Aqua-Hot 450-DE Series, Руководство по установке, Страница: 27 / 55

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© 2008 Aqua-Hot
®
450-DE/DM Hydronic Heating System Installation Manual
Section 6: Fuel System
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
the ANSI/NFPA 1192 Handbook concerning heating
systems’ diesel fuel system specifications.
Also, be sure to reference the ANSI/NFPA 1192 hand-
book for information regarding fuel distribution system
specifications.
Fuel head pressure should not exceed 10 feet. Refer-
ence Figure 35.
Use a minimum of ¼
inch
I.D. (internal diameter) fuel
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
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.
Dedicated
Fuel Pick-Up
Pipe
OUTLET PORT:
to the
Aqua-Hot’s Fuel Filter.
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.
INLET PORT:
from the
Aqua-Hot’s Outlet port.
Figure 34
450 --- DE/DM
450 --- DE/DM
50 ft. maximum distance
50 ft. maximum distance
Maximum
Allowable Suction
Height 7 feet
Maximum
Allowable
Head Pressure
10 ft.
Figure 35