American Standard HPWH50G-AS Owners And Operation Manual page 16

HEAT PUMP WATER HEATER
Thermal
expansion tank
(if required)
Relief valve discharge
line to suitable open
drain
16
Electrical junction box (use
only copper conductors)
Temperature &
Pressure Relief Valve
(shown in different location
for clarity)
Union
Hot water outlet
to fixtures
Union
Shut-off valve
To cold water
supply
6" air gap
To electrical
distribution panel
Drain valve
Jacket
access panel
Jacket
access panel
Auxiliary
catch pan 2"
maximum