USER`S, MAINTENANCE and SERVICE INFORMATION
Contents
1. For proper operation of this furnace air for com bustion and ventilation is required Make sure that these openings are not obstructed For lighting or shutting down this furnace refer to the lighting instructions provided adjacent to the burners and also located in this manual A blocked vent roll out switch is provided in the burner compartment This switch is a manual reset If the furnace fails to operate contact a qualified service technician Should the gas supply fail to shut off or if overheat ing occurs shut off the gas valve to the furnace before shutting off the electrical supply Then calla qualified service technician Do not use this furnace if any part has been under water A flood damaged furnace is extremely dan gerous Attempts to use the furnace can result in fire or explosion A qualified service technician should be contacted to inspect the furnace and to replace all gas controls control system parts elec trical parts that have been wet or the furnace if deemed necessary Determine the integrity of the installation regarding the flue gas vent the return and supply air duct Confirm the equipment is well supported and there are no signs of deterioration The manufacturer recommends that main burner ignition device and controls are inspected by a qualified service tech nician before each heating season SYSTEM OPERATION THERMOSTATS Set your thermostat for either heating or cooling then set it2. for the desired temperature DO NOT MOVE THE THERMO STAT RAPIDLY ON AND OFF OR BACK AND FORTH FROM HEAT TO COOL THIS COULD DAMAGE YOUR EQUIPMENT Always allow at least 5 minutes between changes Find the temperature that is most comfortable to you and then LEAVE YOUR THERMOSTAT ALONE Exception is for night or vacation set back to conserve energy Manually moving the thermostat up or down will not speed up temperature changes in your rooms This only causes the thermostat switch to function at your command rather than responding to room temperature Heat generated by devices other than the furnace may inter fere with thermostat performance Therefore lamps radios television sets etc should not be placed near the thermostat FIGURE 1 TYPICAL THERMOSTAT INTERMITTENT IGNITION DEVICE Your unit is equipped with a cycling pilot burner It has a Pilot Relight control designed to automatically light the pilot burner each time the thermostat calls for heat A CAUTION This furnace is equipped with an intermittent pilot and automatic re ignition system Do Not attempt to manually relight the pilot Personal injury could result 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 Johnson Controls Uni
3. YORK Heating and Air Conditioning USER S MAINTENANCE and SERVICE INFORMATION MANUAL 3 THRU 6 TON SINGLE PACKAGE AIR CONDITIONER GAS ELECTRIC amp ELECTRIC ELECTRIC The manufacturer recommends that the User read all sections of this manual and keep the manual for future reference AWARNING FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury death or property dam age Do not store or use gasoline or other flamma ble vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Leave the building immediately Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier 66358 YUM C 1011 66358 YUM C 1011 SAFETY INFORMATION FOR YOUR SAFETY Make sure that the furnace area is clear and free of combustible materials gasoline and other flam mable vapors and liquids Be sure the furnace is free and clear of insulating material Examine the furnace area after installa tion of the furnace or the installation of additional insulation Some types of insulation are combusti ble
4. acks provided When more than one filter in a filter rack is required they must butt each other when sliding into position Replace the filter access panel 2 14 X 20 FILTERS 1 14 X 25 FILTERS FIGURE 4 END VIEW LESS FILTER ACCESS PANEL BLOWER ASSEMBLY Even with good filters properly in place blower wheels and motors will become dust laden after many months of opera tion The entire blower assembly should be inspected annu MOTORS Outdoor fan motors are permanently lubricated and require no maintenance Ventor motor is factory lubricated for an estimated 10 year life Indoor Blower Motor and Drive The indoor blower motor fea tures ball bearings that do not require periodic lubrication Periodic lubrication of the motor and bearings can extend the life of components but is optional If desired every three years using a low pressure grease gun pump grease into the bearing grease fitting until grease just begins to show at the seals Do not over lubricate Use any lithium base grease recommended for ball bearing ser vice CONDENSER COIL An annual check and cleaning if necessary of the outdoor coil should be done Cleaning should be as often as neces sary to keep the coil clean Clean any debris and dirt from the outside coil face with a brush being careful not to damage the fins If extremely dirty a hose can be used to wash the coil from the inside out while brushing a soapy solution on the out
5. g the flow of gas to the valves The switch is located inside the gas heat access panel above the burner inlet Flame rollout can be caused by blockage of the power vent system improper gas pressure or adjustment If this event occurs the furnace will not operate properly gas supply to the furnace should be shut off and no attempt should be made to place the furnace in operation The system should be inspected by a qualified service techni cian Refer to Figure 2 for a typical installation 100 SHUT OFF The ignition modules are designed for 100 shut off If the furnace fails to ignite within 85 seconds after a call for heat the flow of gas including pilot will be shut off and the ignition module will lock out The module can be reset by A Turning the system switch on the room thermostat to the OFF position and back to the HEAT position B Decreasing the set point of the room thermostat below the temperature in the conditioned space and returning it to its original setting C Opening and closing the unit s main disconnect switch GAS HEAT ACCESS PANEL FLAME ROLLOUT SWITCH FIELD INSTALLED MAIN GAS SHUT OFF VALVE Mounted Externally FIGURE 2 TYPICAL INSTALLATION VENT OUTLET COMBUSTION AIR INTAKE BURNERS Johnson Controls Unitary Products 66358 YUM C 1011 If the furnace continues to lock out a qualified service techni cian should be called to determine the cause of
6. itable return air location if an economizer or outside air accessory is not used Filters must always be used They should be inspected once a month and thor oughly cleaned or replaced if it appears they are beginning to accumulate excessive dirt Filter sizes and quantities are shown in the following table ally If the motor and wheel are heavily coated with dust they can be brushed and cleaned with a vacuum cleaner These units are supplied with blower shaft bearings that do not require maintenance but may be relubricated if desired Every three years using a low pressure grease gun pump grease into the bearing grease fitting until grease just begins to show at the seals Do not over lubricate Use any lithium base grease recommended for ball bearing service AWARNING Perform all maintenance operations on the blower motor with electric power disconnected from the unit Do not attempt to lubricate bearings with the unit in operation QUANTITY THROWAWAY PER FILTER UNIT SIZES Nom Tons Inches 3 6 TON 14 x 20 2 14x 25 1 To install the filters remove the filter access panel located to the left of the condensate drain connection as shown in Fig ure 5 NOTE Filters must be installed with Air Flow arrows point ing inward toward the indoor coil In the event the spacers in the filter section are removed they must be reinstalled in their original position Slide filters all the way into the filter r
7. niter will start to spark and ignite the pilot flame After a short delay the main burner should ignite If it does not contact a qualified service technician for assistance Check the appearance of the main burner flame Adjust burner shutters so no yellow flame is observed in the heat exchanger tubes See Figure 3 If flame adjustment cannot be made obtain the assistance of a qualified service technician and refer to the PILOT CHECKOUT and BURNER AIR SHUTTER ADJUSTMENT sections in the UNIT INSTALLATION INSTRUCTION HEAT EXCHANGER BURNER FLAME Blue only FIGURE 3 TYPICAL FLAME APPEARANCE BURNER AND PILOT CHECK Periodically at least annually at the beginning of each heat ing season make a visual check of the pilot and main burner flame If necessary adjust main burner primary air shutters to give a distinct sharp blue flame as explained under BURNER AIR SHUTTER ADJUSTMENT If it is not possible to adjust for the proper flame the burners may need cleaning 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 Johnson Controls Unitary Products 66358 YUM C 1011 AIR FILTERS Units up through 125 MBH input 3 6 Ton are shipped with 1 throwaway type air filters The filter racks on 3 6 ton units will receive 1 or 2 filters Filters can also be installed in the building at a su
8. side A CAUTION Damage can occur if the bearings are overlubri cated Use grease sparingly REGISTERS Supply and return air registers must be open when the unit is in operation Obstructions must not be allowed to block air flow in or out of the registers Johnson Controls Unitary Products TROUBLESHOOTING B Check thermostat for lint etc BEFORE CALLING A SERVICE PERSON C Check fuses or circuit breakers A Check thermostat setting and insure thermostat is calling D Check filters for excessive dust accumulation for heat or cooling OWNER please have your installer fill in the following information immediately after unit has been installed and is properly operating Installed by Installer s Address Installation Date Owner s Name Owner s Address Equipment installed at address Model Number Serial Number Distributor from whom the equipment was purchased The owner should keep this information in a place where it can be found if needed for warranty purposes en an PERFORMANCE CERTIFIED m ARI Standard 210 240 Unitary Small AC C US Subject to change without notice Printed in U S A 66358 YUM C 1011 Copyright 2007 by Johnson Controls Inc All rights reserved Supersedes 66358 YUM B 0711 Johnson Controls Unitary Products 5005 York Drive Norman OK 73069
9. tary Products 66358 YUM C 1011 When the room thermostat is satisfied the electrical circuit to the gas valve is opened closing off both main burner and pilot gas simultaneously If the pilot burner should fail to light contact your heating contractor or gas utility for service to insure that proper operating conditions are restored INPUT The correct heat capacity of the furnace is regulated by the burner orifices and the gas pressure The proper orifices are furnished but the gas pressure regulator must be adjusted by the installer or gas utility service technician OPERATING INSTRUCTIONS TO SHUT DOWN THE FURNACE 1 Close the main gas shutoff valve s 2 Turn off the electric power supply TO LIGHT THE FURNACE 1 Do not attempt to light manually 2 Open the main gas shutoff valve s 3 Adjust the set point of the room thermostat above the temperature in the space 4 Turn on the electric power supply 5 The draft fan will operate After an adequate purge time the electric spark igniter will light the burners 6 The burners will extinguish and relight automatically upon the demand of the room thermostat VENT SAFETY SYSTEM This gas furnace is equipped with an automatic reset high temperature sensor or rollout switch which in the unlikely event of a sustained main burner flame rollout will shut off the flow of gas by closing the main gas valve The ignition mod ules will also be disabled preventin
10. the problem AWARNING ELECTRICAL SHOCK FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in dangerous operation serious injury death or property damage Improper servicing could result in dangerous oper ation serious injury death or property damage e Before servicing disconnect all electrical power to furnace When servicing controls label all wires prior to disconnecting Reconnect wires correctly e Verify proper operation after servicing AWARNING Prior to any of the following maintenance proce dures shut off all power to the unit to avoid per sonal injury 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 the unit and how to adjust tem perature settings within the limitations of the system Advise that the flue exhaust hood surface and the immediate area will experience high temperatures during the heating cycle and that all unauthorized personnel and debris must be kept away from this area GENERAL MAINTENANCE In order to insure long and trouble free service from your sys tem we recommend periodic inspection cleaning lubrication and adjustment by your installing Dealer Contractor Be sure to ask about this service For those who prefer to do it your self please follow the instructions listed below to care for your system Sno
11. w or debris should not be allowed to accumulate in or around the unit Do not permit overhanging structures or shrubs to obstruct outdoor air discharge combustion air inlets or vent outlets on your unit These provide air for com bustion and ventilation Adequate air is important to the safe and proper operation of the unit HEATING SYSTEM INSPECTION It is the owner s responsibility to insure that an annual inspec tion of the entire heating portion of the unit is made by a qual ified service technician This should include inspection of the burner heating element and flue for any corrosion or soot accumulation which may require cleaning and also checking of burner and controls for proper operation In addition at least once during the heating season the owner shall make a visual inspection of the flue outlet for evi dence of black soot or blockage of flue outlet by leaves or other debris If any soot is found it is recommended a quali fied service technician be called immediately If any blockage is found it must be cleared immediately Check for obvious signs of deterioration of the unit Check that the return and supply ducts attached to the unit are sound and air tight Check that the unit s physical support concrete slab or roof curb is sound and not in need of repair Make sure there are no gaps between the roof curb and the unit where rain could leak into the building Start the furnace The vent motor should start the ig
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