45
HELIX™ Manual
(P/N 26291)
Chapter 3: System Design
Rev A (February 2018)
HELIX™ PCU
Fire Suppression System
3.6.4 Manual Pull Circuit Design
Manual Pull Stations are remotely located devices used to manually activate the STRIKE ECS in the
event that a fire condition is witnessed. Manual Pull Stations may be installed in the dedicated
manual pull circuit for complete system actuation. Multiple Manual Pull Stations may be used and
can be connected in series. The dedicated manual pull circuit is limited to 100 feet (30.5 m). An
EOL (P/N 23474) is always required at the end of the circuit.
Detection devices may NOT be
used in the dedicated manual pull circuit.
Manual Pull Stations must be installed indoors and no higher than 48 inches (1.21 m) from the floor
and must be located along a path of egress. Consult the local AHJ for final approval, for quantity,
locations, mounting heights and all other considerations prior to installing all Manual Pull Stations.
An example of a single Manual Pull Station installed in the dedicated manual pull circuit is shown
below (See Figure 3.6.4a). An example of the same circuit with multiple Manual Pull Stations
connected in series is also shown (See Figure 3.6.4b).
Note: For outdoor applications, all
STRIKE lead and extension cables must be located within an enclosure or must be routed
through approved outdoor electrical conduit as protection.
C#*
=
CONNECTION LOCATION
(FOR PRE
-
TERMINATED CONNECTORS
IN SEQUENTIAL ORDER)
C2*
C3*
C4*
C1*
C2*
C1*
EOL
(P/N 23474)
STRIKE CONTROL
UNIT (P/N
23826)
MANUAL PULL
STATION
(P/N 24168 or 24290)
MANUAL PULL
STATION
(P/N 24168 or 24290)
Figure 3.6.4a
STRIKE CONTROL
UNIT (P/N 23826
)
Figure 3.6.4b
EOL
(P/N
23474)
MANUAL PULL LEAD
CABLE
(P/N 24412
-
XX)
MANUAL PULL
EXTENSION CABLE
(P/N 24413
-
XX)
MANUAL PULL LEAD
CABLE
(P/N 24412
-
XX)