DOC-FW562-UM-R1.0
INSTALLATION MANUAL
© 2021. MAPLE ARMOR FIRE ALARM DEVICE CO., LTD.
8866, boulevard du Quartier, Brossard, Quebec, Canada, J4Y 0R2
All rights reserved. www.maplearmor.com
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Sampling tubes selection
Note: To fit different duct widths, 12, 18, 24, 36, 42
inches length sampling tubes are optional. If you
need a longer length, you can combine shorter
ones with the tube connector.
Model
Description
FW561-ST-12
12 inch
’s Air Sampling Inlet Tube
FW561-ST-18
18 inch
’s Air Sampling Inlet Tube
FW561-ST-24
24 inch
’s Air Sampling Inlet Tube
FW561-ST-36
36 inch
’s Air Sampling Inlet Tube
FW561-ST-42
42 inch
’s Air Sampling Inlet Tube
Pre-Installation
IMPORTANT: Technicians will have to be
certified by Maple Armor on the installation of
the Maple Armor duct detector before they
can verify & certify them.
Step 1
We recommend that the duct detector assembly be
installed 6 duct widths from any bends or inlets. This
is to maximize the sensor efficacy. There will be less
air turbulence and if smoke is present, the air and
smoke will be better mixed. See Figure 1
Figure 1
Step 2
The duct detector assembly must be installed on the
supply side of the air handling unit.
Step 3
Located assembly upstream of air humidifiers and
cooling coils.
Step 4
A duct detector can be mounted on a round duct
detector, as long as the diameter is 12 inches or
more.
Step 5
If possible try to install the duct detector in an
accessible location.
Step 6
If the duct detector is hidden in a ceiling, you will
need to install a remote indicating light in the ceiling
under the detector to show the location.
Step 7
It can be installed horizontally on a duct as
narrow as 6 inches and vertically on a duct as
wide as 16 inches.
Step 8
For more help on model FW562C you can consult
CAN/ULC-S524-06 section 5.8 & Figure 24 & 25;
for model FW562 you can consult NFPA 90A.
To install the duct detector:
1.
Tape the template to the duct housing and drill
(or punch) the mounting holes at the desired
mounting location as indicated in Figure 2.
Figure 2 Mounting Hole Illustration
2.
Slide the sampling tube into the duct detector
housing assembly. Note: The sampling tube
must be installed with the air inlet holes facing
the airflow, check duct housing surface for any
indication of airflow, or ask the HVAC installer.
3.
Mount the duct smoke detector on the HVAC
duct and secure it using four sheet metal screws
provided.
If using 2 lengths of air sampling tube, drill a
1/2-inch hole on the opposite side of the duct
for the tube to pass through and cut the tube so
that approximately one inch of the tube extends
through the duct. Plug the third and fourth
holes using the rubber stopper provided, for
models FW562C-A and FW562-C.
Figure 3 sampling tube installation
The sampling tubes should be supported at both
ends of the duct as shown in figure 4.
