TriangleTube 399 Solo - Manual (Page 24)

18
Boiler Piping
Max.
12"
Boiler
Supply
System
Return
System
Cold
Water Fill
Boiler
Supply Return
7
10
1
2
3
5
4 6
6 6
11 12
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
Max.
12"
11 12
Fig. 7 : Near Boiler Piping - Closed Type Expansion Tank
Fig. 6: 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. Boiler circulator
12. Flow/check valve
Note: Pitch horizontal pip-
ing upwards (1” of pitch
per 5 ft of piping) towards
expansion tank.