Lanair HI320 - Manual (Page 14)

SECTION 7 FUEL SUPPLY PUMP/PIPING
7.1 Mount the fuel supply pump in a Horizontal position (shaft horizontal) near
the fuel supply tank.
7.2 The oil pump has a maximum suction lift of 14 feet. Suction lift is the length
of pipe run from the bottom of the pick up strainer to the fuel supply pump.
7.3 The fuel pump/motor are for indoor use only.
7.4 The fuel pump contains an internal strainer that periodically needs to be
cleaned. This internal strainer is mounted behind the pump cover. Before
removing the pump cover make sure you have a new gasket on hand.
Contact the Lenan customer service department for the proper gasket for
your model of pump, at 800-753-1601.
7.5 Install the suction supply line from the inlet side of the fuel pump into the
fuel tank opposite the drain.
7.6 Install a 1/2” inside diameter (.493) steel pipe, or 1/2” outside diameter
copper throughout the suction supply line and pick up tube. The use of
smaller line, or rubber, plastic or hydraulic line is unsafe and will void your
warranty.
7.7 Use thread sealing compound on all pipe thread connections. Do Not use
Teflon Tape.
7.8 Install the suction line strainer in the suction line. Make sure the suction line
strainer is 6” off the bottom of the tank. The suction line strainer may be
mounted horizontally or vertically. Consider accessibility.
7.9 Install a 1/2” NPT pipe union between the suction line strainer and the pick
up tube to allow for service on the pick up tube.
7.10 Install the check valve (arrow facing towards the pump) on the bottom of
the pick up tube.
7.11 Install a vacuum gauge in the suction line. This gauge will indicate when
service is needed on the strainer, pump, connections, or fuel level.
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