ComNav Commander P2 & P2VS Installation & Operation Installation
Document PN 29010074 V4.1 - 47 -
Control Head
The P Series Control Head is normally mounted in the boat’s wheelhouse. It can also be
mounted in more exposed locations, such as on a flying bridge, since it is fully splash-proof
(but note that it is not submersible).
Each Head is supplied (when ordered as part of P Series System Kits) with three mounting
kits: one for bracket mounting, one for surface mounting, and one for flush-mounting. The
flush-mount is meant to be used when the Head is installed inside the boat; the bracket &
surface mounts can be used inside or outside.
Each kit is packaged in a separate bag. Complete instructions, including drilling/cutting
templates for each type of mounting, are contained within the bag for each kit.
There is a fourth bag (PN 30110005) containing a number of screws, washers, and nuts. The
fasteners in this bag are to be used with either the surface mount kit or the flush-mount kit.
They are not used for bracket-mount installations.
A slide-on, friction-fit cover is also supplied, for use with either the bracket or surface mounts.
Despite that, the Control Head should not be located where it is exposed to prolonged direct
sunlight.
The Control Head comes with a 7.6 metre (25’) detachable cable. The cable has a 9-pin
circular connector on one end, flying leads on the other end, and a loose plug that the leads
will be wired into after the cable is routed; the plug mates with a matching connector on the
SPU. The cable and Head-end connector are fully waterproof.
Electrical Connection
Route the Control Head Cable to where the SPU will be located. Avoid running the cable
parallel to antenna cables, AC power, or DC wires/cables carrying heavy current. Excess
Control head Cable can be coiled up, or the cable can be trimmed to a suitable length.
See
Control Head
on page 64 for details on connecting the cable to the SPU.
Signal Processor Unit
The SPU should be mounted in a clean and dry location inside the boat, and away from heat,
moisture, and water of any kind. It should be somewhere central: between the Control Head,
the main electrical panel, and the rudder drive system. It need not be visible during normal
operation, but it should be located so that there is easy access to it during wiring &
maintenance operations. Typical locations are right next to the electrical panel, at (or under
or above) the Navigation station, or in a dry storage locker in or near the wheelhouse.
The SPU should be mounted far enough away from your boat’s magnetic compass(es) so as
to minimize any electrical/magnetic interference to it (them); a good rule-of-thumb is at least 1
metre (3’) – but see
Compass Safe Distances
on page 206 for specific values, if you do not
have that much space.
The SPU can be mounted vertically on a bulkhead or horizontally on a deck or shelf.
•
If mounted vertically, it should be positioned so that all wires and cables will exit from
the bottom of the SPU (after running sideways, left &/or right as appropriate, from the
SPU connectors under the SPU’s wiring cover).
•
If mounted horizontally, all wires and cables should have a drip loop formed in them.
Each SPU is shipped with a package of four mounting feet and an instruction sheet that
includes dimensions for drilling holes to fasten the feet to the boat.
Electrical Connection
See
Wiring the System
on page 60 for SPU wiring details.
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