Section 5, Installing Fan Heaters

The thermostat should not be mounted on walls outside of the zone because that could cause false temperature readings. Mount on interior walls and bulkheads, away from windows, heater vents and cabin fan heaters.

5.5Procedure

After choosing the appropriate mounting location and configuration:

1Mount the fan using #10 sheet metal screws or wood screws, see Figure 5-2: Mounting a Spacesaver Fan.

2If you are using ducting and a dual air outlet plate for any fan, limit the total length of duct for both outlets to 36” for optimum air output.

3Select the appropriate mounting location for the thermostat, as well as any fan speed switches. You will wire these up to the Zone Control Board in Section 9 – Installing the Distribution Module.

4The zone control board can control up to 5 zones. The cabin fan 1 lead (orange) can supply up to a maximum of 10 Amps. The other cabin fan leads 2-5 can supply up to a maximum of 5 Amps each. The total current draw is not to exceed 18 Amps for all cabin fan leads.

5If the system requires higher amperage draws, install a separate relay to power the fans. This relay will use the existing fan circuit as a signal and must be wired to a secondary power source (not the heater’s control board). See Figure 5-3: Installing a Relay for Additional Fan Amperage.

6To install plumbing lines to the fans, see Section 7 – Plumbing the System.

International Thermal Research

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