Installation Guide

THERMOFILM® – The complete underfloor heating solution for all wood & laminate floors.
Thermosoft International Corporation Installation Manual: ThermoFilm®
Page 9
PREPARING THE THERMOSTAT
Thermostat
The THERMOFILM thermostat should be
positioned (fig.1) at a height approximately 5ft
from the floor in an area free from drafts, out of
direct sunlight and close to the electrical supply.
All THERMOFILM thermostats have a floor sensor
which can be placed in an optional protective
plastic conduit and positioned centrally below
one of the heating elements at a distance of
approximately 20” from the wall. A single gang
flush fitting box will be required for the
thermostat. A double-gang 4” box or a separate
junction box is recommended to provide more
room for connections.
Junction Box Installation
A junction box (fig.1), preferably 2-gang x
minimum 1” deep) is required for connecting the
THERMOFILM heating element 15ft long
connection leads. It should be located close to the
thermostat and in a position to enable all the
connection leads and the thermostat sensor
conduit to reach the box comfortably.
Floor Sensor Installation
Cut a channel in the underlayment pad or thermal
insulation for the sensor or optionally - cut a 0.5”
wide by 0.25” deep channel in the subfloor (fig.2)
to accommodate a sensor conduit so that top of
the conduit will be level with the underlayment
pad or thermal insulation surface when installed
(see fig. 2). Tape over the end of the conduit
using a small piece of duct tape. Place the conduit
in the channel and feed the end into the junction
box. The conduit can now be cut to length leaving
approximately 2” inside the junction box. Slide
the sensor into the conduit until the sensor bulb
reaches the taped end. Wrap a piece of tape
around the conduit and sensor cable to prevent
the sensor being accidentally pulled out. Use duct
tape to hold the conduit in place in the channel.