Bradford White EverHot TGHE-160I-NX Installation And Operation Instruction Manual page 66

5 gallon pail of virgin, food
grade, white vinegar (or virgin,
food grade, citric acid).
Figure 43. Piping for Mineral Scale Flushing.
V1
H3
V3
Hot Water Line
H2
Circulating Pump
66
Eve r Hot® Rinnai
Water Heater
I n-line
Filter
Gas Supply
V2
V4
Cold Water Line
H1