67
HELIX™ Manual
(P/N 26291)
Chapter 4: System Installation
Rev A (February 2018)
HELIX™ PCU
Fire Suppression System
4.8.2 Actuation Circuits
The STRIKE ECS has two dedicated actuation circuits which support the Linear Actuators used to
actuate the Amerex HELIX Fire Suppression System. Each actuation circuit must support only one
Linear Actuator. The Actuation Lead Cable (P/N 24411
-
XX) is used to connect the Linear Actuator
to the STRIKE Control Unit. All actuation cables and components are color coded yellow for
reference. Each of the two actuation circuits may later be programmed or mapped to be used with
individual detection circuits as desired (See Section 4.10).
Do NOT connect any actuation field
wiring to the
STRIKE
Control Unit until directed to do so in Section 4.9.
The entire actuation circuit must be routed within an electrical conduit or mechanical
protection, from the
STRIKE
Control Unit enclosure to the Agent Cylinder or Electric Nitrogen
Actuator.
3/4” electrical knockouts are provided on each. Each actuation circuit is limited to 100
feet (30.5 m). A Linear Actuator (P/N 24500
-
R) is always installed at the end of each circuit.
For actuation circuit installations (See Figure 4.8.2):
1.
Beginning at the installed Linear Actuator on top of the Electric Control Head or Electric
Nitrogen Actuator, route the blunt cut end of the Actuation Lead Cable (P/N 24411
-
XX) from the
junction box (if required) to and into the STRIKE Control Unit enclosure through the selected
knockout. The entire route must be within electrical conduit for mechanical protection. Any
excess length in the cable should be pulled into the STRIKE Control Unit enclosure and may be
trimmed later.
Do not cut, pinch, crush, or chafe any electrical wiring or connectors
during installation.
2.
Connect the Linear Actuator connector (M) to the lead cable connector (F).
3.
Termination of the Actuation Lead Cable to the STRIKE
Control Unit is performed in Section
4.9.
Ensure the Linear Actuator and associated cable are fully installed and connected
before proceeding to prevent any fault conditions!
Figure 4.8.2
ACTUATION LEAD CABLE
(P/N 24411
-
XX)
LINEAR
ACTUATOR
(P/N 20500
-
R)
STRIKE CONTROL
UNIT
(F)
ROUTING DIRECTION
(M)
PULL LEAD CABLE INTO
STRIKE CONTROL
UNIT
ENCLOSURE THROUGH
SELECTED KNOCKOUT
LOCATION. ANY
EXCESS LENGTH MAY
BE TRIMMED LATER PER
SECTION 4.9.
ELECTRICAL CONDUIT
(
AS REQUIRED)
LEAD CABLE BLUNT CUT END
CONNECT
ELECTRIC CONTROL
HEAD OR ELECTRIC
NITROGEN ACTUATOR
JUNCTION BOX & CONDUIT
(AS REQUIRED)