International Thermal Research CO105D, Operator'S Manual

Page: 23 / 55

3.16 REMOTE PANEL
The remote panel controls the heater’s operation. It has a combination ON / OFF -
RESET switch, a LED digital diagnostic display and 10 second signal horn, which
indicates system faults or shut-down. Check the diagnostic codes for the reason. By
turning the switch OFF, then ON again, it resets the fault. The remote indicator panel is
connected to the control box using the 25’ (7.6m.) telephone type cable supplied.
The heater’s electronic control system will automatically purge or cool the combustion chamber
when the service switch, remote switch, or room thermostat is turned off. This will not occur if
the power supply is disconnected which will cause severe damage to the heater.
3.17
THERMOSTAT WIRING
Terminals for four zone thermostats, circulating pump, and four cabin fan heater hookups are located
inside the main electronic control box. There is an additional hookup for a switch and/or an aquastat
from your domestic water heater and engine heat exchanger (see page 3-13). You are restricted to a
maximum 10 amp total for fan heaters unless a relay is installed, with separate power, to switch larger
loads.
The optional additional 4 zone control board (part # 2014) can be field wired. See Fig. 3-1, page 3-7.
The 4 zone board allows for an additional 4 thermostats, controlling up to a maximum load of 10 amps
in total.
3.18 FAN HEATER WIRING
Each of the thermostat zones mentioned above controls the corresponding fan heater hookup terminals.
Once the number of fan heaters are established, the total amperage draw will determine the size of wire
and the fuse used on the main control board. See Fig. 3-1, page 3-7.
NOTE: Fan heaters wired with the built in aquastat will only activate once the heater exceeds a water
temperature of 120°F. This prevents fan heaters from blowing cold air causing drafts.
3.19 WATER SYSTEM
The HURRICANE heater heats your boat or vehicle by circulating hot water through the heating
system (unrelated to your separate domestic hot water tank).
If you use more than the maximum number of cabin fan heaters to heat your boat (depending on the
heater model), you may get poor results. Fans located directly after the heater will starve the system,
not allowing heat to reach the fans downstream. A supply and return manifold each with 2 or 3 series
loops can be used to more evenly distribute heat throughout.