Radio thermostat Ct110 User manual

Install Guide CT110

Caution

• 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 24 volt AC HVAC

and millivolt gas systems. The thermostat is powered by 4AA

alkaline batteries and/or 24 volt AC C wire (or a 12-24 AC or

DC source). Each thermostat relay load should be limited to 1.0

amp; higher amperage may cause damage to the thermostat.

• Your thermostat is a precise instrument, handle it with care.

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.

1308-001-001

INSTALLATION

ENGLISH

Temperature

adjust buttons

Z-Wave join

Button

Indicators

LCD screen

MODE

button

Reset

Button

FAN

button

Wall Plate

and

Wall plate frame

Thermostat

PG 2

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 identication.

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.

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 CT110 in place of the old thermostat.

A new location will require moving your wiring.

For new installations and relocating the CT110 - 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 CT110 until all construction and painting has

been completed.

• This thermostat does not require leveling.

Good

5ft.

(1.5m)

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 identication.

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.

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 CT110 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 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 CT110.

• 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.

Caution

Do not allow wires to touch each other or parts on thermostat.

Jumper

wire

RH RC

G A

Wire Terminals

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. Without a C-Wire the

CT110 will operate on batteries

only for about one year.

• Hot water systems diagrams

are on pg20.

• 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, contact

customer support for help.

C W Y RH RC G

5 Wire

Heat/Cool

From

HVAC

YRH

C W Y R G

4 Wire

Heat/Cool

From

HVAC

C W R G

3 Wire

Heat

From

HVAC

From

HVAC

C W R

2 Wire

Heat

WIRES

C Wn Yn R G

Multi-stage Cool

Multi-Stage Heat

From

HVAC

C B or

O AUX

Yn R G

Multi-stage

Heat Pump

Multi-stage

Aux Heat

From

HVAC

AUX n

C B or O Y R G

4 Wire Heat Pump

w/o Aux Heat

From

HVAC

WIRES

Go To Page 17 Go To Page 18

Go To Page 17

Go To Page 15 Go To Page 16 Go To Page 16

Go To Page 15

PG 6

• “Fan out” wires as illustrated with CT110 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 CT110 to t snug to the wall.

• Position the wires through the wall plate to the terminal area.

• Do not bunch wires behind the wall plate. Feed any slack back into

the wall opening.

• The Wall Plate Frame is optional, but you must have it in place when

you thread your wires into the wall plate.

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: You can mount the wall plate to the wall rst, then

connect the wires, and mount the CT110.

• The CT110 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).

CYRH

2.6"

from HVAC

System

wires from HEAT/COOL system

PG 7

Mount the Wall plate to wall NOTE: If you are mounting to sheet

rock or if you are using the old mounting holes, use the plastic anchors

provided. Mark rst and drill a 3/16-in.(4.8mm) hole for the insert at each

screw location, then mount the unit.

1. Hold the CT110 wall plate

against the wall, with the wires

coming through the hole in the

wall plate.

2. Position wall plate for best

appearance.

3. Attach the wall plate to the

wall with the screws provided.

Screw to wall

PG 8

Install 4 AA Batteries

• Install 4 AA alkaline batteries [required] following the marked

polarity in the battery compartments. Put the battery in

negative end rst against the spring, then push the positive

end in.

The CT110 will power-up in the OFF mode. Your CT110 is not

congured to operate your HVAC system yet. You must now

congure your thermostat for your HVAC system before you

mount it to the wall plate.

Caution

Special Thermostat Battery Cautions

Always replace the batteries as soon as the low battery indicator displays. 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 battery indicator display does not display, 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.

+1.5vAA-

PG 9

• 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.bottom.

BATTERY WARNING

Do Not Use Re-chargeable Batteries

Do Not Mix Old And New Batteries.

Do Not Mix different battery types

ie. Alkaline, Standard (Carbon - Zinc), etc.

DO NOT DISPOSE OF BATTERIES IN FIRE. BATTERIES

MAY EXPLODE OR LEAK.

PG 10

Snap CT110 to Wall plate

Snap the CT110 onto the wall plate. Take care to align with mounting posts at top

and the contact pins at the bottom. With CT110 on the wall plate it is time to turn

the AC power back on. Do this at the breaker you used to switch it off.

Test Installation

Follow these procedures to verify you have correctly installed the CT110.

TO CHECK FAN (If you connected the G wire) - Press the fan button to turn the

fan ON. Verify that air is blowing from the system. Touch the fan icon again to

return to AUTO setting.

TO CHECK HEAT - Set the mode to HEAT by pressing the MODE button until HEAT is displayed.

Press the + button and raise the target temp to change target temperature to about 5oF above room

temperature; 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 65oF) - Set the mode to COOL by pressing

the MODE button until COOL is displayed. Press - button and lower cool Target Temperature to change target

temperature to about 5oF below room temperature. Allow the system 5 minutes to respond. Verify that cool air

is blowing from the system. Return mode to OFF by pressing the mode button.

HVAC Setup on Screen

IMPORTANT: Make sure the CT110 is powered up and the mode is set to OFF. You must know what your

heat source is at this time: either Gas/oil heat or Electric heat (or AUX type for heat pumps.)

• Press the + and the - buttons at the same time, for 10 seconds.

This will put you in the HVAC SET UP screen.

• Use +/- buttons to select HVAC SET UP code on screen. You must select the correct HEAT type for your

system. In the upper left, the CT110 will display GAS for gas heat and ELEC for Electric heat for each code.

For HEAT PUMP systems CT110 will display GAS for gas auxiliary and ELEC for Electric auxiliary for each

code (if you have AUX heat).

The LCD display will show your selection. During setup, 2nd stage will blink when both heat and cool have

2nd stages.

If you have a Normal HVAC system...

1 stage HEAT, 1 stage 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

Now double check that you have to select the

correct HEAT TYPE for your system. GAS is for Gas or Oil heat, ELEC is for electric heat.

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

PG 11