Dunkirk Excelsior EXB Series User Manual
Page 49
49
TABLE 14a: BECKETT DIRECT VENT PRELIMINARY BURNER SETTINGS
Boiler
Model
Head
Type
Insertion
Depth
Firing
Rate
[GPH]
Combus-
tion liner
Nozzle
Mfr.
Nozzle
Type
Pump
Pressure
[PSI]
Air
Setting
Pressure
Switch
Setpoint
Rated
AFUE
Efficiency
[%]
4075
6 Slot
2.5"
0.75
Oval
Delavan 0.60x60B
150
1.5
0.65" WC
86.0
4095
6 Slot
2.5"
0.95
Oval
Hago
0.75x60B
155
4.0
0.65" WC
85.0
5100
6 Slot
2.5"
1.00
None
Delavan 0.75x45B
175
4.0
0.85" WC
86.5
5115
6 Slot
2.5"
1.15
V5
Hago
1.00x60B
140
1.8
0.85" WC
85.0
5135
6 Slot
2.5"
1.35
V5
Delavan 1.10x60B
150
2.5
0.85" WC
84.0
6130
9 Slot
2.5"
1.30
V6
Danfoss 1.00x45B
175
2.0
0.65" WC
86.5
Timings
Pre-purge
15 seconds
Post-Purge
2 minutes
17 - OIL BURNER, NOZZLE, & AIR SETTINGS
Table 14 - Beckett NX (Direct Vent) Preliminary Burner Settings
TABLE 14b: BECKETT/ECR PART NUMBERS
Boiler
Model
Beckett
Oil Burner
Model
ECR Oil Burner
Part Number
4075
NX70LC
240007531
4095
NX70LC
240009393
5100
NX70LC
240007532
5115
NX70LF
240009395
5135
NX70LF
240009396
6130
NX70LD
240007533
Burner settings provided are for initial startup only. Final adjustments must be made using combustion test
instruments.