System Sensor Pipe Installation - Manual (Page 7)

User Guide: Aspirating Smoke Detector Pipe Installation
7
Drilling Sample Ports
Each port in a sampling pipe represents a smoke detection
location. Port placement and size are determined using the
PipeIQ software. Sample ports should be measured, marked,
and drilled before the network is installed. To prevent sampling
ports from being blocked by dust and dirt, place ports on the
bottom side of the sampling pipe, not the top side. This ensures
that any falling debris does not clog the sampling ports. This
port positioning should also be followed for voids in the ceiling
or floor.
The following guidelines should be followed when drilling the
sample ports in the pipe network.
• Ports must be drilled perpendicular (90 degrees) to the
pipe. If the drill is not held perpendicular, the port is not
round and not modeled properly in PipeIQ.
• Tapering the ports reduces dust collection at the
sample ports.
• Sampling ports must be drilled exactly at the positions
marked on the pipe with the exact size as determined by
the PipeIQ software.
• Ports must not be drilled through both sides of the pipe.
• Ports should be drilled with a slow speed drill with a sharp
drill bit. This minimizes dust and burrs entering the
pipe network.
It is good practice to blow compressed air through the pipe
after drilling to clear any debris before final connection to the
FAAST detector. Alternately, a shop vacuum can be used to
remove debris from the pipe network. Ensure that the pipe is
disconnected from the FAAST detector when vacuuming pipe.
Installation Stages
Table 3 lists the standard installation stages for an aspiration
pipe network.
STEP ACTION
1 Verify design documents are accurate and obtain the size
and configuration of the pipes in the network.
Note: If PipeIQ was used to design the network, a bill of
materials can be generated from the application.
2 Mark off the area where the system is to be installed and
identify the location where the FAAST detector is to be
mounted.
3 Select and mark the locations for the pipe clips in
accordance with the design.
4 Install the FAAST detector in its permanent location.
(See Installation and Maintenance Guide for details.)
5 Mount the pipe clips according to the previous markings.
6 Dry mount and assemble the pipe network according
to the pipe network design documents. CAUTION: Do not
permanently connect the pipes at this time.
7 Measure and mark the sampling ports on the pipe
network. Make sure that the spacing of the sampling
ports is in accordance with the network design. Based
upon the application, ensure that the sampling ports are
at the correct orientation to the air flow, as recommended
in the section on network pipe design.
8 Modify the design documents to agree with the actual
network, if the physical network is different from the origi-
nal design, this new layout should be re-designed and
confirmed in PipeIQ prior to drilling sampling ports.
9 Verify the sampling port positions and orientations and
drill the sampling ports.
10 Drill and install end caps on all appropriate pipe ends.
11 When testing is complete and the system performance is
verified, permanently bond the pipe network together.
CAUTION: Never bond the pipes to the detector. The
detector inlet and outlet are tapered to accept the piping
without any bonding and provide an air tight seal.
12 Label all portions of the system according to local codes
and regulations. Pipe and Sampling Port labels are avail-
able – refer to the Accessories section.
13 If additional changes are made, ensure that design
documents are updated accordingly.
Table 3: Installation steps.