Beckett SDC 24 VDC, User Manual

5

24 Vdc SDC

 Burner Manual

Section: Nozzle Assembly Maintenance

Correct Nozzle and Flow 
Rate Required

Incorrect nozzles and 

fl

 ow rates could 

result in impaired combustion, under-

fi

 ring,  over-

fi

 ring, sooting, puff-back of 

hot gases, smoke and potential 

fi

 re  or 

asphyxiation hazards. 

Use only nozzles having the brand, 

fl

 ow rate (gph), 

spray angle and pattern speci

fi

 ed by the appliance 

manufacturer.
Follow the appliance manufacturer’s speci

fi

 cations for the 

required pump outlet pressure for the nozzle, since this 

affects the 

fl

 ow rate. 

Nozzle manufacturers calibrate nozzle 

fl

 ow rates at 

100 psig.
When pump pressures are higher than 100 psig, the 

actual nozzle 

fl

 ow rate will be greater than the gph 

stamped on the nozzle body. (Example: A 1.00 gph 

nozzle at 140 psig = 1.18 gph)

Securely tighten the nozzle (90 torque inch pounds). For typical 

nozzle 

fl

 ow rates at various pressures refer to 

Table 2

.

y

y

Use care when removing or 
installing an oil nozzle 

A damaged nozzle could cause impaired combustion, 

sooting, puffback of hot gases, oil leakage and 

potential 

fi

 re or asphyxiation hazards.

Inspect the nozzle adapter to insure that the sealing 

surface is not grooved or scratched.
To insure that the nozzle functions properly, check the 

ori

fi

 ce and strainer for dirt, scratches or other damage 

before installation.
Do NOT attempt to install or remove a nozzle without 

securing the adapter to prevent seriously damaging 

the alignment.
Use care when handling the nozzle line assembly 

to prevent changing the electrode tip settings or 

damaging the ceramic electrode insulators. 
Ensure the electrode settings match the values shown 

in 

Figure 3

.

y

y

y

y

y

B. Check/Adjust Electrodes

Check the electrode tip settings. Adjust if necessary 
to comply with the dimensions shown in 

Figure 3

. To 

adjust, loosen the electrode clamp screw and slide/rotate 
electrodes as necessary. Securely tighten the clamp 
screw when 

fi

 nished.

If the nozzle is already installed, remove the nozzle 
line assembly to verify that the nozzle size and spray 
pattern are correct for the application (per equipment 
manufacturer’s information). Verify that the electrode 
tip settings comply with 

Figure 3

.

3.

Item #

Description

1

Electrode Contact (3” ATC or extension over 3”)

2

Nozzle Line

3

Spider spacer assembly

4

Static Plate

5

Electrode clamp

6

Electrode clamp retaining screws

7

Nozzle line setscrew

8

Electrode Insulator

9

Nozzle adapter

10

Nozzle tip

11

Electrode tip

Figure 2. Nozzle, Line & Electrode Assembly

Air Tube Length

Dimension ‘S’

2-5/8” to 3”

1-3/8”

3-5/8” to 4-1/2”

1-5/8”

over 4-7/8”

2-13/32”

Figure 3. Electrode Tip Setting

1/4” ABOVE

CENTER

5/32” GAP

1/8” NOZZLE-TO-TIP

SPACING

10

11

6

8

1

2

7

4

9

3

5

4

90

°

Contacts to be parallel with
horizontal center line within 2°.

Electrode gap to be centered
with nozzle center.