York 363857-YUM-A-0208 user manual

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CONTENTS
SAFETY INFORMATION . . . . . . . . . . . . . . . . .2
USER’S, MAINTENANCE and
FOR YOUR SAFETY . . . . . . . . . . . . . . . . . . . . . . . 2
SYSTEM OPERATION. . . . . . . . . . . . . . . . . . .2
SERVICE INFORMATION
THERMOSTATS . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INTERMITTENT IGNITION DEVICE . . . . . . . . . . . 2
INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
MANUAL
OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . 3
MAINTENANCE . .

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363857-YUM-A-0208 Manually moving the thermostat up or down will not speed up SAFETY INFORMATION temperature changes in your rooms. This only causes the FOR YOUR SAFETY thermostat switch to function at your command rather than responding to room temperature. • Make sure that the furnace area is clear and free of com- bustible materials, gasoline and other flammable vapors Heat generated by devices other than the furnace may inter- and liquids. fere with thermostat performance. Therefore, lamps,

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363857-YUM-A-0208 INPUT The correct heat capacity of the furnace is regulated by the HEAT EXCHANGER TUBE main burner orifices and the gas pressure. The proper ori- fices for natural gas are furnished but the gas pressure regu- GAS lator must be adjusted by the installer or gas company SUPPLY service person. PIPE BURNER BURNER FLAME (BLUE ONLY) BURNER BRACKET OPERATING INSTRUCTIONS IGNITOR TO SHUT DOWN THE FURNACE: FIGURE 2 - TYPICAL FLAME APPEARANCE 1. Close the main gas shutoff valve(s). EXHAUS

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363857-YUM-A-0208 All other fans and motors should be lubricated per schedule MAINTENANCE in MAINTENANCE SECTION in the UNIT INSTALLATION INSTRUCTION. GENERAL Snow or debris should not be allowed to accumulate in or AIR FILTERS around the unit. Do not permit overhanging structures or NOTE: For hi-efficiency rigid or bag filters, consult manufac- shrubs to obstruct condenser air discharge, combustion air turers manual. inlets or vent air outlets on your unit. Adequate air is impor- tant to the sa

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363857-YUM-A-0208 TABLE 1: FILTERS QUANTITY PER UNIT AND SIZE FILTER 25 TON 30 TON 40 TON 2 Hi Eff. TA 4 ea. 16 x 25 / 6 ea. 20 x 25 4 ea. 16 x 25 / 6 ea. 20 x 25 4 ea. 16 x 25 / 6 ea. 20 x 25 2 Pleated, 65% 4 ea. 16 x 25 / 6 ea. 20 x 25 4 ea. 16 x 25 / 6 ea. 20 x 25 4 ea. 16 x 25 / 6 ea. 20 x 25 65% Rigid w/2 TA Prefilters 4 ea. 16 x 25 / 6 ea. 20 x 25 4 ea. 16 x 25 / 6 ea. 20 x 25 4 ea. 16 x 25 / 6 ea. 20 x 25 95% Rigid w/2 TA Prefilters 4 ea. 16 x 25 / 6 ea. 20 x 25 4 ea. 16 x 25 / 6 ea. 20 x

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363857-YUM-A-0208 6 Johnson Controls Unitary Products

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363857-YUM-A-0208 Johnson Controls Unitary Products 7

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Subject to change without notice. Printed in U.S.A. 363857-YUM-A-0208 Copyright © 2008 by Johnson Controls, Inc. All rights reserved. Supersedes: Nothing Johnson Controls Unitary Products 5005 York Drive Norman, OK 73069