46
AMPW 400-1000L I&O Manual
Table 24: Required Common Piping Sizes for Multiple Appliances
Figure 20: Two Water Heaters, Two Tanks
AMPW
Model
Number of Appliances
2
3
4
5
6
400
2.5"
3"
3.5"
3.5"
4"
500
2.5"
3"
3.5"
4"
5"
650
3"
3.5"
4"
5"
5"
800
3.5"
4"
5"
5"
6"
1000L
3.5"
5"
5"
6"
6"
Note: Nominal pipe sizes are noted. Based on type L copper pipe
How Water Return
Recirculation Filter
System Circulator
Cold Water Supply
Expansion Tank
Mixing Valve
Thermometer
Hot Water
Supply
T&P Relief Valve
Isolation Valve
Union
Y-Strainer
Isolation
Valve
Water Heater
Circulator
Storage Tank
Check Valve
Union
. Water Piping Diagrams
(continued)
NOTICE
NOTICE
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.
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