Radio Thermostat of America CT101R1 User Manual
PG 16
Product Name: CT101
Document Title: CT101 Install Guide
Document Type Code: IBIE
Part Number: 1202-003-002
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Install Guide CT101
PG 1
Caution
• Your thermostat is a precise instrument, handle it with care.
• Turn off electricity to the HVAC system before installing or
servicing thermostat or any part of the system.
• Do not turn electricity back on until work is completed.
• Do not short (jumper) across electric terminals at the control
on the furnace or air conditioner to test the system. This may
damage the thermostat.
• All wiring must conform to local codes and ordinances.
• This thermostat is designed for use with 4AA alkaline batteries
and/or 24 volt AC C wire (or a 12-24 AC or DC source) and
millivolt gas systems. Each thermostat relay load should be
limited to 1.0 amp; higher amperage may cause damage to the
thermostat.
Caution
To avoid electrical shock and
to prevent damage to the furnace, air conditioner, and
thermostat, disconnect the power supply before
beginning work. This can be done at the circuit breaker.
1202-003-002
Power Grid
status
indicator
Reset
button
bottom
cover
top cover
HVAC
selections
switches
Touch screen
Wire
terminals
Mode
button
MENU
button
ENGLISH
PG 2
TOOLS
You will need a small Phillips screwdriver and a drill with 3/16-in. (4.8mm) bit for wall mounts.
LOCATION
Replacement installations - mount the CT101 in place of the old thermostat.
A new location will require moving your wiring.
For new installations and relocating the CT101 - follow the guidelines listed below:
• Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the oor, and in a room that
is used often.
• Do not install it where there are unusual heating conditions, such as: in direct sunlight; near
a lamp, radio, television, radiator register, replace; near hot water pipes in a wall; or near a
stove on the other side of a wall.
• Do not locate in unusual cooling conditions, such as: on a wall
separating an unheated room; or in a draft from a stairwell, door,
or window.
• Do not locate in a damp area. This can lead to corrosion that will
shorten thermostat life.
• Do not locate where air circulation is poor, such as: in a corner, an
alcove; behind an open door.
• Do not install the CT101 until all construction and painting has
been completed.
• This thermostat does not require leveling.
Good
5ft.
(1.5m)
REMOVE OLD UNIT
Switch OFF electricity to the HEATING and COOLING systems.
Then follow these steps:
• Remove cover from old thermostat. Most are snap-on types and simply pull off. Some have locking
screws on the side or front. These must be loosened. DO NOT remove wires. Note the letters
printed near the terminals. Attach labels (enclosed) to each wire for identication.
Caution
Read instructions carefully before removing any wiring from
existing thermostat. Wires must be labeled before they are
removed. THERE IS NO STANDARD COLOR CODE. When removing wires from their terminals, ignore the color of the wires and
LABEL THEM by the lettered terminal where they were screwed.
• Label the wires one at a time. You must label all the wires
before you proceed.
• With all wires labeled, remove them from the old unit.
• Make sure the wires do not fall back inside the wall. You can
wind them around a pencil to keep them from falling.
• Loosen all screws on the old thermostat and remove it from the
wall.
C
W
G
PG 3
PG 4
What wires do you have?
Make sure your wires are labeled. This may require you to
nd the ‘other end’ connection for each wire on your heating or air conditioning equipment and read
the label there. Refer to the Wire Reference page at end of install section for better understanding of
wire labels from different HVAC system makers.
IMPORTANT: The CT101 runs on 4 AA alkaline batteries and/or the C wire if available. If you do
not have a C wire you can run a new wire from the HVAC or use a standard 12-24V [AC or DC] wall
transformer. A constant power source is required when using a radio module.
IMPORTANT: If you have both RH and RC you need to
Jumper
wire
remove the jumper wire between these 2 terminals.
Prepare Wires
Y2
Y
RH RC
G A
Please follow these guidelines for safe and
secure wire connections:
• You will need at least 2.6” of wire for each of your connections to the CT101.
• If you do not have enough wire, splice additional wire to allow enough slack.
• Terminals accept wires from 16-22awg.
• Fan out wires below the hole as shown.
• Remove insulation 1/8” from the tip of each wire.
• When handling, take care not to damage the labels for each wire.
C
from HVAC
System
W
G
RH
Y
2.6"
Wire Terminals
Find the step-by-step diagram for your system
WIRES
C W R
m
Fro
2 Wire
HVAC
Heat
WIRES
C W R G
From
HVAC
3 Wire
Heat
WIRES
C W Y R G
m
o
r
F
HVAC
4 Wire
Heat/Cool
WIRES
C W Y RH RC G
From
HVAC
5 Wire
Heat/Cool
• Select the referenece page
with your wiring diagram and
set-up information below.
W
C
Go To Page 13
WIRES
C Wn Yn R G
From
HVAC
C
W
Go To Page 15
R
Multi-stage Cool
Multi-Stage Heat
n
Y
n
R
C
G
W
G
R
Go To Page 13
WIRES
or
C B
From
HVAC
B
C
Go To Page 15
C
W
Y
Go To Page 14 Go To Page 14
O Y R G
4 Wire Heat Pump
w/o Aux Heat
O
Y
R
or
• The C-wire is optional but
R
G
C
RH
W
Y
RC
prefered for all installations
G
[shown dotted in diagrams].
• Hot Water systems
accessoroes are on Page 16
WIRES
C B
From
HVAC
or
O AUXn Yn R G
Multi-stage
Heat Pump
w/
Multi-stage
Aux Heat
• If your combination of
wires is not above you can
use the wiring table at the
end if the install section to
determine your connections,
B
C
G
O
or
Go To Page 16
Wn
Yn
R
G
contact customer support for
help.
PG 5
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