Raypak 302-902 User Manual
Page 28
28
SECTION J-1
Natural Draft Vertical Venting (Category I)
NATURAL DRAFT VERTICAL VENT
NOTE:
**Vent lengths are based on a lateral length of 2 feet. Refer to the latest edition of the National Fuel Gas Code for further
details. (ANSI Z223.1)
Fig. #9228
10' OR LESS
2' MIN
VENT CAP
2' MIN
VENT PIPE
BOILER UNIT
COMBUSTION
AIR FILTER
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