Louisville Tin and Stove 90N30A Manual Do Utilizador

After the floor furnace has been burning for five minutes, hold a match or candle under the draft hood at the air intake area.  If
the vent system is working properly, the flame will be pulled into the air inlet of the draft hood.  If the vent system is not working
properly, turn the floor furnace off immediately and refer to the installation instructions or local code for proper installation
procedure.

PILOT FLAME ADJUSTMENT
Pilot flame should envelop 3/8 to
1/2 inch of the tip of the generator.

  3/8 to
       1/2”

FIGURE 17

Model No.

0 to      2,000 -    4,000 -     6,000 -      8,000 –

                        2,000’  4,000’     6,000’      8,000’     10,000’
90N30A

  38          41          42             43             44

90N50A

  30          31          31             32             35

90N65A

  26          28          29             30             30

ORDER KIT #49800  44-1 HIGH ALTITUDE KIT

90N75A

  33          36          37             38             41

ORDER KIT #49850   2287-2 HIGH ALTITUDE KIT

Model No.

0 to      2,000 -    4,000 -     6,000 -       8,000–

                      2,000’    4,000’     6,000’      8,000’     10,000’
90P30A

  1/16       53          53             54             54

90P50A

  47          49          49             50             51

90P65A

  43          44          45             47             48

ORDER KIT #49800  44-1 HIGH ALTITUDE KIT

90P75A

  51          52          52             53             54

ORDER KIT #49850   2287-2 HIGH ALTITUDE KIT

After the floor furnace has been burning 15 minutes, remove the bottom pan from the outer casing exposing the complete
burner assembly.  Loosen the screw at the bottom side of the sliding air shutter.  Slide the air shutter closed until yellow tips
start to appear at the top of the flame.  See Figure 19.  (75,000 BTU floor furnace has two burners, both of which may need
adjustment).  Now open the shutter slightly beyond the point that the yellow disappears and the flame burns blue.  (See
Figure 20).  Airborne dust particles may cause flashes or streaks of yellow flame as they are drawn into the flame but will
have no effect on the efficiency of the floor furnace.  If you are satisfied that the burner is properly adjusted, tighten the set
screw to lock the shutter in position.  Replace the bottom pan.  Check air shutter setting at least twice each season to assure
that changing conditions are not causing yellow tipping.

Manifold Tube

Sliding Air Shutter

BURNER

Set Screw

YELLOW

IMPROPER FLAME ADJUSTMENT

BLUE

CORRECT FLAME ADJUSTMENT

FIGURE 18

FIGURE 19

FIGURE 20

Page 12

Refer to Figure 17 for the correct size pilot flame.  If adjustment is necessary,
refer to Figure 12 for the location of the pilot adjustment screw.  Using a
standard screwdriver, remove the pilot adjustment screw cover.  Insert a
small screwdriver into the pilot adjustment screw and turn clockwise            to
decrease  the  flame  or counterclockwise

     to increase the flame.

If the flame is too low, the safety pilot may cause all of the gas to be cut
off.  NOTE:  The gas supply to the pilot is unregulated.  When line pressure
exceeds 7” Natural Gas, or 11” L.P. Gas, a pilot adjustment must be
made.

This appliance is orificed at the factory for elevations up to 2,000 feet.  If
installed above 2,000 feet, the BTU input must be reduced 4% per 1,000
feet.  See the following orifice chart for the proper orifice for a specific
elevation.