Dynon Avionics Heated AOA/Pitot Probe - Manual (Page 17)

Heater Controller Mounting and Wiring
AOA/Pitot Probe and Heated AOA/Pitot Probe Installation Guide Rev. C 3-3
All wires associated with the Dynon Avionics Heated AOA/Pitot Probe should have
Tefzel insulation (Mil Standard M22759/16). To purchase such wire, specify
M22759/16-xx where xx is the AWG size. For example, M22759/16-10 is 10 AWG
wire with Tefzel insulation. We recommend that all wire used in your airplane
have Tefzel insulation.
The included wires on the Heated AOA/Pitot Probe
and the Heated AOA/Pitot Probe controller are
appropriately sized (18 AWG) for their current
requirements and lengths. It is preferable that the
Heated AOA/Pitot Probe controller be mounted
near enough to the probe that the 5 wires
between the Probe and the controller can be
connected without adding extension wiring
between the two units. Route all wiring through
the aircraft such that there are no spots where it
could chafe or break. Use appropriate strain relief
at all junctions between wires and connectors. Secure all wires at regular intervals along wiring
runs to accommodate vibration effects. Use correctly-sized wire for the length of runs between
the electrical distribution bus, controller, and probe, as shown in the chart to the right.
In the recommended wire gauge chart above, the lengths shown are for the entire
run of wire. Thus, the approximately 3.5’ of wire included as part of the Heated
AOA / Pitot Probe and the controller, should be taken into account. Example – if
an additional 13.5’ of wire is required to connect the controller to aircraft power,
the overall run of wire is 17’, which dictates the use of 12 AWG wire.
WIRING SYSTEM OVERVIEW
The following block diagram depicts the basic layout of the electrical connections between the
probe and controller. This diagram should be used in conjunction with detailed instructions on
the following pages. Read the specific instructions for each connection prior to installation.
Recommended wire gauge for runs,
given 10-amp peak current
Run length Gauge
~3.5' wiring included with units
4’ – 16’ 14 AWG
17’ – 24’ 12 AWG
25’ – 40’ 10 AWG
Based on recommendations in
FAA AC 43.13-1B, page 11-30