Install Instructions

18
Boiler Piping
Max.
12"
Boiler
Supply
System
Return
System
[30.5 cm]
Cold
Water Fill
Boiler
Supply
Return
7
10
1
2
3
5
4
6
6
6
11
7
1
10
9
8
4
3
6
6
6
Cold
Water Fill
Boiler
Supply
Minimum
3/4" Piping
Boiler
Return
Return
System
Supply
System
11
Max.
12"
[30.5 cm]
Fig. 6 : Near Boiler Piping - Closed Type Expansion Tank
Fig. 5: Near Boiler Piping - Diaphragm Expansion Tank
1. System circulator
2. Automatic air vent
3. Air separator
4. Automatic fill valve
5. Diaphragm expansion tank
6. Isolation valve
7. Drain/purge valve
8. Tank fitting
9. Closed type expansion tank
10. Primary/secondary connection
11. CH circulator with flow check