Oasis Concepts Diesel and AC Heating System for Recreational Vehicles and Yachts - Manual (Page 37)

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.
5.5 Procedure
After choosing the appropriate mounting location and
configuration:
1 Mount the fan using #10 sheet metal screws or wood
screws, see Figure 5-2: Mounting a Spacesaver Fan.
2 If 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.
3 Select 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.
4 The 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.
5 If 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.
6 To install plumbing lines to the fans, see Section 7 –
Plumbing the System.
International Thermal Research 5-5