USER`S INFORMATION, MAINTENANCE AND SERVICE MANUAL
Contents
1. 257 13 187 93AV 31935 30 ISS 1 NOILd3INOI UNIT Heed 30 53931044 LNOS SUNSLON S31 9 NOLIVIN3ATTW 1 YNOd SEM3LONOPSIO SIT ZASSINENOS S asvos 00 id 20131 NA 3SIN NJI 3813 L100 INSW3OWIA34 30 SLNVSOGNOD 2101 p svg 31 YYd 33 TLLNSA NOILINSLG 371081N09 30 3 LLaNOWId YI up SIVI3Y SIA SALOVINOD UI NOLLINSI NO SLOVINOD avas CT 38AINY 3 OT YN0d SILLIYYN S30 LNIWITNIS e Ee S Wuvdd 13 YSLINVHO 30 20 S391430 ONY 9NISIM DL 9 501 4 122 SNIOM NY O 7 08 3SIVNSNOJ SUN 13 3NISN 1 30 39414 S391430 ONY ONISIM ANOLOVS SSUNLVYSANSL S30 Y W3ISIS38 _INVANOd XNVIHALVN NN OSA SULT MSLLNVHO 30 INSNZQUODOVE O NOLLOSNNOD om O _L10Q E LNOL NA NO ARIVEN EIAREAER OVAS MEET 708 303 Id 30 LVISONYSHL MO LNSNIGHOIIVY A2 Y LV1SONSZ3HL WOCH NOILIZNNOD AZ Y mell 03 NAIVNO 2a 3009 El d 31 ANIOI IN3M3NNOILONOY 30 BN3LIOVAVI e YOLIOVAVI NOY OLAI e 70 13 N30 WNOILWN 0373 3009 Y NOTS B3LINVHO N3 ZE 1MOL I YAO HNBNYOASNVYL LI VAOY H3NHOASNVYL LI BI4ILNA OI LNSWSNNOILONOS 30 BNSLIOVAVI 341 HOLIOWdVI NNY 20 S3LON NOISS3ud 30 YNSLVINANOD dT HOLIAS SYNSS3Yd du 31837143008 30 Y3ILIO8 UNS NOISS Wd EE ET a Si 137N1 83m 078 NO e iiey 7 s1 EE E Nets E 3ONVHO 30V 48NS 30 MOL DEL O Ss z2. CONTROL BOX DETAIL Johnson Controls Unitary Products 9 129099 BUM J 0112 DGAA ITEM DESCRIPTION DGAA056BDTB DGAA070BDTB DGAA077BDTB DGAA090BDTB 1 Switch Pressure S1 32435972000 S1 32435972000 S1 32435972000 S1 32435972000 2 Tubing Silicone 2 Req d S1 02812499000 S1 02812499000 S1 02812499000 S1 02812499000 3 Limit Switch Manual Upper S1 02535358000 S1 02535358000 S1 02535358000 S1 02535358000 4 Assembly Booster w Motor S1 37319801821 S1 37319801821 S1 37319801821 S1 37319801821 5 Control Board Integrated S1 03101932002 S1 03101932002 S1 03101932002 S1 03101932002 6 Valve Gas S1 02543267000 S1 02543267000 S1 02543267000 S1 02543267000 T Bracket Mounting Gas Valve S1 07319801064 S1 07319801064 S1 07319801064 S1 07319801064 8 9 Exchanger Heat w Gaskets S1 37319804651 1 37323792001 1 37323792002 1 37323792003 10 Sensor Flame 1 02535354000 S1 02535354000 S1 02535354000 S1 02535354000 11 Switch System S1 7681 3301 S1 7681 3301 S1 7681 3301 S1 7681 3301 12 Transformer 115 24V 40 VA S1 2940A3541 S1 2940A3541 S1 2940A3541 S1 2940A3541 13 Switch Limit S1 02535380000 S1 02535380000 S1 02535381000 S1 02535381000 14 Burner Assembly Auto Ignition S1 37319801403 S1 37319801403 S1 37319801403 S1 37319801403 Includes items 10 amp 15 15 Ignitor Ho
3. Consult the Authorized Service Center list packed with the furnace installed in the manufactured home or contact your installing or servicing dealer Or CON Or look in the Yellow Pages of the telephone book under Mobile Homes or Manufactured Housing Repair and Service for the name and telephone number of the nearest authorized manufactured housing service center If local authorized service cannot be obtained or you are unable to contact your installing dealer contact the authorized distributor in your area If there is no distributor in your area and you cannot obtain proper service under the terms of the warranty please write Unitary Products Group UPG Customer Relations Department PO Box 19014 Wichita KS 67204 9014 Subject to change without notice Published in U S A 129099 BUM J 0112 Copyright 2012 by Johnson Controls Inc All rights reserved Supersedes 129099 BUM I 0711 Johnson Controls Unitary Products P O Box 19014 Wichita KS 67204 9014
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5. USER S INFORMATION MAINTENANCE AND SERVICE MANUAL HIGH EFFICIENCY SEALED COMBUSTION GAS FURNACE MODELS DGAA and DGAH Single Stage Downflow Only AROS CERTIFIED www ahridirectory org 62 o N ISO 9001 Certified Quality Management System For Installation In 1 Manufactured Mobile Homes 2 Recreational Vehicles amp Park Models 3 Modular Homes amp Buildings TABLE OF CONTENTS CONTACT INFORMATION FOR USA 1 To Turn Off the Appliance 0 0 0 c cece eee 4 CONTACT INFORMATION FOR CANADA ooccoocc 1 FURNACE USER MAINTENANCE 5 SAFETY see NR a e a a ee denne ee ed 1 AIF FINOS irc id A ta da 5 While you are away n n u snanar ninan rnnr 2 Removing Filters 5 SEASONAL SERVICE INFORMATION 2 Blower Care 06 6 eee eee eee eee eae 5 Your Service Technician 2 Motor Lubrication 2 62 cece eee eee 5 DESCRIPTION eer aie cages ain seid ana e a 2 SERVICE AND MAINTENANCE MANUAL 6 WARRANTY AND RESPONSIBILITIES 2 SAFETY SECTION ooo iii cee EE eee EN teeth Neige d 6 GAS SUPPLY EE 3 FURNACE MAINTENANCE SECTION 6 Natural Gas Operation 3 FURNACE CLEANING SECTION 6 Propane Gas Operation 3 Burner Removal Cleaning 6 INSTRUCTIONS FOR EXAMINING THE Cleaning the Heat Exchanger 6 FURNACE INSTALLATION 00 00 cece eee eee eens 3 THE FURNACE CONTROLS AND THEIR FUNCTION 6 Observing Burner Operation 3 SEQUENCE OF OP
6. check the filters every week for the first four weeks and every three weeks after that espe cially if the indoor fan is running continuously When replacing the fil ter s you must use filters that are the same size and type as those in the furnace 2 16 x 20 x1 Removing Filters Internally Mounted Air Filters The air filter is in a rack that is attached to the door of the furnace To remove the filter you must do the following 1 Before proceeding be sure the area is well ventilated Follow instruction To turn off the appliance Check all metal parts and surfaces to be sure they have cooled to room temperature before you begin 2 Remove the filter door 3 Remove the air filter by sliding it down the track The air filter will slide out of the rack 4 Replace throw away filter s with the same size new filter s Throw away filter s may be replaced with cleanable filter s at this time Cleanable filter s may be cleaned as described in the manufacturer instructions or as described in these instructions To replace the filter after cleaning you must do the following 1 Slide filter into place If the filter has been cleaned make sure it is dry before re installing it 2 Replace the door or cover panel 3 Make sure the door snaps into the retaining clips 4 Follow the Operating Instructions to place the furnace back in operation Blower Care Even with good filters properly in place blower wheels and motor
7. Do not try to light any appliance Do not touch any electrical switch do not use any phone including cell phone in your building e Leave the building immediately Immediately call your gas supplier from a neighbor s phone Fol low the gas supplier s instructions lf 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 Johnson Controls Unitary Products CONTACT INFORMATION FOR CANADA e Go to website at www york com click on contact then click on contact form and follow the instructions e Contact us by mail York International Consumer Relations 5005 York Drive Norman OK 73069 SECTION l SAFETY 1 The furnace area must be kept clear and free of combustible mate rials gasoline and other flammable vapors and liquids 2 Insulating materials may be combustible The furnace must be kept free and clear of insulating materials The furnace area must be examined when installed in an insulated space or when insula tion is added to be sure that the insulation material has been kept away from the furnace 3 Follow the instructions exactly as shown on the OPERATING INSTRUCTION LABEL or the Start up and Shutdown Instructions on Page 4 of this manual when lighting the furnace or turning the furnace off 4 Should the gas supply fail to shut off or if overheating occurs shut off t
8. Force or attempted repair may result in a fire or explosion 4 Do not use this appliance if any part has been under water Imme diately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water START UP AND SHUTDOWN INSTRUCTIONS Operating Instructions STOP Read the safety information above Set the thermostat to the lowest setting Turn off all electric power to the appliance Remove furnace door Move gas control switch to the OFF position Do not force See Figure 4 6 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow Step 2 refer to Safety Information on Page 4 If you don t smell gas go to next step 7 Move gas control switch to the ON position Do not force See Figure 4 8 Replace burner door 9 Turn on all electric power to the appliance 10 Set thermostat to the desired setting Burner will light which may take 30 60 seconds 11 After three 3 trials for ignition if the appliance will not operate fol low the instructions TO TURN OFF THE APPLIANCE and call your service technician or gas supplier To Turn Off the Appliance 1 Set the thermostat to lowest setting 2 Turn off all electric power to the appliance if service is to be per formed 3 Remove burner access panel 4 Move gas control switch to the OFF position See Figure 4 5 Replac
9. cool fan terminal and runs on the selected speed The fan off setting is fixed at 60 seconds for SEER enhancement Heating Cycle When the system switch is set on HEAT and the fan is set on AUTO and the room thermostat calls for heat a circuit is completed between terminals R and W of the thermostat When the proper amount of com bustion air is being provided a pressure switch activates the ignition control The ignition control provides a 30 second warm up period The gas valve then opens for 10 seconds If the flame is not detected within 2 seconds of the gas valve opening the gas valve is shut off and a retry operation begins If the flame is lost for 2 seconds during the 10 second stabilization period the gas valve is shut off and a retry operation begins During a retry operation the ventor starts a 15 second inter purge and the ignitor warm up time is extended to 27 seconds If the flame is established for more than 10 seconds after ignition during a retry the control will clear the ignition attempt retry counter If three retries occur during a call for heat the furnace will shut down for one hour If at the end of the one hour shut down there is a call for heat the furnace will initiate a normal start cycle If the problem has not been cor rected the furnace will again lockout after three retries A momentary loss of gas supply flame blowout or a faulty flame probe circuit will result in a disruption in the flame and be se
10. damage e Before servicing disconnect all electrical power to the fur nace e When servicing controls label all wires prior to disconnecting Reconnect wires correctly e Verify proper operation after servicing FURNACE MAINTENANCE SECTION The furnace should be cleaned and adjusted by a certified dealer or qualified service contractor once a year or before the start of every heating season The following items must be cleaned and serviced or replaced if there are signs of deterioration 1 The roof cap if applicable 2 The furnace vent pipe Should it be necessary to service the vent air intake system the manufacturer recommends this service be conducted by a qualified service agency The operation of this appliance requires the reassembly and resealing of the vent air intake system 3 The furnace burner ignitor and flame sensor FURNACE CLEANING SECTION NOTE The cleaning operations listed below must be performed only by a qualified service agency Burner Removal Cleaning The main burner should be checked periodically for dirt accumulation If cleaning is required follow this procedure 1 Turn off the electrical power to the unit 2 Turn off the gas supply at the external manual shut off valve and loosen the ground union joint 3 Remove the upper access panel 4 Disconnect wires from flame sensor rollout switch and HSI igniter Remove igniter carefully as it is easily broken 5 Remove the sc
11. from defects in mate rial or workmanship for the stated time in the warranty agreement see warranty certificate packed with the furnace However the manufacturer will not be responsible for any repair costs to correct problems due to improper set up improper installation fur nace adjustments improper operating procedure by the user etc It is also the sole responsibility of the home owner to make sure that the home if located above 2 000 ft altitude be derated Some specific examples of service calls which cannot be included in warranty payments are Converting the furnace to use another type of fuel Correcting faulty duct work in the home Correcting wiring problems in the electrical circuit to the furnace Resetting circuit breakers or other switches Adjusting the burner air shutter or service calls made to correct problems caused by improper air adjustment 6 Correcting problems caused by improper gas supply pressure to the furnace 7 Instructional training on how to light and operate furnace 8 Furnace problems caused by installation of air conditioner heat pump or other air quality device 9 Problems caused by improper installation of the furnace flue assembly roof jack 10 Adding a roof jack extension because of unusual wind conditions or snow conditions 11 Adjusting thermostats 12 Problems caused by construction debris which has fallen into the flue or combustion air openings 13 Replac
12. furnace Restore electrical power check gas supply pip ing for leaks and then verify furnace operation ACAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation Verify proper operation after servicing THE FURNACE CONTROLS AND THEIR FUNCTION 1 Limit Control This furnace is protected by two 2 high tempera ture limit switches The lower limit switch is an automatic reset type 2 Upper Limit Control The upper limit switch near left side of blower is a manual reset type limit switch If burner does not func tion turn system switch to OFF and push reset button in center of limit switch 3 Gas Valve The gas valve is 100 shut off type and will fail safe if for some reason the gas is turned off It is also of the snap opening type which opens to fire position Johnson Controls Unitary Products SEQUENCE OF OPERATION Continuous Blower On cooling heating thermostats with fan switch when the fan switch is set in the ON position a circuit is completed between terminals R and G of the thermostat The blower motor is energized through the cool fan terminal on the ignition control module Intermittent Blower Cooling On cooling heating thermostats with fan switch when the fan switch is set in the auto position and the thermostat calls for cooling a circuit is completed between the R Y and G terminals The motor is energized through the
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14. 1932002 S1 03101932002 6 Valve Gas S1 02543267000 S1 02543267000 7 Bracket Mounting Gas Valve S1 07319801064 S1 07319801064 8 9 Exchanger Heat w Gaskets S1 37319804651 S1 37323792002 10 Sensor Flame S1 02535354000 S1 02535354000 11 Switch System S1 7681 3301 S1 7681 3301 12 Transformer 115 24V 40 VA S1 2940A3541 S1 2940A3541 13 Switch Limit S1 02535380000 S1 02535381000 14 Burner Assembly Auto Ignition S1 37319801403 S1 37319801403 Includes itemss 10 15 15 Ignitor Hot Surface S1 02541021000 S1 02541021000 16 Filter 2 Req d 16x20x1 S1 1214 2511 S1 1214 2511 17 Panel Door Upper Accessory See Page 4 18 Panel Door Lower Short 7900 7671 7900 7671 19 Motor S1 02431948000 S1 02431948000 20 Assembly Motor Mount 21 Plug Connector S1 02521192000 S1 02521192000 22 Capacitor Run 23 Wheel Blower S1 02619654003 S1 02619654003 24 Top Casing S1 07319801342 S1 07319801342 25 Diagram Wiring 157953 157953 26 Strike Door 1 02118364000 S1 02118364000 27 Latch Door S1 02118365000 S1 02118365000 28 Housing Blower 1 37323864001 1 37323864001 29 Gasket Combustion Air Box S1 01006900005 S1 01006900005 30 Gasket Burner S1 01006742000 S1 01006742000 31 Gasket Booster Assembly S1 01006900015 S1 01006900015 32 Gasket Heat Exchanger S1 01006900001 S1 01006900001 NOTE Not Shown New replacement parts shown in bold face type at the first printing of parts list dated 1 12 Major
15. 4 Examine the return air filter rack connections to make sure they are physically sound sealed to the furnace door 5 Examine the furnace casing making sure the physical support is sound without sagging cracks or gaps Examine the furnace base making sure it is physically sound without cracks gaps or sagging and has a good seal 6 Examine the furnace casing for obvious signs of deterioration 7 Examine the burner flames to make sure the burner look like they are operating properly The burner flames for natural gas should appear blue with a few yellow tips The burner flames for propane gas should appear blue with moderate yellow tips The flame should appear cylindrical in shape and should extend from the end of the burner into the heat exchanger PROPANE GAS NATURAL GAS LIGHT BLUE WHITISH YELLOW WITH YELLOW TIPS TO LIGHT YELLOW DARK BLUE LIGHT BLUE BLUE TIPS JUST BLUE TIPS JUST STARTING TO STARTING TO BECOME BECOME PRONOUNCED PRONOUNCED FIGURE 2 Burner Flame Appearance Johnson Controls Unitary Products If any abnormalities are observed when checking for correct operation such as burner failing to ignite or to turn off sooty flame etc call your nearest authorized service technician as shown in the Service Center List included in the home owner envelope with the furnace If Furnace Fails to Operate Properly 1 Check setting of thermostat and position of HEAT COOL switch if air conditioning is ins
16. 6742000 S1 01006742000 S1 01006742000 S1 01006742000 31 Gasket Booster Assembly S1 01006900015 S1 01006900015 S1 01006900015 S1 01006900015 32 Gasket Heat Exchanger S1 01006900001 S1 01006900001 S1 01006900001 S1 01006900001 NOTE Not Shown New replacement parts shown in bold face type at the first printing of parts list dated 1 12 Major components and suggested stocking items are shown with shaded item number lt Across from row indicates a change in that row Not applicable to specified model 2 For Serial Numbers lower then 001207164 Replacement DGAA motors also require Motor Mount Assembly 373 19806 100 if replaced motor has integral flex arm motor mount 3 DGAA with 5 Ton Blowers are provided as an accessory item and are not standard equipment from the factory See Page 4 4 The old motor must use the old run capcitor The new motor can use either capacitor Serial No WOF6528688 and above were built with the new motor 10 Johnson Controls Unitary Products 129099 BUM J 0112 DGAH ITEM DESCRIPTION DGAHO56BBSB DGAH077BBSB 1 Switch Pressure S1 32435972000 S1 32435972000 2 Tubing Silicone 2 Req d S1 02812499000 S1 02812499000 3 Limit Switch Manual Upper S1 02535358000 S1 02535358000 4 Assembly Booster w Motor S1 37319801821 S1 37319801821 5 Control Board Integrated S1 0310
17. ERATION 7 If Furnace Fails to Operate Properly 3 Continuous Blower 00 0 c eee eee eee eee 7 HOW YOUR GAS FURNACE WORKS o oocccccco oo 4 Heating Cycle aio ao gaa EE ENEE eee aus deed ie 7 IF FURNACE FAILS TO OPERATE PROPERLY 4 Hot Surface Ignition System 20 0 c eee eee 7 When You Call For Service Assistance 4 TROUBLESHOOTING 7 To Contact Your SBenviceman 0000 c eee eee eee 4 FURNACE CONTROL DIAGNOSTICS 00 cece o 8 SAFETY INFORMATION eee cece eee eens 4 REPLACEMENT PARTS LIST 000 cece eee eee eee 9 Read the Instructions Below Before Trying WIRING DIAGRAM 12 to Start the Furnace ow ron eee 4 LIMITED WARRANTY 00ccccceeeeeeeeeeeeeeees 14 START UP AND SHUTDOWN INSTRUCTIONS 4 Operating Instructions 0 0 0 0 eee 4 CONTACT INFORMATION FOR USA e Contact us by mail DISTRIBUTED BY MANUFACTURED BY StyleCrest York International 801 W 37th Street 5005 York Drive Building 7 Norman OK 73069 Wichita Ks 67219 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 damage Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS
18. ND FITNESS FOR A PARTICULAR PURPOSE SOME STATES DO NOT ALLOW THE DISCLAIMER OF IMPLIED WARRANTY SO THAT THE ABOVE DISCLAIMER MAY NOT APPLY TO YOU SOME STATES ALLOW ONLY A PARTIAL LIMITATION ON IMPLIED WARRANTIES OR LIMIT THE DURATION OF IMPLIED WARRANTIES TO THE DURATION OF THE EXPRESS WARRANTY IN SUCH STATES THE DURATION OF IMPLIED WARRANTIES IS HEREBY EXPRESSLY LIMITED TO THE DURATION OF THE EXPRESS WARRANTY ON THE FACE HEREOF IN NO EVENT WHETHER AS A RESULT OF BREACH OF WARRANTY OR CON TRACT TORT INCLUDING NEGLIGENCE STRICT LIABILITY OR OTHERWISE SHALL UPG BE LIABLE FOR SPECIAL INCIDENTAL OR CONSE QUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO LOSS OF USE OF THE EQUIPMENT OR ASSOCIATED EQUIPMENT LOST REVENUES OR PROFITS COST OF SUBSTITUTE EQUIPMENT THIS WARRANTY DOES NOT COVER CONSEQUENTIAL DAMAGES THE ABOVE LIMITATIONS SHALL INURE TO THE BENEFIT OF UPG SUPPLIERS AND SUBCONTRACTORS THE ABOVE LIMITATION ON CONSEQUENTIAL DAMAGES SHALL NOT APPLY TO INJURIES TO PERSONS IN THE CASE OF CONSUMER GOODS SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES OR FOR STRICT LIABILITY IN TORT SO THAT THE ABOVE EXCLUSIONS AND LIMITATIONS MAY NOT APPLY TO YOU UPG DOES NOT ASSUME OR AUTHORIZE ANY PERSON TO ASSUME FOR UPG ANY LIABILITY FOR THE SALE OF THIS PRODUCT THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE TO OBTAIN WARRANTY SERVICE
19. ONISTA 07314 S39IA30 ONY ONINIM AYOLOWy NOLLINSL G 30HINO9 30 3 LI3NOWId VI XNS Si S30 SALOVINOO S M38VdAdVY 13 B3TINVHO 30 39Y 13 SUI3YVAdVY 13 3NISN 1 30 39713 po L J NOILd39NO3 UNIT NOLIVIN3MITV 1 20031 Na ISIN N318 3413 1100 3YAINO 3 SIYNIVE3AAS1 S30 Y X3LSISJY 1100 TI LINOL N3 NO JIHLYd N 257 13 1S7 93AV 31935 30 ISS Hd 30 S39 3108d INOS SYNSLOW S37 YNOd SYNALINOPSIG S31 ZASSINYNOS IN3 W30WIdA 38 30 SLNVSOdNOD SLNOL O 2 YN0d SILLIYVA S30 LNINIINIS 9 S01 40122 SNIOW NY ANVANOd XNVIBILVA NN 93AV 38137 3 SOVIANSY 3813 1100 SVU 37 IS Z vd d gr YSILNVHO 30 Lutgen O NOLLO3NNOD OAA O 303 Id 30 LVISONYSHL MO INAWSGNOIIWY At Y LVISONY3HL WOCH NOLLISNNOD AS Y Se e E e SE 3 31 AILN3OI LN3WANNOILONO4 30 ENZLIOVAVO YOLIOVAVI MH OLAI e 7M0 13 N30 TWNOLLYN 0473 3009 f e NOTaS Y3LINVHO N3 39VTI4 LAOL VAO BNINWOISNVSL LI VAO HD AED LI BIAILN3 OI IN3M3NNOLLONOW 30 BNILIDVIVI dul YOLIOVIVI NNY OUI SALON NOISS3ud 30 YNALVLNWNOD d HOLIMS 38NSS3ud dT 3143743005 30 YBILIOG UNS NOISS 204 30 SYIVITIXNY YNALYLNAWOD 2
20. S7 L37NI 83M 078 NO HOLIAS LIMIT AMVITIXNY 2 1ST ESTAN EA ig NE SE ISS E Sid 6 Y 31OV1d303Y 13 ISl d Tor 134005 91 Nid 6 S rd los lod EE CHE 30NVHO 30W48NS 30 NOLLINOI O Sid Z Y 310VId3038U 13 EI S YOLINOI 30V48 NS 10H LV 13NDOS Y Or Nid Z 25 24 SIMddNS YINOd TIV YO4 SLO3NNOISIO JOIAOUd S N OLLINOLO 371081NO9 30 3L13NOYId YI Y NS Sid 9 Y 310V143038 Del 25 Zd VOS IOHINOI 3 Den NO 13x90S Y OMA Nid 9 25 24 o ica aaa io NO ILINOLO 31081NO9 30 3LL3NOWId YI UN S Sid 6 Y TDL Y ASIA Ich GY Od TOYLNOD 39 YNYNJ NO 13X005 OTM Nid E 1S Id S BONVHO 3OVIBNS 30 NOLLINOI NOI WLINOI 3OVIUNS LOH NOI KW eral BEER EENS 9 501 del 22 1531 LV 40 ONTLVY SUNLVYaGNSL SE SE V ONIAVH IVIS3LVA ONIGIM H LIM d3dVId38 38 ISAW D 039V WH NOLONOPSIO 30 YNALYLNWNOD SA HOLIAS LOANNOISIO SA 38 Lamm SOWNUNS JHL HLIM OI od AS SY 38IM TVNISINO IHL 40 ANY AS 3009 ALIO Y 0 og 9 30N3937 ON39371 40 0NY 939 3009 9313 N ice 8 J HO ONV 93N 3009 0373 1 YNOILYN V B3d ONIMIM OTAI IR SALON ILL 30 BOYVHOUNS 30 no oo E Lg ANVHI VATTO LVLSONYSHL 103N_YOASIN SE xe 4315008 ALVISONYSHL 1009 LV3H HOLIMS 3719901 w Y ASII 20 aN917 alen INIT OVASI me RSC Di Sek ee BEN Te Zei xy La MLV LNWNNOD Jm me ME jesd y oe oe 140 ele U E aanvH2 EA Gueal KW fal WIT And ER 5 20 NOLLIN9I Ay F O IF IHA Y3LIN9I ep 19 I Leg vg D vg up 30W48NS LOH bed gt y HA AYRE EN TR A 3NIVA Sg o ke ony me THA asivnunod THA bag geg 4 935 Ap2
21. arrants this product to be free from defects in factory workmanship and material under normal use and service and will replace parts that prove to have such defects according to the terms outlined below FURNACE MODELS Furnace Model Heat Exchanger Parts Coverage Labor and Trip Coverage DGAA DGAH 10 years 2 years 1 years The warranty period for any replacement heat exchanger or part provided here under shall not extend beyond the warranty period stated above The heat exchanger warranty is on a parts only basis no labor freight or other service charges are allowed The warranty period will begin on the purchase date of the residence when the product is installed as original equipment or the installation date when installed in a residence previously purchased by the consumer Return the Warranty Registration Card to UPG promptly after product installation or purchase for your benefit and protection The warranty period will begin upon product shipment from UPG in the absence of a recorded Warranty Registration Card This warranty applies to the original consumer purchaser and any subsequent purchaser The warranty does not apply if the furnace is removed from the orig inal residence or if the residence has been moved from the original location where the furnace was placed in service This warranty applies only to products installed 1 in the United States of America or Canada 2 in accordance with UPG recommendations and
22. components and suggested stocking items are shown with shaded item number lt Across from row indicates a change in that row Not applicable to specified model 3 DGAH with 5 Ton Blowers are provided as an accessory item and are not standard equipment from the factory See page 4 BURNER ORIFICE CHART Normal Altitude Only See Note 5 MODEL 056 070 077 090 NATURAL GAS S1 9951 1361 S1 9951 1541 S1 9951 1611 S1 9951 1771 LP GAS 1 9951 0821 S1 9951 0931 S1 9951 0981 S1 9951 1061 NOTES ACCESSORY PARTS LIST ACCESSORY DESCRIPTION DGAA DGAH Door Panel Upper 7900 7631 7900 7631 5 Ton Blower Ass y Motor S1 02431975000 S1 02431975000 7900 7751 Run Capacitor 20 MFD S1 02420051000 S1 02420051000 Motor Mount S1 37319802930 S1 37319802930 Blower Wheel S1 1472 2761 5 Contact Customer Service for installations at altitudes over 2000 feet above sea level lt Across from row indicates a change in that row Not Applicable to specified model Johnson Controls Unitary Products S1 1472 2761 11 129099 BUM J 0112 WIRING DIAGRAM SECTION IV SOZ0 V GMN Z88SSI
23. dded years of comfort DESCRIPTION This furnace shall be installed in the downflow position Figure 1 shows a typical model in the downflow position The furnace is equipped with an induced draft vent blower and atmospheric burner Combustion air is drawn through the roof jack and pushed into the burner box Flue gas is forced from the heat exchanger by the vent blower and discharged through the flue pipe to the outside atmosphere This is a forced air furnace The furnace circulating air blower draws cool air from the house passes it over the hot furnace heat exchanger and circulates the warmed air through the ductwork to the house The furnace is equipped with the controls necessary for proper opera tion The various components referred to in this manual and on the fur nace rating plate are identified in Figure 1 VENT PIPE BLOWER MOTOR dee CAPACITOR i BLOWER BLOWER MOTOR COMBUSTION PRESSURE AIR PIPE SWITCH SAFETY SHUTOFF CONTROL SWITCH BOARD l BOOSTER DRAFT SILICONE ASSEMBLY TUBE GAS VALVE E GAS BURNER ASSEMBLY TS AIR CONDITIONING COIL PANELS FIGURE 1 Component Locations WARRANTY AND RESPONSIBILITIES It is the sole responsibility of the home owner to make certain that the gas furnace has been correctly set up and converted to the proper fuel Propane or Natural gas and adjusted to operate properly The manufacturer warrants the furnace to be free
24. e burner access panel AWARNING Should overheating occur or the gas valve fail to shut off turn the external manual gas valve in the gas supply line to the furnace to the off position and let the furnace cool off before shutting off the electri cal power supply Refer to Figure 5 St NS Johnson Controls Unitary Products PRESSURE TAP ADJUSTMENT OUTLET MANIFOLD iz MAIN REGULATOR d I A 90 FLANGE INLET lt q ec d J SUPPLY e PRESSURE TAP ELECTRICAL ON OFF SWITCH CONNECTIONS shown in OFF position OUTLET FIGURE 4 Gas Valve m m 6 D Es GAS J PIPE GAS PIPE a 4 MANUAL i SHUT OFF VA VANDAG GAS GAS DRIP ENE BURNER SHUT OFF VALVE LEG VALVE DRIP LEG SNE FIGURE 5 Gas Piping FURNACE USER MAINTENANCE AWARNING Before proceeding be sure the area is well ventilated Turn the ther mostat OFF If the blower is running wait until it stops automatically Turn OFF the gas and electrical power supplies to the furnace Check all metal parts and surfaces to be sure they have cooled to room tem perature before you begin Every time the filters are changed the following items should be visually inspected e Check roof jack assembly for blockage or leakage e Check all c
25. ement of fuses 14 Problems caused by plugged or restricted orifices by any means You should establish a firm understanding of these responsibilities with your manufactured housing dealer service company or gas supplier so there will be no misunderstanding at a later time D boah Johnson Controls Unitary Products GAS SUPPLY The gas supply to your home will either be Natural Gas or Propane gas Your furnace will be factory equipped to operate on only one of these two different gases A small metal tag secured to the furnace next to the gas valve will spec ify the type of gas your furnace is equipped to use If the gas is different from that specified on the metal tag the furnace can be converted by following the instructions on the furnace safety label inside lower front panel Parts for conversion are contained in the small bag attached to the gas valve Be sure the proper size orifice is used as specified on the furnace name plate ACAUTION The furnace must be converted by a qualified technician Improper conversion can cause unsafe operation explosion and or fire or asphyxiation 129099 BUM J 0112 Observing Burner Operation 1 Observe burner to make sure it ignites Observe color of flame On natural gas the flame will burn blue with appreciably yellow tips On Propane gas a yellow flame may be expected If flame is not the proper color call a qualified service technician for service Let furnace heat until blow
26. entially hazardous con ditions Do not try to repair controls Replace defective controls with UPG Source 1 Parts Never adjust pressure switch to allow furnace operation 129099 BUM J 0112 FURNACE CONTROL DIAGNOSTICS The furnace has built in self diagnostic capability If a system problem occurs a fault code is shown by a blinking green LED It is located behind a clear view port in the blower compartment door DO NOT turn off furnace power as this action will clear the control s memory of the fault The control continuously monitors its own operation and the operation of the system If a failure occurs the LED will indicate the failure code If the failure is internal to the control the light will stay on continuously In this case the entire control should be replaced as the control is not field repairable Flash sequence codes 1 through 6 are as follows LED will turn on for one second and off for one second This pattern will be repeated the number of times equal to the code For example six on flashes equals a number 6 fault code All flash code sequences are broken by a 2 second off period IGNITION CONTROL Normal flame sense current is approximately 3 7 microamps DC va Low flame signal control lockout point is 0 9 microamps DC va 1 FLASH Ignition failure 2 FLASH Combustion air pressure switch closed this indicates that the normally open pressure switch contacts are
27. er cycles on Turn thermostat down Observe burner to make sure it shuts off Let the furnace cool and blower cycle off AWARNING Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the furnace and allow blower to run until fur nace cools down and blower shuts off before shutting off the electrical supply oP oh Natural Gas Operation The furnace is designed for 7 W C inlet pressure Pressure is reduced to 3 1 2 W C by the pressure regulator in the gas valve Propane Gas Operation Inlet pressure to the gas valve must be 11 W C When properly con verted to Propane gas the pressure is regulated at 10 W C INSTRUCTIONS FOR EXAMINING THE FURNACE INSTALLATION It is the owner s responsibility to ensure that an annual inspection of the entire heating portion of the unit is made by a qualified service agency Examine the furnace as outlined below in steps 1 6 before each heating season 1 Examine the heat exchanger through an access panel located on the supply air plenum Visually examine the exterior sections of the vent combustion air piping and the vent connectors to be sure that they are physically sound without holes or excessive corro sion 2 Examine the vent pipe making sure it is firmly in place and is physically sound without holes and all of the connections are secure 3 Examine return connections for Modular or Manufactured Mobile Homes
28. he gas valve to the furnace before shutting off the electrical supply 5 Do not use this furnace if any part has been under water A flood damaged furnace is extremely dangerous Attempts to use the fur nace can result in fire or explosion A qualified service agency should be contacted to inspect the furnace and replace all gas controls control system parts electrical parts that have been wet or the furnace if deemed necessary 129099 BUM J 0112 129099 BUM J 0112 6 NEVER Store flammable materials of any kind near your fur nace Gasoline solvents and other volatile liquids should be stored only in approved containers outside your home These materials vaporize easily and are extremely dangerous 7 NEVER Store cleaning materials near your furnace Materials such as bleaches detergents powdered cleansers etc can cause corrosion of the heat exchangers 8 NEVER Use the area around your furnace as a storage area for items which could block the normal flow of air This flow of air is required for ventilation of the various furnace components AWARNING FIRE OR EXPLOSION HAZARD This furnace is designed and approved for use with Natural Gas and LP Propane Gas ONLY DO NOT BURN ANY LIQUID FUEL OR SOLID FUEL IN THIS FURNACE Burning any unapproved fuel will result in damage to the furnace heat exchanger which could result in Fire Personal Injury and or Property Damage While you are away Your furnace i
29. heat exchanger of any remaining gases Next the hot surface ignitor glows and after a warm up period the gas valve opens and ignition occurs A short time later the blower starts and dis tributes the warm air throughout the home When the temperature set ting on your thermostat is reached the gas valve closes the main burner is turned off and the blower continues to run until the remaining warm air in the system is distributed When the blower stops the heat ing cycle has ended IF FURNACE FAILS TO OPERATE PROPERLY 1 Check setting of thermostat and position of heat cool switch if air conditioning is installed If a set back type thermostat is employed be sure that the thermostat is in the correct operating mode 2 Check to see that electrical power is ON 3 Check to see that the lever or switch on the gas control valve is in the full ON position 4 Make sure filters are clean return grilles are not obstructed and supply registers are open 5 Be sure that furnace flue piping is open and unobstructed When You Call For Service Assistance Very often time can be saved if you will give the service agency the MODEL and SERIAL NUMBER of your furnace This will enable him to determine the specific components used and perhaps to better identify the possible problem and be better prepared if a service call is required To Contact Your Serviceman fill in COMPANY ADDRESS TELPHONE All appliances need mainte
30. itary Products 129099 BUM J 0112 IRAINNSFURIVIER LINE VOLTAGE BLACK HIGH SPEED RED LOW SPEED ells Ja e D s ls OUO DOd mm D 5 5 21 JUMPER FANON TE ADJUSTMENT JUMPER 2 O DOO 000 DOO W FUSE 3A Ed aut gt FIGURE 6 Furnace Control Board Hot Surface Ignition System AWARNING HOT SURFACE IGNITION SYSTEM Do not attempt to light this furnace by hand with a match or any other means There may be a potential shock hazard from the components of the hot surface ignition system The furnace can only be lit auto matically by its hot surface ignition system TROUBLESHOOTING The following visual checks should be made before troubleshooting 1 Check to see that the power to the furnace and the ignition control module is ON 2 The manual shut off valves in the gas line to the furnace must be open 3 Make sure all wiring connections are secure 4 Review the sequence of operation Start the system by setting the thermostat above the room temperature Observe the system s response Then use the troubleshooting section in this manual to check the system s operation AWARNING Never bypass pressure switch to allow furnace operation To do so will allow furnace to operate under pot
31. nance by serviceman at the beginning of each heating season Call your nearest authorized service technician to 1 Replace filters Clean all lint and dust from around furnace 2 Remove fan and clean all dust and lint from unit with stiff bristle brush 3 Inspect combustion chamber the transition into the blower com partment flue collar and roof jack 4 Check the gas valve and line connections for leaks 5 Make any adjustments necessary for good operation NOTICE The coil panel provides a good removable access for inspecting inside the furnace casing Smoke or reflected light inside the casing indicates the presence of leaks in the heat exchanger SAFETY INFORMATION Read the Instructions Below Before Trying to Start the Furnace AWARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury and or loss of life 1 This appliance does not have a pilot It is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand 2 BEFORE OPERATING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor 3 Use only your hand to push the gas control switch to the on posi tion Never use tools If the switch will not operate by hand don t try to repair it call a qualified service technician
32. nsed within 0 8 seconds The gas valve will de energize and the control will begin a recycle operation A normal ignition sequence will begin after a 15 sec ond inter purge If during the three recycles the gas supply does not return or the fault condition is not corrected the ignition control will lock out for 60 minutes During burner operation a momentary loss of power for 50 milliseconds or longer will de energize the gas valve When the power is restored the gas valve will remain de energized and the ignition sequence will immediately restart As the gas starts to flow and ignition occurs the flame sensor begins its sensing function If a flame is detected during the 10 second flame sta bilization period the circulating blower will energize 30 seconds after the gas valve opens 20 seconds after the flame stabilization period ends Normal furnace operation will continue until the thermostat circuit between R and W is opened When the thermostat circuit opens the ignition control is de energized When the ignition control is de ener gized the gas flow stops and the burner flames are extinguished The ventor continues to operate for 15 seconds after the gas flow stops The blower motor continues to operate for the amount of time set by the fan off delay Jumper located on the ignition control board Refer to Figure 6 The heating cycle is complete and the furnace is ready for the start of the next heating cycle Johnson Controls Un
33. ny IMC Nowe DCH d SE O e MOTA TA ESIVN8NO4 D weu A a iS o wy A Ai j renos Tanga vi 30 310YINOD 15 14 KE Bee R ups LL o 4 ton TI nu ee er x woo Td Aen NOLLINSLO p AE 3078 qe YOSNIS WU SIv 7134 YSLINOT ION HION IS aie me a o D s 70 e e Gs 34831 N3 P SEH We AOKCR ER o ele LONGNLG LONONI O ENG be D wg mm Sei T BOINA 39113 NO ROO tyg ASI gona Cg XN37N09 30 3009 Im O yg SITO DEZ DEZ AJA O0 109 38IM Ma aas aez 038 alo EN BR ESM e E e e zv9 HOLOM 3NVH9 Lv3H 30 3dveNos Gaal ud Tenos THIONN JAVA SV9 IND A coz 060 aii e MITO 1009 Ki VR Hm Hm S Droa Na WT A SA NT7974NVHI T Q tenour THIONT T oe zzo EEN Sv8 39n08 M01 038 SHEI fe a x o mos ao san e Nua DAT Y UNELVLNNNOD Si Tonos TION omar ono aaa HOLIAS 319901 eN YE YNOd ALAYHI BIOA vilo CNR L o dS NOG za LMVH 8ION 0 g y ero anou 81ON oe 9so we X04 Io 335 SZ u 208 AIMITIANOS ENZLOM ILON HIOA 09 1 SI NOILVIN3MIW lt Sq i Tavan WALD uoa Gauna YOLON Y M0718 310N 33S 09 SIl AIdANS YIM0d e Be wag INANI 1N3N308099V8 30 INNVEDVIO 3183 7143N0S YI 30 NVE9VIO NOTLOANNOO 3SS3LIA 20 318VH0 38IVIN3N3 13 3ANV89avia NV49VIO 43d0V LYVHO 033445 OW 18 DGAA iagram D iring Wi FIGURE 8 Johnson Controls Unitary Products 12 129099 BUM J 0112 SOLO V OMN S6ZSI Digg OHLNOI ni NOLLIN9I NO SLOVINOD AW138 S301A30 ONY
34. omponents to be sure they are in good condition and that there are no obvious signs of deterioration e Check the evaporator coil drain lines to make sure there are no cracks or leaks Check for dirt or lint on any surfaces or on components Do not try to clean any of the surfaces or components Cleaning of the fur nace and its components must be done by a qualified service pro fessional If during the inspection of your furnace you find any of the following conditions e Excessive amounts of dust and lint on components e Damaged or deteriorated components or surfaces e Leaks or blockage in the vent pipe passages e Water on any surface inside or outside of the furnace Johnson Controls Unitary Products 129099 BUM J 0112 Do not operate the furnace and call a certified dealer servicing con tractor to check and or clean your furnace or for more information if you have questions about the operation of your furnace If all components appear to be in good operating condition replace the front panels Follow the operating instructions to place the furnace in operation Air Filters Dirty filters greatly restrict the flow of air and may cause damage to the moving parts of the furnace If the filters become clogged the heat exchangers and blower motor could overheat resulting in a potentially dangerous situation The filters should be checked every 3 months DO NOT USE PLEATED FILTER in this furnace On new construction
35. rews that hold the burner assembly to the combus tion air box and remove the assembly 6 Remove burner from the burner assembly 7 Rinsing in hot water may clean burners 8 Reassemble in the reverse order Cleaning the Heat Exchanger NOTICE It is recommended that replacement gaskets be available before removing burner assembly and combustion air box Lower Heat Exchanger Access 1 Turn off the electrical power to the unit and turn off gas supply at the shutoff valve 2 Remove the blower and burner compartment access doors Dis connect the gas supply piping at the union to permit removal of the entire burner and gas control assembly from the vestibule panel Use the wrench boss on the gas valve when removing or installing this piping 3 Unplug the igniter from the wire harness Disconnect sensor wires Identify and note the location of all leads for ease of reinstallation 4 Remove the screws holding the burner assembly to the vestibule panel and remove this assembly Handle the assembly carefully since it contains the igniter which is fragile and easily broken The lower portion of the heat exchanger will now be exposed Remove any soot and scale Vacuum loose soot scale and dirt from the heat exchanger 5 After cleaning is complete replace all components in reverse order Re gasket all surfaces which required a gasket Reconnect all wiring Reattach vent pipe and gas supply lines before restoring service to
36. s equipped with a safety device which will shut off the supply of gas to the burner in case of malfunction For this reason it is never practical to assume that the furnace will operate unattended for a long period of time especially if there is a possibility of damage to your property because of freezing So if you plan to be away from home arrange for someone to check your house every day SEASONAL SERVICE INFORMATION During extreme cold weather ice may form on the furnace roof jack crown Small amounts of ice forming on the roof jack will present no problem to proper furnace operation However excessive ice formation could restrict the combustion air supply to the burner causing inefficient burner operation When the temperature is very cold near zero or below it is recom mended that the roof jack be inspected every day or more frequently if required If ice has started to collect on the roof jack crown it should be carefully broken off Your Service Technician Your furnace s best friend is your qualified service technician If the unit gives any indication of improper operation call your service technician If the service technician is allowed to perform the normal routine care of your furnace he can many times detect potential difficulties and make corrections before trouble develops Preventative maintenance of this type will allow you to operate the unit with a minimum of concern and at the same time will pay for itself in a
37. s will become dust laden after long months of operation The entire blower assembly should be inspected annually If the motor and wheel are heavily coated with dust they can be brushed and cleaned with a vac uum cleaner If the blower cannot be properly cleaned without removing it from the furnace then call a qualified service agency Only a qualified service agency can perform this service AWARNING Make sure you DO NOT move the clip on weight on the indoor fan wheel when cleaning the wheel This weight is used to balance the wheel Moving the weight will cause the fan wheel to vibrate Motor Lubrication The motors in these furnaces are permanently lubricated and do not require periodic oiling 129099 BUM J 0112 SECTION II SERVICE AND MAINTENANCE MANUAL SAFETY SECTION This section has been designed to assist a qualified service agency in performing service and maintenance on this appliance The homeown ers and or end user must never attempt to perform any service or main tenance on the appliance especially when it involves the removal or adjustment of any parts and or components The following safety rules must be followed when servicing the furnace AWARNING ELECTRIC 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 operation serious injury and death or property
38. specifica tions outlined in the Installation Manual provided with the product 3 in accordance with all national state provincial and local codes and 4 in the original residence Exclusions Shipping freight or material charges Damages resulting from transportation mishandling improper application installation or servicing Damages resulting from accident abuse fire flood or other acts of nature Use of the product in a corrosive atmosphere Alteration tampering defacing or removing the product serial number will serve to void the warranty Damages resulting from inadequacy or interruption of electrical service improper energy supply blown fuses improper wiring external to the unit or other like damages 7 Damages resulting from the use of components not approved by UPG 8 This warranty does not cover consequential damages incidental damages or incidental expenses including damages to property 9 Damages caused by failure to perform normal or routine maintenance as set out in the operation and service instructions 10 Cleaning replacement of filters or any other routine maintenance as set out in the User s Information Maintenance and Service Manual 11 Replacement or cleaning of nozzles or orifices 12 Fuses either internal or external to the product 13 Excessive fuel or electricity consumption THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABIL ITY A
39. stuck in the closed position The control confirms these contacts are open at the beginning of each heat cycle This would indicate a faulty pressure switch or mis wiring 3 FLASH Combustion air pressure switch failed to close this indicates the normally open pressure switch contact did not close at the begin ning of the heat cycle This could be caused by a number of problems faulty inducer blocked vent pipe broken pressure switch hose or faulty pressure switch 4 FLASH Limit Switch Open this indicates that a primary or auxiliary limit switch has opened its normally closed contacts With this fault code the control will operate the supply air blower and inducer This condition may be caused by dirty filter improperly sized duct system incorrect blower speed setting incorrect firing rate or faulty blower motor 5 FLASH Gas flow with no call for heat Check gas valve and gas valve wiring RAPID FLASHES Reverse Polarity reverse polarity indicates reverse line voltage polarity Both heating and cooling will be affected Check polarity of both STEADY ON Normal Operation 60 MINUTE AUTOMATIC RESET FROM LOCKOUT This control includes a watchdog type circuit that will reset from a lockout condition after 60 minutes Operational faults 1 3 4 and Steady On will be reset This provides protection to an unoccupied structure if a temporary con dition exists causing a furnace malfunction An example would be a low incoming gas suppl
40. t Surface S1 02541021000 S1 02541021000 S1 02541021000 S1 02541021000 16 Filter 2 Req d 16x20x1 S1 1214 2511 S1 1214 2511 S1 1214 2511 S1 1214 2511 17 Panel Door Upper Accessory See Page 4 18 Panel Door Lower Tall 7900 7611 7900 7611 7900 7611 7900 7611 19 Motor See Note 2 old see note 4 S1 1468 220P S1 1468 220P S1 1468 220P S1 1468 220P Motor new see note 4 S1 02435603000 S1 02435603000 S1 02435603000 S1 02435603000 20 Assembly Motor Mount See Note 2 S1 37319806100 S1 37319806100 S1 37319806100 S1 37319806100 21 Plug Connector S1 02521192000 S1 02521192000 S1 02521192000 S1 02521192000 Capacitor Run See Note 3 Old see note 4 S1 02420063000 S1 02420063000 S1 02420063000 S1 02420063000 22 Capacitor New see note 4 S1 02435602000 S1 02435602000 S1 02435602000 S1 02435602000 Capacitor Units built on after 8 11 2008 S1 02435813000 S1 02435813000 S1 02435813000 S1 02435813000 23 Wheel Blower 1 02619654003 1 02619654003 1 02619654003 1 02619654003 24 Top Casing 1 07319801342 1 07319801342 1 07319801342 1 07319801342 25 Diagram Wiring 155887 155887 155887 155887 26 Strike Door S1 02118364000 S1 02118364000 S1 02118364000 S1 02118364000 27 Latch Door S1 02118365000 S1 02118365000 S1 02118365000 S1 02118365000 28 Housing Blower S1 37323864001 S1 37323864001 S1 37323864001 S1 37323864001 29 Gasket Combustion Air Box S1 01006900005 S1 01006900005 S1 01006900005 S1 01006900005 30 Gasket Burner S1 0100
41. talled If a set back type thermostat is employed be sure that the thermostat is in the correct operating mode 2 Check to see that electrical power is ON 3 Check to see that the knob or switch on the gas control valve is in the full ON position 4 Make sure filters are clean return grilles are not obstructed and supply registers are open 5 Be sure that furnace flue piping is open and unobstructed If the cause for the failure to operate is not obvious do not attempt to service the furnace yourself Call a qualified service agency or your gas supplier 1 Examine Vent Pipe 2 Examine Filter Door 3 Remove Filter Door to Examine Combustion Air Pipe 7 Remove Burner Door to Examine Burner Flame 4 Examine Burner Door 5 Remove Burner Door to Examine Furnace Base and Air Conditioning Coil Panels FIGURE 3 Furnace Examination Checkpoints 129099 BUM J 0112 HOW YOUR GAS FURNACE WORKS Your furnace is a very easy appliance to take for granted Season after season it sits there in your home keeping you warm and comfortable For this reason you may never have given much thought to the way your furnace operates In order to get the safest and most efficient oper ation from your furnace you should understand how your furnace does its job When you set your thermostat to provide more heat in your home you are starting the heating cycle of the furnace First the inducer motor starts to purge the
42. y pressure preventing unit operation When the gas pressure is restored at some point the watchdog would restart the unit and provide heat for the house NOTE If a flame is detected the control flashes the LED for 1 8 of a second and then enters a flame stabilization period lt _ _ Thermostat Calling for Heat gt Thermostat Satisfied Seconds 05 32 0 Fan on Delay 12 Seconds ON THERMOSTAT OFF ON INDUCER OFF H ON IGNITOR OFF MAIN VALVE OFF CIRCULATING BLOWER 60 90 120 180 SEC LOFF Selectable Fan Off Delay FIGURE 7 Furnace Event Control Schedule Johnson Controls Unitary Products 129099 BUM J 0112 SECTION Ill REPLACEMENT PARTS LIST All components assemblies accessories and replacement parts for this furnace are available through your qualified service installer or refer to the service center list in your booklet It is not recommended that the homeowner purchase install or replace any components of this furnace Contact your local contactor dealer or service provider for additional information i LENAN i U BURNER ORIFICE E SEE CHART Y wae
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