Tyco Fire Suppression & Building Products ANSUL AQUASONIC, Design, Installation, Recharge, And Maintenance Manual

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SECTION V
3-1-2010 Page 5-5
RELEASING DEVICES
Different types of releasing/detection systems are available
with the AQUASONIC system:
• ANSUL AUTOMAN II-C release using thermal detectors
with pneumatic actuation
• AUTOPULSE Control System using electric detection
with electric actuation
• AUTOPULSE Control System with electric detection utiliz-
ing an ANSUL AUTOMAN II-C release for pneumatic
actuation
For detailed information on detection systems, refer to the
following:
• AUTOPULSE Detection and Control Systems Manual
(Part No. 430261)
• NFPA 72 - National Fire Alarm Code
• NFPA 70 - National Electrical Code
GENERAL PIPING REQUIREMENTS
Pipe Assembly
1. Pipe, tube, and nipples are to have the burrs and fins
removed after cutting. Prior to installation, each pipe or
tube section is to be swabbed internally by running a
clean rag, sponge, or other absorbent material through
the pipe to meet the internal cleanliness requirements
of NFPA 750.
2. All threads used in joints and fittings shall conform to
ANSI B1.20.1 – “Pipe Threads, General Purpose
(Inch),” as well as ISO 7.1 – “Pipe threads where
pressure-tight joints are made on the threads – dimen-
sions, tolerances and designation.” The sealant used
for making up threaded stainless steel pipe connec-
tions must be of a type that is rated for use with stain-
less steel.
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.
Note:
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. All pipe lengths are measured center to center of
fittings.
5. Size reductions can be accomplished with the use of
reducing bushings, reducing couplings, reducing tees,
or reducing elbows.
Hanger Requirements
1. Selection and installation of the piping system hangers
must be in accordance with the specifications of NFPA
13 and NFPA 750, except that the term “atomizer” is to
be substituted for “sprinkler.”
2. Install the pipe hangers in accordance with good piping
practices as well as the following:
• Refer to ASME B31.1, “Power Piping Code,” and any
appropriate local codes and standards
• A hanger should be installed between fittings when
the fittings are more than 2 ft (0.6 m) apart
ACTUATION PIPING
Actuation Pipe, Tubing, and Fitting Requirements
Before installing any actuation piping, the piping design
must be determined. This will confirm that the lengths of
actuation piping do not exceed the maximum allowable.
Use either 1/4 in. schedule-40 black iron, hot-dipped galva-
nized, chrome-plate, or stainless steel pipe/braided hose
and fittings conforming to ASTM A120, A53, or A106, or 1/4
in. stainless steel tubing with a 0.028 in. wall thickness and
appropriate tube fittings.
Refer to Table 1 concerning the maximum length of all 1/4
in. actuation piping.
Table 1 – Maximum Combined Length of Actuation
Piping
Maximum Distance
1/4 in. 1/4 in. Stainless Steel
Cartridge Schedule 40 Piping Tubing (0.028 in. wall)
_______ ________________ _________________
LT-10-R 50 ft (15 m) 150 ft (46 m)
LT-30-R 150 ft (46 m) 450 ft (137 m)
Installation