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X. Water Piping Diagrams (continued)
Figure 18: Single Boiler with Indirect Domestic Water Heater
From System
Purge Valve
Y-Strainer
Boiler Pump
Flow Switch
(factory supplied)
A. No more than 12 inches or 4 pipe diameters
CAUTION
CAUTION
44
A
Mixing Valve
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 piping. Refer to the man-
ufacturers' installation instructions.
4. It is the installer's responsibility to select piping configurations that provide the
proper flow rates and performance.
5. Erosion could occur if common piping is undersized.
Expansion Tank
Air Vent
Hot Water
Cold Water
Check Valve
System Pump
To System
Make Up Water
Pressure Reducing Valve
DHW Pump
Check Valve
AMP 400-1000L I&O Manual
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