21
2.
Direct vented – Take a draft reading from the inspection port of the boiler. This over-fire reading will
be a positive pressure. Approximate over- fire draft readings can be found in the burner settings table.
3.
Pump pressure – Install a pump pressure gauge in the oil pump following the oil burner manufacturer’s
recommendations. Adjust the pump pressure as per the preliminary burner settings.
4.
Combustion Set-up – The air settings shown in the table are approximate. The burner must be adjusted
during actual field installed conditions. Failure to do so will result in poor boiler performance and
nuisance service calls. After proper draft and oil pressure have been established:
a.
Begin to close the air band to create a slight trace of smoke as noted on the Bacharach or
equivalent smoke tester scale.
b.
Take a flue gas sample and note the CO
2
reading. It will be about 13% to 14%
c.
Open the air band to reduce the CO
2
approximately 2%.
d.
Check for “0” smoke. Head settings and/or air band may be altered to obtain the above results.
Lock the air band and head setting screws in place.
The above procedure will give a built in margin to ensure clean operation throughout the heating season.
Should draft conditions vary, lint accumulate in the fan, heavier oil delivered, or other adverse conditions be
encountered you will have a reasonable margin of built in protection before smoke generation begins.
Preliminary Burner Settings
Boiler Burner
Nozzle
Air
Setting
Turbulator/
Head
Pump Press
CO
2
Draft
Overfire
Smoke
SL375 Riello
F5 .65x80
o
B 2.50
0.5
150
PSI
11.0% +.02 #0
Beckett
AFG
.60x70
o
B 6/0
N/A 160
PSI
11.4%
+.02 #0
Beckett
NX
.60x60
o
B N/A
1.50 160
PSI
11.0% +.02 #0
HeatWise
P1
.60x60
o
A 8.00
4.0
150
PSI
11.0% +.02 #0
SLD375 Riello
BF5 .65x80
o
B 3.25
0.5
150
PSI
11.0% +.05 #0
Beckett
NX
.60x60
o
B N/A
1.50 160
PSI
12.0% +.05 #0
SL4100 Riello
F5
.85x80
o
B 3.25
0.5
150
PSI
11.0% +.04 #0
Beckett
AFG
.75x60
o
B 7/1
N/A 160
PSI
11.3%
+.04 #0
Beckett
NX
.85x60
o
B N/A
3.00 140
PSI
11.0% +.04 #0
HeatWise
P2
.85x80
o
B 7.50
4.0
150
PSI
10.5% +.04 #0
SLD4100 Riello
BF5
.85x80
o
B 4.75
1.0
150
PSI
11.0% +.08 #0
Beckett
NX
.85x60
o
B N/A
3.00 140
PSI
11.0% +.08 #0
SL5125 Riello
F5 1.00x80
o
B 3.00
4.0
150
PSI 11.0% +.07 #0
HeatWise
P2
1.00x80
o
B 4.00
6.0
160
PSI 10.5% +.07 #0
Beckett
NX
1.00x60
o
B N/A
4.00
150
PSI 11.0% +.07 #0
SLD5125 Riello
BF5 1.00x80
o
B 4.75
4.0
150
PSI 11.0% +.11 #0
Beckett
NX
1.00x60
o
B N/A
4.00
150
PSI 11.5% +.11 #0
SL6150 Riello
F5 1.25x80
o
B 5.75
4.0
150PSI 11.0% +.09 #0
Beckett
NX
1.25x45
o
B N/A
2.00
140
PSI 11.1% +.09 #0
HeatWise
P2
1.25x70
o
B 5.50
8.0
150
PSI 11.5% +.09 #0
SL7175 HeatWise
P2
1.75x70
o
B 8.00
12.0
100PSI 12.0% +.11 #0
Beckett
NX
1.35x45
o
B N/A
3.00
150
PSI 12.0% +.11 #0
Control Circuit Safety Checks
Check the safety controls on the boiler after completing the oil burner adjustments. A safety control check
for satisfactory performance must be performed.
