USER’S INFORMATION MANUAL - MyRheem.com

1 user S INFORMATION MANUALFOR YOUR COMBINATIONGAS HEATING/ELECTRIC COOLINGAIR CONDITIONING UNITDO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTUREREFERENCE BY A SERVICEMAN OR user OF THIS APPLIANCE. Do not store or use gasoline or otherflammable vapors and liquids, or othercombustible materials in the vicinity ofthis 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 yourbuilding. Immediately call your gas supplierfrom a neighbor s phone. Follow thegas supplier s instructions. If you cannot reach your gas supplier,call the fire department. Do not return to your home untilauthorized by the gas supplier or firedepartment. DO NOT RELY ON SMELL ALONE TODETECT LEAKS. DUE TO VARIOUSFACTORS, YOU MAY NOT BE ABLETO SMELL FUEL GASES. recognized fuel gas and COdetectors are recommended in allapplications, and their installationshould be in accordance with themanufacturer s recommendationsand/or local laws, rules, regulations,or customs Installation and service must beperformed by a qualified installer,service agency or the gas YOUR SAFETY!

2 IF THE INFORMATION IN THESEINSTRUCTIONS IS NOT FOLLOWEDEXACTLY, A FIRE OR EXPLOSIONMAY RESULT, CAUSING PROPERTYDAMAGE, PERSONAL INJURY ORDEATH.!WARNING92-20802-75-05 SUPERSEDES 92-20802-75-04ST-A1224-01 OUTDOOR FANOUTDOORCOILFLUE GASEXHAUSTCOMBUSTIONAIR INLETOPENINGFIGURE 13-6 TON COMMERCIAL MODEL2 INTRODUCTIONR ecognize this symbol as an indication of Important Safety INFORMATION !!This MANUAL contains the operatinginstructions for your combinationgas/electric year-round airconditioner. There are precautionsthat should be taken to maximizesatisfaction from this air : COMPLETELY READALL INSTRUCTIONS PRIOR TOATTEMPTING TO OPERATE ORMAINTAIN THE unit has been designed to giveyou many years of efficient,dependable comfort. With regularmaintenance, your unit will operatesatisfactorily year after year. Pleaseread this MANUAL to familiarizeyourself with operation, maintenanceand safety follow these safety rules:1. The area around the unit must bekept clear and free of allcombustible materials includinggasoline and other flammablevapors and Do not block the combustion airinlets or the exhaust air outletopenings.

3 See Figure Do not operate the unit withoutall panels and doors securely OVERHEATING OCCUROR THE GAS SUPPLY FAIL TOSHUT OFF, SHUT OFF THEMANUAL GAS VALVE TO THEAPPLIANCE BEFORE SHUTTINGOFF THE ELECTRICAL TO DO SO CAN RESULTIN AN EXPLOSION OR FIRECAUSING PROPERTY DAMAGE,SEVERE PERSONAL INJURY ORDEATH!4. Any additions, changes orconversions required in order forthe unit to satisfactorily meet theapplication needs should bemade by a qualified installer,service agency or the gassupplier, using factory specifiedor approved parts. Read yourWARRANTY. Contact theWARRANTOR for conversioninformation. The unit wasequipped at the factory for useon NATURAL GAS to LP GAS requires aspecial kit supplied by OF THE AIR VENTON AN LP TANK REGULATORCAN CAUSE EXPLOSION OR FIRERESULTING IN SERIOUSPERSONAL INJURY, DEATH ORPROPERTY INSPECT ANDCLEAN THE AIR VENT SCREENTO PREVENT ANYOBSTRUCTION. KEEPPROTECTIVE REGULATORCOVER IN PLACE, AS EXPOSURETO THE ELEMENTS CAN CAUSEICE BUILDUP AND A gas burner needs an adequatesupply of combustion andventilation air for proper and safeoperation.

4 Do not block orobstruct air openings on the not place anything around theunit that could block the flow offresh air to the Do not use this unit if any parthas been under call a qualifiedinstaller, service agency or thegas supplier to inspect the unitand to replace any part of thecontrol system or any gas controlthat has been under NOT ALLOW DEBRIS SUCHAS LEAVES, GRASS, WEEDS,SHRUBS, VINES OR SNOWACCUMULATE IN THE AREASURROUNDING THE UNIT,PARTICULARLY IN THE VICINITYOF THE VENT, AIR INTAKE ANDA/C CONDENSER FINS. DOINGSO CAN RESULT IN INADEQUATEUNIT PERFORMANCE OR CREATEA FIRE HAZARD RESULTING INPROPERTY DAMAGE, PERSONALINJURY OR The combustion air inlet/exhaustoutlet hood and surrounding areaare very hot when operating inheating mode. Do not allowchildren to play on or aroundthe OPERATIONINFORMATIONA dvice to the Customer1. Keep the filter clean. Your systemwill operate more efficiently andprovide better conditioned Arrange your furniture anddrapes so that the supply andreturn air registers and grilles Close doors and windows.

5 Thiswill reduce the cooling load onyour system for a moreeconomical Avoid excessive use of Window shades and awnings willreduce the cooling Do not permit the heat generatedby television, lamps or radios toinfluence the Except for the mounting platform,keep all combustible articles!WARNING!WARNING!WARNING3three feet from the unit andexhaust Unless you plan to removepanels to service the unit, do notdisconnect the main power toyour unit. This is a safetyprecaution for the protection ofthe compressor. Otherwise, usethe thermostat switches to shutthe system For extended periods ofinoperation, set the thermostatsystem switch in the OFF position and fan switch in the AUTO Do not allow the unit to become aplay stand for OPERATIONWe find most air conditioning unitsare installed with a single stageheating and cooling thermostat whichincludes a MANUAL heat/cool systemswitch and a MANUAL auto/on cooling, position the systemswitch to Cool and the fan switch to Auto.

6 If constant fan operation isdesired, place the fan switch in the On heating is desired, position thesystem switch to HEAT and place thefan switch in the Auto the heating season, theoperation of the warm air furnace isautomatic. Your installing dealer hasprovided a wall mounted thermostatwhich is sensitive to the change in thetemperature of the air moving aroundthe thermostat. When the temperatureof the air within the heated spacesurrounding the thermostat decreases,the thermostat switch functions toinitiate the ignition sequence and openthe gas spark ignitor located on the mainburner tray will safely ignite the gas(natural or LP) leaving the main burnerports. After approximately 30 secondsof burner operation, the blower controlwill start the blower. Warm air shouldnow gently circulate from the supplydiffusers throughout the dwelling andreturn to the furnace through return airgrille(s).When the temperature of thecirculating air reaches the temperaturesetting of the thermostat, the gas valvewill reclose, the heat exchanger willcool, and the blower will shut off after90 the cooling mode, the compressorand circulation air motor are energizedupon a call for cooling.

7 When thethermostat is satisfied or turned to the OFF position, the compressor is de-energized, but the circulation air blowercontinues to operate for approximately60 seconds to extract the residualcooling left in the cooling suggest that you experiment withconstant air circulationduring theheating and cooling cycles. To achievethis style of operation, place the fanswitch on the thermostat subbase tothe on position. You may enjoy thecomfort associated with the continuousair movement, constant air filtration,and the near even temperature fromfloor to continuous air circulation, somecondensation on the cooling coil canreevaporate at the end of each cycleand cause a buildup of humidity priorto the next cooling OF ROOMTEMPERATUREIt is most important to select thecomfort temperature you desire foreither heating or cooling by use of thethermostat temperature NOT PLAY WITH THETHERMOSTAT. SET IT AND the temperature selection procedureis new to you, ask your installingcontractor to familiarize you with theoperation of the YOUR SAFETY, READBEFORE OPERATINGIF YOU DO NOT FOLLOW THESEINSTRUCTIONS EXACTLY, A FIRE OREXPLOSION MAY RESULT CAUSINGPROPERTY DAMAGE, PERSONALINJURY OR LOSS OF This appliance is equipped with anignition device which automaticallylights the burners.

8 Do nottry to light theburners by BEFORE OPERATING smell allaround the appliance area for gas. Besure to smell next to the groundbecause some gas is heavier than airand will settle on the TO DO IF YOU SMELL GAS Do not try to light any appliance. Do not touch any electric switch, donot use any phone in your building. Immediately call your gas supplierfrom a neighbor s phone. Follow thegas supplier s instructions. If you cannot reach your gassupplier, call the fire depart- ment. Do not return to your home untilauthorized by the gas supplier forfire Use only your hand to push in orturn the gas control knob. Never usetools. If the knob will not push in orturn by hand, don t try to repair it,call a qualified installer, serviceagency or the gas supplier. Force orattempted repair may result in a fireor Do not use this appliance if any parthas been under water. Immediatelycall a qualified installer, serviceagency or the gas supplier toinspect the appliance and to replaceany part of the control system andany gas control valve, electricalcomponents, motors or burnerswhich have been under OF OPERATIONThis unit is equipped with an integratedcirculating air blower/induced draftblower control board that works inconjunction with a remote sense directspark ignition Each time thermostat contactsclose, the induced draft bloweroperates a prepurge The air proving negative pressureswitch The main gas burner cycle seconds after the pressureswitch closes, the gas valveopens and the ignitor sparks forapproximately 7 seconds or untilthe remote flame is sensed at theremote flame sensor.

9 The induceddraft blower continues to run for thecomplete heating If the flame is not sensed duringthis 7 second trial for ignition, thecontrol will repeat the prepurgecycle and ignition cycle two (2)additional times if After a total of three (3) cycleswithout sensing main burner flame,the system will then go into a 100%lockout After one hour, the ignition controlwill repeat the prepurge andignition cycles for 3 tries and thengo into 100% lockout mode It will continue this sequence ofcycles and lockout each hour untilignition is successful or power During the lockout mode, neitherthe ignitor or the gas valve will beenergized until the system is resetby turning the thermostat to the OFF position or interrupting theelectrical power to the unit for 10seconds or The induced draft blower and mainburner will shut off when thethermostat is The fixed time blower control willstart the circulating air blower onthe heat speed approximatelytwenty to thirty (20 to 30)seconds after the main burnersare The circulating air blower willcontinue to run during the burneroperation and then shut down atapproximately ninety (90)

10 Seconds after the thermostatis satisfied and the burnersare shut The circulating air blower willstart and run on the heat speedif the thermostat fan switch is inthe ON OF NORMALFURNACE OPERATINGSEQUENCE1. Thermostat calls for heat2. Induced draft blower Air proving pressure 30 second prepurge is Gas valve opens and ignitor isenergized for 7 second trial forignition Burners ignite and flame sensorproves all burners have lit(maximum of 3 trials for ignitioneach hour).7. The circulating blower isenergized after 20-30 Thermostat is satisfied The gas valve is de-energizedand closes, shutting down theburner The circulating air blower is de-energized after 90 seconds.!WARNINGGas controlknob shownin OFF controlknob shownin OFF VALVEROBERTSHAW 7200 VALVEONHONEYWELL VALVEWHITE RODGERS VALVEGas controlknob shownin OFF 211. Set the thermostat to If the appliance will not operate,follow the instructions To TurnOff Gas To Appliance and callyour service technician or SPARK IGNITOR ANDIGNITION LEAD FROM THEIGNITION CONTROL ARE HIGHVOLTAGE.