SECTION 4 – SYSTEM DESIGN
UL EX3470 ULC EX3470
PAGE 4-62 REV. 11 2014-SEP-01
R-102 Restaurant Fire Suppression Manual
ACTUATION AND EXPELLENT GAS LINE REQUIREMENTS
(Continued)
Actuation Gas Line – 6 to 8* Tanks Maximum (Continued)
3. If an expellant gas line is connected to the regulated
release assembly along with an actuation gas line, the total
combined length of the actuation and expellant gas line
must not exceed 30 ft (9.1 m) when using a “double-tank”
nitrogen cartridge or a LT-A-101-30 nitrogen cartridge or a
101-30 carbon dioxide cartridge. See Figure 4-122.
4. A combined total of nine ttings may be used in these lines,
eight 90° elbows and one tee. Two 45° elbows equal one
90° elbow.
Actuation Gas Line – 10 to 15* Tanks Maximum
* 15 Tank maximum reflects the utilization of 3 tank regulated actuators.
1. Use only 1/4 in. Schedule 40 black iron, hot-dipped galva-
nized, chrome-plated, or stainless steel pipe and ttings.
Note: Stainless steel hose and ttings can also be used.
See Component Section for detailed information.
FIGURE 4-122
000262
2. The actuation gas line piping is installed from the 101
remote mechanical release to each R-102 regulated actua-
tor assembly. The total length of the actuation gas line from
the remote mechanical release to the regulated actuator
assemblies must not exceed 100 ft (30.4 m).
3. A combined total of 20 elbows and 9 tees may be used
in these lines. Two 45° elbows equal one 90° elbow. See
Figure 4-123.
4. Use only a 101-10 carbon dioxide cartridge in the 101
remote mechanical release.
5. A safety vent relief valve (Part No. 15677) is required in the
actuation gas line to relieve residual pressure after actua-
tion.
Actuation Gas Line – Using 1/4 in. Stainless Steel Hose
* 15 Tank maximum reflects the utilization of three tank regulated actuators.
1. Maximum total length of hose cannot exceed 17.5 ft (5.3 m).
Note: A combination of 1/4 in. stainless steel braided hose
and 1/4 in. NPT pipe can be used as long as the total
combined actuation gas line length does not exceed 17.5 ft
(5.3 m). Stainless steel braided hose cannot be used for
expellant gas lines. See Figure 4-123 for additional details.
2. Maximum of ve regulated actuators allowed
3. Actuated with remote release (Part No. 433485) or Regulated
Release Assembly (Part No. 429853)
ACTUATOR AND EXPELLANT GAS LINES WITH A
“DOUBLE TANK” CARTRIDGE OR A 101-30 CARTRIDGE
OR A LT-A-101-30 CARTRIDGE
MAXIMUM COMBINED LENGTH – 30 FT (9.1 m);
MAXIMUM COMBINED FITTINGS – 9
REGULATED
ACTUATOR
ASSEMBLY
REGULATED ACTUATOR
ASSEMBLY EXPELLANT
GAS LINES NOT INCLUDED
IN COMBINED TOTALS
REGULATED
ACTUATOR
ASSEMBLY
AUTOMAN
REGULATED RELEASE ASSEMBLY
1/4 IN. STAINLESS
STEEL HOSE
MAXIMUM OF 5
REGULATED ACTUATORS
REGULATED ACTUATOR
WITH TANK
NOTE: WHEN MULTIPLE RELEASE ASSEMBLIES ARE UTILIZED, A 1/4 IN. CHECK VALVE
(PART NO. 25627) WILL BE REQUIRED AFTER EACH REGULATED RELEASE.
1/4 IN. STAINLESS STEEL HOSE OPTIONS
SAFETY
RELIEF VALVE
MAXIMUM OF
5 REMOTE
RELEASE
MECHANISMS
(PART NO.
433485) OR
ONE REGULATED
RELEASE (PART
NO. 429853)
CHECK VALVE
FIGURE 4-123
000301
42 IN. (1066 mm)
MAX. HOSE
LENGTH (TYP.)
EXPELLANT
GAS LINE
SAFETY
RELIEF VALVE
1/4 IN. ACTUATION LINE –
100 FT (30.4 m) MAXIMUM
9 TEES MAXIMUM
20 ELBOWS
MAXIMUM
REMOTE RELEASE MECHANISMS
(PART NO. 433485) 5 MAXIMUM
REGULATED ACTUATOR
WITH TANK
MAXIMUM OF 5
REGULATED
ACTUATORS
AGENT TANK
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