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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Weil-McLain manual NX Burner Specifications for Weil-McLain Ultra Oil Boilers, Burner Configurations

NX specifications

The Weil-McLain NX is a state-of-the-art boiler line that showcases the brand's commitment to energy efficiency, reliability, and innovative technology. Designed for both residential and commercial applications, the NX series is ideal for those seeking powerful heating solutions with minimal environmental impact.

One of the standout features of the Weil-McLain NX is its impressive efficiency rating. The boiler is designed to maximize energy use, ensuring that a greater percentage of fuel is converted into usable heat. This efficiency not only translates to lower utility bills for consumers but also reduces overall carbon emissions, making the NX an eco-friendly choice for heating.

The NX series boasts a robust cast-iron heat exchanger, which is known for its durability and longevity. Cast iron is not only resistant to thermal shock but also provides superior heat retention, enhancing the system's efficiency even further. This heat exchanger design allows for a longer lifecycle and reduced maintenance needs, making it a reliable option for homeowners and businesses alike.

In terms of technology, the Weil-McLain NX comes equipped with advanced control systems that provide precise temperature management and safety features. The intuitive control interface allows for easy adjustments, ensuring that users can tailor their heating experience to their specific needs. Features such as outdoor reset control and multiple stage modulation contribute to optimized performance and energy savings.

The NX is also designed with flexibility in mind. Its compact size allows for installation in a variety of spaces, making it suitable for retrofitting older systems. Additionally, the boiler is compatible with a range of heating applications, from radiant floor heating to baseboard systems, providing versatility in heating configurations.

As for safety, Weil-McLain has incorporated several safety features in the NX series. High-limit controls, flame rollout switches, and low water cutoff devices are standard, ensuring that the system operates safely and efficiently.

In summary, the Weil-McLain NX is a premium choice for anyone in the market for a reliable and efficient heating solution. With its high efficiency, durable construction, advanced technology, and versatile applications, the NX series stands out as a top contender in the boiler market, catering to the demands of modern heating needs while prioritizing sustainability and safety.