GB

NPTF - NPT pipe adapter

The BF burner you have purchased is shipped with an NPTF to NPT fitting. This fitting is the connection point for the oil line from the oil tank or the in-line oil filter. In some locations, fit- tings with the NPTF male thread are difficult to obtain.

In these areas, a more common NPT thread male fitting or pipe may be used. To accommodate this NPT thread, the BF NPT-NPTF adapter is supplied. This brass adapter is installed as shown below.

Installation of NPT-NPTF pipe adapter

1The brass adapter may be threaded directly into the steel female fitting already installed in the BF burner chassis. No pipe sealant is required since this thread is self-sealing.

2Ensure that the brass adapter is tightly fitting into the steel adapter.

3Fit the pipe or fitting used to connect the oil supply system into the brass adapter.

Use pipe sealant to ensure a leak-free joint.

Dryseal NPTF to NPT adapter

Bulkhead fitting

BF burner chassis wall

Retaining nut

D7522

TWO LINE (LIFT SYSTEM) (Accessory package required)

If a two-line system is required, install the By-pass plug. The by-pass plug is installed in the return port of the pump. A 2.5-mm hexagonal key is to be used to install the plug.

DO NOT use an inch size hexagonal key; damage to the by-pass plug may result.

A)Suction and return lines should be sized in accordance with local codes. The suction line should extend down near the bottom of the oil tank. The return line should terminate near the top of the oil tank.

B)Suction and return lines should be sized in accordance with local codes and both should extend to the same depth inside the fuel tank. Be sure there are no air leaks or blockages in the piping system. Any obstructions in the return line will cause failure of the pump shaft seal. Do not exceed the pipe lengths indicated in the table.

Install the required fittings (NPT THREAD) in the SUCTION LINE and RETURN LINE CONNECTION FITTINGS. Attach the required tubing to these fittings.

2 LINE (LIFT) SYSTEM-PIPE LENGTHS

 

H

3/8” OD

1/2” OD

FT

 

M

FT

M

FT

M

0.0

 

0.0

115

35

330

100

1.5

 

0.5

100

30

330

100

3.0

 

1.0

80

25

330

100

5.0

 

1.5

65

20

295

90

6.5

 

2.0

50

15

230

70

9.5

 

3.0

25

8

100

30

11

 

3.5

20

6

65

20

H

ATTENTION:

do not exceed

pipe lengths

indicated in chart!

A

P

D7524

To install the by-pass plug:

B

1)

Remove the return plug (7).

2)

Install the by-pass plug (4) using the 2.5 mm hexagonal key.

 

3)

Connect the return line connection pipe to the return port (7)

 

 

of the pump and tighten securely.

 

H

WARNING:

-Pipe dope or Teflon tapes are NOT to be used on any direct oil connection to the fuel pump.

-The height ‘P’ in Pipe Length Charts should not exceed 13 feet (4 m).

-The vacuum should not exceed 11.44 inches of mercury.

IMPORTANT: An external, appropriately listed and certified oil filter must be placed in the fuel line between the fuel tank and the burner pump.

3398

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Weil-McLain 800060000-Brn-PO Rie BF5 manual Nptf NPT pipe adapter, TWO Line Lift System Accessory package required
Page 9 Page 11

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