Beckett NX Manuel D’Utilisation

Page 10

 

RWB 6104 BNX R02

 Allow the burner to run for approximately 5 to 10 
minutes.

 Set the stack or over-fi re draft to the level speci-
fi ed by the appliance manufacturer.

Natural Draft Applications; typically over-fi re 
draft is -0.01” or   -0.02” w.c. 
Direct Venting; typically may not require draft 
adjustment.
High Effi ciency/Positive Pressure Appliances; 
also vary from traditional appliances (see manu-
facturer’s recommendations).

 Follow  these  fi ve steps to properly adjust the 
burner:

Step 1:   Adjust the head/air until a trace of smoke 

is achieved.  This can be accomplished by turn-
ing the screw on the head/air adjustment plate 
assembly to increase air (CCW) or decrease air 
(CW).

Step 2:   At the trace of smoke level, measure the 

CO2 (or O2) . This is the vital reference point for 
further adjustments.  Example: 13.5% CO2 (2.6% 
O2)

Step 3:   Increase the air to reduce the CO2 by 1.5 

to 2 percentage points. (O2 will be increased by 
approximately 2.0 to 2.7 percentage points.)   Ex-
ample: Reduce CO2 from 13.5% to 11.5% (2.6% 
to 5.3% O2).  

Step 4:   Recheck smoke level. It should be Zero.
 

This procedure provides a margin of reserve air 
to accommodate variable conditions. If the draft 
level has changed, recheck the smoke and CO2 
levels and readjust burner, if necessary. 

Step 5:   Once the combustion has been set, tighten 

the lower acorn nut and splined nut on the air ad-
justment assembly. See Figure 5.

Chimney Vent Systems:  Install the burner cover 
and repeat Steps 2 and 4 above. If CO2 increas-
es (O2 decreases), remove the cover and adjust 
the air setting so the CO2 (O2) with the cover 
installed meets the requirements of Step 3.

Direct Vent Systems with outside air ducted to 
burner:  Install the burner cover.

Start and stop the burner several times to ensure 
satisfactory operation. Test the primary control 
and all other appliance safety controls to verify 
that they function according to the manufactur-
er’s specifi cations.

Install the four cover mounting thumb screws in 
the cover mounting plate. 

Install the cover over the mounting plate while 
aligning the side slots with the installed cover 
mounting screws.

1.

2.

3.

4.

5.

6.

1.

2.

Trained Service Technician’s Regular Maintenance

  The following guidelines are provided for routine 

maintenance. 

Replace the oil supply line filter. The line filter car-

tridge must be replaced to avoid contamination of 

the fuel pump and nozzle.

Inspect the oil supply system. All fittings should 

be tight and leak-free. The supply lines should be 

free of water, sludge and other restrictions.

Remove and clean the pump strainer if applica-

ble.

Replace the used nozzle with a new nozzle that 

conforms to the appliance manufacturer’s speci-

fications.

Clean and inspect the electrodes for damage, re-

placing any that are cracked or chipped.

Check electrode tip settings. Replace electrodes 

if tips are rounded.

Inspect the igniter spring contacts.

Clean the cad cell lens surface, if necessary.

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Please read and understand the manual supplied with 

this equipment. This equipment must be installed, adjust-
ed and put into operation only by a qualifi ed individual or 
service agency that is:

Licensed or certifi ed to install and provide technical 

service to oil heating systems.

Experienced with all applicable codes, standards and 

ordinances.

Responsible for the correct installation and commis-

sion of this equipment.

Skilled in the adjustment of oil burners using combus-

tion test instruments.

The installation must strictly comply with all applicable 

codes, authorities having jurisdiction and the latest revi-
sion of the National Fire Protection Association Standard 
for the installation of Oil-burning Equipment, NFPA 31 (or 
CSA B139 and B140 in Canada).

Regulation by these authorities take precedence over the 

general instructions provided in this installation manual.

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WARNING