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Unitary Products Group

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As an owner of a new furnace you need to know the following information:

If your home is located at an elevation above 2,000 feet, the burner orifice in your furnace will need to be derated.

Please contact the nearest authorized Service Center to have this procedure performed properly.

These furnaces are shipped from 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 operatingon LP gas at elevations

above 2,000 feet, the orifice supplied will be too large to allow proper 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 free to contact the technical assistance hot line at 316/832--6450.

Your dealer or gas company may have already applied the proper deration for your unit. If so, they shouldbe 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 orifice for furnaces installed in homes at elevations above 2,000 feet is not covered by the warranty.

This procedure is considered a part of the installation process and is required to make the furnace operate properly.

Subject to change without notice. Printed in U.S.A.

Copyright E by Unitary Products Group 1997. All rights reserved.

035--15875--301 (1198) P.I.

Post Office

Box 19014

Wichita

KS.

67204

Unitary

Products

Group

Summary of Contents for DLAS

Page 1: ...ration service or maintenance can cause property damage per sonal injury or loss of life Installation and service must be performed by a qualified installer service agency or the gas supplier Never at...

Page 2: ...ed to operate on only one of these two different gases A small metal tag secured to the fur nace next to the gas valve will specify the type of gas your furnace is equipped to use If the gas is differ...

Page 3: ...wer to the appliance if service is to be per formed 3 Remove the furnace doors 4 Move gas control switch to OFF position DO NOT FORCE 5 Replace the furnace doors GAS CONTROLCONTROL LEVER FIGURE 1 ROBE...

Page 4: ...satisfied at which time all burner flame is extin guished Duringthe off cycle no gas is consumed Withthe roomthermostat set below roomtemperature andwith the electrical power andgas supply to the furn...

Page 5: ...upply fail to shut off shut off the manual gas valve to the furnace and allow blower to run until furnace cools down and blower shuts off before shutting off the electrical supply The furnace gas valv...

Page 6: ...the tips of the flame will be yellow See Figure 6 5 On Propane gas almost all of the flame will be yellow although some blue should still be present at the base of the flame next to the end of the bu...

Page 7: ...the supply of gas to the burner in case of malfunc tion For this reason it is never practi cal to assume that the furnace will op erate unattended for a long period of time especially if there is a po...

Page 8: ...er 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 free to contact the...

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