John Wood Commercial - AJWS - Manual (Page 10)

10
Thermometer
Temperature and
Pressure Relief Valve
Hot Water
to Fixtures
Temperature and
Pressure Relief Valve
Typical
Booster
Heater Pre-Heater
Pre-Heated
Water to
the Booster
Outlet
Boosted
Temperature
1 1/2” Cold
water supply
Thermal
Expansion
Tank
Pressure
Reducing
Valve
Thermometer
Shut-off valve
Shut-off valve
Check Valve
Shut-off valve
Shut-off valve
Figure 6: Commercial Unit with Auxiliary Booster Heater - Two Temperature (With or Without Building Recirculation)
Note: Install a vacuum
relief valve if required
by local codes.
Thermometer
Temperature and
Pressure Relief Valve
Temperature
and Pressure
Relief Valve
Storage Tank
Heater
1 1/2” Cold
water supply
Hot Water
Outlet
Thermal
Expansion
Tank
Pressure
Reducing
Valve
Check
Valve
Circulating
Pump
Plug
Cock
Shut-off valve
Shut-off valve
Shut-off valve
Figure 7: Commercial Unit with Auxiliary Storage Heater - Forced Circulation With or Without Building Recirculation
- Front Inlet/Outlet Connections
Note: Install a vacuum
relief valve if required
by local codes.
45mm (1 1/2 in)
Cold water supply
45mm (1 1/2 in)
Cold water supply