Honeywell Home CT230-GA User manual

INSTALLATION GUIDE
GUIDE D’INSTALLATION
GUÍA DE INSTALACIÓN
CT230-GA / CT230-GB
LINKED UNIT
UNITÉ ESCLAVE
UNIDAD ENLAZADA
33-00222EFS-04

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CT230-GA / CT230-GB
1
ENGLISH
Read the entire document
CAUTION:
• Installation must be carried out by a certified electrician and must comply with national and
local electrical codes.
• Use the CT230 linked unit for resistive load only.
• Do NOT install the CT230 linked unit in an area where it can be exposed to water or rain.
• To prevent severe shock or electrocution, always turn the power OFF at the service panel
before working with wiring.
• Install the CT230 linked unit onto an electrical box.
• Connect the wires using solderless connectors for copper wires. Use special CO/ALR
solderless connectors for connection to aluminum wires.
• Keep the top and bottom air vents (openings) of the CT230 clean and unobstructed at all
times.
Before you start

Installation Guide
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The CT230 linked unit is designed to be used in a system for large floor heating applications whose
load is too high for a single conventional thermostat. The system consists of a master thermostat
and multiple CT230 linked units (see diagram on the following page). The heating area is divided
into zones of 15 A or less, each zone connected to a CT230 linked unit. The user sets the tempera-
ture and programs the heating schedule on the master thermostat.
• Each CT230 linked unit is powered by line voltage (120 VAC, 208 VAC or 240 VAC) and has its
own ground fault protection mechanism. Up to 10 CT230 linked units can be used in a given
setup.
• The master thermostat (not included) can be a TH114 or TH115 thermostat operating on
12 VDC. The master thermostat is powered by one of the CT230 linked units.
Supplied Parts
• One (1) CT230 linked unit
• Two (2) mounting screws
• Four (4) solderless connectors for copper wires
About the CT230 linked unit

CT230-GA / CT230-GB
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System diagram
Master
thermostat
CT230
Up to 10
zones
Sensor
cable
Heating
cables
(zone 1)
CT230 CT230
Heating
cables
(zone 2)
Heating
cables
(zone 3)

Installation Guide
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Install each CT230 linked unit as follows:
Turn the heating system off at the main electrical panel.
Loosen the bottom screw and remove the CT230 faceplate
from the wallplate. (The screw cannot be completely
removed.)
Connect the wallplate to the load (heating cables) and to the
power supply (see wiring diagram on page 6).
NOTE: The CT230 linked units can operate on different
voltages in the same setup (e.g., 5 units @ 120 V and
5@240V).
Install the wallplate to the electrical box using the provided
screws.
Installing the CT230 linked units
Wall-
Faceplate

CT230-GA / CT230-GB
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If not already done, affix the provided terminal sticker to the
wallplate.
Insert the wires (not included) through one of the two
openings on the wallplate and connect the CT230 linked units
together in a daisy-chain configuration (see connection
diagram on page 7).
Reinstall the faceplate on the wall plate and tighten the screw.
Access the ON/OFF switch by sliding the CT230 door upwards
and place the CT230 linked unit on OFF.
Sticker
Switch
Door

Installation Guide
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NOTE: Connect the wires using the provided solderless connectors for copper wires:
Wiring diagram
120 V
240 V
Load
Black
Red
Red
Black
Red
Red
Black
Power
supply
Load
Black
Red
White
Black
Red
White
Black
Black
Power
supply
Black

CT230-GA / CT230-GB
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Connection diagram
Sensor
CT230
Master
thermostat
NOTE:
• The wire distance between the master thermostat and each CT230 unit must not exceed
500 ft. (150 m). 20-AWG wires are recommended.
• The floor sensor cable must not exceed 200 ft. (60 m).
CT230 CT230
Up to 10 CT230
linked units

Installation Guide
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WARNING: Make sure all CT230 linked units are Off.
Connect the master thermostat to the nearest CT230 linked unit (see connection diagram on
page 7).
WARNING: Only one CT230 linked unit must be used to power the master thermostat.
Connect the floor sensor (included with the TH114-AF-12VDC & TH115-AF-12VDC
thermostat) to the master thermostat (no polarity, see connection diagram on page 7).
• Position the sensor cable such that it does not come in contact with the floor heating wires. The
sensor must be centered between two floor heating wires for best temperature control.
• Do NOT staple the sensor head (the plastic end) to the floor. Doing so might damage the sensor.
Any damage might not be noticeable during testing but can become apparent several days later.
Loosen the bottom screw and remove the faceplate from the wallplate. (The screw cannot be
completely removed.)
Install the wallplate on the wall using the provided screws and wall anchors.
Reinstall the faceplate on the wallplate.
Apply power to heating system and switch each CT230 linked unit and the master thermostat
to On.
Test the ground fault protection on each CT230 linked unit.
Installing the master thermostat