Installation and Operation Manual

Rinnai Tankless Water Heater Installation and Operation Manual 39
1. Direct Vent (Twin Pipe)



Exhaust



opening





Air



Roof

Intake












Intake
Exhaust
Figure 31
Figure 32: Twin Pipe Vertical
Termination of Multiple Water Heaters
Figure 33: Horizontal Vent and Combustion
Air Piping

