Rinnai RUC80i Installation And Operation Manual page 34

Parts Information
Types of Acceptable PVC/CPVC Elbows for Venting System
ACCEPTABLE ACCEPTABLE NOT ACCEPTABLE
90° Elbows, Female Unthreaded 90° Elbows, Female Unthreaded 90° Elbows, Female Unthreaded
Socket Ends: (Long Turn) Long Socket Ends: (1/4 Bend) Short Socket Ends: Close Turn
Sweep Sweep
WARNING
Improper installation of vent system and components, or failure to follow all installation instructions, can
result in property damage, personal injury, or death.
34 KBD Series Manual