Rinnai ENERGYSAVER EX08C Installation Fundamentals page 40

Interior Wall Preparation
DRILLING THE VENT HOLE
1. Interior:
Using a 3" inch
hole saw, drill the
vent hole guided
by the previously
drilled pilot hole.
NOTE: Drill holes level or
sloped downward 2°to the
outside. Vent termination
must have outward pitch to
ensure condensation
drains to the outside.
2. Exterior:
Continue drilling hole
guided by the
previously drilled pilot
hole.
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