Reznor RA 140 Troubleshooting Guide download pdf (Page 11)

Form I-RA/D 140/235 (Version A), Mfg No. 110318 Rev 3, Page 11

Remote Fuel Pump

The Model OT-250 tank has a platform designed for attaching the remote

fuel pump.

• Attach the fuel pump legs permanently either on the platform,

directly to a field-supplied tank, or in a location very near to the oil

tank.

• Mount the remote pump assembly in an upright, horizontal position

as shown in the illustration.

NOTE: Do not mount the pump assembly in a vertical or

inverted position.

Pump

Supply Lines

Installation

CAUTION: Do not use TEFLON

based pipe dope or

TEFLON

tape to seal any pipe connections. (TEFLON

is a registered trademark of DuPont Chemical.) Use of

TEFLON

based pipe dope or TEFLON

tape will void

the pump warranty.

Nut, 3/8 tube size,

5/8-18 straight thread

- at the fuel inlet con-

nection on the heater

service tray

Relief

Valve

50 psi

Check

Valve

1/2 Pipe Plug

(for priming line)

Return Line to Tank

(1/8 NPT black iron pipe)

Vacuum Gauge

(install in upright position)

Hex Bushing

1/2 x x 3/4

90° Elbow , 1/2

End must

be open.

Suction Line

(Standard 1/2 pipe)

Foot Valve

Strainer

Filter

Pump Inlet

Manifold

Pump

1/4 NPT

Connection

for Fuel Line

to Heater

Male Connection 3/8 Tube Size,

1/4 NPT, 5/8-18 Straight Thread;

Nut, 3/8 Tube Size, 5/8-18 Straight Thread

3/8 O.D. Copper

Tubing to Heater

Supply Lines

Read this section carefully before installing any supply lines. Since a suction line leak is nearly impossible to

find, take your time to assure all connections are leak-free during installation. Supply lines and fittings are

furnished by the installer. See the following illustration for minimum fittings required. Length of pipe and

tubing depends on the installation.

Run the suction line, using 1/2” standard black iron pipe, between the inlet

side of the filter and the foot valve. (Refer to the illustration.) A fuel line

filter with a cleanable strainer, a foot valve, a foot valve strainer, and a

vacuum gauge are provided with the heater. To prevent air from entering

the line, do not use union connections. Install the suction line components

Suction Line (portion

of supply line from

foot valve to pump)

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Reznor RA 140 Troubleshooting Guide Page 11

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