Midco International Inc.
3
8470 23
Installation
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If the incinerator is designed only for No. 4 waste, the level can be lowered to bring the fl ame to
fi re directly on the smaller loads characteristic of this type of operation. The opening through which
the burner fi res should be of a diameter only large enough to accommodate the Blast Tube (4 ¼″
diameter x 3″ minimum long.) Do not allow the Blast Tube to protrude into the incineration chamber.
If necessary, build an extension outside of the incinerator wall to increase wall depth.
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To change the Mounting Flange to its alternate position, horizontal or 10° down fi ring, remove
the four (4) screws that attach it to the burner, rotate the fl ange 180° and reinstall the screws.
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Before mounting the burner, check that the Blast Tube and Blower Housing are clear of foreign
material and that the Main Gas Port and Nozzle Support is clean and undamaged.
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If the incinerator is located outdoors, the burner and all of its components, except the Main
Manual Shut-Off Valve, must be protected from weather. The Midco
®
Accessory Weatherhood will
provide such protection.
CAUTION: If the incinerator is of the down draft design, make sure that a direct draft vent
opening of approximately 10 square inches has been put through the top of the drop
section(s) to provide for the venting of any gas leakage. See Figure 1.
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The size and type of material used for the vent connector and chimney must conform to the
recommendations of the incinerator manufacturer, as well as local and national codes. This is
especially true where high fl ue gas temperatures are encountered.
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When natural draft is used and the chimney height is over 25 feet, a barometric damper of
the same size as the vent connector should be installed. If the chimney is high enough to make it
diffi cult for the barometric to maintain a maximum incineration chamber over-fi re draft, 0 to minus
0.5″ W.C., a fi xed damper should be installed in the vent connector between the barometric and
chimney to restrict the chimney draft to a point within the controlling capacity of the barometric. After
fi nal setting, the damper should be permanently fastened into position per ANSI Z223.1-latest edition
“National Fuel Gas Code”, or latest edition available from American National Standards Institute to
prevent tampering.
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The supply piping to the burner should branch off from the main line as close to the source as
possible (NATURAL gas meter or PROPANE tank regulator). When branching off from an existing
gas line, do not tap off the bottom of a horizontal section. Use new black pipe and malleable
fi ttings free from cutting and threading burrs or defects. Use pipe joint compound resistant to liquid
petroleum gases when using either NATURAL or PROPANE gas. Piping must comply with the local
and national codes. If the burner piping must be rearranged because of space limitations, be sure to
carry out the general confi guration shown in Figure 2.
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A suitable Main Gas Pressure Regulator should be installed as shown in Figures 1 or 2 Choose
a regulator(s) to adjust the available gas pressure to the pressure shown in SPECIFICATIONS,
page 2.
CAUTION: The regulated gas pressures must not exceed 14
″
W.C. or Main Automatic
Gas Valve and Ignitor Regulator will be damaged. If excessive gas pressure is prevalent, the
regulator must be a tight shut-off type to prevent high pressures from developing during
stand-by.
Installation
Continued
Figure 1 -
Typical Installation
IV Chimney, Vent
Connector * and
Draft Control
*Formerly referred to
as Flue Pipe
V Piping
