Weil-McLain NX General Specifications, Warning-Professional Service Required, Burner Specifications

Models: NX

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General Specifications

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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Weil-McLain NX General Specifications, Warning-Professional Service Required, Burner Specifications, Certifications/approvals