Installation Guide

Rinnai Tankless Water Heater Installaon and Operaon Manual 9
Internal (Indoor) Models (RU199i, RU180i, RU160i, and RU130i)
Front Panel View
Side Panel View
External (Outdoor) Models (RU199e, RU180e, RU160e, and RU130e)
Front Panel View
Side Panel View
2.6 Dimensions
Vent Connecon:
2 in. (51 mm) nominal
PVC/Polypropylene or
3 in./5 in. Concentric.
Measurements: in. (mm)