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XI. Hot Water Supply Boiler Piping (continued)
Figure 27: Two Appliances, Two Tanks
Cold Water Supply
Check Valve
Expansion Tank
Mixing Valve
Hot Water Supply
Thermometer
Storage Tank
T&P Relief Valve
Required Common Piping Sizes for Multiple Appliances
AMPW
Model
1000
1250
1500
2000
2500
3000
3500
4000
Note: Nominal pipe sizes are noted. Based on type L copper pipe.
!
NOTICE
NOTICE
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.
System Circulator
Number of Appliances
4
8"
8"
8"
10"
10"
10"
12"
12"
58
Recirculation Filter
Hot Water Return
Factory Supplied Manifold
Water Heater
Circulator
Isolation Valve
5
6
8"
10"
8"
10"
8"
10"
10"
10"
Thermal Solutions Products
12"
12"
12"
12"
14"
14"
14"
14"
4/1
Y-Strainer
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