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X. Heating Boiler Piping Diagrams (continued)
Figure 17: Multiple Boiler, Primary/Secondary with Common Header Piping
From System
Y-Strainer
Boiler Circulator
!
NOTICE
NOTICE
System Circulator
Air Vent
Purge Valve
A
1. These are suggested piping configurations. It is the installer's responsibility to
conform to local codes and ordinances for additional requirements.
2. Pressure relief valve rating shall not exceed pressure rating of any component
in the system.
3. Some piping components cannot be supported by the pipping. Refer to the
manufactures' installation instructions.
4. Circulation pump must be sized to overcome the pressure drop across the entire
loop.
B
Pressure Reducing Valve
Expansion Tank
Isolation Valve
A.
No more than 12 inches or 4 pipe diameters
B.
At least 18" of straight pipe for convetional
air scoop
46
To System
Make Up Water
Check Valve
Check Valve
Factory Supplied Manifold
Thermal Solutions Products LLC
8/3
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