Powerex • 150 Production Drive • Harrison, OH 45030 • USA
P 1.888.769.7979 • F 513.367.3125 • www.powerexinc.com
IN599102AV • 15 September 2020
Page 6 of 36
FirstCall™ Medical Gas Alarm
Operating & Maintenance Manual
Installation
Unpacking Guide
Rough-in box electrical component guide
Rough-in box contains power supply, circuit breaker,
terminal blocks, input expansions and holes for main
line power connection and riser connections.
Cover with PLC+HMI
PLC+HMI is attached to cover and shipped unattached
from the rough-in box. Cover should only be attached
after wall construction is complete.
Riser Guide (Area & Combo Alarm only)
Risers are type L copper tubing with lead free
brass fitting. Risers require gas specific DISS fitting
with demand valve to be installed prior to installing
transducers. Risers are included standard with all area
and combination alarm panels.
Transducer Guide (Area & Combo Alarm only)
Transducers are unique to each gas. Each transducer
is labeled appropriate gas and has the corresponding
DISS hex nut attached to the sensing end. Transducers
have a solid brass body with ½” NPS threads on cord
end for easy remote installation.
Medical Gas
Part Number
Oxygen
TDCR-O2
Medical Air
TDCR-AIR
Medical Vacuum
TDCR-VAC
Nitrous Oxide
TDCR-N2O
Nitrogen
TDCR-N2
Carbon Dioxide
TDCR-CO2
WAGD
TDCR-WAGD
Instrument Air
TDCR-INST
Rough-in Install
Rough-in box is shipped with dust cover installed.
Dust cover will need to be removed to install the rough-
in box and make electrical connections. The dust
cover should re-installed after the main line electrical
connection is fully connected to protect the electrical
components until the wall covering is complete.
Adjustable depth mounting flanges (right & left)
should be utilized to align the front edge of the rough-
in box to be flush with the drywall surface.
Fasten the box to vertical supports (wall studs) so
that the center of the alarm panel is at appropriate use
height.
NOTE:
Rough-in box should be installed with
open side facing the outside of the wall and the hinge
attachment point at the bottom of the panel.
Reinstall cardboard dust cover.
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