Rinnai Direct Vent Space Heaters Extention Kits
Rinnai Extension Kit for Rinnai Gas Direct Vented Space Heaters can use extension venting for up to 13 feet with max 2 elbows (The Bend at the heater does not count towards the max of 2 elbows). Pipe must be accessible and cannot be buried in a wall.
Rinnai extensions exceeding this length should drain to the outside and sloped 3 degree downward slope to allow moisture to drain out of the pipe instead into the heater, which would damage the unit.
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