Pilot Operating Handbook
Cavalon
SECTION 7
SYSTEM DESCRIPTION
AutoGyro_POH_Cavalon 915iS
Revision 1.0 – Issue Date 08.MAY.2019
7-9
energy, and is recommended to be left OFF (or at least reduced to heat setting (I)), once the
cabin heater and cabin is up to temperature (around 5 minutes).
Note that the seat heating elements will only work when the LOW VOLT warning LED is
OFF, being automatically disconnected when the voltage falls below the LOW VOLT relay
threshold
Warning! High electrical load in flight with low engine rpm may reduce the ability of the
charging circuit to replenish the battery, thereby reducing the battery reserve in the event of
a charging circuit failure. Illumination of the LOW VOLT warning lamp lights demonstrates
that the electrical system voltage has dropped below 12v, and, provided the charging circuit
is working, that the electrical demand has exceeded supply. If lit, or intermittently lit, either
reduce the electrical load or increase generator circuit output by increasing the engine rpm,
as safe or appropriate to do, such that the lamp remains off.’
The aircraft is optionally fitted with a cabin heater. This comprises a small radiator, mounted
behind the instrument panel. The radiator is heated with water from the engine cooling
circuit.
The water flow is controlled by a valve mounted in the central console, adjusted by a lever.
The fan is activated by the ‘VENT’ switch in the right side instrument panel.
The power consumption of individual equipment is listed in the following table:
GEN1 is not listed because it only supplies engine systems.
Equipment / System
Power load
Internal generator (Gen2)
(-) 420 W
External generator (Gen3)
(-) 600W
Pneumatic compressor
124 W (peak) / 103 W
Digital ALT and ASI
6 W / (20 W when charging
backup batt.)
Engine cooling fan
194 W (peak) / 97 W
Cabin heat blower fan
32 W
Heated seats
148W (peak)
Nav/Strobe lights (LED)
102 W (peak) / 34 W
Anti-collison lights (Option)
100W (peak) / 20W
Nose (taxi/landing) lights (LED)
10 W
Underbody landing light
113 W
Pitot tube heater
19W
Radio ATR833
7 W (rcv ) / 35 W (xmt)
ATC Transponder TRT800H
max. 10 W
Aspen EFD1000 PFD
(has an independent 30min battery reserve)
65 W
iPad (used as GPS)
35 W
Instrument lighting
25 W
Cabin light
1.5 W
Clock
1.4 W
12V Accessory socket
Max 67 W
Optional Pneumatics box heater pads
(automatically on if box temperature below -
10degC)
max 20 W
