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IMPORTANT
Ir As an owner of a new furnace you need to know the following information:
Ifyour home is locatedat an elevation above 2,000 feet, the burnerorificein yourfurnace will need to be der-
ated. Please contact the nearest authodzed Service Center to have this procedure performed properly.
Your dealer or gas company may have already applied the proper deration for your unit. If so, they should be
able to advise you as such. If not, you need to have the deration made to insure continued use of your furnace.
Not having the unit derated properly will eventually render the furnace inoperable.
Deration of the odfice for furnaces installed in homes at elevations above 2,000 feet is not covered by the war-
ranty. Thisprocedure isconsidered a partof the installationprocess and is required to make the furnace operate
properly.
These furnaces are shipped fi'om the factory with a natural gas orifice. If you will be operating this furnace on LP
(liquid propane gas), it will also be necessary to have the furnace converted. The correct LP orifice is supplied
with the furnace to allow operation at elevations below 2,000 feet. If the furnace will be operating on LP gas at
elevations above 2,000 feet, the orifice supplied will be too large to allowproper operation. You should contact
your LP supplier for assistance in getting the derated orifice installed.
We hope you follow these instructions and enjoy many years of trouble free service. If you have any questions,
please feel flee to contact the technical assistance hot line at 1-800-231-4822.
Subject to change without notice. Printed inU.S.A. 035-16329-002 Rev. B (0304)
Copyright © by York International Corp. 2004. All rights reserved. Supersedes: 035-16329-002 Rev, A (401)
Unitary P.O. Wichita
Products Box KS
Group 19014 67204-9014