Weil-McLain NX - Manual (Page 5)

WM 550-141-996/1105 Page 5
RWB 6104WMNX R1005
General Specifi cations
Table 2 – Burner Specifi cations
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
Note 1. See appliance manufacturer’s burner specifi ca-
tions for recommended outlet pressure.
Table 3 – Air Tube Combination (ATC)
codes
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
Certifi cations/approvals
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.
•
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.
S105
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.
!
General Specifi cations