ITR POLAR HD, Installation And Operating Manual

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Section 5, Installing Fan Heaters
International Thermal Research 5-3
Multiple Zone Heating
The POLAR™ HD Heating Module can supply heat up to five
interior zones using the Distribution Module (Optional).
Refer to Section 9 – Installing Distribution Module.
Up to five thermostats (positive DC compatible) can be
installed to allow temperature regulation of the zones. The
thermostat controls the fan heater.
For larger installations, consult ITR.
Accessories and Components Needed
In addition to the fans themselves, you will need at least
some of the following optional accessories and equipment
which are not supplied but which can be purchased
separately.
• Thermostats — thermostats can be installed in the
interior.
• Air Outlet Vents — covers that are installed flush
with the wall to vent heat for the installed heater unit.
• Fan Guards — to protect the fan blades from
damage, recommended for fans installed in storage
areas or other accessible areas where something could
contact the fans.
• Screws — #10 sheet metal screws or wood screws to
mount the fan units. See Figure 5-2: Mounting a
Spacesaver Fan.
• Two-Speed Fan Switches – to enable low and high-
speed settings from inside the vehicle; for use with the
ITR Cabin heater and Spacesaver fan.
• Three-Speed Fan Switches — to enable low,
medium and high-speed settings from inside the
vehicle; for use with the ITR defrost heater.
• Air Ducting — to allow you to install fans in a remote
location (i.e. not directly adjacent to the interior space
to be heated) and duct the heated air to its output
location. Also, air outlet plates to allow you to
install ducting for one, two or three separate outlets