Install Instructions (Venting)

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5.0 Manifold Combustion Air
5.5 Transition Boiler Air Piping to Manifold
Guidelines
- The transitions piping from the boiler adapter to the
combustion air manifold must be 3 inch or 4 inch
p
ipe.
- Reference Table 8 on page 10 for reductions in
allowable equivalent lengths.
To maintain the maximum allowable equivalent length
of the combustion air manifold, keep the boiler tran-
sition vent piping to a minimum using the least
amount of fittings and pipe lengths as possible.
BEST PRACTICE