December 2008
Section 3 ZD Design
Page 3 - 49
Amerex Restaurant Fire Suppression System (EX 4658)
ZD DISTRIBUTION PIPING DESIGN LIMITS
FOR SINGLE CYLINDER OR TWIN CYLINDER MANIFOLDED SYSTEMS
When designing a “Zone Defense” system to protect a kitchen containing a Fryer, Wok or Range, the
following
MINIMUM TOTAL SYSTEM PIPING
must be used in accordance with the chart below:
MINIMUM PIPING REQUIREMENTS
APPLIANCE
MINIMUM
LINEAR FEET
MINIMUM TOTAL
EQUIVALENT FEET
MINIMUM FLOW
POINTS PER SYSTEM
Fryer, Wok or Range
8’-2”
10
4
SUPPLY LINE LIMITATIONS:
All pipe and fittings running from the distributor block or the discharge fitting to the first splitting tee.
(includes first tee)
CYLINDER
FLOW POINTS
PIPE SIZE
MAXIMUM LINEAR
FEET OF PIPE
MAX. QTY.
TEES
MAX. QTY.
ELBOWS
MAX. QTY.
BUSHINGS
275 = 8
3/8
20
1
5
0
375 = 11
3/8
20
1
5
1
475 = 14
1/2
20
1
5
2
2-375 = 22
1/2
20
2
6
2
NOTE:
1. The supply line has a
maximum vertical rise
above the distributor of
5 feet
.
SUPPLY BRANCH LINE (including last nozzle branch) LIMITATIONS:
All pipe and fittings leaving the first/splitting tee in the system and ending with the last nozzle in the last
branch line. While the last nozzle branch is included in the piping limitations for the supply branch line, the
limitation (pipe size and maximum length) for nozzle branch lines apply to this portion of the supply branch
line.
NOZZLE BRANCH LINE LIMITATIONS:
All pipe and fittings leading from the supply branch tee to a system nozzle.
CYLINDER
FLOW POINTS
PIPE SIZE
TOTAL
LINEAR FEET
OF PIPE
MAX.
QTY.
TEES
MAX.
QTY.
ELBOWS
MAX. FLOW
POINTS
PER BRANCH
275 = 8
3/8
32
5
10
375 = 11
22
4
12
475 = 14
32
10
15
2-375 = 22
32
6
22
TOTAL FLOOD NOZZLE BRANCH MAX.
3
0
6
2
DUCT NOZZLE BRANCH MAX.
6
2
4
3
DEDICATED NOZZLE BRANCH LINE
7
1
6
2
NOTE
: 1. The Duct Nozzle Branch has a
maximum vertical rise
above the supply branch line of
4 feet
.
CYLINDER
FLOW
POINTS
PIPE
SIZE
MAX. FEET OF
PIPE STRAIGHT
OR SPLIT
MAX.
QTY.
TEES
MAX. QTY.
ELBOWS
MAX. QTY.
REDUCING
BUSHINGS
275 = 8
3/8”
20/25
7
8
0
375 = 11
22
6
8
2
475 = 14
27
12
8
2
2-375 = 22
32
14
9
2
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Страница 171: ...APPENDIX C MANUAL P N 26692 AMEREX STRIKETM ECS INSTALLATION OPERATION MAINTENANCE MANUAL February 2019 ...