Weil-McLain NX manual General Specifications, Burner Specifications, Air Tube Combination ATC codes

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General Specifications

Table 2 – Burner Specifications

Capacity

LB & LC

 

Firing rate 0.40 – 1.35 GPH

 

Input 56,000 – 189,000 Btu

 

 

 

LD & LF

 

Firing rate 1.10 - 1.75 GPH

 

Input 154,000 – 245,000 Btu/h

Fuels

U. S No. 1 or No. 2 heating oil only

 

...........(ASTM D396)

 

Canada No. 1 stove oil or No. 2

 

.........furnace oil only

Electrical

Power supply 120 volts AC, 60 Hz,

 

.............single phase

 

Operating load 5.8 Amps max

 

Motor 1/7 hp, 3450 rpm, NEMA 48M

 

frame PSC rotation CCW

 

when facing shaft end

 

Ignition Continuous duty solid-state

 

igniter

Fuel pump

Outlet pressure ...... Note 1

Air tube

ATC code .......See Table 3

 

 

Dimen-

Height (maximum) 12-1/2 inches

sions

Width (maximum) 15 inches

(with

Depth ............ 9-1/4 inches

cover)

Air tube diameter 3-1/4 inches

Note 1. See appliance manufacturer’s burner specifica- tions for recommended outlet pressure.

General Specifications

!Warning–Professional

Service Required

This equipment must be installed, adjusted and put into operation only by a qualified individual or service agency that is:

x Licensed or certified to install and provide technical service to oil heating systems.

x Experienced with all applicable codes, standards and ordinances

x Responsible for the correct installation and commission of this equipment

x Skilled in the adjustment of oil burners using combustion test instruments.

The installation must strictly comply with all applicable codes, authorities having jurisdiction and the latest revision of the National Fire Protection Association Standard for the Installation of Oil-Burning Equipment, NFPA 31 (or CSA B139 and B140 in Canada).

Regulation by these authorities take precedence over the general instructions provided in this installation manual.

Read and understand the manual supplied with this equipment. Incorrect installation, adjustment, and use of

this burner may result in severe personal injury death, or substantial property damage from fire, carbon monoxide poisoning, soot or explosion.

S105

Table 3 – Air Tube Combination (ATC) codes

Firing rate

Head

ATC codes for usable air tube

(gph)

 

 

lengths:

 

(min-max)

 

5”

7”

9”

0.40-1.35

9-Slot

NX50LB

NX70LB

NX90LB

0.40-1.35

6-Slot

NX50LC

NX70LC

NX90LC

1.10-1.75

9-Slot

NX50LD

NX70LD

NX90LD

1.10-1.75

6-Slot

NX50LF

NX70LF

NX90LF

Certifications/approvals

Underwriters Laboratories has certified this burner to comply with ANSI/UL 296 and has listed it for use with #1 or #2 fuel oil as specified in ASTM D396. Low sulfur #1 and #2 fuel oils reduce heat exchanger deposits with all burners compared to the standard fuels. Reduced deposits extend the service interval for cleaning and improve the effi- ciency of the appliance over time. Low sulfur fuels reduce particulate and oxides of nitrogen emis- sions as well. The Oilheat Manufacturers’ Associa- tion recommends these fuels as the preferred fuels for this burner.

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

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Contents Beckett Model NX Burner Information To Be Used Only By Qualified Service Technicians Table of ContentsResponsibilty Hazard DefinitionsGeneral Information To the Owner Burner Configurations NX Burner Specifications for Weil-McLain Ultra Oil BoilersGeneral Specifications General SpecificationsBurner Specifications Air Tube Combination ATC codesBurner label location Site Preparation Inspect/Prepare Installation SiteSupply Required Possible Sooting Asphyxiation HazardFuel Line Valves and Filter Fuel Line InstallationSystem Wiring Burner Preparation Pipe System Prepare the BurnerPressure Control Required Burner Connections Burner PreparationTypical Burner Wiring & Burner Sequence of Operation Start the Burner and Set Combustion Start-up and Initial SettingsStart the Burner Set Combustion with Test Instruments Cover InstallationService Required Professional MaintenanceTrained Service Technician’s Regular Maintenance Electrode tip gap and spacing Nozzle InstallationCheck/Adjust Zero Calibration Check/Adjust ElectrodesBlower Wheel Replacement Blower wheel assemblyReplacement Parts Diagram Professional Maintenance Warranty

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.