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XI. Hot Water Supply Boiler Piping (continued)
Figure 26: Two Appliances, Single Tank
Cold Water Supply
Expansion Tank
Mixing Valve
Hot Water Supply
Thermometer
Storage Tank
T&P Relief Valve
Table 30: Required Common Piping Sizes for Multiple Appliances
AMPW
Notes:
Model
1. This is a suggested piping configuration. It is the
installer's responsibility to to conform to local codes
1000
and ordinances for additional requirements.
1250
2. Relief valve shall not exceed the pressure
1500
rating of any components in the system.
2000
3. The circulator shall be sized to overcome the
pressure drop across the entire loop.
2500
3000
3500
4000
Note: Nominal pipe sizes are noted. Based on type L copper pipe
!
NOTICE
NOTICE
System
Circulator
2
3
5"
6"
5"
6"
6"
6"
6"
8"
8"
10"
8"
10"
10"
10"
10"
10"
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.
5. Erosion could occur if common piping is undersized.
Recirculation Filter
Check Valve
Isolation Valve
Number of Appliances
4
8"
8"
8"
10"
10"
10"
12"
12"
57
Hot Water Return
Factory Supplied Manifold
Heater Circulator
Y-Strainer
5
6
8"
10"
8"
10"
8"
10"
10"
10"
Thermal Solutions Prod
12"
12"
12"
12"
14"
14"
14"
14"
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