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X. Heating Boiler Piping diagrams
Figure 16: Single Boiler, Primary/Secondary Piping
Pressure Reducing Valve
Purge Valve
From System
Isolation Valve
Expansion Tank
Check Valve
!
NOTICE
NOTICE
System Circulator
Air Vent
A
B
Y-Strainer
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.
To System
Factory Supplied Manifold
Boiler Circulator
A.
No more than 12 inches or 4 pipe diameters
B.
At least 18" of straight pipe for convetional air scoop
45
Isolation Valve
Make Up Water
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