Weil-Mclain Burner Specifi Cations; Nx Burner Specifi Cations For Weil-Mclain Ultra Oil Burners - Beckett NX Series Manual

NX Burner Specifications for Weil-
McLain Ultra Oil Boilers
NOTICE
Fozen Plumbing and Water Damage Hazard.
Unoccupied residences in severly cold weather
could experience frozen plumbing in just a few
hours if the heating system fails for any reason.
Consult your HVAC contractor for effective pre-
ventive protection, such as electronic monitor-
ing systems with 24/7 dial-up capability.
Table 1. Burner Confi gurations -
agrees with information below.
Boiler Burner Spec
Model
UO-3 CV WL5703
(See Note1)
UO-3 CV WL5703
UO-4 CV WL5704
UO-5 CV WL5705
UO-3 DV WL5803
(See Notes1 & 2)
UO-3 DV WL5803
(See Note 2)
UO-4 DV WL5804
(See Note 2)
UO-5 DV WL5805
(See Note 2)
1) Shipped as 1.0 GPH Burner Confi guration. The 0.80 GPH input uses same burner as 1.0 GPH input. Replace nozzle, adjust
pump pressure and Head/Air setting as shown above and install 14"x16" blanket on combustion chamber fl oor. (See Mainte-
nance Section for Nozzle Replacement details.)
2) Direct Vent Boilers require that a combustion chamber blanket be installed (blanket supplied with burner).
Figure 1. Burner label location
RWB 6104 WMNX
Verify that burner specifi cation number (on burner carton) and confi guration
Firing Air Tube Insertion
Rate Combina-
(GPH) tion
0.80 NX70LC 1-3/4"
1.00 NX70LC 1-3/4"
1.20 NX90LB 3-1/2"
1.40 NX90LD 3-1/2"
0.80 NX70LC 1-3/4"
1.00 NX70LC 1-3/4"
1.20 NX90LB 3-1/2"
1.40 NX90LD 3-1/2"
Weil-McLain Burner Specifi cations
The table below provides burner specifi cations and
starting air settings for NX burners applied to Weil-
McLain Model UO boilers. Follow all instructions in
this burner manual, the boiler manual and the fuel
pump literature to install, setup and service the burn-
er.
The remainder of this manual contains Infor-
mation to be used ONLY by a qualifi ed Service
Technician.
Primary Alternate
Nozzle Nozzle
0.65 X 60 A 0.65 X 70
o
Delavan Hago
0.75 X 60 B 0.75 X 60
o
Hago Delavan
1.00 X 70 B 1.00 X 70
o
Hago Delavan
1.10 X 70 B 1.10 X 70
o
Hago Delavan
0.65 X 60 A 0.65 X 70
o
Delavan Hago
0.75 X 60 B 0.75 X 60
o
Hago Delavan
0.85 X 60 W 0.85 X 60
o
Delavan Hago
1.10 X 70 B 1.10 X 70
o
Hago Delavan
NOTICE
Fuel Pump
Pressure Adjustment
(psig) Plate Setting
B 150
o
B 175
o
B 140
o
B 160
o
B 150
o
B 175
o
W 190
o
B 160
o
Head/Air
1.75
2.50
4.00
1.50
1.75
2.50
4.00
1.50
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