ECR International AMB-4, Инструкция по применению

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PN 240013666 REV. A [06/30/2022]
Common Venting Requirements
COMBINED
INPUT (BTUH)
x1000
Table 5 - COMMON VENT SIZING (INCHES)
Vertical Vent Height (Ft)
6’ 8’ 10’ 20’ 30’ 50’ 100’
550
12 12 12 10 9 9 8
600
14 12 12 12 10 9 9
790
14 14 14 12 12 10 9
900
16 14 14 12 12 12 10
1,050
16 16 16 14 12 12 12
1,200
18 18 16 14 14 12 12
COMMON VENT
DIAMETER
(INCHES)
MAXIMUM
HORIZONTAL
LENGTH
FEET [INCHES]
8 12�0 [144”]
9 13�5 [162”]
10 15�0 [180”]
12 18�0 [216”]
14 21�0 [252”]
16 24�0 [288”]
18 27�0 [324”]
Table 5 based on TYPE-B Double-Wall vent using
un-assisted
Common Vent system. Reference is NFPA-
54 / ANSI Z223.1 National Fuel Gas Code.
Consult NFPA-54 / ANSI Z223.1 National Fuel Gas Code. for “Mechanical Vent” Sizing and additional vent
information.
Maximum Horizontal Vent Length shall not exceed allowable [Common Header Vent Size x 18”]. See Table 6.
If longer Horizontal Vent Lengths are required – percentage reduction in capacity must be made to Table
values. Consult NFPA-54 / ANSI Z223.1 National Fuel Gas Code.
Table 5 - Common Vent Sizing Table for Multiple Boilers
Table 6 - Maximum Horizontal Length of Common Vent