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 8 of 36
FirstCall™ Medical Gas Alarm
Operating & Maintenance Manual
Low Voltage Wiring
Wire Type and Size
All low voltage wiring must meet the following
requirements:
• Stranded wire no smaller than 22 AWG, conductor
insulation at least .010in.
• Circuit length not to exceed the following lengths
for the indicated wiring gauges:
•
Up to 5000 feet: 18 AWG
•
Up to 3200 feet: 20 AWG
•
Up to 2000 feet: 22 AWG
• Cable must be twisted pair shielded type. Multi-
pair cables within one common shield are
acceptable.
Sensor wiring (Area & Combo Alarm only)
For personal safety, lock out and tag
out the associated circuit breaker
disconnect for the source of 120V AC power.
Attention:
Pour votre sécurité personnelle, verrouillez et étiquetez le
sectionneur du disjoncteur associé pour la source
d’alimentation de 120 V CA.
For personal safety and to avoid
damage to the alarm, ensure that the
circuit breaker is in the OFF position.
Attention: Pour
votre sécurité personnelle et pour éviter d’endommager
l’alarme, assurez-vous que le disjoncteur est en position
OFF.
Install the sensor wires into the appropriate terminal
block. There are enough terminal blocks for up to 8
gases. Install the sensors in the order they are to be
displayed on the screen.
The terminal blocks are push-in style with a release
button. A small flat-head screwdriver (or similar tool)
should be used to depress the release button to make
wire insertion easier.
It is important that the sensors are wired to the
correct terminal block. Per NFPA 99, an alarm will sound
for cross-connected sensors.
Source alarm signal wiring (Master & Combo Alarm
only)
Install the input wires from the source equipment
into the appropriate terminal blocks.
Front Panel Assembly
Front cover assembly with HMI+PLC combination
screen is shipped unattached to the rough-in box
assembly. Front cover is attached using hinge on lower
inside flange of rough-in box.
Remove dust cover from rough-in box and discard.
Attach front cover by placing threaded studs on lower
flange of cover through the provided hinge holes. Place
provided hex nuts over studs and tighten.
Summary of Contents for AAP10-OAV
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