Med Touch Series LCD Alarm Systems
Powerex
•
150 Production Drive
•
Harrison, OH 45030
•
USA
P 1.888.769.7979
•
F 513.367.3125
•
www.powerexinc.com
IN597400AV
•
08/2016
Page 7 of 56
Route wires through the power supply conduit installed in the
bottom and left side of the rough-in box. Connect the 120 or 240 VAC
facility emergency power source electrical wiring to the terminal strip
provided on the lower left side of the box. (N = neutral, L = Line (hot),
FG = field ground).
The wiring harness will be provided pre-wired to the power supply.
If by chance you are replacing a wiring harness, 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.
Plumbing the Riser Extension Tubes
Install the risers in the top of the
back box as shown.
After removing the protective
plastic caps, connect the riser
extension tubes to the gas piping
system per NFPA 99. Make sure
the 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. (Per NFPA 99 Chapt 5 a
nitrogen purge is required). 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 riser extension tube to the ceiling for a future or
blank gas display even though a transducer is not being installed. Cap
the unused tube above the ceiling. This will simplify future expansion.
AU89xx series riser extension tubes are sold separately.
NOTE:
It is also possible to install the transducers remotely (not in
the alarm box). In this type of installation the risers are connected to
the gas piping system up to 5,000 feet away from the alarm panel.
NOTE:
Powerex recommends mounting the transducers either in
the zone valve box (remote) in conjunction with the EZ Backfeed™ and
EZ Find™ products or in the alarm back box – not remotely above the
ceiling. Should a transducer require service, testing or replacement it
is considerably more time consuming to locate and replace or service
transducers remotely located above the ceiling.
Neutral
Line (Hot)
Field Ground
Riser extension tubes
½ inch O.D. tube
