Honeywell CT230-GA User manual

Installation Guide
Guide d’installation
Guía de instalación
CT230-GA / CT230-GB
Linked Unit
Unité esclave
Unidad enlazada 400-230-016-B
400-230-016-B (CT230-GA_GB) 5 x 3.125 EFS.book Page 1 Monday, April 12, 2010 4:26 PM

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CT230-GA / CT230-GB
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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
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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 temperature and programs the heat-
ing schedule on the master thermostat.
• Each CT230 linked unit is powered by line voltage (120 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 (non-included) can be a TH113, TH114, TH115 or TH116 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
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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)
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Install each CT230 linked unit as follows:
nTurn the heating system off at the main electrical panel.
oLoosen the bottom screw and remove the CT230 faceplate from
the wallplate. (The screw cannot be completely removed.)
pConnect 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 @ 240 V).
qInstall the wallplate to the electrical box using the provided
screws.
Installing the CT230 linked units
Wallplate
Faceplate
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CT230-GA / CT230-GB
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rIf not already done, affix the provided terminal sticker to the
wallplate.
sInsert the wires (non-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).
tReinstall the faceplate on the wall plate and tighten the screw.
uAccess the ON/OFF switch by sliding the CT230 door upwards
and place the CT230 linked unit on OFF.
Sticker
Switch
Door
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NOTE: Connect the wires using the provided solderless connectors for copper wires:
Wiring diagram
White
120 V
Load
Power
supply
Red
Black
Red
Red
Black
Black
Red
Black
240 V
Load
Power
supply
Red
Black
Red
Black
Black
Black
White
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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
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WARNING: Make sure all CT230 linked units are Off.
nConnect 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.
oConnect the floor sensor (non-included) 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.
pLoosen the bottom screw and remove the faceplate from the wallplate. (The screw cannot be completely
removed.)
qInstall the wallplate on the wall using the provided screws and wall anchors.
rReinstall the faceplate on the wallplate.
sApply power to heating system and switch each CT230 linked unit and the master thermostat to On.
tTest the ground fault protection on each CT230 linked unit.
Installing the master thermostat
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