Page: 58
FM-200® OPERATION, DESIGN, & SERVICE MANUAL
Revision F
Document # DOC102
Issued: February 1, 2009
Revised: 11-Nov-2011
40YE
Teon tape or joint compound must be used on all threaded connections. Use care when applying pipe tape or
joint compound so they don’t enter the pipe. Do not use pipe tape or compound on ared ttings.
On multiple cylinder systems, the discharge pressure switch must not be connected to the pilot actuation line.
It may be connected to the discharge manifold or the pilot actuation port of the nal slave cylinder.
4.1.6.1 Installation Using Flex Hose
Janus Fire Systems ex hose assemblies may be used to assemble the pilot actuation line as shown in Figures
4.1.6.1a, 4.1.6.1b, and 4.1.6.1c. e appropriate length of ex hose for each cylinder assembly size is shown
in Table 2.3.9. All ttings necessary to complete the pilot actuation line are available from Janus Fire Systems
and are describe in Section 2 of this manual. Any other ttings utilized must be appropriate 1/4" brass 37° JIC
ttings with a minimum pressure rating of 1200 psig (82.7 bar).
e pilot actuation line begins at the pilot actuation port of the primary cylinder and ends at the pneumatic
valve actuator of the last slave cylinder. When utilizing ex hose, the total length of the pilot actuation line
from the primary cylinder to the last slave cylinder (including any rises or drops) cannot be greater than 100
ft (30.48 m).
4.1.6.2 Installation Using Copper Tubing
Copper tubing and appropriate ttings provided by the installer may be used to assemble the pilot actuation
line as shown in Figures 4.1.6.2. Copper tubing must be 1/4" O.D. with a 0.030" wall thickness (meeting
ASTM B280). All ttings utilized must be appropriate brass or steel compression style ttings (with brass or
steel sleeves or ferrules) or SAE 45° flared tube fittings with a minimum pressure rating of 1200 psig (82.7 bar).
To accommodate the use of compression style or SAE 45° flared tube fittings, the standard Janus Fire Systems®
Pilot Actuation Check Valve (P/N 18560) is not recommended. Instead, the Janus Fire Systems® NPT Style
Pilot Actuation Check Valve (P/N 10262) along with an adapter hex nipple (P/N 18713 or P/N 19192) is
used as shown in the highlighted section of Figure 4.1.6.2.
e pilot actuation line begins at the pilot actuation port of the primary cylinder and ends at the pneumatic
valve actuator of the last slave cylinder. When utilizing copper tubing, the total length of the pilot actuation
line from the primary cylinder to the last slave cylinder (including any rises or drops) cannot be greater than
100 ft (30.48 m).
4.1.6.3 Installation Using Schedule 40 Pipe
Schedule 40 pipe provided by the installer may be used to assemble the pilot actuation line as shown in
Figures 4.1.6.3. e Schedule 40 pipe must be 1/4" (8 mm) and comply with the guidelines set forth in
NFPA 2001 and Sections 4.1.2 through 4.1.2.5 of this manual.
Janus Fire Systems 24" (610 mm) ex hose assemblies (P/N 18649) should be used to connect pilot actuation
piping to the pilot actuation check valve and pneumatic actuators, utilizing appropriate 1/4" brass 37° JIC or
45° SAE flare ttings with a minimum pressure rating of 1200 psig (82.7 bar).
e pilot actuation line begins at the pilot actuation port of the primary cylinder and ends at the pneumatic
valve actuator of the last slave cylinder. When utilizing Schedule 40 pipe, the total length of Schedule 40
pipe from the primary cylinder to the last slave cylinder (including any rises or drops) cannot exceed 25 ft
(7.62 m) in length.
Section 4 System Installation
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