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© 2011 Aqua-Hot
®
450-D Hydronic Heating System Owner’s Manual
O
PERATING
I
NSTRUCTIONS
DO NOT
operate the Diesel-Burner and/or Electric Heat-
ing Element without the antifreeze and water heating so-
lution in the Aqua-Hot’s Boiler Tank. Failure to do so will
cause serious damage to the Heater.
Activating the Aqua-Hot Heating System:
Diesel-Burner:
Turn the Burner switch
ON
; reference Figure 5. This pro-
cedure will activate the Diesel-Burner and the indicator
light located adjacent to the Diesel-Burner switch. Allow
10-20 minutes for the Aqua-Hot System to reach operat-
ing temperature. Please note that the Diesel-Burner is
the
primary heat source
for heating both the interior and
the domestic hot water (such as when cool ambient tem-
peratures exist and/or when there is a high demand for
domestic hot water).
Electric Heating Element:
Turn the Electric switch
ON
; reference Figure 5. This pro-
cedure will activate the 120 Volt-AC Electric Heating Ele-
ment and the indicator light located adjacent to the Elec-
tric switch. Allow 1-2 hours for the Aqua-Hot System to
reach operating temperature.
Engine Preheat Element:
In order to use the Engine Preheat element on the Aqua-
Hot system, both the Diesel-Burner AND the Engine Pre-
heat switch must be turned
ON
; reference figure 5. Allow
the Engine Preheat element to function for one hour be-
fore starting the vehicle’s engine.
The Aqua-Hot’s Exhaust is HOT!
DO NOT park in areas where dry conditions exist un-
derneath the vehicle as a fire may result (i.e., in a dry,
grassy field)!
DO NOT operate the Aqua-Hot’s Diesel-Burner inside
an enclosed building!
The Heater must be switched OFF when refueling.
WA R N I N G !
CAU T I O N :
Figure 5
Indicator
Light
