Weil-McLain NX Weil-McLainBurner Specifications, qualified Service Technician, Burner Configurations

Weil-McLain Burner Specifications

NOTICE

The remainder of this manual contains Information to be used ONLY by a

qualified Service Technician.

NX Burner Specifications for Weil-McLain Ultra Oil Boilers

Verify that burner specification number (on burner carton) and configuration agrees with information below.

Table 1. Burner Configurations

The table below provides burner specifications 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.

Boiler	Burner	Firing	Air Tube	Inser-	Primary	Alternate	Fuel	Head/
Model	Spec	Rate	Combina-	tion	Nozzle	Nozzle	Pump	Air
		(GPH)	tion				Pres-	Adjust-
							sure	ment
							(psig)	Plate
								Setting
UO-3 CV	WL5703	0.80	NX70LC	1-3/4”	0.65 X 60oA	0.65 X 70oB	150	1.75
	(See Note1)				Delavan	Hago
UO-3 CV	WL5703	1.00	NX70LC	1-3/4”	0.75 X 60oB	0.75 X 60oB	175	2.50
					Hago	Delavan
UO-4 CV	WL5704	1.20	NX90LB	3-1/2”	1.00 X 70oB	1.00 X 70oB	140	4.00
					Hago	Delavan
UO-5 CV	WL5705	1.40	NX90LD	3-1/2”	1.10 X 70oB	1.10 X 70oB	160	1.50
					Hago	Delavan
UO-3 DV	WL5803	0.80	NX70LC	1-3/4”	0.65 X 60oA	0.65 X 70oB	150	1.75
	(See Note1)				Delavan	Hago
UO-3 DV	WL5803	1.00	NX70LC	1-3/4”	0.75 X 60oB	0.75 X 60oB	175	2.50
					Hago	Delavan
UO-4 DV	WL5804	1.20	NX90LB	3-1/2”	1.00 X 70oB	1.00 X 70oB	140	4.00
					Hago	Delavan
UO-5 DV	WL5805	1.40	NX90LD	3-1/2”	1.10 X 70oB	1.10 X 70oB	160	1.50
					Hago	Delavan

1)Shipped as 1.0 GPH Burner Configuration. 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 floor. (See Maintenance Section for Nozzle Replacement details.)

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WM 550-141-996/1105 RWB 6104WMNX R1005