Onity HT22, User Manual

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Setting Up the System - 138
Power Requirements
Each HT22 encoder must have an electrical outlet to
plug into. A power adapter/transformer,12VDC output,
is supplied with the each HT22 encoder. It is preferable
to plug this transformer into a power strip surge
protector.
PMS Interface Requirements
As stated above, if the system is to be interfaced with
the PMS, the maximum cable distance for this
connection is 50-ft. If you require greater than a 50-ft
cable distance, special equipment is needed. Contact
you project coordinator if this is the case. This cable is
also provided as part of the purchase of the system.
Running the Cables
Depending on how your system is set up, you may or
may not need to hire a cable contractor to run your
cables.
The cables supplied with your system are shielded, but
we recommend that you take care not to run the cables
across florescent light fixtures, and not to run them in
conduit with or parallel to wires carrying A/C voltage.
If you hire a cable contractor to run the cables, and the
contractor is supplying the cables, have them run
Belden 83652 or equivalent cable. The ends should be
terminated with DB9 Male connectors, with pins 2 and
3 connected in a straight-through configuration for the
HTCOM network (the network of HT22 encoders).
The cable used for the PMS interface is different. You
should use the one supplied by Onity or your PMS
company. If the cable run is greater than 50 feet, you
will need special equipment and you should contact
your project coordinator.
Connecting the Equipment
All external connections to the HT22 are made through
connectors on the rear panel. The power switch for the