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A kinked fuel line will increase the fuel pressure to hazard-
ous levels and may cause a fuel line to rupture. A kinked fuel
line could also severely damage the diesel-burner's internal fuel
system.
Fuel System Location:
Mount the fuel filter in a location that provides easy
access for changing the filter element and for catching
any potential fuel spillage when servicing.
Fuel System Requirements:
The diesel fuel supply should be drawn directly from
the vehicle's main fuel tank or from a separate auxiliary
fuel tank, if applicable.
The fuel tank should be equipped with a dedicated fuel
pick-up pipe (inlet port and outlet port). Reference
Figure 34.
NOTE: If an auxiliary fuel tank is required, be sure to consult
Maximum
the ANSI/NFPA 1192 Handbook concerning heating
Allowable Suction
systems' diesel fuel system specifications.
Height 7 feet
Also, be sure to reference the ANSI/NFPA 1192 hand-
book for information regarding fuel distribution system
specifications.
Head Pressure
450 --- DE/DM
Maximum
Allowable
10 ft.
450 --- DE/DM
© 2008 Aqua-Hot
®
450-DE/DM Hydronic Heating System Installation Manual
Section 6: Fuel System
Fuel head pressure should not exceed 10 feet. Refer-
ence Figure 35.
Use a minimum of ¼
lines.
The combined length of the inlet and outlet fuel lines
should not exceed 100 feet in total length. Reference
Figures 35 and 36.
All fuel-fitting hardware (i.e., at the vehicle's fuel tank,
fuel filter, and Aqua-Hot fuel ports) must be ¼ inch
50 ft. maximum distance
NPT or greater with a minimum of ¼ inch barbed
fitting. Fuel fittings less than ¼ inch NPT may restrict
fuel flow, thereby compromising the diesel-burner's
performance.
Figure 34
OUTLET PORT:
to the
Aqua-Hot's Fuel Filter.
Dedicated
Fuel Pick-Up
Pipe
NOTE: The fuel pick-up pipe
should not extend further than the
motorhome's engine fuel supply
pick-up and should be consistent
with the on-board generator's fuel
supply pick-up length.
50 ft. maximum distance
Figure 35
inch
I.D. (internal diameter) fuel
INLET PORT:
from the
Aqua-Hot's Outlet port.
— Page 24 —
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