Master Lock B35CEH, B70CEH, B150CEH Nozzle Assembly, Fuel and AIR Line Replacement Proper Routing

OWNER’S MANUAL

SERVICE

PROCEDURES

Continued

NOZZLE ASSEMBLY

1.	Remove upper shell (see page 8).
2.	Remove fan (see page 13).
3.	Remove fuel and air line hoses from
	nozzle assembly (see Figure 17, 18 or 19).
4.	Turn nozzle assembly 1/4 turn to left
	and pull toward motor to remove (see

Combustion

Chamber

Nozzle Adapter

Bracket

Air Line

Hose

Photocell Bracket

Nozzle/

Adapter

Assembly

Fuel Line

Hose

FUEL AND AIR LINE

REPLACEMENT AND

PROPER ROUTING

1.	Remove upper shell (see page 8).
2.	Remove side cover screws using 5/16"
	nut driver.
3.	Remove side cover.
4.	Inspect fuel and air line hoses for cracks
	and/or holes. If fuel line hose is damaged,
	disconnect from nozzle adapter (see Fig-
	ure 17, 18, or 19) and from fuel filter (see

	Figure 20).
5.	Place plastic hex-body into vise and
	lightly tighten.
6.	Carefully remove nozzle from the
	nozzle adapter using 5/8" socket
	wrench (see Figure 21).
7.	Blow compressed air through face of
	nozzle. This will free any dirt in nozzle
	area.
8.	Inspect nozzle seal for damage.
9.	Replace nozzle into nozzle adapter un-
	til nozzle seats. Tighten 1/3 turn more
	using 5/8" socket wrench 4.5 to 5.1 N-
	m (40 to 45 in-lbs). See Figure 21.
10.	Attach nozzle assembly to burner strap.
11.	Attach fuel and airline hoses to nozzle
	assembly. See Fuel and Airline Re-
	placement and Proper Routing.
12.	Replace fan (see page 13).
13.	Replace fan guard and upper shell (see
	page 8).

Combustion

Chamber

Nozzle

Adapter

Bracket

Photocell

Bracket

Nozzle/

Adapter

Assembly

Air Line

Hose

Fuel Line Hose

Figure 17 - Removing Air and Fuel Line

Hoses (B35CEH and B70CEH Models

Only)

Figure 18 - Removing Air and Fuel Line Hoses (B100CEH Model Only)

Combustion

Chamber

Nozzle Adapter

Bracket

Photocell

Bracket

Air Line

Hose Nozzle/

Adapter

Assembly

Fuel Line Hose

Figure 19 - Removing Air and Fuel Line Hoses (B150CEH Model Only)

Combustion
Chamber	Nozzle/
	Adapter
	Assembly

Figure 20 - Removing Nozzle/Adapter Assembly

Nozzle Face

Nozzle Seal

Nozzle

Nozzle Adapter

Air Line Fitting

Fuel Line Fitting

Figure 21 - Nozzle and Nozzle Adapter

page 8). If air line hose is damaged, dis-

connect from nozzle adapter (see Figure

17, 18, or 19) and from barb fitting on

pump end cover (see Figure 22).

5. Install new air and/or fuel line. Attach

one end of air line hose to barb fitting

on pump end cover (see Figure 22) and

the other end to nozzle adapter (see

Figure 17, 18, or 19). Attach one end

of fuel line hose to fuel filter (see page

8) and the other end to nozzle adapter

(see Figure 17, 18, or 19).

For B35CEH and B70CEH model heat- ers, route air and fuel lines approxi- mately as shown in Figure 17.

Note: Hoses are not to be touching pho- tocell bracket.

For B100CEH model heater, route air and fuel lines approximately as shown in Figure 18.

Note: Hoses are not to be touching pho- tocell bracket.

For B150CEH model heater, route air and fuel lines approximately as shown in Figure 19.

Note: Hoses are not to be touching pho- tocell bracket

6.Replace side cover.

7.Replace upper shell and fan guard (see page 8).

Pump End Cover

Barb Fitting

Air Hose

Figure 22 - Air Hose to Barb FItting

Continued

105398 11