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York 66441-YUM-D-1011 manual

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Table of contents for the manual

  • Page 1

    USER’S, MAINTENANCE and SERVICE INFORMATION MANUAL 15 THRU 25 TON SINGLE PACKAGE AIR CONDITIONER GAS/ELECTRIC & ELECTRIC/ELECTRIC 66441-YUM-D-1011 CONTENTS SAFETY INFORMATION . . . . . . . . . . . . . . . . 2 FOR YOUR SAFETY . . . . . . . . . . . . . . . . . . . . . . . 2 SYSTEM OPERATION . . . . . . . . . . . . . . . . . . 2 THERMOSTATS . . [...]

  • Page 2

    66441-YUM-D-1011 2 Johnson Controls Unitary Products SAFETY INFORMATION FOR YOUR SAFETY • Make sure that the furnace area is clear and free of com- bustible materials, gasoline and other flammable vapors and liquids. • Be sure the furnace is free and clear of insulating mate- rial. Examine the furnace area after installation of the fur- nace or[...]

  • Page 3

    66441-YUM-D-1011 Johnson Controls Unitary Products 3 When the thermostat calls for heat, pilot gas is supplied and at the same time, sparking occurs to light the pilot gas. With the pilot lit, the flame sensor rod closes a circuit to the ignitor control which then opens the gas valve to admit main burner gas. When the room thermostat is satisfied, [...]

  • Page 4

    66441-YUM-D-1011 4 Johnson Controls Unitary Products If the furnace continues to lock out, a qualified service techni- cian should be called to determine the cause of the problem. EXPLAIN UNIT FUNCTION When the system is functioning properly, show the owner the location of all disconnect switches and the thermostat. Explain how to start and stop th[...]

  • Page 5

    66441-YUM-D-1011 Johnson Controls Unitary Products 5 CLEANING BURNERS Remove them from the furnace as explained in BURNER INSTRUCTIONS section in the Unit Installation Instructions. Clean burners with wire brush and vacuum as needed. CLEANING FLUE PASSAGES AND HEATING ELEMENTS With proper combustion adjustment, the heating element of a gas fired fu[...]

  • Page 6

    66441-YUM-D-1011 6 Johnson Controls Unitary Products ECONOMIZER Even with good filters properly in place, the economizer assembly will become dust laden after many months of use. The entire assembly should be inspected annually. If the assembly is heavily coated with dust, it can be brushed and cleaned with a vacuum. A common aerosol contact cleane[...]

  • Page 7

    Subject to change without notice. Printed in U.S.A. 66441-YUM-D-1011 Copyright © 2011 by Johnson Controls, Inc. All rights reserved. Supersedes: 66441-YUM-C-0711 Johnson Controls Unitary Products 5005 York Drive Norman, OK 73069 CONDENSER COIL An annual check and cleaning, if necessary, of the outdoor coil should be done. Cleaning should be as oft[...]