V A L A V I O N I C S L T D
N A V 2 0 0 0 N A V I G A T I O N R E C E I V E R
I N S T A L L A T I O N A N D O P E R A T O R ’ S M A N U A L
Release issue
Page 8 of 29
Oct. 2013
2.3.3
Wire Harness Fabrication
Val Avionics Ltd. recommends that a factory fabricated wire harness (VPN 0751020) be used for the
installation of the NAV 2000
Navigation
receiver
. Use of the factory fabricated wire harness will ensure proper operation of the NAV 2000,
reduction in the occurrence of interfering signals and ground loops, greatly reduced installation time, and
provide prolonged trouble-free performance of your new equipment. Contact Val Avionics Ltd. or your
local avionics distribution center for NAV 2000 Wire Harness ordering information.
Although strongly recommended, it is not required to use the factory fabricated wire harness when
installing the NAV 2000. A wiring harness can be fabricated in the field. Refer to appendix B of this
manual for a complete wiring diagram. The NAV 2000 is connected to the aircrafts avionics bus via a 2
AMP circuit breaker. All wires must be 22 AWG MIL-SPEC, unless otherwise noted in accordance with
current regulations. Two and three conductor shielded MIL-C-27500 or equivalent wire must be used
where indicated. Use AMP Contact Crimping Tool (AMP P/N 601966-1) with Positioning Tool (AMP P/N
601699-5) or equivalent to ensure good quality contacts. Refer to FAA Advisory Circular AC 43.13-2A for
acceptable practices and techniques.
2.3.4
NAV 2000 Installation
2.3.4.1
Mounting
The NAV 2000 is rigidly mounted in the aircrafts avionics stack. Once a location has been selected, a
visual inspection should be made of the area directly behind the panel which will be occupied by the NAV
2000 and harness assembly for obvious obstructions such as heater ducts, control cables, fuel and oil lines
or any other obstruction. Pay particular attention to the control yoke assembly. It should be moved to the
full limit of travel and verified that sufficient clearance exists prior to beginning installation. Most aircraft
instrument panels will already have existing radio mounting cutouts. If the location you have selected
requires that a mounting hole be cut, refer to Figure 3: Panel Cut Out on Page 15 for the mounting
template. Mark and cut the mounting holes as required.
Position the unit’s mounting tray in its upright position, and from the rear of the panel. With the unit held in
place, insert the two supplied 6-32 X 1/2” countersunk screws VPN 501053 from the front and tighten as
appropriate. The installing agency must fabricate and attach rear support brackets to the aircraft structure
behind instrument panel as appropriate to support the rear of the NAV 2000.
Then, attach these brackets to
the provided attachment points on the rear of the unit with the supplied 6-32 1/4" truss head screws VPN
501063.
2.3.4.2
Antennas
One antenna is required for the NAV 2000 installation. A standard VOR/Localizer/Glide Slope antenna can
be used with the unit such as a COMANT CI-157 or equivalent. The most common location for the antenna
is on top of the vertical stabilizer. The VOR/Localizer/Glide Slope antenna can be coupled to the unit’s
NAV-in port directly.
