The Firex low-profile Surface Mount Pattress with Relay
Model PATR is required for surface mount installation of
Firex smoke alarm models GC240, I240C, PG240,
PAD240. DO NOT use the PATR with any other smoke
alarm models except as specified above. The pattress
also allows connection to an auxiliary device (horn, door
closer, light, etc.) through a relay control.
Disconnect mains power prior to
starting installation.
1. Locate the most appropriate site for mounting the pat-
tress and smoke alarm. See the User's Manual supplied
with your Firex smoke alarm for detailed siting informa-
tion.
NOTE: Model PATR has several mounting plate holes to fit
many applications. These include holes for attaching to stan-
dard electrical boxes or direct to a ceiling or wall.
2. Determine the closest electrical cable knock-out for the site.
a. If your application requires surface mounting electri-
cal cable, mark the best raceway knock-out for your
application.
b. If mounting directly to wallboard, mark the mounting
hole locations and drill one (1) hole at each mark.
3. Using a sharp knife, remove appropriate cable knock-out.
For surface mounting, use pliers to remove appropriate
raceway knock-out(s).
4. Route mains power supply wires through cable knock-out
or through raceway knock-out.
5. For wall or ceiling siting, insert screw plugs (furnished
with smoke alarm) into the drilled holes. Attach pattress
to the wall or electrical box at mounting holes with two
screws (furnished).
6. Fix green Earth wire from mains supply to AC MAINS "E"
screw terminal on pattress board.
7. Fix line (or brown) wire from mains supply to AC MAINS
"L" screw terminal on pattress board.
8. Fix neutral (or blue)
wire from mains sup-
ply to AC MAINS "N"
screw terminal on pat-
tress board.
9. Fix auxiliary device
wires to appropriate
screw terminals on
RELAY screw termi-
nals. Follow manu-
facturer’s directions
for wiring auxiliary device to pattress.
NOTE: The relay contacts are non-latching. The relay can be
modified to pulse the output. To do so, cut the “JUMPER”
wire on the pattress board. (See diagram above.)
10. Fix smoke alarm connector wires to appropriate screw ter-
minals on the alarm terminal block of the pattress board.
Follow directions outlined in the smoke alarm User's
Manual (enclosed).
11. Attach mounting plate to pattress by threading two screws
(supplied with pattress) into smoke alarm mounting bracket
receptors. The smoke alarm can be mounted only one way.
Be sure tamper-resist tab points over pattress board
as shown above.
12. Fix smoke alarm to mounting plate according to the Smoke
Alarm User's Manual.
13. Restore mains power supply.
14. Test unit as outlined in the Smoke Alarm User's Manual to
be sure it is functioning properly.
Sales and Technical Enquiries to:
Sensotec Europe Limited
Technical Services Department
Unit Seven
Bala Industrial Estate
Gwynedd
LL23 7NL
U.K. 110-516
Installation Manual
Surface Mount Pattress
with Relay
Model PATR
CAUTION
!
