Vertical Terminations - Rinnai RL75I Operation And Installation Manual

Direct vent tankless water heater
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Flue Installation (R98LSi, R98LSi-ASME)
Horizontal with Concentric Termination
SLOPE INTAKE AND EXHAUST
TOWARD OUTSIDE TERMINATION
MINIMUM 1/4" PER FOOT

Vertical Terminations

The air intake requires a return bend or two 90º elbows to prevent entry of rain.
The vent termination and air intake must be in the same pressure zone.
VB Series Indoor LS Manual
33

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