SYSTEM PIPE NETWORK DESIGN AND LIMITATIONS
GENERAL DESIGN RULES
No ½” pipe nozzle branches shorter than 300mm long.
Nozzle types may not be mixed on any nozzle branch line and a maximum of 4 flow points.
The discharge fitting, distributor and distribution hose are not to be included in any calculations.
No mixing of pipe sizes is allowed within pipe categories. Example: if one nozzle branch is to be ½” pipe then all must be ½” pipe. ½” pipe for nozzle branch lines is allowed only in an 11 flow point system.
Duct nozzle has a maximum vertical rise above the supply branch line of 1200mm.
Duct nozzle has a maximum vertical rise above the supply branch line of 1200mm.
There is a maximum of (4) flow points on each nozzle branch line.
The types of nozzles on a nozzle branch line may be mixed.
For system piping networks having all single flow point nozzles, there shall be no nozzle branch line less than 300mm.
KP
MINIMUM PIPING – Design of a KP system to protect a kitchen containing a Fryer, Wok or Range, the following MINIMUM TOTAL SYSTEM PIPING shall apply.
Appliance Minimum Length of Pipe Network Minimum Total Equvalent Length Minimum Flow Points per System
Fryer 1950 mm 3000 mm 2
Wok 1800 mm 66300 mm 6
Range 2100 mm 49200 mm 4
SUPPLY LINE : That portion of the agent distribution network piping that runs from the agent cylinder assembly outlet or distributor block to the first tee.
Cylinder Pipe Size MAX.Length of Pipe MAX.TEES MAX.ELBOWS MAX.BUSHINGS
KP-275 8 F-Points 3/8 6000 mm 1 5 0
KP-375 11 F-Points 3/8 or 1/2 7500 mm 1 5 1
KP-475 14 F-Points 1/2 7500 mm 1 5 2
KP-600 18 F-Points 1/2 7500 mm 1 5 2
2 x KP-375 22 F-Points 1/2 9000 mm 2 7 2
NOTES: 1. USE 3/8” SUPPLY LINE ONLY WHEN ALL PIPING IS TO BE 3/8” PIPE.
2. THE SUPPLY LINE HAS A MAXIMUM VERTICAL RISE ABOVE THE DISTRIBUTOR OF 3000mm.
SUPPLY BRANCH LINE : All pipe and fittings leaving the first tee in the system and ending with the last nozzle in the last nozzle branch line
Cylinder Pipe Size MAX. Length of Pipe – STRAIGHT MAX. Length of Pipe – SPLIT MAX.TEES MAX.ELBOWS MAX.BUSHINGS
KP-275 8 F-Points 3/8 6000 mm 7500 mm 7 8 0
KP-375 11 F-Points 3/8 or 1/2 8100 mm 9000 mm 10 8 2
KP-475 14 F-Points 3/8 8100 mm 9000 mm 12 8 2
KP-600 18 F-Points 3/8 or 1/2 10500 mm (either size) 15000 mm – 3/8 only 14 8 2
2 x KP-375 22 F-Points 3/8 or 1/2 12000mm – 1/2 OR 9000mm – 3/8 13500mm – 1/2 OR 9000mm – 3/8 18 8 0
NOTES: 1. IN A SINGLE KP 3.75 GALLON STRAIGHT PIPE SYSTEM, 1500mm OF PIPE MAY BE TRANSFERRED FROM THE SUPPLY LINE TO THE SUPPLY BRANCH LINE.
2. THE USE OF 3/8” PIPE WITH TWO MANIFOLD KP375’S IS ONLY PERMITTED WHEN THE SUPPLY LINE LENGTH IS EQUAL TO OR LESS THAN 6000 mm.
NOZZLE BRANCH LINE : All pipe and fittings leading from the supply branch tee to a system nozzle.
Cylinder Pipe Size MAX. Length of Pipe MAX.TEES MAX.ELBOWS MAX.BUSHINGS
KP-275 8 F-Points 3/8 9600 mm 5 10 0
KP-375 11 F-Points 3/8 or 1/2 9600 mm 8 12 11
KP-475 14 F-Points 3/8 9600 mm 10 15 0
KP-600 18 F-Points 3/8 9600 mm 11 18 15
2 x KP-375 22 F-Points 3/8 9600 mm 18 18 20
MAX per NOZZLE BRANCH 2100 mm 3 6 4
ZD
MINIMUM PIPING : When designing a ZD system for a kitchen containing a Fryer, Wok or Range, MINIMUM TOTAL SYSTEM PIPING must be met.
Appliance Minimum Length of Pipe Network Minimum Total Equvalent Length Minimum Flow Points per System
Fryer, Wok or Range 2450 mm 3000 mm 4
SUPPLY LINE : That portion of the agent distribution network piping that runs from the agent cylinder assembly outlet or distributor block to the first tee.
Cylinder Pipe Size MAX. Length of Pipe MAX.TEES MAX.ELBOWS MAX.BUSHINGS
KP-275 8 F-Points 3/8 6000 mm 1 5 0
KP-375 11 F-Points 3/8 6000 mm 1 5 1
KP-475 14 F-Points 1/2 6000 mm 1 5 2
2 x KP-375 22 F-Points 1/2 6000 mm 2 6 2
NOTES: SUPPLY LINE has a Maximum Vertical Rise of 1500mm above distributor.
SUPPLY BRANCH LINE : All pipe and fittings leaving the first tee in the system and ending with the last nozzle in the last nozzle branch line
Cylinder Pipe Size MAX. Length of Pipe – STRAIGHT / SPLIT MAX.TEES MAX.ELBOWS MAX.BUSHINGS
KP-275 8 F-Points 3/8 6000 mm / 7500 mm 7 8 0
KP-375 11 F-Points 3/8 6600 mm 6 8 2
KP-475 14 F-Points 3/8 8100 mm 12 8 2
2 x KP-375 22 F-Points 3/8 9600 mm 14 9 2
NOZZLE BRANCH LINE : All pipe and fittings leading from the supply branch tee to a system nozzle.
Cylinder Pipe Size MAX. Length of Pipe MAX.TEES MAX.ELBOWS MAX. F-Points/BRANCH
KP-275 8 F-Points 3/8 9600 mm 5 10
KP-375 11 F-Points 3/8 6600 mm 4 12
KP-475 14 F-Points 3/8 9600 mm 10 15
2 x KP-375 22 F-Points 3/8 9600 mm 6 22
TOTAL FLOOD MAX NOZZLE BRANCH 900 mm 0 6 2
DUCT NOZZLE BRANCH MAX 1800 mm 2 4 3
DEDICATED NOZZLE BRANCH MAX 2100 mm 1 6 2
Notes The DUCT NOZZLE BRANCH has a maximum vertical rise above the Supply Branch Line of 1200 mm
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