York 363857-YUM-A-0208 Air Conditioner User Manual
Contents
1. of the condenser coil should be done Clean any debris and dirt from the out side 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 outside BLOWER ASSEMBLY Even with good filters properly in place blower wheels and motors will become dust laden after long months of operation The entire blower assembly should be inspected annually If the motor and or the blower wheel are heavily coated with dust they can be brushed and cleaned with a vacuum cleaner BEFORE CALLING A SERVICE PERSON A Check controller setting and insure it is calling for heat ing or cooling B Check fuses or circuit breakers C Check filters for excessive dust accumulation Johnson Controls Unitary Products 363857 YUM A 0208 TABLE 1 FILTERS FILTER 2 Hi Eff TA 25 TON 4 ea 16 x 25 6 ea 20 x 25 4 ea 16 x 25 6 ea 20 x 25 40 TON 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 25 4 ea 16 x 25 6 ea 20 x 25 OWNER please have your installer fill in the following information immediately after u2. YORK USER S MAINTENANCE and SERVICE INFORMATION MANUAL SINGLE PACKAGE AIR CONDITIONER GAS 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 neigh bor s phone Follow the gas supplier s instruc tions elf 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 pity C US Stara 363857 YUM A 0208 363857 YUM A 0208 SAFETY INFORMATION FOR YOUR SAFETY e Make sure that the furnace area is clear and free of com bustible materials gasoline and other flammable vapors and liquids e Be sure the furnace is free and clear of insulating mate rial Examine the furnace area after installation of the fur nace or the installation of additional insulation Some types of insulation are combustible e For proper opera
3. allowed to accumulate in or around the unit Do not permit overhanging structures or shrubs to obstruct condenser air discharge combustion air inlets or vent air outlets on your unit Adequate air is impor tant to the safe and proper operation of the unit AWARNING Prior to any of the following maintenance proce dures shut off all power to 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 agency This should include inspection of the burners tubes and flue for any corrosion or soot accumula tion which may require cleaning and also checking of burners and controls for proper operation In addition at least once during the heating season the owner shall make a visual inspection of the flue or vent air outlets for evidence of black soot or blockage by leaves or other debris If any soot is found it is recommended a quali fied service agency be called immediately Also clear any blockage found around either the vent air hoods or combus tion air inlets Check for obvious signs of deterioration of the furnace Check that the return and supply ducts attached to the unit are sound and air tight without sagging cracks or gaps Check that the unit s physical support 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
4. ht after several tries a service man should be called to determine the cause of the problem HEAT EXCHANGER TUBE GAS a SUPPLY 4 7 BURNER BURNER BRACKET IGNITOR FIGURE 2 TYPICAL FLAME APPEARANCE BURNER FLAME PIPE BLUE ONLY EXHAUST VENT OUTLET A SHIPPING LABELS REMOVE SHIPPING LABELS PRIOR TO VENT INSTALLATION UUM SS VENT FLUE ASSY X COMBUSTION AIR INLET HEAT SECTIONIDOOR FIGURE 3 FLUE VENT ASSEMBLY This furnace is equipped with a blocked vented shut off sys tem air proving switch The purpose of the switch is to prove that there is combustion air being drawn through the heat section The ignition control will not operate if this switch is not made in the pre purge time of the vent assembly In the event that the furnace fails to operate due to the pressure switch a qualified service agency should be contacted Determine that external vent is in place field installed and clear and free of obstructions FILTER CHANNEL a PERIMETER FRAME FILTERS EXTERNAL k UPRIGHT EXTERNAL NN UPRIGHT f FILTER A BRACKET ys FILTER CHANNEL as RAIL FIGURE 4 FILTER ACCESS Johnson Controls Unitary Products 363857 YUM A 0208 MAINTENANCE GENERAL Snow or debris should not be
5. low the set point of the controller the ventor fans will operate After an adequate purge time the intermittent ignition device will light the burners The burners will extinguish and relight automati cally upon the demand of the controller VENT SAFETY SYSTEM Each gas furnace module is equipped with an automatic reset high temperature limit and rollout switch In the unlikely event of a sustained main burner flame rollout the switch will shut off the flow of gas by closing the main gas valve The ignition module will also be disabled preventing the flow of gas to the valve The rollout switch for each module is located inside the gas heat section access door on the heat shield of each module Flame rollout can be caused by blockage of the power vent system or improper gas pressure adjustment If this 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 person Refer to Figure 3 for a typical installation of vent hoods The ignition modules are designed such that if the furnace fails to ignite after 3 trials for ignition after a call for heat the flow of gas will be shut off and the ignition module will lock out for one hour Then the modules will retry ignition and repeat cycle until ignition occurs or call for heat is satisfied or power to unit is removed If the furnace does not lig
6. ly On initial start up air may be in the gas lines Several tries for ignition may be required before the gas will carry over and the heat sections remains lit The ignition model has 3 trials for ignition If the ignition module locks out it may be neces sary to remove re establish the call for heat W1 or W2 to con tinue the purging process When the controller is satisfied the electrical circuit to the gas valve is opened closing off the flow of gas to the main burner If the burners should fail to light contact your heating con tractor or gas company for service to insure that proper oper ating conditions are restored In the event that gas to the main burner has been shut off DO NOT attempt to place the furnace into operation Call the appropriate service agency Johnson Controls Unitary Products 363857 YUM A 0208 INPUT The correct heat capacity of the furnace is regulated by the main burner orifices and the gas pressure The proper ori fices for natural gas are furnished but the gas pressure regu lator must be adjusted by the installer or gas company service person 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 Open the main gas shutoff valve s Turn on the electric power supply 2 3 4 Initiate a call for heat 5 Ifthe return air temperature is be
7. nit has been installed and is properly operating Installed by Installers Address ____ Installation Date _ Owner s Name ___ Owner s Address Model 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 REPLACEMENT PARTS Contact your local York parts distribution center for authorized replacement parts Johnson Controls Unitary Products 363857 YUM A 0208 Johnson Controls Unitary Products 363857 YUM A 0208 Johnson Controls Unitary Products 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
8. rain could leak Start the furnace The ventor motors should start and after a short delay the main burners should ignite If they do not contact a qualified service person for assistance Check the appearance of each main burner flame The flame should have a blue appearance No yellow flame should be observed A yellow flame indicates a problem with the com bustion system or that cleaning is required LUBRICATION Outdoor fan and ventor motors are permanently lubricated Lubrication is not recommended All other fans and motors should be lubricated per schedule in MAINTENANCE SECTION in the UNIT INSTALLATION INSTRUCTION AIR FILTERS NOTE For hi efficiency rigid or bag filters consult manufac turers manual Filters must always be used They should be inspected once a month and thoroughly cleaned or replaced if it appears they are beginning to accumulate excessive dirt Filter sizes and quantities are shown in the following table To install the filters open the filter access door Slide the dirty filters out and slide the clean filters all the way into the filter racks provided see Fig 4 They must butt each other when sliding into position Close the filter access door NOTE Filters must be installed with Air Flow arrows point ing toward the evaporator coil They must also be re installed in their original position without any gaps between filters CONDENSER COIL An annual check and cleaning if necessary
9. red 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 spark ignition device It has a Relight control designed to automatically light the burn ers each time the thermostat controller calls for heat A CAUTION This furnace is equipped with an intermittent spark and automatic re ignition system Do Not attempt to manually relight the pilot Personal injury could result When the controller calls for heat gas is supplied to the Inte gral Crossover Burners and at the same time sparking occurs to light the main burner gas A flame sensor closes a circuit to the ignitor control which proves that all of the burn ers have ignited proper
10. tion of this furnace air for combustion and ventilation is required Make sure that these open ings are not obstructed e 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 fur nace fails to operate contact a qualified service techni cian e Should the gas supply fail to shut off or if overheating occurs shut off the gas valve to the furnace before shut ting off the electrical supply Then call a qualified service technician e Do not use this furnace if any part has been under water A flood damaged furnace is extremely dangerous Attempts to use the furnace can result in fire or explo sion A qualified service technician should be contacted to inspect the furnace and to replace all gas controls control system parts electrical parts that have been wet or the furnace if deemed necessary e 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 technician before each heating season SYSTEM OPERATION THERMOSTATS Set your thermostat for either heating or cooling then set it for the desi
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