Form I-RA/D 140/235 (Version A), Page 12
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Typical
Installation
Supply Lines
Installation
Continued
the suction line components as illustrated. With the vacuum gauge
mounted on the outlet side of the filter, the gauge will indicate any
suction line restriction including a dirty filter. A pump inlet manifold is
supplied for direct connection of the filter to the inlet of the pump.
The 50 psi relief valve supplied with the pump and a return line of 1/8”
NPT black iron pipe must be installed as illustrated.
The discharge line between the valve on the outlet side of the fuel
pump and the heater should be 3/8” O.D. copper tubing with a mini-
mum of 1/32” wall thickness with 45° flare fittings. The discharge line
must continually rise. A lift height of up to 15 ft (4.5 M) is acceptable
with a maximum total length of 100 feet (30.5 M) of tubing. (NOTE:
Do not use 1/2” o.d. tubing in the supply line for these models.)
Do not install manual valves in the supply line.
Connect the fuel line to the heater at the connection on the corner of
the service tray.
All piping should be protected from possible damage and be rigidly
fastened in place in a workmanlike manner. Do not use TEFLON
®
based pipe dope or TEFLON
®
tape at the connections in an oil line.
Use an oil-resistant pipe dope. Do not use union connections in the
suction line (line between the oil supply and the remote pump).
NOTE:
Care must be exercised to ensure airtight connections.
Return Line
Discharge Line (por
-
tion of supply line
from pump to heater)
Supply Line
Connections and
Support
Suction Line (cont’d)
