Rinnai E75CN Installation & Servicing Instructions Manual page 19

2
3
Boiler basic piping
1. shut off valve
2. system circulator
3. check valve
4. balancing valve
5. boiler drain valve
6. dirt trap
7. air separator
8. automatic fi ll valve
9. back fl ow preventer
10. expansion tank
11. bypass for system cleaning
P
Low Loss Header
T
V1 V2
Service valve Service valve
11
1
7
6
8 9
10
4
5
fi g. 5
19