AERCO Esteem O&M Manual - Manual (Page 27)

21
System Piping - Special Application
Figure 7: Near Boiler Piping - Diaphragm Expansion Tank
Figure 8: Near Boiler Piping - Closed Type Expansion Tank
Note: Pitch horizontal
piping upwards (1” of
pitch per 5 ft of piping)
towards 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
GF-125