriver,
insert the wires, then tighten the screws.
3) Push any excess wire back into the wall opening.
rConnect Wires (typical wiring) 5.
Remove jumper
if you have both
R and Rc wires.
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RCT8100 Programmable Thermostat
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If a labeled wire does not match any terminal
designation, see diagram below.
Do not use C, X or B. Wrap bare end of wire
with electrical tape.
If wires are connected to both Rh and Rc
terminals, remove jumper (see previous
page).
s
Connect Wires (less common wiring)
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Quick Installation Guide
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Set the Jumper J2, on the back of the thermostat, if
you have connected a wire to the G terminal.
tSpecify Furnace Type 6.
HG Leave the jumper in this factory-set
position if you have a gas or oil furnace.
HE Place the jumper to this position if you
have an electric furnace.
J2 jumper
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