SECTION 5 – INSTALLATION INSTRUCTIONS
UL EX3470 ULC EX3470
PAGE 5-8 REV. 11 2014-SEP-01
R-102 Restaurant Fire Suppression Manual
AGENT DISTRIBUTION HOSE INSTALLATION
INSTRUCTIONS (Continued)
Final Installation Guidelines and Checkout Procedures
(Continued)
ACCEPTABLE HOSE ORIENTATION
UNACCEPTABLE HOSE ORIENTATION
AGENT
DISTRIBUTION
3/8 IN
PIPING
W
A
L
L
SHARP BENDS
TWISTING
FATIGUE
SIDE VIEW
MIN.
30 IN
(762
mm)
MAXIMUM
HEIGHT
OF HOSE
CONNECTION IS
TO BE BELOW
THE APPLIANCE
COOKING
SURFACE
FIGURE 5-14
007830
4. Return the appliance to its normal operating position in
accordance with NFPA 96. Means shall be provided to
verify that the appliance returns to its original designed
positioning. Failure to do so may result in undue stress and
fatigue of the hose and hose connections.
INSTALLING THE ACTUATION AND EXPELLANT GAS LINE
Before installing any actuation or expellant gas line, the design
must be determined; and the regulated release assembly, each
regulated actuator assembly and each tank-bracket assembly
should be securely mounted.
General Piping Requirements
1. Use only 1/4 in. Schedule 40 black iron, hot-dipped galva-
nized, chrome-plated, or stainless steel pipe and fittings.
2. Before assembling the pipe and fittings, make certain all
ends are carefully reamed and blown clear of chips and
scale. Inside of pipe and fittings must be free of oil and dirt.
3. The piping and fitting connections must be sealed with pipe
tape. When applying pipe tape, start at the second male
thread and wrap the tape (two turns maximum) clockwise
around the threads, away from the pipe opening.
NOTICE
Do not allow tape to overlap the pipe
opening, as this could cause possible
blockage of the gas pressure.
Thread sealant or compound must not
be used.
4. When connecting actuation or expellant gas line piping,
install a 1/4 in. union near the tank inlet for easy disassem-
bly later.
Note: Expellant gas line cannot use stainless steel braided
hose.
Actuation Gas Line
Install actuation gas line from the regulated release mechanism
high pressure side outlet (side opposite regulated outlet) through
the appropriate knockout in the enclosure by completing the
following steps:
1. Remove the 1/8 in. plug from high pressure side outlet.
Install the appropriate fitting for additional equipment attach-
ment as required. A 1/4 x 1/8 in. reducing fitting is required
to connect the 1/4 in. actuation line. See Figure 5-15.
2. Run piping or hose up through the regulated release assem-
bly enclosure knockout to the inlet on top of each regulated
actuator assembly used within the system.