Amerex 20150, Руководство по проектированию, установке, техническому обслуживанию и перезарядке

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DUCT PROTECTION LIMITATIONS 150 IN. PERIMETER
THREE 1½ FLOW POINT NOZZLES (3 x P/N 11983)
The Amerex Solid Fuel Appliance/Duct
Nozzle (P/N 11983) is listed to protect
restaurant cooking exhaust ducts of
unlimited length, unlimited changes in
direction and up to 150 perimeter inches
(381 cm) or 48 diameter inches (122 cm)
using three nozzles. The nozzles total four
and one-half flow points and to properly
position the nozzles, a rectangular duct
should be divided along its longest side into
six equal distances. A circular duct should
be divided along its center line into six equal
distances. The nozzles are to be placed at
one sixth, one half and five sixths positions
of the duct width (or diameter) on the center
line, placed 2-8 inches (5.08 – 20.3 cm) into
the duct opening and aimed straight up for
vertically run duct.
NOTE : In no case can the diagonal dimension of the duct exceed
55.9 inches (142 cm) without adding additional duct
nozzles.
TRANSITION LIMITATIONS – TWO NOZZLES (P/N 11983)
A transition is a section of some exhaust systems between the hood and the duct. Two Amerex solid fuel
appliance/duct nozzles (P/N 11983) will protect a transition at the point where the transition is 100 perimeter
inches (254 cm) or less or a diameter of 32 inches (94.4 cm) or less. The nozzles total three flow points and
to properly position the nozzles, a rectangular duct should be divided along its longest side into four equal
distances. A circular duct should be divided along its center line into four equal distances. The nozzles are to
be placed at one quarter and three quarters position of the duct width (or diameter) with both nozzles on the
center line, placed 2 - 8 inches (5.08 – 20.3 cm) into the duct opening and aimed straight up in a vertically run
duct. Additional duct protection is not required when using this method.
NOTE : In no case can the diagonal dimension of the duct exceed 37.2 inches (94.4 cm)
without adding additional duct nozzles.
(REFER TO PAGE 3-1 FOR PICTORIAL REPRESENTATION)
December 2008 Section 3 Design Page 3 - 3
Amerex Restaurant Fire Suppression System (EX 4658)
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6
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6
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A
B
2A+2B+Perimeter Inches