Installation Guide

80 Rinnai Tankless Water Heater Installation and Operation Manual
CROSSOVER MODE
Plumbing Diagram (Crossover Mode)
Install thermal bypass valve
at the farthest fixture from the
tankless water heater.
Condensate Drain Line
Floor Drain
Cold Water Supply Line
Gas Supply Line
Hot Water Fixtures
Hot Water Supply Line
Figure 87
Figure 88
Note: Warm water may come out of the
cold side of the faucet for a few seconds.