13
HELIX™ Manual
(P/N 26291)
Chapter 2: System Components
Rev A (February 2018)
HELIX™
PCU Fire Suppression System
2.5.2 Electric Nitrogen Actuator (P/N 20775
-
R)
The Electric Nitrogen Actuator is used to release nitrogen gas pressure from a
Nitrogen Cylinder to pneumatically activate a control head through a Pneumatic
Actuation Network. The body of the Electric Nitrogen Actuator is constructed of
chrome plated brass and contains a stainless steel puncture point and a 1/4”
NPT female port to connect to the Pneumatic Actuation Network. A brass
adapter is threaded into the top that accepts a Linear Actuator (P/N 20500
-
R).
The Electric Nitrogen Actuator is supplied with two 1/4”
-
20 stainless steel cap
screws for securing the assembly to an Actuator Bracket. See Section 4.5 for
installation instructions.
2.5.3 Nitrogen Cylinder (P/N 09956
-
R)
The Nitrogen Cylinder supplies nitrogen gas pressure to a control head through
the Pneumatic Actuation Network to open the Agent Cylinder Valve. The
Nitrogen Cylinder is charged to 1800 psi (12410 kPa) at 70°F (21°C). A pressure
gauge is used to identify proper charge pressure of the Nitrogen Cylinder and is
located on the bottom of the Nitrogen Cylinder. The pressure gauge is protected
by an impact resistant plastic gauge guard. The Nitrogen Cylinder is shipped
fully charged from the AMEREX factory with a protective shipping cap installed
on the outlet
threads. The cap must be removed at installation but must
remain
in place at all other times. Retain the shipping cap to reuse when recharging a
Nitrogen Cylinder. Construction of the Nitrogen Cylinder is per DOT 3E. The
cylinder is rechargeable by certified AMEREX installers and does not require
periodic hydro testing. See Section 4.5 for installation instructions.
2.5.4 Actuator Bracket (P/N 10355
-
R)
The Electric Nitrogen Actuator and Nitrogen Cylinder can be
mounted to a surface with use of an Indoor Actuator Bracket (P/N
10355
-
R). The bracket is constructed of steel and painted to
inhibit corrosion. See Section 4.5 for installation instructions.
INDOOR ACTUATOR
BRACKET (P/N 10355
-
R)
Figure 2.5.4
Figure 2.5.2
Figure 2.5.3
SHIPPING CAP