2GIG-CT100-Install Guide

PG 1
Install Guide CT100
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 VAC 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.
ENGLISH
1202-001-001
Power Grid
status
indicator
top cover
Touch screen
Wire
terminals
Mode
button
button
MENU
Reset
button
HVAC
selections
switches
bottom
cover
PG 2 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 CT100 in place of the old thermostat.
A new location will require moving your wiring.
For new installations and relocating the CT100 - follow the guidelines listed below:
• Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the loor, 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, ireplace; 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 CT100 until all construction and painting has
been completed.
• This thermostat does not require leveling.
Good
5ft.
(1.5m)
2
PG 3
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 identiication.
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 remov-
ing 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.
R
W
G
PG 4 4
What wires do you have?
Make sure your wires are labeled. This may require you to
ind 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 CT100 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.
IMPORTANT: If you have both RH and RC you need to
remove the jumper wire between these 2 terminals.
Prepare Wires

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 CT100.
• 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.

G
C
Y
R
W
2.6"
from HVAC
System
Jumper
wire
Wire Terminals
Y RH RC G A
Y2
4
PG 5
Find the step-by-step diagram for your system
• Select the reference page
with your wiring diagram and
set-up information below.
• The C-wire is optional but
preferred for all installations.
It will make batteries last a
long time. (This connection
is shown as dotted in
diagrams).
• Hot Water systems
accessories are on Page 16.
• If your combination of
wires is not shown, you can
use the wiring table at the
end of the install section
to ind your connections. If
additional help is required,
please contact customer
service.
G
W Y RH RC G
5 Wire
Heat/Cool
From

HVAC
R
C
C
Y
RH W
W Y R G
4 Wire
Heat/Cool
From

HVAC
G
C
Y
R W
W R G
3 Wire
Heat
From

HVAC
C
R
G W
From

HVAC
C
W
W R
R
2 Wire
Heat

W
I
R
E
S
W
I
R
E
S
W
I
R
E
S
W
I
R
E
S
G R
Wn Yn R G
Multi-stage Cool
Multi-Stage Heat
From

HVAC
Yn
C
Wn
B or O AUXn Yn R G
Multi-stage
Heat Pump w/
Multi-stage
Aux Heat
From

HVAC
R
C
O
or
Wn
B
G
Yn
G
B or O Y R G
4 Wire Heat Pump
w/o Aux Heat
From

HVAC
R
C
O
or
Y
B
W
I
R
E
S
W
I
R
E
S
W
I
R
E
S
Go To Page 15 Go To Page 16 Go To Page 15
Go To Page 13
Go To Page 14 Go To Page 14 Go To Page 13
PG 6 6
C
G
Y H
C
G
Y H
C
G
Y H
C
G
Y H
C
G
Y H
C
G
Y H
• “Fan out” wires as illustrated with CT100 below the wall
opening. As in the example: fan out the wires so that the
C wire is above the C terminal, the W above the W. This
allows the CT100 to it snug to the wall.
Caution

Do not allow wires to touch each other or parts on thermostat.
• Position the wires behind the CT100 and up over the
terminal area.
• Do not bunch wires behind the CT100. Feed any slack
back into the wall opening.
Connect Your Wires

• Connect labeled wires only to a terminal with the same letter label.
• Insert the wire in the terminal well and tighten the screw securely.
NOTE: If you wish you can mount the CT100 to the wall irst, and then connect the wires.
• The CT100 can be externally powered with a power source rated from 12V to 24V, AC or DC, at
100ma or greater. If used, connect to the C and RH terminals (no polarity).
from HEAT/COOL system
C B O WW2 Y Y2 RHRCG A

RH
Y
G
C
W
6
PG 7
Mount the CT100 to Wall

1. Hold the CT100 against the wall, with the wires coming over the top;
above terminal block. The CT100 will cover the hole in the wall.
2. Position CT100 for best appearance.
3. Attach the CT100 to the wall with the screws provided.
4. If you are mounting the CT100 to sheet rock or if you are using the
old mounting holes, use the plastic anchors provided.
5. Mark irst and drill a 3/16-in.(4.8mm) hole for the insert at each screw
location, then mount the unit.
C
G
Y H
C
G
Y H
C
G
Y H
C
G
Y H
C
G
Y H
C
G
Y H
Wall
Wires
Wall
anchor
CT100
from
HEAT/COOL
system
C
W
Y
RH
G
Place wires like this
Screw to wall
PG 8 8
HVAC Selection

• Set the HVAC TYPE switch in the NORMAL position if you have conventional
natural gas, propane, oil, or electric heat. If you have a HEAT PUMP system, set
the HVAC TYPE switch to HEAT PUMP. They are located in the battery area.
• Set the HEAT TYPE switch in the GAS position if you have normal gas or oil heat
or if you have a heat pump with gas or oil auxiliary heat. Put the HEAT SOURCE in
the ELEC position if you have normal electric heat or if you have a heat pump with
electric auxiliary heat.
IMPORTANT: Press the RESET button (under top
cover) to implement the HVAC switch selections.
Install 4 AA Batteries

• Install 4 AA alkaline batteries [required] following the
marked polarity in the battery compartment. Put the
battery in negative end irst against the spring, then
push the positive end in.

• With all the wires connected it is time to turn the AC power back on. Do this at the breaker you used
to switch it off. The CT100 will power-up in the OFF mode. Your CT100 is not conigured to operate
your HVAC system yet. You must now conigure your thermostat for your HVAC system.
AA
AA
AA
AA
HEAT
PUMP
HVAC
TYPE
HVAC
TYPE
HEAT฀
TYPE
HEAT
TYPE
NORMAL GAS
ELEC

8
PG 9
Caution
Special Battery Warning
Always replace the batteries as soon as the “Low Batt” lashes. The thermostat is a battery powered
device. You must be responsible to replace batteries before they run out. Failure to replace batteries can
result in overheating or excessive cooling of your house.
• Even if the “Low Batt” indicator does not lash, you should always replace the batteries at least once a
year. Replacing the batteries also helps to prevent leakage that can corrode and damage the thermostat.
• If you are leaving your home for a month or more, you should replace the batteries as a precaution
against battery failure in your absence.
• Always use new alkaline batteries.
• Failing to replace the batteries, when necessary, could cause the thermostat to lose power or
malfunction. If the thermostat loses power, then the thermostat will not control the temperature which
could result in your HVAC system not functioning as you intended and lead to possible damage from
overheating or excessive cooling.
• If the thermostat batteries fail with the heat OFF, this can result in NO HEAT and possible frozen or
broken pipes and water damage.
• If the thermostat batteries fail with the cool OFF, this can result in NO COOL and could cause possible
damage or excessive temperatures.
PG 10 10
HVAC Setup on Screen

IMPORTANT: Make sure the CT100 is powered up and
the mode is set to OFF. Remember that the two
HVAC selection switches must be set irst [pg 8].
• With mode in OFF press MENU and touch HVAC SETUP.
• Use +/- icons to select HVAC SET UP number on screen.
The LCD display will show your selection and indicate the
number of stages you have selected. During setup, 2nd STG
will blink when both heat and cool have 2nd stages.
If you have a Normal HVAC system...
HEAT and COOL select 1
2 stage HEAT, 1 stage COOL select 2
1 stage HEAT, 2 stage COOL select 3
2 stage HEAT, 2 stage COOL select 4
Caution
Do not change
the HVAC setup or HVAC selection switches if the thermostat is included to Z-Wave network. The
HVAC system must be changed, irst EXCLUDE the thermostat from the network, change the HVAC
setup, and INCLUDE the thermostat to the network.

If you have a HEAT PUMP HVAC system...
HEAT PUMP with no AUX heat select A
2 stage HEAT PUMP with no AUX select b
HEAT PUMP with AUX heat select C
HEAT PUMP with 2 stage AUX heat select d
2 stage HEAT PUMP with AUX heat select E
2 stage HEAT PUMP with 2 stage AUX heat select F
HEAT
2ND
STG
HVAC
SETUP
COOL
10
PG 11
Test Installation

Follow these procedures to verify you have correctly
installed the CT100.
TO CHECK FAN (If you connected the G wire):
Touch the fan icon on the HOME screen to turn the fan ON.
Verify that air is blowing from the system.
Touch the fan icon again to return to AUTO.
TO CHECK HEAT
Set the mode to HEAT by pressing the MODE button until HEAT is displayed.
Touch the temperature display to bring up the MANUAL screen.
Touch the + icon and raise the target temp to 90
o
F; allow the system 2 minutes to respond.
Verify that heat is blowing from the system. Return the Target Temperature to a normal setting. Return
mode to OFF by pressing the mode button.
If you have a heat pump, leave in off for 4 minutes before checking COOL.
TO CHECK COOL (do not operate AC if the outside temp is below 65
o
F)
Set the mode to COOL by pressing the MODE button until COOL is displayed.
Touch the - icon and lower cool Target Temperature to 50
o
F.
Allow the system 5 minutes to respond.
Verify that cool air is blowing from the system. Return the Target Temperature to a normal setting.
Return mode to OFF by pressing the mode button.
FAN
MODE
MENU
MODE
F
LINK
RADIO
TARGET TEMP
1
HEAT
AUTO
PG 12 12
Congratulations, you have successfully installed your unit. Please proceed to
the OPERATING Guide to initialize the CT100.
IMPORTANT: If you have labeled and connected your wires
and followed the correct HVAC setup, and your system still does
not operate, contact technical support.
STATEMENT OF USE: This thermostat can be used with
4AA batteries, 24VAC (C wire), 24VAC adapter, heating
and cooling systems and also millivolt heating. It cannot
be used with line voltage systems. This thermostat
is digital and your desired heat or cool temperatures
can easily be set on the large touch screen with the
+/- buttons. A minimum 4 minute off time protects the
compressor from damage.
This thermostat runs on 4AA batteries. The CT100 can be
externally powered with a power source rated from 12V
to 24V, AC or DC, at 100ma or greater. If used, connect to the C and RH terminals (no polarity). The
24VAC “C” wire is the other side of the 24VAC heating transformer and can be found where the other
thermostat wires connect at the wall or at the furnace. Do not use the common or ground side of the
line voltage.
MENU
MODE
F
LINK
RADIO
TARGET TEMP
1
HEAT
AUTO
12
PG 13
Step-by-step wiring diagrams

W
I
R
E
S
2 Wire Heat GAS MILLIVOLT or 24VAC system
STEP 1 - Connect the R wire to the RH terminal.
This connects the heat power.
STEP 2 - Connect the W wire to the W terminal.
This connects the heat.
STEP 3 - Optional - Connect the C wire to the C terminal.
Your heater is now connected to the CT100.
Please Go To Page 6
W
I
R
E
S
3 Wire Heat
STEP 1 - Connect the R wire to the RH terminal. This connects the heat power.
STEP 2 - Connect the W wire to the W terminal. This connects the heat.
STEP 3 - Connect the G wire to the G terminal on the thermostat. This
connects the fan.
STEP 4 - Optional - Connect the C wire to the C terminal.
Your system is now connected to the CT100.
Please Go To Page 6

C B O W W2 Y Y2 RH RC G A
POWER
HVAC SYSTEM
THERMOSTAT
W R C
THERMOSTAT TERMINALS
HVAC SYSTEM
THERMOSTAT
C B O W W2 Y Y2 RH RC G A
POWER
W R G C
THERMOSTAT TERMINALS
PG 14 14
W Y R G
W
I
R
E
S
4 Wire Heat/Cool
STEP 1 - Connect the W wire to the W terminal. This connects the heat.
STEP 2 - Connect the Y wire to the Y terminal. This connects the cooling compressor.
STEP 3 - Connect the RH or R wire to the RH terminal. This connects the power.
STEP 4 - Connect the G wire to the G terminal on the thermostat.
This connects the fan.
STEP 5 - Optional - Connect the C wire to the C terminal.
Your HVAC system is now connected to the CT100.

Please Go To Page 6
W Y RH RC G
W
I
R
E
S
5 Wire HEAT/Cool
STEP 1 - Connect the W wire to the W terminal. This connects the heat.
STEP 2 - Connect the Y wire to the Y terminal. This connects to the cooling compressor.
STEP 3 - Remove the jumper between RC and RH terminals [small silver wire].
STEP 4 - Connect the RH wire to the RH terminal and the RC wire to the RC terminal.
This connects the power.
STEP 5 - Connect the G wire to the G terminal. This connects the fan.
STEP 6 - Optional - Connect the C wire to the C terminal.
Your HVAC system is now connected to the CT100.

Please Go To Page 6
HVAC SYSTEM
THERMOSTAT TERMINALS
C B O W W2 Y Y2 RH RC G A
POWER
W Y R G C
HVAC SYSTEM
THERMOSTAT TERMINALS
C B O W W2 Y Y2 RH RC G A
POWER
W Y RH G C RC
*RC and RH
disconnected
14
PG 15
Wn Yn R G
Multi-stage Heat and Multi-stage Cool
The CT100 can handle up to 2 stages of HEAT and 2 stages of COOL.
STEP 1 - Connect the W, W2 wires to the W terminals.
This connects the stages of HEAT.
STEP 2 - Connect the Y and Y2 wires to the Y terminals.
This connects the stages of COOL.
STEP 3 - Connect the RH or R wire to the RH terminal.
This connects the power.
STEP 4 - Connect the G wire to the G terminal.
This connects the fan.
STEP 5 - Optional - Connect the C wire to the C terminal.
Your HVAC system is now connected to the CT100.

Please Go To Page 6
Heat Pump (heat/cool) without Auxiliary Heat
STEP 1 - Connect O wire to the O terminal or B wire to the B terminal.
This connects the change-over valve.
IMPORTANT NOTE: If you have both O and B - connect only the O wire to the O terminal and DO
NOT connect B to the B terminal (see wire reference under Trane for B wire terminal).
STEP 2 - Connect the Y wire to Y terminal. This connects the compressor.
STEP 3 - Connect the R wire to the RH terminal. This connects the power.
STEP 4 - Connect the G wire to the G terminal. This connects the fan.
STEP 5 - Optional - Connect the C wire to the C terminal.
Your HVAC system is now connected to the CT100.

Please Go To Page 6
HVAC SYSTEM
THERMOSTAT TERMINALS
C B O W W2 Y Y2 RH RC G A
POWER
W Y Y2 G R C W2
HVAC SYSTEM
THERMOSTAT TERMINALS
C B O W W2 Y Y2 RH RC G A
POWER
B O Y G R C
or
or
PG 16 16
Oor B AUXn Yn RG
Multi-stage Heat Pump with Multi-stage Aux Heat
The CT100 can handle up to 2 stages of Pump compression and 2 stages of AUX heat.
STEP 1 - Connect O wire to the O terminal or B wire to the B terminal. This connects the change-over valve.
If you have both O and B - connect only the O wire to the O terminal and DO NOT connect B to B
terminal (see wire reference under Trane for B wire terminal).
STEP 2 - Connect the AUX 1, AUX 2, to the AUX 1 and 2 respectively.
This connects the auxiliary heat.
STEP 3 - Connect the Y and Y2 wires to the Y terminals.
This connects the compressor.
STEP 4 - Connect the R wire to RH terminal. This connects the power.
STEP 5 - Connect the G wire to G terminal. This connects the fan.
STEP 6 - Optional - Connect the C wire to the C terminal.
Your HVAC system is now connected to the CT100.

Please Go To Page 6

Accessory Wiring -

3 Wire Zoned Hot Water Heat -
For 3 wire solenoid or motor valves connect the wires shown to
the correct terminals on the CT100. If you have different letters
than shown, go to page 18 Wire Reference Table.
SOLENOID VALVE
W

A RH
CT100
MOTOR VALVE
W

RH A
CT100
FOR 3WIRE ZONED
HOT WATER
W
R
A W
R
A
HVAC SYSTEM
THERMOSTAT TERMINALS
C B O W W2 Y Y2 RH RC G A
POWER
B G R Y Y2 C O
or
or
AUX1 AUX2
16
PG 17
Wire Reference Table

Possible Wires What They Control
R or V or VR RH and RC Single power for HEAT and COOL
RH or 4 RH Power for HEAT (RH not connected to RC jumper wire removed)
RC RC Power for COOL (RH not connected to RC jumper wire removed)
W W Heat control
W2 W2 2nd stage HEAT
AUX or AUX1 AUX1 1st stage of AUX heat in the CT100
AUX2 AUX2 2nd stage of AUX heat in the CT100
Y Y COOL control or 1st stage compression for heat pump
Y2 Y2 2nd stage COOL control or 2nd stage compression for a heat pump
G or F G FAN control
C or X C 24VAC power (to power thermostat)
NOTE: TRANE, AMERICAN STANDARD and YORK often use the letter B for C
H H External Humidiier
DH DH External Dehumidiier
EX EX external fresh air bafle
B B Heat pump changeover (cool to heat, powered in heat)
O O Heat pump changeover (heat to cool, powered in cool)
B and O IMPORTANT: If there are both B and O wires (Trane pump
products) DO NOT CONNECT B to B terminal, connect B to C
terminal.
E n/a Emergency heat (do not connect, tape off)
L n/a System monitor (do not connect, tape off)
T n/a Outdoor sensor (do not connect, tape off) Wire Reference
PG 18 18
Wire Reference cont.
Possible Wires What They Control
Lennox Heat Pump
V or VR or R RH Power for HEAT
M or Y Y COOL control
Y or W or W2 W2 2nd stage HEAT
F or G G Fan control
R or O O
X or X2 or C C
Trane Products [American Standard]
B C 24VAC power (to power thermostat)
X2 Emergency heat (do not connect, tape off)
Zoned Hot Water
2 wire
Your Wires Thermostat Terminal
R RH
W W
3 Wire
Motor Driven Valves
R or 5 RH (power)
W or 4 W (heat ON)
Y or G or 6 (the 3rd wire) A (heat OFF)
3 Wire
Solenoid Valves
R RH (power)
W A (heat ON)
Y or G (the 3rd wire) W (heat OFF)
18
PG 19
APPENDIX 1 Multi staged HVAC theory of operation for the CT100
Staging for 2 stage normal or heat pump Cool
Target Temperature Maintenance in COOL - If the room temperature is within the target temperature plus the
DIFF setting, the irst stage of cool will turn on. If the target temperature is not reached within 15 minutes, the
second stage of cooling will turn on and join the irst stage to reach the target temperature.
Target Temperature Recovery in COOL- If the room temperature is beyond the new target temperature plus
the DIFF setting, the irst stage will turn on. Ten seconds later, the second stage will turn on with the irst stage
to help reach the new target.
With FAST recovery, both stages stay on until the new target temperature is reached. With ECON recovery,
both stages stay on until the DIFF setting is reached. Then, the second stage shuts off and the irst stage stays
on to the new target.
Staging for 2 stage normal Heat
Target Temperature Maintenance in HEAT - If the room temperature is within the target temperature minus
the DIFF setting, the irst stage of heat will turn on. If the target temperature is not reached within 15 minutes,
the second stage of heat will turn on and join the irst stage to reach the target temperature. Example: Target
temperature 70F, DIFF at 2F, maintenance occurs at room temperatures of 69F and 68F.
Target Temperature Recovery in HEAT- If the room temperature is beyond the new target temperature minus
the DIFF, the irst stage will turn on. Ten seconds later, the second stage will turn on and join the irst stage
to help reach the target temperature.. With FAST recovery, both stages stay on until the target temperature is
reached.
With ECON recovery, both stages stay on until the DIFF setting is reached. Then, the second stage shuts off
and the irst stage stays on until the target temperature is reached.
Staging for a 2 stage Heat Pump with no auxiliary heat
Target Temperature Maintenance - If the room temperature is within the target temperature minus the DIFF
setting, the irst stage heat pump will turn on. If the target temperature is not reached within 15 minutes, the
PG 20
second stage of heat pump will turn on and join the irst stage to reach the target.
Target Temperature Recovery - If the room temperature is beyond the new target temperature minus the
DIFF setting, the irst stage will turn on. Ten seconds later, the second stage will turn on and join the irst stage
to reach the target temperature.
With FAST recovery, both stages stay on until the new target temperature is reached. With ECON recovery,
both stages stay on until the DIFF setting is reached. Then the second stage shuts off and the irst stage stays
on until the new target temperature is reached.
Staging for Heat Pump with 1 or 2 stages of compression and 1 or 2 stages of auxiliary heat
Target Temperature Maintenance - If the room temperature is within the target temperature minus the DIFF
setting, the auxiliary heat will not be used, just the heat pump (1 or 2 stages) as explained above in “target
temperature maintenance”.
Target Temperature Recovery - If the room temperature is beyond the new target minus the DIFF setting,
the irst stage of heat pump will turn on, ten seconds later the second stage of heat pump will turn on, ten
seconds later the irst stage of auxiliary heat will turn on. If the new target temperature is then not reached after
15 minutes, the second stage of auxiliary heat will turn on. If the new target temperature is not reached 15
minutes after that, the third stage of auxiliary heat will turn on.
With FAST recovery all stages will stay on until the new target temperature is reached. With ECON recovery
all stages will stay on until the DIFF setting is reached. Then only the heat pump stays on until the new target
temperature is reached.
ELECTRIC vs. GAS or OIL auxiliary heat - With electric auxiliary heat, the heat pump stays on while the
auxiliary heat is on. With gas or oil auxiliary heat, the heat pump will shut off while the auxiliary heat is on. This
is required by heat pump design.