Fluid Circulation Pump
©Aqua-Hot®
250-D03 Diesel Series Service Manual
REV 220302
p. 37
Diesel Burner
Diesel Burner Overview
The diesel burner serves as the primary heating source for the
Aqua-Hot 250-D03. The diesel burner is responsible for mixing
and igniting diesel fuel within the combustion chamber. Heat
energy is then transferred from this combustion reaction into
the antifreeze and distilled water heating solution present in the
Aqua-Hot’s boiler tank, which is distributed to heat exchangers,
or to the domestic hot water coil to provide hot water.
Standard automotive diesel fuel is to be used as the fuel source.
Key components are called out below. The diesel burner has an
identifying label with information such as specifications and the
serial numbers.
Figure 62
Figure 63
Diesel Burner
Fuel Nozzle
Diesel Fuel
Return Banjo
Diesel Fuel
Supply Banjo
Air Intake
Diesel Burner ID Label
