AMP 400-1000L I&O Manual 43
X(continued)
A
B
System Pump
To System
Make Up Water
From System
Air Vent
Purge Valve
Pressure Reducing Valve
Expansion Tank
Boiler Pump
Check Valve
Y-Strainer
No more than 12 inches or 4 pipe diameters
A.
At least 18" of straight pipe for conventional air scoopB.