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Tri-Tech
Medical Inc.
Alarm Installation
Plumbing the Riser Extension Tubes
The wiring harness will be provided pre-wired to
the power supply. If by chance it is not pre-
wired, the single green ground wire should be
fastened to the screw on the top left corner of the
power supply board. The wiring plug in
connector (which should contain the rest of the
wires), plugs into the connector terminal on the
upper left corner of the power supply board. The
black wire will be on the top.
This is how the power supply should look when
the wiring is completed.
Replace the power supply cover and plaster
cover (to protect the unit while the drywall and
wall covering work are being done) after wiring
is complete
Riser extension tubes
After removing the protective plastic caps, connect the
riser extension tubes (only included if this is an area or
combination alarm) to the gas piping system. Make sure
drop is for the proper gas service. Using a purge gas to
insure cleanliness in the tubes, silver braze the joints.
Do not use soft solder.
Conduct heat away from the
check valves. (A purge kit is required for purge
equipment connection to the system). The 150 psi
standing pressure test of the piping system must be
successfully completed and all pressure removed from
the system before connecting the transducers to the
system.
Attaching transducers without depleting the
150 psi standing pressure first will result in damage
to the transducers!
Note:
It is recommended that gas piping system tubing be connected from the extension tube to the ceiling for
a future or blank gas display even though a transducer is not being installed. Cap the unused tube at the
ceiling. This will simplify future expansion.
Note:
It is also possible to install the transducers remotely (not in the alarm box). In this type of installation
the riser extension tubes should be removed from the alarm back box and connected to gas piping system at a
distance not to exceed 100 feet (wiring harness length) from the alarm back box. Belden 8777shielded cable is
required.
Note:
Tri-Tech Medical recommends mounting the transducers in the alarm back box –
not
remotely. Should
a transducer require service or replacement is considerably more time consuming to locate and replace or
service remotely located transducers.
