Weil-Mclain Burner Specifi Cations; Nx Burner Specifi Cations For Weil-Mclain Ultra Oil Boilers - Weil-McLain UO-3 CV Instruction Manual

Weil-McLain Burner
Specifi cations
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 preventive protection,
such as electronic monitoring systems with 24/7 dial-up
Table 1. Burner Confi gurations - Verify that burner specifi cation number (on burner carton) and confi guration agrees
with information below.
Boiler
Burner Spec
Model
WL6403
UO-3 CV
(See Note1)
UO-3 CV WL6403
UO-4 CV WL6404
UO-5 CV WL6405
WL6503
UO-3 DV
(See Notes1 & 2)
WL6503
UO-3 DV
(See Note 2)
WL6504
UO-4 DV
(See Note 2)
WL6505
UO-5 DV
(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 Maintenance 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
Weil-McLain Ultra Oil NX Burner Manual
Firing
Air Tube
Rate Insertion
Combination
(GPH)
0.80 NX70LC
1.00 NX70LC
1.20 NX90LB
1.40 NX90LD
0.80 NX70LC
1.00 NX70LC
1.20 NX90LB
1.40 NX90LD
Section: Weil-McLain Burner Specifi cations
NX Burner Specifi cations for Weil-McLain
Ultra Oil Boilers
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 burner.
ONLY by a qualifi ed Service Technician.
Primary Nozzle
0.65 X 60°A
1-3/4"
Delavan
0.75 X 60°B
1-3/4"
Hago
1.00 X 70°B
3-1/2"
Hago
1.10 X 70°B
3-1/2"
Hago
0.65 X 60°A
1-3/4"
Delavan
0.75 X 60°B
1-3/4"
Hago
0.85 X 60°W
3-1/2"
Delavan
1.10 X 70°B
3-1/2"
Hago
The remainder of this manual
contains Information to be used
Fuel Pump
Alternate
Pressure
Nozzle
(psig)
0.65 X 70°B
150
Hago
0.75 X 60°B
175
Delavan
1.00 X 70°B
140
Delavan
1.10 X 70°B
160
Delavan
0.65 X 70°B
150
Hago
0.75 X 60°B
175
Delavan
0.85 X 60°W
190
Hago
1.10 X 70°B
160
Delavan
Head/Air
Adjustment
Plate Setting
1.75
2.50
4.00
1.50
1.75
2.50
4.00
1.50
5