Flueing Options - Rinnai INFINITY N56kWi Installation Manual

Flueing options

Single skin polypropylene common flueing (zero clearance) is designed for use with Rinnai
INFINITY N56kWi internal model only. It is not suitable for use with any other Rinnai INFINITY
models.
IMPORTANT
For all applications the flue must pitch back to the water heater at a constant 3° pitch (54 mm per
metre) to drain condensate.
Rinnai header components are cut (and only suitable) for water heaters mounted on 521 mm
centres, and if back-to-back, 159 mm spacing. N56kWi flueing is available with the header
configurations shown below.
Unit spacing required
521 mm
Room air header configurations
Multiple water heaters using room air for combustion while sharing an
exhaust header that vents directly outside. A room air adapter is fitted
(as pictured) to the top of each water heater.
Exhaust
Room air inline header
Outside air header configurations
Multiple water heaters share a combustion air header and a separate exhaust header that vents
directly through separate penetrations to the outside.
Exhaust
Air intake
Outside air inline header
4 | Rinnai INFINITY N56kWi common flue installation guide 13088-B 04-20
521 mm
159 mm
Exhaust
Room air back-to-back header
Exhaust
Air intake
Outside air back-to-back header