Rinnai HJ Cooper LCUS00934010 Owner And Installer Manual page 10

Plumbing setup for a low pressure copper cylinder - open vented
Vent pipe terminating outside building
Hot water to kitchen and laundry
Tempering valve
Tempered hot water to bathroom
Pressure reducing valve
Isolation and non-return valve
Isolation valve
Line strainer Drip tray
Third inlet option
10 | Low pressure indoor copper owner and installer guide: 20733-C 03-13