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FW SERIES


GAS FIRED BOX FORGING FURNACES

TXXX 2100
F (1135C). UNDER CONSTRUCTION

FEATURES

ECLIPSE BURNER WITH 50:1 TURNDOWN RATIO
The furnace is heated with one Eclipse Model 50 MMB Minimatic burner with integral air and gas butterfly valves. The burner is mounted in the furnace with a special 2100F burner block and holder. The blower has an 1/8 H.P. motor. This burner features a 50:1 gas turndown ratio which allows extremely good temperature control over a wide range of temperatures. All piping and controls are included. The gas system includes two solenoid shut offs and manual shut off valve. The control of firing rate is done with a motorized butterfly valve which controls the amount of natural gas and combustion air relative to a 4-20 milliamp signal from the temperature control. A pilot gas train is also included with needle valve for adjustment and solenoid shut off valve. A main gas regulator and main gas shut off valve is included. The burner is located in the back of the furnace at the top of the chamber, firing over the load. The vestibule on the top front of the furnace hangs down so that the flame does not impinge directly on the door. There is one flue at the back top. This location vs. the location of the burner makes the burner flame circulate all the way around the inside of the chamber for maximum efficiency. The burner can deliver up to 500,000 total Btu/Hr with a minimum of 10,000 Btu/hr.

FLAME SAFETY SYSTEM
The burner is ignited with a spark plug actuated from the control panel. The burner includes a UV (Ultra Violet) Sensor and electronic flame safety. Before ignition the system goes through a timed purge with the combustion air. A combustion air pressure switch and high/low pressure switch are included. Safety interlocks and purge condition are annunciated on the control panel.

HIGH TEMPERATURE UNIFORMITY
The furnace is uniform to within +/ 25F (+/-12C) above 1200F (650C) within the working dimensions.

EFFICIENT CERAMIC FIBER INSULATION
The sides, back, door and top surfaces are insulated with 2300F ceramic fiber modules, 6” thick, 10 LB density. No asbestos is used.

STRONG CASTABLE REFRACTORY BOTTOM
The bottom is insulated with 6” of lightweight, strong and highly insulating 2200F castable. Loads can be directly placed on this strong bottom. Optional castable piers, and ceramic, silicon carbide, serpentine or flat alloy hearth plates are available.

HEAVY DUTY CASE WITH INTEGRAL STAND
The furnace case is constructed of 10 gauge steel with structural stiffeners, lifting rings and leveling bolts. The case is primed with a high temperature (800F) silicone based paint and finished with heat resistant enamel.

DOUBLE PIVOTED HORIZONTAL DOOR
The standard furnace door has two pivots which allow it to open like a parallelogram. This keeps the hot face of the door away from the operator. A door vestibule made of ceramic fiber board surrounds the door perimeter. The top vestibule drops down 6” from the top to prevent the burner flame from impinging directly on the door.

DIGITAL PID CONTROL SYSTEM WITH HIGH LIMIT
The standard control is a Honeywell UDC 2300 digital PID 3 mode tuning control. A Honeywell UDC 2300 high limit control is also included. All fuses and controls are located in a NEMA 12 panel. The thermocouple is dual Type K with an Inconel protection tube. Thermocouple break protection is included. Limit switches shut off burner if the door is opened. All voltage is 120 volts. The furnace is fully fused. Single point power connection.

MEETS NEC, OSHA AND FM CODES
The wiring of the furnace meets the National Electrical Code. The combustion system meets FM standards. IRI standards can be quoted as an option. Furnace meets all OSHA codes in effect at manufacture. Furnace drawings can be submitted to FM or IRI for approval.

FACTORY TESTING AND INSTRUCTIONS
The furnace is completely tested in our factory up to maximum temperature. A very complete instruction manual is included with the furnace.

ONE YEAR WARRANTY
The furnace is warranted for one year.


OPTIONS


  • BLOWER FILTERS
  • VERTICAL DOORS: Counterbalanced vertical door is available. Manual hand crank, pneumatic or electric operation.
  • CONTROL, RECORDER AND ELECTRICAL OPTIONS
  • AGITATED, HEATED QUENCH TANKS: These provide superior quenching results.
  • SPECIAL HEARTHS AND LOADERS: Castable piers, silicon carbide, alloy hearths, load baskets and serpentine alloy hearths are available. Hydraulic lift fork type loaders are available. See Options Page.
  • ALLOY RETORTS: For controlled atmosphere use.
  • ON SITE START UP SERVICE

SPECIFICATIONS

MODEL NUMBER
WORKING DIMEN
INSIDE DIMEN
OUTSIDE DIMEN
MAX LOAD WGHT
APPRX SHIP WGHT
 
W
H
D
W
H
D
OW
OH
OD
LBS
LBS
XLM 244
24
22
24
26
28
29
56
68
60
500
2000
XLM 246
24
22
36
26
28
41
56
68
72
750
2400
XLM 248
24
22
48
26
28
53
56
68
84
1000
2900
XLM 272
24
22
72
26
28
77
56
68
108
1500
3700
XLM 3336
30
28
36
32
34
41
62
74
72
900
2900
XLM 3348
30
28
48
32
34
53
62
74
84
1250
3300
XLM 3372
30
28
72
32
34
77
62
74
108
1875
4300
XLM 3636
36
34
36
38
40
41
68
80
72
1125
3200
XLM 3648
36
34
48
38
40
53
68
80
84
1500
3800
XLM 3672
36
34
72
38
40
77
68
80
108
2250
4900
Dimensions are in inches. Weight is in pounds. Specifications subject to change without notice.

OTHER SIMILAR FURNACES

SEE ALSO MULTI-BURNER GAS BOX FURNACES: XLG Series


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Copyright © 2002, 2003 L&L Special Furnace Co., Inc.