Weil-McLain NX ユーザーズマニュアル

WM  550-141-996/1105

 

  

RWB 6104WMNX R1005

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-

sions

(with 

cover)

Height (maximum)  12-1/2 inches
Width (maximum)  15 inches
Depth  ............ 9-1/4 inches
Air tube diameter  3-1/4 inches

 

Firing rate 

(gph)

Head

ATC codes for usable air tube 

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

  Underwriters Laboratories has certifi ed this burner 

to comply with ANSI/UL 296 and has listed it for 
use with #1 or #2 fuel oil as specifi ed  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.

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.

S105

!

General Specifi cations