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© 2011 Aqua-Hot
®
450-D Hydronic Heating System Owner’s Manual
I
NTRODUCTION
Wire Harness
Port
AC Wiring
Port
Product I.D.
Label
Zone 1 Circulation
Pump
Zone 2 Circulation
Pump
Drain Valve
Interlock
Switch
Diesel-Burner
Diesel Burner
Controller
Back of Unit
Figure 2
Domestic Hot
Water Outlet
Engine Preheat
Inlet
(From Engine)
Engine Preheat
Circulation
Pump
Engine Preheat
Outlet
(To Engine)
Domestic Cold
Water Intlet