User Manual
Contents
1. the unit will automatically cycle on and off to maintain the desired temperature setting The unit will also operate automatically when the selector switch is positioned at Cool The fan selector switch can be used to operate the indoor fan continuously by positioning it at On When set to Auto the fan will only operate when required during the heating or cooling cycles To ensure that the thermostat operates properly it must be level and positioned to avoid the influence of such external heat sources as lamps televisions or other heat producing appliances Cautions Warnings and Notices A WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury caution Indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury It may also be used to alert against unsafe practices Indicates a situation that could result in equipment or property damage only accidents Important Environmental Concerns Scientific research has shown that certain man made chemicals can affect the earth s naturally occurring stratospheric ozone layer when released to the atmosphere In particular several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine Fluorine and Carbon CFCs and those containing Hydrogen Chlorine Fluorine and Carbon HCFCs Not all refrigerants containing these c2. Owner Manual Packaged Rooftop Air Conditioners Precedent Gas Electric 3 10 Tons 60 Hz Model Number YSCO36E YSCO60E YSCO72F YSC120F YHCO48F YHCO60F YHCO36E YHCO72E YHC120E YHCO72F YHC102F Av SAFETY WARNING Only qualified personnel should install and service the equipment The installation starting up and servicing of heating ventilating and air conditioning equipment can be hazardous and requires specific knowledge and training Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment May 2013 2013 Trane RT SVU03H EN All rights reserved Thermostat Room thermostats are delicate temperature sensing controls Their main function is to energize and de energize the heating or cooling circuit to maintain the temperature setting you select Many thermostats contain a room thermometer to indicate the approximate room temperature and a temperature scale at the adjustment indicator to select the desired indoor air temperature In addition most thermostats have a selector mode switch with Heat Off and Cool positions and a fan switch with On and Off positions When the switch is positioned at Off your unit will not operate in either the heat or cool modes If the selector switch is set at Heat
3. d move the selector switch to the ON position The unit will now operate automatically 12 If the unit will not operate follow the instructions To Turn Off Gas To Unit under Heating System Shutdown and call your service technician or gas supplier Important The unit is to be adjusted to obtain an air rise within that specified on the nameplate Heating System Shutdown To shut down the heating system for brief periods of time simply adjust the thermostat selector switch to the Off position Property Damage If the unit is shut down during the cold weather months provisions must be taken to prevent freeze up of all water pipes and water receptacles Whenever your house or building is to be vacant arrange to have someone inspect your structure for proper temperature This is very important in below freezing weather If for any reason your furnace should fail to operate damage such as frozen water pipes could result How To Turn Off Gas To Unit 1 Set the thermostat to lowest setting A WARNING Hazardous Voltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or seriou
4. e each month when the system is in constant operation In new homes check the filters every week for the first 4 weeks See Table 1 for the required filter size s If you have disposable type filters replace them with new filters of the same type and size Do not attempt to clean disposable filters Permanent type filters can be cleaned by washing them with a mild detergent and water Ensure that the filters are thoroughly dry before reinstalling them in the unit or duct system It may be necessary to replace permanent filters annually if washing fails to clean the filter be sure to use the same type and size as was originally General Information Important Remember the following instructions at all times WARNING Hazard of Explosion or Fire Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance IFYOU SMELL GAS follow instructions below Do not try to light any appliance Do not touch any electrical switch Do not use any phone in your building Open windows and doors Alert others and evacuate building immediately From a phone outside of the building immediately call your gas supplier Follow the gas supplier s instructions If you can not reach your gas supplier call the fire department Failure to follow recommendations listed above could result in death or serious injury and equipment or property damage Safety Hazards e Do not use this furnace i
5. etting the thermostat de energizes the heating electrical circuit which in turn extinguishes the burners The indoor fan continues to circulate warm air until most of the heat is removed from the unit s combustion chamber Safety Controls e Your unit is equipped with an automatic reset safety limit control to prevent overheating When this control opens it shuts down the heating electrical circuit until the unit cools down sufficiently Inadequate airflow i e caused by dirty filters or defective fan motor may cause the unitto cycle on and off as the limit trips and automatically resets If you suspect that the unit is cycling on its limit control immediately contact a service person for instructions If flames from the burner are not properly drawn into the heat exchanger a Flame Rollout Protection Control will open causing the furnace to shut off The cause must be investigated by a qualified service person If installed the condensate overflow switch will shut down the unit before a drain pan overflow occurs Heating System Start Up Because your unit has an automatic ignition system it is easy to start the heating cycle at the beginning of the heating season In order for the unit to operate properly and safely the furnace needs air for both combustion and ventilation Check to make sure that all air openings are unobstructed and there is adequate clearance around the unit to provide good air flow WARNING Hazardous V
6. f any portion has been under water as it may have rendered the unit hazardous to operate Immediately call a qualified service technician to inspect the furnace and to replace any part or the control system and any gas control which has been under water e Should overheating occur or the unit gas valve fail to shut off close the gas valve to the furnace before shutting off the electrical supply Failure to follow recommendations could result in death serious injury and equipment or property damage installed Table 1 Recommended standard filters Unit Model Number Filter Size Inches Millimeters YH SCO36E YHCO37E 2 20x30x2 2 508x762x50 YSCO48E 2 20x30x2 2 508x762x50 YSCO60E 2 20x30x2 2 508x762x50 YHC047E YHC048 4 16x25x2 4 406x635x50 YHCO60 YHCO67E 4 16x25x2 4 406x635x50 YSCO72F 4 16x25x2 4 406x635x50 YSCO90F 4 16x25x2 4 406x635x50 YHCO72F 4 20x25x2 4 508x635x50 YSCO92F 4 20x25x2 4 508x635x50 YSC102F 4 20x25x2 4 508x635x50 YSC120F 4 20x25x2 4 508x635x50 YHCO92F 4 20x25x2 4 508x635x50 YHC102F 4 20x25x2 4 508x635x50 YHC120E 2 20x30x2 2 508x762x50 3 20x25x2 3 508x635x50 Awarninc Safety Hazards e Never perform any maintenance procedures until the electrical power to the unit is turned off e Never perform any maintenance procedures until the gas valve is the gas supply line is
7. heck the main burner flames They should be bright blue flames extending into the heat exchanger sections 9 Never store anything flammable or combustible around or near the unit Condensate Overflow Sensor Optional If installed the Condensate overflow switch will shut down the unit before a drain pan overflow occurs The manufacturer optimizes the performance of homes and buildings around the world A business of Ingersoll Rand the leader in creating and sustaining safe comfortable and energy efficient environments the manufacturer offers a broad portfolio of advanced controls and HVAC systems comprehensive building services and parts For more information visit www IRCO com The manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice 2013 Trane All rights reserved RTSVU03H EN 13 May 2013 Supersedes RFSVU03G EN 18 July 2012 We are committed to using environmentally conscious print practices that reduce waste
8. oltage w Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury 1 Set the thermostat s heating adjustment lever at its lowest setting 2 Move the selector switch to the Off position 3 Turn off all electric power to the unit WARNING Risk of Burn NEVER attempt to manually light the burner Failure to follow this recommendation could result in serious injury 4 This unit is equipped with an ignition device which automatically lights the burners 5 Remove the access panel that contains the following label Figure 2 Label REMOVE THIS PANEL TO GAIN ACCESS TO THE GAS VALVE 6 Change the ON OFF switch to the OFF position Note Some valves require the knob to be pushed in slightly before turning 7 Wait 5 minutes to clear out any gas If you then smell gas STOP Refer to the warnings provided in the General Information section If you do not smell gas go to the next step 8 Change the ON OFF switch to the ON position 9 Replace panel removed in step 5 above 10 Turn on all electric power to unit 11 Set thermostat to desired temperature an
9. ompounds have the same potential impact to the environment Trane advocates the responsible handling of all refrigerants including industry replacements for CFCs such as HCFCs and HFCs Important Responsible Refrigerant Practices Trane believes that responsible refrigerant practices are important to the environment our customers and the air conditioning industry All technicians who handle refrigerants must be certified The Federal Clean Air Act Section 608 sets forth the requirements for handling reclaiming recovering and recycling of certain refrigerants and the equipment that is used in these service procedures In addition some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants Know the applicable laws and follow them Air Filters Filters are to be used with this unit Units ship from the factory with filters installed Figure 1 Gas unit overview RETURN AIR SUPPLY AIR i i 1 AAI PRESSURE SWITCH L GASVALVE COMPRESSOR It is very important to keep the central duct system air filters clean Be sure to inspect them at least onc
10. s injury 2 Turn off all electric power to the unit if service is to be performed 3 Remove the access panel that contains the label shown in Figure 2 4 Change ON OFF switch to the OFF position 5 Replace panel removed in step 3 above Heating System Maintenance Complete the following unit inspections and service routines at the beginning of each heating season Refer to the warnings in General Information regarding combustible materials and what to do if you smell gas Important These steps should only be performed by a qualified service technician 1 Inspect the control panel wiring and heating controls to make sure connections are tight and wiring insulation is intact 2 Turn the unit on and off at the thermostat to be sure the ignition control and spark electrode are operating properly 3 Turn off the gas supply with the unit operating to verify that the gas valves closes and that a re ignition cycle is initiated by the ignition control 4 Check the operation of the gas ignition system 5 Check the burner manifold pressure A 1 8 inch pipe plug is provided in the gas valve for this purpose 6 Visually inspect all of the unit s flue product passage ways for excessive deposit build up and corrosion If build up or corrosion is apparent perform the necessary repairs 7 Arrange for a qualified serviceman to inspect the unit every other heating season to maintain safe and efficient operation 8 Visually c
11. turned off e Never remove any panels from the unit while it is operating e Never remove panels or parts from the unit that are not discussed in this manual e Never cover the unit since it is designed to operate year round Failure to follow recommendations could result in death or serious injury Your unit is of complex design To ensure that it performs safely and gives long lasting services some of the maintenance work must be performed by a qualified service person When a service person is referred to in this manual it is describing a service technician who has had special training or a number of years experience in servicing this type of equipment It is your responsibility to select a qualified service company that can provide a service person of this caliber Heating System Heating Cycle Operation Your unit s heating system has a solid state electronic ignition control that lights the furnace burners each time the thermostat calls for heat Atthe end of each heating cycle the furnace burners are extinguished This type of system is called Direct Spark Ignition DSI A normal heating cycle begins when the air temperature drops below the thermostat setting The thermostat then energizes the heating electrical circuit that starts and controls the furnace burners Shortly after the burners ignite the indoor fan starts and circulates warm air through the conditioned space When the air temperature rises to the thermostat s
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