Calidus
SYSTEM DESCRIPTION
AutoGyro_POH_Calidus Revision 4.0 – Issue Date 17.JAN.2019 7-30
Primary Fuse box, cover off, normally located above the fuel tank or historically the upper
engine bearer bracket, left side in the engine bay. Each fuse is marked with the rating for
that fuse.
7.22 Cabin heater
The Calidus gyroplane may be equipped with an optional cabin heater system.
Two systems are available;
1. Warmed air intake from the coolant radiator. This simple system uses an
extraction box mounted under the coolant radiator to route warmed air into the
cabin via a stainless steel butterfly valve mounted above the rear seat occupants
right shoulder. The valve is controlled via a push-pull cable mounted in the
instrument panel. There is no adjustment available other than that for the valve
being fully closed when the operating knob is pushed into the panel. This
configuration is no longer manufactured.
2. Hot water heated air. This system utilises the engine coolant routed via PTFE
lined braided hoses through the cabin to the pilots footwell. A radiator and fan is
mounted inside the aircraft nose, through which the coolant runs. The fan pumps
the warmed air into the footwell and area between the inside and outside body,
venting along the body sides into the cabin.
The water flow rate is varied by operating the push/pull cable mounted on the
instrument panel, which connects to a flow valve. The fan may be either turned
on by the initial pull of the push/pull cable, or in later models, by activating the
‘vent’ switch.
Note that the fan is de-activated when the low volt lamp is on.
Additionally there is a small vent in front of the front stick, which is effective in demisting the
screen interior.
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