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ELBOWS
For each additional 90° elbow used after first elbow, 3ft. (914mm) must be subtracted from maximum allowed venting.
For each 45° elbow used, 1-1/2ft. (457mm) must be subtracted from maximum venting allowed.
(2) 45° degree elbows may be used in place of (1) 90° elbow.
Horizontal sections require 1/4" (6mm) rise for every 12" (305mm) of travel.
Page 21 has information on restrictor installation in conjunction with venting installation. Page 41 has information on restrictor
NOTE
recommendations depending on burner flame appearance and instructions on installation after venting is completed.
CAUTION
This gas appliance must not be connected to or joined with any other chimney flue serving another appliance.
HORIZONTAL & VERTICAL COMBINATION VENTING
Figure 22a
VENTING
22
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Troubleshooting
