Honeywell RTH111 series User manual

69-2384ES-01
Quick Installation Guide
RTH111
Non-Programmable Thermostat

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Non-programmable Thermostat RTH111
1
This thermostat is compatible with the following
systems:
• Gas, oil or electric furnace
• Central air conditioner
• Hot water system with or without pump
• Millivolt system
• Central heating and cooling system
• Heat pump without auxiliary/backup heat
Identify System Type
1.
This thermostat cannot be used on heat pumps with
auxiliary/backup heat or on multistage systems.

Quick Installation Guide
2
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.
Remove Old Thermostat
2.
Do not remove wallplate yet.

Non-programmable Thermostat RTH111
3
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.
Identify 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.

Quick Installation Guide
4
1) Loosen the locking screw at the bottom of the
thermostat. Note that the screw is captive and
cannot be removed from the wallplate.
2) Separate the thermostat from the wallplate as per
Figure 1.
3) Position the wallplate against the wall and mark
hole positions with a pencil.
NOTE: Levelling is for esthetics only and will not
affect the performance of the thermostat.
4) Drill holes at the marked positions and insert
supplied wall anchors.
5) Pass the wires through the large opening located
at the bottom center of the wallplate as per
Figure 2.
6) Secure the wallplate to the wall with supplied
mounting screws as per Figure 3.
7) Connect the wires to the terminals.
Mount New Wallplate
4.
Figure 1
Figure 2 Figure 3

Non-programmable Thermostat RTH111
5
Typical Wiring
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.
Connect Wires
5.
Labels don’t match?
If a wire does not match any terminal on the thermostat,
see next page.

Quick Installation Guide
6
Alternate Wiring
If a labeled wire does not match any terminal
designation, see diagram below.
Do not use C, C1 or X wire. Do not use B wire if you already
have O wire. Wrap bare end of wire with electrical tape.
This thermostat cannot be used if your old thermostat had
any two of the following wires: R, RC, RH, 4 and V.
Place a jumper (piece of wire) between Y and W if you have
a heat pump without auxiliary/back-up heat.

Connect Wires (cont’d)

Non-programmable Thermostat RTH111
7
Set jumper JP1, on the back of the thermostat, if you
have connected a wire to the G terminal.
Incorrect jumper setting: An incorrect setting is
noticeable
in a gas or oil heating system. When heating
starts, you will initially feel cold air coming out of the vents
as the fan is running before the furnace has enough time
to heat up the air.
Set Heating Fan Control
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.
JP1

Quick Installation Guide
8
Set jumper JP2, on the back of the thermostat, if you
have a heat pump.
Incorrect jumper setting: The heat pump operation
will be reversed, i.e., it will cool in Heat mode and will
heat in Cool mode.
Set Heat Pump Reversing Valve
7.
OLeave the jumper in this factory-set
position if you have connected O wire to
the O/B terminal.
BPlace the jumper to this position if you
have connected B wire to the O/B terminal.
JP2