Ouellet OWC-M - Manual (Page 22)

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5. Control device
The OWC-M heating cable system must be controlled with an adequate temperature regulator depending on
the type of system selected: floor control mode or ambient control with floor limit mode.
5.1 Installation for floor control mode
We recommend using an electronic floor temperature control device with a temperature sensor so the thermal
gain never exceeds the maximum temperature allowed for the type of floor covering selected.
Control device
recommended: Electromechanical thermostat with floor mode (F) and temperature sensor.
5.2 Installation for ambient control with floor limit mode
The thermal control device is an ambient thermostat. Because the thermostat reacts to ambient temperatures
and not floor temperature, the floor covering must be selected according to a higher tolerance level. The
ambient thermostat or temperature sensor should never be installed where sun rays are prevalent or in an area
subject to drafts.
Control device recommended: Electromechanical thermostat with ambient mode (AF)
and temperature sensor.
Note : Ouellet Canada Inc. highly recommends connecting the concrete cable system to a ground fault circuit-
breaker/detector (GFCI), built-into the control device or directly integrated into the circuit-breaker.
5.3 List of control devices
The following is a list of control devices (sold separately) recommended for OWC-M concrete heating cable
systems:
240/208V OWC-M0300 to OWC-M3400
Total current: 15 A and less (no relay):
Non-programmable electromechanical thermostat – series OTH770 with temperature sensor
and GFCI 15 A @ 120/208/240V.
Programmable electromechanical thermostat – series TH115-AF with temperature sensor
and GFCI 15 A @ 120/208/240V.
Total current: 15A to 22A (with 1 relay):
Non-programmable electronic master thermostat, low voltage, 12 VDC – OTH700-AF-12VDC
with temperature sensor
AND
Slave module – series CT230, with GFCI - 15A @ 120/208/240V OR
Programmable electronic master thermostat, low voltage, 12 VDC, TH115-AF-12VDC
with temperature sensor
AND
Slave module - series CT230 with GFCI - 15A @ 120/208/240V OR
Non-programmable electronic thermostat – low voltage, series OTH824 with temperature sensor
and without GFCI
AND
On/Off relays with transformer RC840T-240 - 22A @ 208/240V OR
TRIAC relays with transformer RT850T-240 - 23A @ 208/240V
Total current 22A and more (with 2 or more relays):
Non-programmable electronic thermostat – low voltage, series OTH824 with floor relay and without GFCI
AND
On/Off relays without transformer RC840 - 22A @ 120/208/240V OR
TRIAC relays without transformer RT850 - 23A @ 120/208/240V/347