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Service Instructions

1. qo p 1 mq qnom poe lt Do gt p owes J ce ce ee gt ow gt lt gt 37 SERVICING S 6 CHECKING AUXILIARY LIMIT CONTROL The auxiliary limit switch B13701 55 is a safety control that senses high temperature within the furnace or duct work This control is preset to open at 120 F and close at 90 F It is not adjustable and automatically resets The control is located in the blower compartment of the furnace on the blower housing Auxiliary limits may be on the side or front of the blower housing 90 Auxiliary Limit GMPNO403 060 3 NA GMPN 100 4 38 80 Auxiliary Limit GDT045 3 1 601005 1 0904 1 GMPO75 3 1 GMPO75 4 1 GMP 10 5 1 GMP 1254 1 1255 1 GMP1505 1 GMPE 125 1 050 1 05 5 1 GMPH080 5 1 1205 1 2 0453 0703
2. 56 Checking Main Burners 57 SERVICING S 1 CHECKING VOLTAGE Aywarnine HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 1 Remove the burner door on 80 furnace or blower com partment door on 90 furnace to gain entry to Junction Box 2 Remove cover from Junction Box and gain access to incoming power lines With Power ON LINE VOLTAGE NOW PRESENT 3 Using a voltmeter measure the voltage across the hot and neutral connections NOTE To energize the furnace the Door Interlock Switch must be engaged at this point 4 Noreading indicates open wiring open fuse no power or etc from unit to fused disconnect service Repair as needed 5 With ample voltage at voltage connectors energize the furnace blower motor by jumpering terminals R to G on the integrated ignition control 6 With the blower motor in operation the voltage should be 115 volts 10 percent 7 If the reading falls below the minimum voltage check the line wire size Long runs of undersized wire can cause low voltage If wire size is adequate notify the local power company of the condition 8 After completing check and or repair replace Junction Box cover and reinstall burner compartment door on
3. I S31ON Vea GMT GMTH al UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 6 lt a tc o 6 2 9 gt tc 0 lt o o HIGH VOLTAGE a 9 5 H3MOd 09 0 91 OL LINN SNISN3QNOO 1 09 9 Addf S SISSVHO WIRING DIAGRAMS A warnine date wiring 10 Wiring is subject to change Always refer to the wiring diagram the unit for the most up 69 GMT lt lt 2 UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 6 a o 6 2 gt zi o o EH a lt 5 A warnine 0682 8862 HOS 9334 SISN 5 09 839039 0 8 O 3 N OL WHOJNOO ATLN3NVAH3d 38 LSNW 1 ONINHVM 72 38801 SV NOLLVINSNI HO ANY 3215 AWVS 1 38 16 38IM LN3A3O V 133H E SALON MO
4. peeds N23 941 Aypeuonouny jueJeyip jueJeyip yoo Aay 001 10 YOOUD se JO oyloads 10 Aog ASU eouis JOJOLU 1294409 15 310 e129 ejesuepuoo 5 MOAHO 9 9 ejpueH 99944 si 1010 19 sejnuiu 2 eunisioIN einjsioui pue peunooo Ul 94 1510 1 pue 1010 sey 10 JO OJON Jredai Joud 440 Jamod ed 440 995 994 59 2 peeds 1284400 Bumes peeds 12911099 9 08941984 JONP 1984109 499U 40 Ajddns 12911090 5 W49 5 40 198 05 1 ye 10 sjunH sonpel peeds
5. date wiring 10 Wiring is subject to change Always refer to the wiring diagram on the unit for the most up 63 lt lt A 08 9828 HOLIMS dINELLY3AO YOVIS OS 03348 HOLIMS 1 SOH OL 38 AYN 3 9 ING Genoa SA MOTISA HOIN JHL 80 31 EDINA 3mg 38 ud AOWA HOLIMS 51 0109 AHIM 2 19901 O 3 N OL WHOJNOO YMO HCOON 8 A1IN3NVWNH3d 5 LOH YISH 5 LOH ISH 9 01 SY NOLLVINSNI JO 3OVLTOA 3NWASVO 9 3215 SWVS 3H1 38 4 38IM 1 1 HOSN3S 3 HOLIMS SQ 3009 1 PERSONAL INJURY OR DEATH UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE 6 a o 6 2 gt lt
6. E 2 0 2 gt Ez lt 5 a lt 2 22 5 1 2 6 n E 8 z A lt 5 5 9 0 lt 5 _ ISOLATION RELAY 00000 00 NEUTRALS N lt Ix z D Lo ita oy B 000 Wiring is subject to change Always refer to the wiring diagram the unit for the most up to date wiring GSU amp GSM NOTE 1 MUST USE ONE SOURCE OF POWER FOR BOTH FURNACES TWINNING DIAGRAMS _ GMPN GMT GMNT GSMS TWINNING DIAGRAM GMP GMPX GMPN GMT GMNT amp GSMS HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 1012838932 HSA 2 B180913 1012 933 FURNACE 2 GREEN BLUE ISOLATION RELAY SINGLE STAGE THERMOSTAT CONDENSER 1 CONTACTOR COIL mm CONDENSER 2 CONTACTOR COIL S 2 lt 5 COOLING TWINNING W
7. ejnpouu ueo yey uonipuoo 10 85992 Ajuo sJojouu peeds 423 991 Aupeuonounj uaap Aay sepoui 0 48941 5 ejnpouu jue uueoe deJ 1994009 esnjsnulnoA ILON aunjoeynuew jueuudinbe Aq Ayoedeo juae 001 88 10 5 ejesuepuoo 5 MOSHO 39 1510 4 SERVICING yeda 440 Jamod uin 15084 440 Jamod 9189 04 e pueH Buiuedo Buroeuuoosip Jaye sejnuiu JredaJ 01 40 0 440 9189 04 e pueH 1 6 0 540 Jaye JredaJ 01 440 10 pue peeds 1284100 1sn py 5 594 JONP 199 09 59 JOY eoejdeJ 29u 6uyjnd 10 jeued
8. o o EH a lt 5 AlddNS H3MOd 09 L SLL OL WARNING 49154 LINN 1 1 09 54 SISSVHO WOH A Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 64 lt A UNIT MULTIPLE POWER SOURCES MAY PRESENT FAILURE DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 2 lt a tc o 6 2 9 z tc ra 0 lt e o o lt 5 x WARNING A 908 5528 52 00134 NO 038 Odd 3009 W907 0 3 N OL IWHOJNOO A11N3NVINH3d 38 LSNW 13NIBVO 25501 SY NOLLVINSNI 30 3215 IWYS 3H1 38 IN33OV 1d3H E MOTIBA ALIHM 314 Nid O 9 ama 18 xovigs a 2862 HO100 386 MOT 38 AHO1OV 773405 5NIBIM ZM HOLINOI 33 4 8 LOH HISH H3NHOJSNVHL HL HOLON ON HOLIMS
9. 09 L SLL OL LINN TVNOILdO date wiring 10 Wiring is subject to change Always refer to the wiring diagram the unit for the most up 67 amp A SERIES WIRING DIAGRAMS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH o 6 a o 6 2 gt lt o o HIGH VOLTAGE A warnine 50845079 ZW ONY IN NO 139 Sav 03348 HOLOW 038 01 328 90 12004 83003 W907 8 O 3 N OL WHOJNOO ATIN3NVINH3d 38 LSNW LANISVD 72 0800 SV NOLLVINSNI dO 3215 IWYS 38 ISN 38IM LN3N3O V 1d3H 1 SILON 9 O 0 9 9 3 8 18 8 3009 30705 3009 HOLIMS LN3A H3MOd HAd H3MOCd HOLIMS 35055354 Sd HOLIMS S1 801 AX T3H HOLINSI 33 38 8 YISH YOUN SOVAYNS LOH ISH
10. Instructions 80 GMP GMPE GMPH GMPV GMT GMTH GPD 90 GMNT GMNTE GMNV GMPN GSM GSMS GSU This Forced Air Central Unit Design Complies With Requirements Embodied in The American National Standard National Standard of Canada Shown Below ANSI Z21 47 CSA 2 3 Central Furnaces This manual is to be used by qualified professionally trained HVAC technicians only Goodman does not assume responsibility for property damage or personal injury RS6610003 due to improper service procedures or services performed by an unqualified person January 2007 Copyright 2000 2007 Goodman Manufacturing Company L P TABLE CONTENTS IMPORTANT INFORMATION 23 SERVICING 30 56 PRODUCT INFORMATION 4 12 SERVICING TABLE OF CONTENTS 32 SPECIFICATIONS 13 23 TROUBLESHOOT ING anis tranh ab itat 46 8 1 112 111511 cf 24 27 WIRING DIAGRAMS 58 77 MAINTENANCE lt 28 IMPORTANT INFORMATION Pride and workmanship go into every product to provide our customers with quality products Itis possible however that during its lifetime a product may require service Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with
11. OL 38 AYN HOLON SQV31 HION SISSVHO 3ovNund 5 H3MOd 09 LSLL OL SNISN3QNOO date wiring to Wiring is subject to change Always refer to the wiring diagram on the unit for the most up 61 SERIES v62 E 6v18 HOLIMS dW3LY3AO 15 OS HOLIMS LNOTION sou ama HOLIMS 38 8939 594 218 243 HOLIMS 154 HOLIMS LIWIT 1009 HOOQNI 1V3H HOOQNI 4980 NOLLNOI 33 3 9 LOH HISH 33 39 LOH ISH IMYA SVD HOSN3S 53 HOLIMS 50 HOLIMS Sav 2537 INSNOdWOO ZW IW NO 139 60 31 YOLOW 5 v 31IHM 03345 G3YINOAY OL 38 HOLOW 3H L SQV313HL 31 4 83009 201 OL ATLN3NVIAH3 d 38 1 8 ONINHVM Z 8 40901 SV NOLLVINSNI 30 3215 IWYS 38 ania 38 SMW SHIM INSIN3OVId3H 1 yovla 8 SALON 3
12. SOH INA HOLNSA Ad HOLIMS Sd HOLIMS S1 29 HOOGN 801 9 891 5 LOH ISH INWA SVO HOSN3S S4 YH HH 38 1000 49 Sa HOLIMS SW H3NHOHSNVHL 4 048 8 1 AWISOWHSHL OL OL date wiring to Wiring is subject to change Always refer to the wiring diagram on the unit for the most up 65 lt lt 2 81 666 AVI3H IV3H YH 31IHM M ANO a 3 1009 YO 81306 SZL 0013 0 NO 038 934 3 IN3A H3MOd ie H3MOT18 89 18 83060 1 001 0 3 N OL WHOJNOO aal 38 ISIN L3NIBVO Z H3 HOJSNVHl HL 804 TWNIDIHO SV NOLLVINSNI 30 NMOHH HH HOLIMS 39055399 Sd 3dAL
13. AD YOSNAS 83 HOLIMS SA 09 9 AlddNS MONIA OTIN SONVHO 493 4 3M8 daw 5 d 03345 G3YINDAY JHL OL 38 AVW HOLOW 50737 H10N SISSVHO am 5 OL LINN SNISN3QNOO TYNOILdO Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 68 O HOLIMS SOM 5 01 9 H3MOd 3m8 38 AVW HOLOW 3 4 5 1 NMOHS Ad 340 ANY HOLMS 34 8834 Sd 418 3345 xovg a HOLIMS S7 HOIHSIS MEOLO TITON E 3009 40109 SHIM 83003 W901 O 3 N OL WHOINOO AVIY HOLINOI 3Ov HfIS LOH YISH LSNW 18 8 ONINYYM Z BOIINDLSOVAH S JOH 500 39V170A 9 AD 0 50 AHOLOV SY NOLLVINSNI JO 309435 ATH 3 3215 IWYS 38 8000 HOLIMS 580 ISN
14. Ampacity 1 25 x Circulator Blower Amps ID Blower amps 3 MaximrumOvercurrent Protection refers to maximumrecommended fuse or circuit breaker size NOTES 1 All furnaces are manufactured for use on 115 VAC 60 Hz single phase electrical supply 2 Gas Service Connection 1 2 FPT 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Hectrical Code and or all existing local codes 16 SPECIFICATIONS GDT MODEL GDT045 3 GDT070 3 GDT090 4 GDT115 5 Btuh Input US Natural Gas 100 000 115 000 Output US Natural Gas j 80 000 100 000 Btuh Input US LP Gas 100 000 Output US LP Gas 80 000 A F U E 80 Rated External Static w c Temperature Rise F Blower Wheel D x W 10X6 10X6 10X8 115 60 1 115 60 1 115 60 1 115 60 1 Minimum Circuit Ampacity 5 2 5 2 7 8 7 8 Maximum Overcurrent Device 15 0 15 0 15 0 15 0 Primary Limit Setting F Auxiliary Limit Setting F Rollout Limit Setting F Fan Delay On Heating 30 secs 30 secs 30 secs 30 secs Off Heating 150 secs 150 secs 150 secs 150 secs Fan Delay On Cooling 5 secs 5 secs 5 secs 5 secs Off Cooling 60 secs 60 secs 60 secs 60 secs Fan Delay On Fan Only 5 secs 5 secs 5 secs 5 secs Gas Supply Pressure Natural Propane w c 7111 7 11 7 11 7 11 Manifold Pressure Natural Propane w c 3
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16. SQV313H1 83009 17901 8 OL 0 110 A1LN3NVIAHSd 38 LSNW 13 45801 SV NOLLWINSNI JO 3215 1 38 ana ISIN 1 SALON 3003 IOHLNOO G3TIVISNI 07314 TWNIWHAL Q3 HVIANQ O GATIVISNI 01313 TIWNIIWH3I Q3 HVMW 321145 8 ATddNS HMOJ 1109 91 HOLIMS dW31H3AO MOVIS OS 1101108 SOH AV I3H INJA H3MOd HOLN3JAH3MOd XO8 8INOO HOLIMS 31 883841 584 HOLIMS 3HfiSSdHd 154 HOLIMS ST AV I3H 1009 H3MO 18 HOOQNI 1V3H HOOGNI tagal HOOQNI 5 LOH YISH 33 3 8 LOH ISH 549 AD HOSN3S AWV14 54 HOOG HOUMS STV 09 3997 LNANOdWOO _ SISSVHO 3ovNund RD 5 H3MOd 09 9 OL UNN Wiring is subject to change Always refer to the wiring diagram the unit for the most up to date wiring 60 GMNT SERIES WIRING DIAGRAMS UNIT MULTIPLE POWER SOURCES MAY BE PRESE
17. 25001 10 INJSION peg 5 0 55 ul suid payeasun ILA JOXe9Jq 40 95 uedo uoiMs 40 enuey e gissod 4010 10 ewou SI J 10 dn uejs WOU 51 8111 05 W49 ye 40 S UNH Ajeoneue sunu ing SeS 20 jueniuuejur 10 pue dn JO pas Buraq dn 1050 JO1O N ou 1250 HEIS 5001 J010 A ueis 1010 ON Burueis ueuw Anubis 55901 010 JOjoUJ peeds e qeueA s uondisosag SIOJOW 19 1019 1195 ejqeueA INDY 40 SERVICING pejoedxeun pue jonpoid SPIOA eui 5 jeuiqeo sjonp pue yooyo dup 2 peoejdei eu BABY ULI Teu uompuoopeDreuorepunjoppoeu Ajuo eui
18. 3215 38 anm H3TOHINOO OW 13 SHIM 1IN3I3O V d3H yovla 8 HOLIMS 3101 3905 NOLLIND 5 LOH ISH AD CHTIVISNI CHI HOLIMS 53 TVNIAH3L Q3 VINNn O H3MOd G3TIWSNI 07314 HOSN3S 3 3 84 m TWNINYAL 033844 MOT 80 1 321195 HOLIMS GN3O311N3NOdWOO 310N 335 UNIT MULTIPLE POWER SOURCES PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 6 a o 6 gt zi lt 5 WARNING M SNISNEINOO IVISOWHSHLOL OL Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 66 lt A UNIT MULTIPLE POWER SOURCES MAY PRESENT FAILURE DO SO MAY CAUSE PROPERTY DAM
19. the unit for the most up to date wiring 72 0 8 5528 E 0 3LIHM s 53909 1 201 OL WHOJNOO 38 1 13NI8VO 9 NINHVM 9 0 8 5 3mg 0 8 3009 40109 HOLIMS SOY AV T3H H3MOd YALNAA Ad HOLIMS 34 983 Sd HOLIMS LINN S1 H3MO 18 HOOGN 4 5 LOH ISH SNWASVO AD 933 aauinoad AHL OL 38 AVN YOLOW 3HL SQV313HL 73 date wiring to 0601 SV 30 SOV LION HOSS ANY SA 3dAL 328 IWYS 3H1 38 HOLIMS SQ ISAW IN3IN3OV1d3H I 8310 3005 NEM GPD GDT GDT A amp B SERIES UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 2 gt 6 lt a o tc o 6 2 9 gt 0 lt lt o o 5 H3MOd 09 1 911 OL LINN SNISN3QNOO 1 09 41 5 SISSVHO 3o
20. 10 3 5 10 Orifice Size Natural Propane 43 55 43 55 43 55 Number of Burners 2 3 5 Filter Size Permanent Disposable Vent Connector Diameter inches Shipping Weight 105 Heating This fan delay timing is adjustable 90 120 or 150 seconds 150 seconds as shipped Minimum Circuit Ampacity 1 25 x Circulator Blower Amps ID Blower amps 3 Maximum Overcurrent Protection refers to maximum recommended fuse circuit breaker size NOTES 1 All furnaces are manufactured for use on 115 VAC 60 Hz single phase electrical supply 2 Gas Service Connection 1 2 FPT 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Electrical Code and or all existing local codes 20 SPECIFICATIONS GMTH A B MODEL GMTH045 3A B 70 090 5 Btuh Input US Natural Gas Output US Natural Gas Btuh Input US LP Gas Output US LP Gas A F U E Rated External Static w c Temperature Rise F 45 000 36 000 40 000 32 000 80 70 000 56 000 60 000 48 000 80 90 000 72 000 80 000 64 000 80 10X6 10X8 11X10 1 3 3 4 3 4 4 3 3 Blower Wheel D x W Blower Horsepower Minimum Circuit Ampacity MCA Maximum Overcurrent Device Primary Limit Setting F Auxiliary Limit Setting F Rollout Limit Setting F Fan Delay On Heating Off Heating Fan Delay On Cooling
21. Btuh Input US LP Gas Output US LP Gas A F U E Rated External Static w c Temperature Rise F Pressure Switch Trip Point w c Blower Wheel D x W Blower Horsepower Blower Speeds CFM 0 5 5 Power Supply Minimum Circuit Ampacity MCA Maximum Overcurrent Device Transformer VA Primary Limit Setting F Auxiliary Limit Setting F Rollout Limit Setting F Fan Delay On Heating Off Heating Fan Delay On Cooling Off Cooling Fan Delay On Fan Only Gas Supply Pressure Natural Propane w c Manifold Pressure Natural Propane w c Orifice Size Natural Propane Number of Burners Filter Size in Permanent Disposable Vent Connector Diameter inches Shipping Weight Ibs 45 000 36 000 40 000 32 000 80 70 000 56 000 60 000 48 000 80 GDT B 100 000 115 000 72 000 92 000 80 000 100 000 64 000 80 000 80 80 an 10 6 1 3 4 1262 115 60 1 8 1 30 secs 150 secs 5 secs 60 secs 5 secs 7 11 3 5 10 43 55 2 10X6 1 3 4 1262 115 60 1 8 1 30 secs 150 secs 5 secs 60 secs 5 secs 7 11 3 5 10 43 55 3 10X8 10X10 1844 2134 115 60 1 115 60 1 12 5 12 5 15 0 30 secs 30 secs 150 secs 150 secs 5 secs 5 secs 60 secs 60 secs 5 secs 5 secs 7 11 7 11 3 5 10 3 5 10 43 55 43 55 4 5 Off Heating This fan delay timing is adjustable 90 120 or 150 sec
22. Gas Service Connection 1 2 FPT 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Electrical Code and or all existing local codes 22 RP RP SPECIFICATIONS GPD PERFORMANCE RATINGS Natural Gas Btuh Propane Gas Temperature Rise Model Number Range Input Output Input Output BEFORE PURCHASING THIS APPLIANCE READ IMPORTANT ENERGY COST AND EFFICIENCY INFORMATION AVAILABLE FROM YOUR RETAILER SPECIFICATION DATA Circulator Blower Circulator Blower Vent Filter Size Filter Size in Filter Size Minimum Model Circuit Overcurrent Ship Wt Number Size No of Diameter P Ampacity Protection D xW Speeds Amps Vent and combustion air diameters may vary depending upon vent length Refer to furnace installation instructions Minimum Circuit Ampacity 1 25 x Circulator Blower Amps ID Blower amps Maximum Overcurrent Protection refers to maximum recommended fuse or circuit breaker size NOTES 1 All furnaces are manufactured for use on 115 VAC 60 Hz single phase electrical supply 2 Gas Service Connection 1 2 FPT 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Electrical Code and or all existing local codes 23 DIM
23. Off Cooling Fan Delay On Fan Only Gas Supply Pressure Natural Propane w c Manifold Pressure Natural Propane w c Orifice Size Natural Propane Number of Burners Filter Size in Permanent Disposable Vent Connector Diameter inches Shipping Weight Ibs 115 60 1 12 5 15 0 30 secs 150 secs 5 secs 60 secs 5 secs 7 11 3 5 10 43 55 2 115 60 1 11 8 15 0 30 5868 150 5868 5 secs 60 5 5 secs 7 11 3 5 10 43 55 3 115 60 1 11 8 15 0 30 secs 150 secs 5 secs 60 secs 5 secs 7 11 3 5 10 43 55 4 Heating This fan delay timing is adjustable 90 120 150 seconds 150 seconds as shipped Minimum Circuit Ampacity 1 25 x Circulator Blower Amps ID Blower amps 3 Maximum Overcurrent Protection refers to maximum recommended fuse circuit breaker size NOTES 1 All furnaces are manufactured for use on 115 VAC 60 Hz single phase electrical supply 2 Gas Service Connection 1 2 FPT 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Electrical Code and or all existing local codes 21 SPECIFICATIONS GMP PERFORMANCE RATINGS Natural Gas Natural Gas Model Input Heating Capacity DOE pau pies Number AFUE Buh F GMP050 3 45 000 36 000 25 55 GMP075 3 75 000 60 000 35 65 GMP075 4 75 000 60 000 25 55 BEFORE PURCHASING THIS APPLIANCE R
24. Refer to the venting tables outlined in the Installation Manual for additional venting requirements 25 DIMENSIONS GMP 191 43 50 7 1 91 58 42 7142 e MINIMUM CLEARANCES COMBUSTIBLE MATERIALS INCHES Sides Rear Front sw B Horizontal Upflow gu ce 36 clearance for serviceability recommended Single Wall Vent SW to be used only as a connector Refer to the venting tables outlined in the Installation Manual for additional venting requirements 26 DIMENSIONS 20 1 4 34 41 17 1 8 3 4 3 4 45 2 34 NL NL J fx uw 125 16 4 je 15 10 108 18 2 Tha 1 198 4 23 28 Model Number Non Combustible Floor Base GMPE100 4 MINIMUM CLEARANCES COMBUSTIBLE MATERIALS INCHES Rear Front Top 36 clearance for serviceability recommended Single Wall Vent SW to be used only as a connector Refer to the venting tables outlined in the Installat
25. a fire or explosion may result causing property damage personal injury or loss of life A This appliance does not have a pilot It is equipped with an ignition device which automatically lights the burners Do not try to light the burners by hand B BEFORE OPERATING smell 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 WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance not touch any electric switch do not use any telephone in your building e Immediately call your supplier from a neighbor s phone Follow the gas suppliers instructions f you cannot reach your gas supplier call the fire department C Use only your hand to move the gas control switch or knob Never use tools If the gas control switch or knob will not operate don t try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part has been under water Immediately 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 OPERATING INSTRUCTIONS 1 STOP Read the safety information above on this label 2 Set the thermostat to lowest setting 3 Turn off all electric power to the appl iance 4 This appliance is equipped with an automatic ignit
26. 5 80 ul ue Diu 5 15 JO OW Jou Bulssiw H inq 01 Joud 440 Jamod uin 511815 4019 1 9189 1010 Buroeuuoosip Jaye 6 NO3 ejep ul ue W49 1894 10 1 1000 10 545 79500 10 OBA W40 54815 ejep 10 SI Suonoeuuoo pue 01 Joud 440 uin 9 2 pue 3A391109 a qissod s uonduos q 40 0 19MO g 1019 115 Aly WO 20 ADVd 500 3 NOU GANNILNOD LHVHO 51 47 SERVICING Replacing ECM Control Module Use the following steps to replace the control module for the GE variable speed indoor blower motor 1 You must have the correct replacement module The controls are factory programmed for specific operating modes Even though they look alike different modules
27. 5 10 3 5 10 3 5 10 3 5 10 Orifice Size Natural Propane 43 55 43 55 43 55 43 55 Number of Burners 2 3 4 5 Filter Size in Permanent Disposable Vent Connector Diameter inches Shipping Weight Ibs Off Heating This fan delay timing is adjustable 90 120 or 150 seconds 150 seconds as shipped Minimum Circuit Ampacity 1 25 x Circulator Blower Amps ID Blower amps 3 Maximum Overcurrent Protection refers to maximum recommended fuse circuit breaker size NOTES 1 All furnaces are manufactured for use on 115 VAC 60 Hz single phase electrical supply 2 Gas Service Connection 1 2 FPT 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Electrical Code and or all existing local codes 17 SPECIFICATIONS GDT A MODEL GDT045 3A GDTO070 3A GDTO090 4A GDT115 5A Btuh Input US Natural Gas 45 000 Output US Natural Gas 36 000 Btuh Input US LP Gas Output US LP Gas A F U E Rated External Static w c Temperature Rise F 70 000 56 000 100 000 72 000 115 000 100 000 100 000 80 000 80 Blower Wheel D x W 10 6 10 6 10X8 10X10 Blower Horsepower 1 3 1 3 1 2 1 2 3 3 3 3 Blower Speeds Max CFM 0 5 E S P Power Supply 115 60 1 Minimum Circuit Ampacity MCA 5 2 Maximum Overcurrent Device Transformer VA Primary Limit Setting F Auxiliary Limit Setting F Rollout Limit Setti
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29. 5A GDT115 5B AIR FLOW DIRECTION M Multi Position D Dedicated Downflow P 80 Single Stage S 92 Single Stage T 80 Tubular Heat Exchanger P 80 Non Tubular Heat Exchanger D Downflow Position M Multi Position Upflow Horizontal 045 45 000 050 50 000 060 60 000 070 70 000 075 75 000 090 90 000 100 100 000 115 115 000 125 125 000 140 140 000 KBTUH GMP050 3 GMP 125 5 GMT045 3 GMP050 32 GMP 125 52 GMT045 34 GMP050 32C GMP125 52C GMT045 3A GMP075 3 GMP 150 5 GMT045 3B GMP075 32 GMP150 52 GMT070 3 GMP075 32C GMP150 52C GMT070 3A GMP075 4 GMT070 3B GMP 100 3 GMT070 4 GMP 100 4 GMT070 4A GMP 100 42 GMT070 4B GMP100 42C GMT090 3 GMP 100 5 GMT090 3A GMP 125 4 GMT090 3B GMT090 4 5 2 000 GMT090 4A GMT090 4B GMT090 5 GMT090 5A GMT090 5B GMT115 5 GMT115 5A GMT115 5A 115 5 GMT135 5 GMT140 5 GMT140 5A GMT140 5B GMT140 5D Engineering Revision MAXIMUM CFM 0 5 ESP 3 1 200 4 1 600 GPD050 3 GPD100 4 GPD125 4 GSMO060 3 GSM080 4 GSM100 4 GSMS060 3 GSMS080 4 GSMS100 4 PRODUCT IDENTIFICATION NOMENCLATURE BRAND G Goodman Gas Furnace AIR FLOW DIRECTION M Multi Position D Dedicated Downflow Engineering Revision MAXIMUM CFM 0 5 ESP DESCRIPTION 3 1 200 T 80 Tubular Heat Exchanger 4 1 600 P 80 Non Tubular Heat Exchanger 5 2 000 BLOWER TYPE V Variable Speed Single Stage 045 45 000
30. FLAME SENSE FLAME SENSOR 8 BLINKS IGNITER UNIT GROUND IGNITER UNIT GROUND 9 BLINKS HIGH FIRE VENTER PRESSURE SWITCH PRESSURE SWITCH FAILURE TO CLOSE VENT BLOCKAGE CONTINUOUS BLINKS FALSE FLAME SENSED STICKING GAS VALVE ADVERTISSEMENT DECONNECTER DU CIRCUIT D ALIMENTATION ELECTRIQUE AVANT L ENTRETIEN INSPECTER LES FILTRES CHAQUE MOIS ET REMPLACER SI NECESSAIRE TOUS LES FILTRES A AIR DOIVENT ETRE APPROUVES PAR LES ULC OU LEUR EQUIVALENT ON RECOMMANDE D UTILISER DES FILTRES AIR PERMANTS UTILISER LE TABLEAU SUIVANT POUR REMPLACER LES FILTRES CHASSIS BOTTOM SIDE AIR SIZE APPLICATION INSTALLATION DIMENSIONS INSTALL INSTALL _ DISCONNECT THE ELECTRIC DU BATI SUR DESSOUS SURLE C T POWER BEFORE SEVICING INSPECT FILTERS MONTHLY AND REPLACE WHEN NECESSARY ALL AIR FILTERS MUST BE CERTIFIED BY ULC OR EQUIVALENT PERMANENT AIR FILTERS ARE RECOMMENDED WHEN REPLACING AIR FILTERS USE THE FOLLOWING CHART 52 SERVICING FLASH CODES GMPE INSTALLER SERVICEMAN THE STATUS LIGHT ON THE FURNACE CONTROL MAY BE USED AS A GUIDE TO TROUBLESHOOTING THIS APPLIANCE STATUS LIGHT CODES ARE AS FOLLOWS STATUS LIGHT EQUIP PROBLEM CHECK ON NORMAL OPERATION 1 BLINK FAILURE TO DETECT FLAME SENSE GAS FLOW GAS PRESSURE GAS VALVE FLAME SENSOR 2 BLINKS CLOSED PRESSURE SWITCH PRESSURE SWITCH STUCK CLOSED 3 BLINKS
31. OL WHOJNOO 38 ISIN 9 36601 SV NOLLVINSNI JO 3218 IWYS 3 4 38 ania 38 5 3YIM IN3A3O V 1d3H L 8 SALON 3909 TOYLNOO GSTIVISNI 07314 WNINYSL G3TIVISNI 037 5 SHIM INN HOLIMS LNOTION 808 IN3A HOIN3AH3MOd HOLIMS 39 883 4 Sd HOLIMS 51 AV I3H HOOCNI H3MO 8 5 LOH YISH 33 3 8 LOH ISH JAWA SVO AD HOSN3S 3 54 HOLIMS HOOG 5 ON3931 IN3NOdWOO UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH o 6 a o 6 2 gt zi 2 HIGH VOLTAGE WARNING 1 09 41 5 H3MOd A WIRING DIAGRAMS 5 08 844 OL 5 TWNOILdO Wiring is subject to change Always refer to the wiring diagram
32. Output US Natural Gas 36 000 56 000 56 000 72 000 72 000 72 000 92 000 112 000 Btuh Input US LP Gas 60 000 60 000 80 000 80 000 100 000 120 000 Output US LP Gas 48 000 48 000 64 000 64 000 80 000 96 000 AF U E 80 80 80 80 80 80 Rated External Static w c 10 50 10 50 10 50 10 50 10 50 10 50 Temperature Rise F 20 50 35 65 35 65 35 65 35 65 Pressure Switch Trip Point wc 20 960 06 060 oo oo 05 Blower Wheel D x W 10X6 10X8 10X8 10X8 10X10 10X10 11x10 Blower Speeds 3 3 3 3 3 3 3 Power Supply Mnimum Circuit Ampacity MCA Maximum Overcurrent Device Transformer Primary Limit Setting F Auxiliary Limit Setting F Rollout Limit Setting F Fan Delay On Heating Off Heating Fan Delay On Cooling Off Cooling Fan Delay On Fan Only Gas Supply Pressure Natural Propane w c 7 11 7 11 7 11 7 11 7 11 7 11 7 11 7 11 Manifold Pressure Natural Propane w c 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 Orifice Size Natural Propane 43 55 43 55 43 55 43 55 43 55 43 55 43 55 43 55 Number of Burners 2 6 Filter Size in Permanent Disposable Vent Connector Diameter inches Shipping Weight Ibs Off Heating This fan delaytiming is adjustable 90 120 or 150 seconds 150 seconds as shipped 1 Vent and combustion air diameters may vary depending upon vent length Refer to furnace installation instructions 2
33. PRESSURE SWITCH FAILURE TO CLOSE VENTER PRESSURE SWITCH VENT BLOCKAGE MAIN LIMIT OPEN AUX LIMIT OPEN 4 BLINKS OPEN LIMIT SWITCH STICKING GAS VALVE 5 BLINKS FALSE FLAME SENSED REVERSED POLARITY INCORRECT TWINNING REVERSE POWER SUPPLY LEADS REVERSE TRANS SECONDARY LEADS RAPID CONTINUOUS DISCONNECT THE ELECTRIC POWER BEFORE SEVICING INSPECT FILTERS MONTHLY AND REPLACE WHEN NECESSARY ALL AIR FILTERS MUST BE CERTIFIED BY U L OR EQUIVALENT PERMANENT AIR FILTERS ARE RECOMMENDED WHEN REPLACING AIR FILTERS USE THE FOLLOWING CHART MODEL FILTER SIZE GMPE075 1 5 3 18 X 25 GMPE100 2 5 4 18 X 25 GMPE125 3 5 18 25 53 SERVICING FLASH CODES GMPH INSTALLER SER VICEMAN THE STATUS LIGHT ON THE FURNACE CONTROL MAY BE USED AS A GUIDE TO TROUBLESHOOTING THIS APPLIANCE STATUS LIGHT CODES ARE AS FOLLOWS STATUS LIGHT EQUIP PROBLEM ON NORMAL OPERATION CHECK 1 BLINK IGNITION FAILURE GAS FLOW GAS PRESSURE GAS VALVE FLAME SENSOR 2 BLINKS CLOSED PRESSURE SWITCH PRESSURE SWITCH STUCK CLOSED 3 BLINKS PRESSURE SWITCH FAILURE TO CLOSE VENTER PRESSURE SWITCH VENT BLOCKAGE 4 BLINKS OPEN LIMIT SWITCH MAIN LIMIT OPEN AUX LIMIT OPEN 5 BLINKS FALSE FLAME SENSED STICKING GAS VALVE RAPID CONTINUOUS INCORRECT TWINNING INCORRECT PRIMARY POLARITY REVERSE TRANSFORVER SEC
34. PRIMARY WIRES ADVERTISSEMENT DECONNECTER DU CIRCUIT D ALIMENTATION ELECTRIQUE AVANT INSPECTER LES FILTRES CHAQUE MOIS ET REMPLACER SI NECESSAIRE TOUS LES FILTRES A AIR DOIVENT ETRE APPROUVES PAR LES ULC OU LEUR EQUIVALENT ON RECOMMANDE D UTILISER DES FILTRES AIR PERMANTS UTILISER LE TABLEAU SUIVANT POUR REMPLACER LES FILTRES A AIR CHASSIS WARNING gt DIMENIONS DISCONNECT THE ELECTRIC POWER BEFORE SEVICING INSPECT FILTERS MONTHLY AND REPLACE WHEN NECESSARY ALL AIR FILTERS MUST BE CERTIFIED BY ULC OR EQUIVALENT PERMANENT AIR FILTERS ARE RECOMMENDED WHEN REPLACING AIR FILTERS USE THE FOLLOWING CHART DU BATI BOTTOM APPLICATION INSTALLE SUR DESSOUS SIDE AIR INSTALLE _ SUR LE COTE INSTALLATION 51 SERVICING FLASH CODES GMNTE INSTALLER SER VICEMAN THE STATUS LIGHT ON THE FURNACE CONTROL MAY BE USED AS A GUIDE TO TROUBLESHOOTING THIS APPLIANCE STATUS LIGHT CODES ARE AS FOLLOWS STATUS LIGHT EQUIP PROBLEM CHECK ON FAILED CONTROL BOARD REPLACE CONTROL 1 BLINK IGNITION FAILURE GAS FLOW GAS PRESSURE GAS VALVE FLAME SENSOR 2 BLINKS CLOSED LOW FIRE PRESSURE SWITCH PRESSURE SWITCH STUCK CLOSED 3 BLINKS LOW FIRE VENTER PRESSURE SWITCH PRESSURE SWITCH FAILURE TO CLOSE VENT BLOCKAGE 4 BLINKS OPEN LIMIT SWITCH MAIN ROLLOUT AUX OR STACK OVERTEMP 6 BLINKS 115 V POWER REVERSED 115 V POLARITY 7 BLINKS LOW
35. Retighten the locking screw 57 GMTH GMT WIRING DIAGRAMS PERSONAL INJURY OR DEATH UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE 6 l a o 6 gt lt lt HIGH VOLTAGE WARNING q3ads OL 38 HOLONN 3H L SQV31 83003 301 O 3 N OL NHOJNOO ATLN3NVIAH3d 38 LSNW 8 ONINHVM 4590 1 SV NOLLVINSNI 40 3215 IWYS 3H1 38 15 38IM IN3A3OVd3H SALON TVNIAH3IL Q338VIN 5 3919 SLIHM 03 anqa 8 3909 IOHLNOO G3T1VLSNI 91314 GATIVLSNI HOLIMS dWALYAAO MOVLS OS 39NYHO OTQ3W 5 LNOTION H3MOd HOLIMS 34135344 254 HOLIMS 55 194 HOLIMS LINT 1009 2880 LV3H HOOGNI H3MO18 AV T3H 30
36. a standard ohmmeter that the resis tance from each motor lead in the motor plug just re moved to the motor shell is greater than 100k ohms Measure resistance to unpainted motor end plate If any motor lead fails this test do not proceed to install the control module The motor is defective and must be replaced Installing the new control module will cause it to fail also 7 Merify thatthe replacement control module is correct for your application If so orient the new module next to the motor and carefully insert the plug removed in step 5 Be sure the plug latches It will click when properly in serted 48 8 Install the new control module back on the motor being careful to engage the locating pin into the appropriate mating motor hole Replace the two 1 4 hex head bolts Tighten the bolts snugly It is not necessary to over tighten Note Before replacing the blower motor assembly it is im portant to look at the installation to see if some application fault has caused the motor to fail Is there any evidence of water damage to the failed control Corrosion on the inside or outside of the casting If yes do moisture check 9 Re install the blower motor assembly into the furnace 10 Plug the 16 pin control plug into the motor The plug is keyed Make sure the connector is properly seated and latched 11 Plugthe 5 pin power connector into the motor even though the plug is keyed observe the proper orientation
37. all electric power to the appliance if service is to be performed 3 Remove control access panel FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance 4 Move the gas control switch or knob to OFF Do not force 5 Replace control access panel LIGHTING INSTRUCTIONS WARNING Improper installation adjustm ent alteration service or maintenance can cause injury or prop erty damage Refer to the user s information manual provided with this furnace For ass istance or additional information consult a qualified installer ser vice agency or the gas supplier This furnace must be installed in accordan ce with the manufac turers instructions and local codes In the absence of local codes follow the National Fuel Gas Code ANSI Z223 1 For indoor installation PGB amp PGJ For outdoor install ation only WARNING If not inst alled operated and maintained in accord ance with the manuf acturer s instructions this product could expose you to subst ances in fuel combus tion which can cause death or serious illn ess and which are known to the State of California to cause cancer birth defects or other reproductive harm This product contains fiberglass insulation Fiberglass insulation contains a chemical known by the State of California to cause cancer SPECIFICATIONS GMT MODEL GMT045 3 G
38. controls diagnostic light will flash 4 four times indicating an open primary limit rollout switch auxiliary switch or stack overtemp switch open Check the flash codes for the model you are working on The circuit between the ignition control and gas valve will be interrupted when the rollout switch opens up Refer to the Rollout Limit Charts on the next page for tem perature settings and part numbers LINE VOLTAGE NOW PRESENT 1 Remove the burner compartment door to gain access to the rollout switch es mounted to burner bracket The servicer should reset the ignition control by opening and closing the thermostat circuit Then look for the ignitor glow ing which indicates there is power to the ignition control Measure the voltage between each side of the rollout control and ground while the ignition control tries to power the gas valve 2 Measure the voltage between each side of the rollout con trol and ground during the ignition attempt Refer to the following figure 39 SERVICING 80 Rollout Limit B13701 45 eae GMP 050 3 GMP 075 3 GMP 075 4 GMP 100 3 GMP 100 4 COLOR IDENTIFYING GMP 100 5 TAB GMP 125 4 Checking Flame Rollout Switch GMP 125 5 GMP 150 5 80 amp 90 Furnaces 1 075 3 If no voltage is measured on either side of control it GMPE indicates ignition control or wiring to control problem GMPE 125 5 Saas b If voltage is meas
39. emery cloth be fore replacing any components DO NOT use sandpa per See note below NOTE Contaminated fuel or combustion air can create a nearly invisible coating on the flame sensor This coating works as an insulator causing a loss in the flame sense signal If this situation occurs the flame sensor must be cleaned with steel wool or emery cloth SERVICING S 15 CHECKING MAIN BURNERS The main burners are used to provide complete combustion of various fuels in a limited space and transfer this heat of the burning process to the heat exchanger Proper ignition combustion and extinction are primarily due to burner design orifice sizing gas pressure primary and secondary air vent and proper seating of burners We have used several in shot burner designs over the years and illustrated in the following illustrations Beckett Burner New Style DISCONNECT GAS AND ELECTRICAL POWER SUPPLY In checking main burners look for signs of rust oversized and undersized carry over ports restricted with foreign ma terial etc refer to previous drawing Other older main burners shown below should not need adjustment in mostinstances However burner air shutters are provided should adjustment be necessary Afterthe furnace has been in operation for at least five 5 minutes loosen the air shutter locking screws and close the shutter until yellow tipped flames appear Now slowly open the shutter until the yellow disappears
40. maintained in accord ance with the manuf acturer s instructions this product could expose you to subst ances in fuel combus tion which can cause death or serious illn ess and which are known to the State of California to cause cancer birth defects or other reproductive harm This product contains fiberglass insulation Fiberglass insulation contains a chemical known by the State of California to cause cancer LIGHTING INSTRUCTIONS 11 PRODUCT IDENTIFICATION 12 FOR YOUR SAFETY GMP GMPE GMPN READ BEFORE OPERATING d If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life A This appliance does not have a pilot It is equipped with an ignition device which automatically lights the burners Do not try to light the burners by hand B BEFORE OPERATING smell 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 WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not use any telephone in your building Immediately call your supplier from a neighbor s phone Follow the gas suppliers instructions If you cannot reach your gas supplier call the fire department C Use only your hand to move the gas control switch or knob Never use tools If the gas control switch o
41. may have completely different functionality Using the wrong control module voids all product warranties and may produce unexpected results 2 Remove all power from the unit being serviced WARNING HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH Do NOT work on the motor with power applied Wait at least 5 minutes after disconnecting power from the equip ment before opening the motor usually not necessary to remove the motor from the blower assembly However it is recommended that the whole blower assembly with the motor be removed Unplug the two cable connectors to the motor There are latches on each connector Do not pull on the wires The plugs remove easily when properly released 4 Observe the flat end of the motor control module casting and located the two standard 14 hex head bolts Re move these bolts from the motor while holding the con trol module Do not remove the two torx head screws 5 The control module is now free of the motor but still at tacked by a plug and cable Carefully rotate the control So as to gain access to the plug on the end of the cable Squeeze the release latch and gently pull the plug out of the control module Do not pull on the wires Grip the plug only 6 The control module is now completely detached from the motor Verify with
42. the proper tools parts testing instruments and the appropriate service manual REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE SERVICE MANUAL BEFORE BEGINNING REPAIRS IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS RECOGNIZE SAFETY SYMBOLS WORDS AND LABELS THIS UNIT SHOULD NOT BE CONNECTED TO OR USED IN CONJUNCTION WITH ANY DEVICES THAT ARE NOT DESIGN CERTIFIED FOR USE WITH THIS UNIT OR HAVE NOT BEEN TESTED AND APPROVED BY GOODMAN SERIOUS PROPERTY DAMAGE OR PERSONAL INJURY REDUCED UNIT PERFORMANCE AND OR HAZARDOUS CONDITIONS MAY RESULT FROM THE USE OF DEVICES THAT HAVE NOT BEEN APPROVED OR CERTIFED BY GOODMAN INSTALLATION AND REPAIR OF THIS UNIT SHOULD BE PERFORMED To PREVENT THE RISK OF PROPERTY DAMAGE PERSONAL INJURY OR DEATH ONLY BY INDIVIDUALS MEETING THE REQUIREMENTS OF AN ENTRY LEVEL DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OTHER TECHNICIAN AS SPECIFIED BY THE AIR CONDITIONING AND REFRIGERATION INSTITUTE ARI ATTEMPTING TO INSTALL OR REPAIR THIS UNIT WITHOUT FLAMMABLE LIQUIDS OF VAPORS IN THE VICINITY OF THIS APPLIANCE SUCH BACKGROUND MAY RESULT IN PRODUCT DAMAGE PERSONAL INJURY OR DEATH GOODMAN WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES YOU INSTALL OR PERFORM SERVICE ON THIS UNIT YOU ASSUME RESPONSIBILITY FOR ANY PERSONAL INJURY OR PROPERTY DAMAGE WHICH MAY RESULT MANY JURISDICTIONS REQUIRE A LICENSE TO INSTALL OR SERVICE HEATING AND AI
43. to G 8 Turn on the power 9 If the furnace blower motor starts and the condensing unit runs then the trouble is in the thermostat or wiring Repair or replace as necessary 10 After completing check and or repair of wiring and check and or replacement of thermostat reinstall blower com partment door 11 Turn on electrical power and verify proper unit operation S 3B Heating Anticipator The heating anticipator is a wire wound adjustable heater which is energized during the ON cycle to help prevent overheating of the conditioned space The anticipator is a part of the thermostat and if it should fail for any reason the thermostat must be replaced 33 SERVICING The heating anticipator setting for furnaces covered in this manual is 0 70 Amps If the anticipator current draw is unknown then an amp draw should be taken to determine the anticipator setting Use an amprobe as shown in the following drawing 10 TURNS OF THERMOSTAT WIRE From W on thermostat READS 4 AMPS CURRENT DRAW WOULD BE 4 AMPS Checking Heating Anticipator Current Amp Draw S 3C Cooling Anticipator The cooling anticipator is a small heater resistor in the thermostat During the OFF cycle it heats the bimetal el ement helping the thermostat call for the next cooling cycle This prevents the room temperature from rising too high be fore the system is restarted A properly sized anticipator should maintain room temperature with
44. yoya 8 3003 30705 39V110A 3009 HOLIMS 1 OS HOLIMS 1 SOH H3MOd YOLNSA H3MOd XO8 HOLIMS 53 259 JHl4 HOLMS 5 15 HOLMS S1 Av THH 1000 HOOQNI AV HH 1V3H H3MO 18 AV T38 NOILINS 5 LOH 5 LOH ISH SV9 AD HOSN3S 54 HOLIMS SQ H3MOd 09 9 GAWN 03349 aauinoad OL 38 AVN HOLOW SQV313HL SISSVHO H3MOd 09 9 OL 1 184 LINN date wiring 10 Wiring is subject to change Always refer to the wiring diagram the unit for the most up 75 TWINNING DIAGRAMS HIGH VOLTAGE TWINNING DIAGRAM 76 WARNING DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH
45. 009 1 G3aTIVLSNI 91315 H3MOd GATIVLSNI 01315 ADVLIOA ADVLIOA INT 1 TIVNIAH3 L 5 WIRING DIAGRAMS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH o 6 a 6 2 gt zi 2 2 o o EH a HIGH VOLTAGE WARNING NIHIM 5 H3MOd 1 09 51 FW SISSVHO 3ovNund 9 5 49154 09 L SLL OL LINA SNISNS0NO9 Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 62 WIRING DIAGRAMS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH a o tc o 6 2 9 z 0 LT o o o HIGH VOLTAGE WARNING 9682 6865 18 HOOQNI SUINN NO AINO 135399 330H9 AHOLOV4J H3MOd 83003 0 8 310 WHOJNOO A
46. 1 GMTO70 1 GMTo90 3 1 GMT 0904 1 __ 5 1 GMT 115 5 1 GMT135 5 1 GMT 145 GMTH045 3 54 k GMTH090 5 1 GMTHiib5 1 NEED GPD 0502 1 GPD075 3 1 GPD 100 4 1 1 120 5 GSM 060 3 GSM 080 4 NA GSM 100 4 GSMS 060 3 GSMS 080 3 GSMS 100 4 05 gt AUXILIARY LIMIT NTROL LIMIT CONTROL Auxiliary Limit Control Location Side location shown GMP furnace with the edge card control board is connected in series with the primary limit which connects to the inte grated ignition control Interruption of the circuit will cause a 4 flash code on the control board These symptoms are identical to a trip of the primary limit control The air circula tion blower will run continuously SERVICING GDP GDT GMP GMPE GMNT GMT GMTH and GPD furnaces using the 9 pin connector on the control board is connected in series through the rollout switches Interrup tion of the circuit will cause a 1 flash code of ignition failure If its temperature should be exceeded it will open interrupting the voltage to the gas valve causing it to close The auxiliary limit control is designed to prevent furnace operation in case of main blower failure It may also open if the power supply is interrupted while the furnace is fir in
47. 100 4 en GMPN1205 120 5 GMNT 080 4 B13701 59 PRESSURE SWITCH TRIP POINTS 05 Inches Water Column w c 0 to 8 000 ft Negative Pressure EM GMP GMPH GPD 050 3 GMPH 080 5 GMP 100 3 GMP GMPE GPD 100 4 100 5 0 40 B13701 26 GMPH 120 5 GMP GPD 125 4 GMP GMPE125 5 GMP GMPE GPD 070 3 43 SERVICING S 9 CHECKING AIR CIRCULATOR BLOWER MOTOR OR INDUCED DRAFT BLOWER MOTOR DISCONNECT ELECTRICAL POWER SUPPLY 1 Remove blower compartment door to gain access to the circulator blower motor and induced draft blower motor wire leads connected at integrated ignition control 2 Disconnect the motor wire leads from its connection point at integrated ignition control module and capacitor if ap plicable 3 Using and ohmmeter test for continuity between each of the motor leads 4 Touch one probe of the ohmmeter to the motor frame ground and the other probe in turn to each lead If the windings do not test continuous or a reading is ob tained to ground replace the motor 5 After completing check and or replacement of circulator blower motor or induced draft blower motor reinstall blower compartment door 6 electrical power and verify proper unit operation S 9A CHECKING VARIABLE SPEED AIR CIRCU LATOR BLOWER MOTOR Variable Speed furnaces incorporate the ICM or vari able speed blower motors for greater effi
48. 18 38 ania LSNW LNINWIOVIdIY 8 8 SALON 3009 IOHLNOO 15 01313 TVNIIAH3 L 348 H3MOd Q3TIVISNI 01313 TWNIAH3L FOVLIOA 30185 o 3NI1 HOLIMS SOY AV I3H INJA HOIN3AH3MOd HOLIMS 3HfISS3Hd Sd HOLIMS 51 HOLINSI 33 38 8 LOH YISH 5 LOH ISH JAVA SVO HOSN3S AWV14 54 HOLIMS HOOG Sd 943957 LNANOdWOO GMT GMTH amp GMTH A SERIES UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH gt 6 2 a o tc o 6 2 9 gt 0 lt o o HIGH VOLTAGE 1 09 51 5 H3MOd WIRING DIAGRAMS A warnine S3 HOLIOVdY9 Sa 8 9 Alddns 09 9 OL LINN SNISN3QNOO date wiring 10 Wiring is subject to change Always refer to the wiring diagram the unit for the most up 71 61 96719 53009 1901 8 O 3 N
49. 3 8 LOH YISH YOLIND 39 3 8 LOH ISH SV9 9 HOSN3S SWV14 54 HOLIMS 80 QON393 1 LNANOdWOO L ALT Lo HOIH an 5 H3MOd 1 09 61 qaads 03 1 3 JHL OL 38 AV YOLOW SQV313HL SION 4 SISSVHO 3ovNund 5 H3MOd 09 8 OL UNN SNISN3QNOO Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 58 GMNT lt A UNIT MULTIPLE POWER SOURCES MAY PRESENT FAILURE DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 6 a o tc o 6 2 9 gt tc 0 lt o o lt 5 WARNING A 922 6 MOTISA A M 03345 aaulnodu OL 38 AWW HOLOW 50 1 6 83009 1 201 2 04 WHOJNOO ATLN3NVIAH3d 38 L3NISVO ONINHVM Z 45801 VNIOIHO SV NOLLVINSNI 30 NMOHUH 3215 IWYS 3H1 38 ISN 3HIM 1N3A3O V1d3H SALON 3005 IOHINOO Q3TIV I
50. 5 secs Off Cooling 60 secs 60 secs 60 secs 60 secs 60 secs 60 secs 60 secs 60 secs Fan Delay On Fan Only 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs Gas Supply Pressure Natural Propane w c 7 11 7 11 7 11 7 11 7 11 7 11 7 11 7 11 Manifold Pressure Natural Propane w c 3 5 10 3 5 0 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 Orifice Size Natural Propane 43 55 43 55 43 55 43 55 43 55 43 55 43 55 43 55 Number of Burners Filter Size in2 Permanent Disposable Vent Connector Diameter inches Shipping Weight Ibs Off Heating This fan delaytiming is adjustable 90 120 or 150 seconds 150 seconds as shipped Vent and combustion air diameters may vary depending upon vent length Refer to furnace installation instructions Minimum Circuit Ampacity 1 25 x Circulator Blow er Amps ID Blow er amps 3 Maximum Overcurrent Protection refers to maximum recommended fuse or circuit breaker size NOTES 1 Allfurnaces are manufactured for use 115 60 Hz single phase electrical supply 2 Gas Service Connection 1 2 FPT 3 Important It is required to size fuses and wires properly and make electrical connections in accordance w ith the National Electrical Code and or all existing local codes 15 SPECIFICATIONS GMT A B 2520 B ONTO SA Btuh Input US Natural Gas 45 000 70 000 70 000 90 000 90 000 90 000 115 000 140 000
51. 8096 or blower compartment door on 9096 furnace 9 on electrical power and verify proper unit operation 5 2 CHECKING WIRING DISCONNECT ELECTRICAL POWER SUPPLY 1 Check wiring visually for signs of overheating damaged insulations and loose connections 2 Using an ohmmeter to check continuity of any suspected open wires 3 If any wires must be replaced replace with AWM 105 C 4 64 thick insulation of the same gauge or its equivalent S 3 CHECKING THERMOSTAT WIRING AND ANTICIPATOR S 3A Thermostat and Wiring DISCONNECT ELECTRICAL POWER SUPPLY 1 Remove the blower compartment door to gain access to the thermostat low voltage wires located at the furnace integrated control module terminals 2 Remove the thermostat low voltage wires at the furnace control panel terminal board 3 Jumper terminals R to W W1 and W2 on the integrated ignition control With Power On and Door Interlock Switch closed WARNING LINE VOLTAGE NOW PRESENT 4 Induced Draft Motor must run and pull in pressure switch 5 f the hot surface ignitor heats and at the end of the this ignitor warm up period the gas valve opens and the burn ers ignite the trouble is in the thermostat or wiring 6 With power off check the continuity of the thermostat and wiring Repair or replace as necessary If checking the furnace in the air conditioning mode pro ceed as follows 7 With power off Jumper terminals R to Y
52. AGE PERSONAL INJURY OR DEATH 2 6 lt a o tc o 6 2 9 gt lt o o lt 5 WARNING A 9 1 56 18 83003 30 OL WHOJNOO 38 LSNW LANIGVO 2 4 80 1 SV NOILVINSNI JO 371 3IAVS 3H L 38 LSAW 38IM LN3A3O V1d3H 1 S31ON TVWNINYAL GAYYVANN 5 o M 344 9 ania 8 3909 IOHLNOO G3TIVISNI 01315 H3MOd G3TIVISNI 39VL1OA ONIHIM HOLIMS H3AO MOVIS OS HOLIMS LNOTION SOY H3AHOJSNVHI Hl LINJA H3MOd 1 H3MOd HOLIMS 3unSSdHd Sd HOLIMS 51 LINDYIO GALVHDSLNI 831 5 LOH ISH SVO A9 HOSN3S Sd HOLIMS HOLIMS STV 51 4 gt 09 9
53. Control GMNT GMT Furnaces 6 After completing check and or replacement of primary limit control reinstall burner compartment door 7 Turnonelectrical power and verify proper unit operation To aid in identifying these controls refer to the following Primary Limit Charts for temperature setting and length speci fications 35 SERVICING 80 Primary Limit GMT GMTH Part Number B1370192 B1370193 B1370920 Open Setting F 2 20 32 Length Inches __ gt r 045 3 070 3 gt gt 11 11 11 2 Camas cuero pow gt Soo gt GMT 090 GMT 090 4 GMT 090 5 GMT 1155 1355 1 GMT 140 55 1 GMTH045 3 GMTH070 4 GMTH090 5 GMTH1155 80 Primary Limit GMP GMPE GMPH GPD Part Number B1370902 B1370903 B1370905 B1370908 B1370910 B1370911 B1370912 B1370914 B1370915 7 Open Setting F 210 240 20 22 240 Length anche s gt gt gt 1 5 GMPi3 1
54. Do not force the connector It plugs in very easily when prop erly oriented Reversing this plug will cause imme diate failure of the control module 12 Final installation check Make sure the motor is installed as follows a As far into the blower housing as possible b Belly bands not covering vent holes or on the control module c Motor connectors should oriented as to prevent the accumulation of moisture in the control d Use wire ties to create a drip loop in the motor cables 13 The installation is now complete Reapply power to the furnace and verify that the new motor control module is working properly LINE VOLTAGE NOW PRESENT S 10 CHECKING CAPACITOR The direct drive motors are of the psc permanent split ca pacitor design A run capacitor is wired across the auxiliary and a portion of the main windings The capacitors primary function is to reduce the line current while greatly improving the torque characteristics of a motor This is accomplished by using the 90 phase relationship between the capacitor current and voltage in conjunction with the motor windings so that the motor will give two phase operation when con nected to a single phase circuit The capacitor also reduces the line current to the motor by improving the power factor to the load SERVICING DISCHARGE CAPACITOR THROUGH A 20 TO 30 OHM RESISTOR BEFORE HANDLING Two quick ways to test a capacitor are aresistance anda capacitance chec
55. E Variable Speed Two Stage 070 70 000 H High Air Flow 075 75 000 090 90 000 100 100 000 115 115 000 125 125 000 140 140 000 GMPV075 1 5 GMPE075 3 GMTH045 3 GMPH050 3 GMPV075 3 GMPE075 3A GMTH045 3A GMPH075 4 GMPV100 3 GMPE100 4 GMTH045 3B GMPH080 5 GMPV100 5 GMPE100 4A GMTH070 4 GMPH120 5 GMPV125 3 GMPE125 5 7 4 GMPV125 5 GMPE125 5A GMTH070 4B GMTH090 5 GMTH090 5B GMTH1 15 5 PRODUCT IDENTIFICATION NOMENCLATURE G Goodman Gas Furnace AIR FLOW DIRECTION M Multi Position D Dedicated Downflow S 90 Condensing Furnace Engineering Revision MAXIMUM CFM 0 5 ESP 3 1 200 4 1 600 5 2 000 DESCRIPTION M Upflow Horizontal P Position N 92 6 Condensing BLOWERTYPE 040 40 000 060 60 000 080 80 000 100 100 000 120 120 000 N 90 Condensing Furnace S Single Stage Operation T Single Stage Tubular Heat Exchanger TE Two stage Variable Speed Tubular Heat Exchanger GMNT040 3 GMNT040 3B GMNT045 3B GMNT060 3 GMNT060 3B GMNT080 4 GMNT080 4B GMNT090 5A GMNT100 4 GMNT100 4B GMNT120 5 GMNT120 5B GMNT120 5D GMNTEO60 3 GMNTE080 4 GMNTE100 4 GMNTE120 5 GMPNO040 3 GMPNO060 3 GMPNO080 4 GMPN100 4 GMPN120 5 GSMS060 3 GSMS080 4 GSMS100 4 PRODUCT IDENTIFICATION Model Description 80 AFUE Downflow application single stage induced draft motor psc multi speed motor integrated control module with diagnostics hot sur
56. EAD IMPORTANT ENERGY COST AND EFFICIENCY INFORMATION AVAILABLE FROM YOUR RETAILER SPECIFICATION DATA Circulator Blower Circulator Blower Vent Filter Size Filter Size n Filter Size Minimum m Ship Wt Number DES 08 Cum Ibs wem ws 5 038 w s xs 6 6 62 035 xm 52 038 s xs s 9 6 1 9 2 s 75 s se 6 ows oxa _ exes 95 15 Vent and combustion air diameters may vary depending upon vent length Refer to furnace installation instructions 2 Minimum Circuit Ampacity 1 25 x Circulator Blower Amps ID Blower amps 3 Maximum Overcurrent Protection refers to maximum recommended fuse or circuit breaker size 4 Filter dimensions for bottom application All models require 18 x 25 filter s for side air installations Permanent air filters recommended Both sides or bottom inlet s must be used for applications over 1800 cfm GMP150 5 requires 5 diameter vent in downflow configuration NOTES 1 All furnaces are manufactured for use on 115 VAC 60 Hz single phase electrical supply 2
57. ENSIONS GMT 2 A gt 3 1 4 3 4 19 5 8 gt T B cp 5 1 16 lt gt 7 N d 3 4 8 TEM 12 3 4 GAS INLET 13 04 GAS INLET 39 gt O LOW VOLTAGE LOW VOLTAGE ELEC 1 4 ELEC lt gt P lt 10 1 4 gt GMT045 3 i GMT070 4 GMT090 3 17 1 2 16 GMT090 4 GMTO090 5 MINIMUM CLEARANCES COMBUSTIBLE MATERIALS INCHES Rear Approved for line contact in the horizontal position 36 clearance for serviceability recommended Single Wall Vent SW to be used only as a connector Refer to the venting tables outlined in the Installation Manual for additional venting requirements 24 DIMENSIONS GDT 1 3 8 gt mil 19 5 8 B 4 3 4 _LOW VOLTAGE 14 1 4 _ELEC 2 F 39 N GAS INLET GAS INLET 11 3 8 8 5 8 43 8 n 1127 8 MINIMUM CLEARANCES COMBUSTIBLE MATERIALS INCHES ee EDT 10 for Single Wall Vent SW be used only as a connector
58. IRE 18099 13 1012933 LLI lt oc 5 RED MUST USE ONE SOURCE OF POWER FOR BOTH FURNACES CANNOT BE USED WITH TWO STAGE FURNACE APPLICATIONS NOTE 1 2 Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 77
59. MTO70 3 GMTO70 4 GMTO90 3 90 5 GMTO90 5 GMT115 5 GMT135 5 Btuh Input US Natural Gas 45 000 70 000 70 000 90 000 90 000 90 000 115 000 140 000 Output US Natural Gas 36 000 56 000 56 000 72 000 72 000 72 000 92 000 108 000 Btuh Input US LP Gas Output US LP Gas AF U E Rated External Static w c 50 50 50 50 50 50 50 50 Pressure Switch Point w c Pressure Switch Trip Point w c Point w c Blower Wheel D x W 0 1 1 10 X10 10 X10 11x10 Blower Speeds 3 3 3 3 3 3 3 3 Power Supply 60 60 60 60 60 60 60 60 Minimum Circuit Ampacity MCA Maximum Overcurrent Device Primary Limit Setting F Auxiliary Limit Setting F Rollout Limit Setting F Fan Delay On Heating 30 secs 30 secs 30 secs 30 secs 30 secs 30 secs 30 secs 30 secs Off Heating 150 secs 150 secs 150 secs 150 secs 150 secs 150 secs 150 150 secs Fan Delay On Cooling 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs Off Cooling 60 secs 60 secs 60 secs 60 secs 60 secs 60 secs 60 secs 60 secs Fan Delay On Fan Only 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs Gas Supply Pressure Natural Propane w c 7 11 7 11 7 11 7 11 7 11 7 11 7 11 7 11 Manifold Pressure Natural Propane w c 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 3 5 10 Or
60. NT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 6 2 a o tc o 6 2 9 gt o tc lt lt HIGH VOLTAGE WARNING 20 829878 LW NO 435 80 3 03345 YOLOW Q3SnNn 83009 301 8 9 3 01 INHOJNOO ATLN3NVWH3d 38 LSNW 13NIBVO NINYYM i 0801 9 SV NOILVINSNI JO ONY 3215 IWYS 3H1 38 LSNW L 0 2 6 6 9 8 9 4 v 2 8 3009 1 3003 LV3H AVI3H 1000 AV 13H LN3A H3MOd HOOQNI H3LN3A H3MOd 5 HO LIMS 39055399 HOLOW HOLIMS NIVIN 1OHINOO 33 48 8 LOH SVO AWV14 HOSN3S SWV14 SNVHL HOLOVS H3MOd HOLIMS HOOQ 8 XQ V AlddNS 1 09 5 01 03 933 3M8 IH HOLIOYdY9 03349
61. ONDARY LEADS REVERSE PRIMARY WIRES ADVERTISSEMENT DECONNECTER DU CIRCUIT D ALIMENTATION ELECTRIQUE AVANT L ENTRETIEN INSPECTER LES FILTRES CHAQUE MOIS ET REMPLACER SI NECESSAIRE TOUS LES FILTRES A AIR DOIVENT ETRE APPROUVES PAR LES ULC OU LEUR EQUIVALENT ON RECOMMANDE D UTILISER DES FILTRES AIR PERMANTS UTILISER LE TABLEAU SUIVANT POUR REMPLACER LES FILTRES AIR CHASSIS N DIMENIONS DU BOTTOM APPLICATION INSTALL SUR DESSOUS SIDE AIR INSTALLATION INSTALL _ SURLE C T DISCONNECT THE ELECTRIC POWER BEFORE SEVICING INSPECT FILTERS MONTHLY AND REPLACE WHEN NECESSARY ALL AIR FILTERS MUST BE CERTIFIED BY ULC OR EQUIVALENT PERMANENT AIR FILTERS ARE RECOMMENDED WHEN REPLACING AIR FILTERS USE THE FOLLOWING CHART 54 SERVICING FLASH CODES GSU INSTALLER SERVICEMAN THE STATUS LIGHT ON THE FURNACE CONTROL MAY BE USED AS A GUIDE TO TROUBLESHOOTING THIS APPLIANCE STATUS LIGHT CODES ARE AS FOLLOWS STATUS LIGHT EQUIP PROBLEM CHECK ON NORMAL OPERATION GAS FLOW 1 BLINK IGNITION FAILURE GAS PRESSURE GAS VALVE FLAME SENSOR 2 BLINKS CLOSED PRESSURE SWITCH PRESSURE SWITCH STUCK CLOSED LOW FIRE VENTER MOTOR 3 BLINKS PRESSURE SWITCH FAILURE CLOSE PRESSURE PORT TAP STOPPED UP 4 BLINKS OPEN LIMIT SWITCH MAIN LIMIT OPEN 5 BLINKS FALSE FLAME SENSED GAS VALVE STICKING 6 BLINKS HIGH FIRE VENTER MOTOR P
62. R CONDITIONING EQUIPMENT HIGH VOLTAGE ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH IMPORTANT INFORMATION Ay cancer PELIGRO IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE PERSONAL INJURY OR LOSS OF LIFE 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 00 NOT TRY LIGHT ANY APPLIANCE Do NOT TOUCH ANY ELECTRICAL SWITCH DO NOT USE ANY CARBON MONOXIDE POISONING HAZARD IMMEDIATELY CALL YOUR GAS SUPPLIER FROM NEIGHBOR S PHONE THE GAS SUPPLIER S INSTRUCTIONS YOU CANNOT REACH YOUR GAS SUPPLIER CALL THE FIRE DEPARTMENT INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER Carbon monoxide producing devices such as an automobile space heater gas water heater etc should not be operated in enclosed areas Special Warning for Installation of Furnace or Air Handling Units in Enclosed Areas such as Garages Utility Rooms or Parking Areas SERVICE AGENCY OR THE GAS SUPPLIER such as unventilated garages utility rooms or parking areas because of the danger of carbon monoxide CO poisoning resulting from the exhaust emissions If a furnac
63. RESSURE SWITCH VERT BLOCKAGE FAILURE TO CLOSE PRESSURE PORT TAP STOPPED UP CHECK POLARITY SWAP SEC TRANSFORMER LEADS INCORRECT TWINNING SWAP L1 amp L2 LEADS CHECK FUSE amp TRANSFORMER CHECK FOR 115V at Control Board ADVERTISSEMENT DECONNECTER DU CIRCUIT D ALIMENTATION ELECTRIQUE AVANT L ENTRETIEN INSPECTER LES FILTRES CHAQUE MOIS ET REMPLACER SI NECESSAIRE TOUS LES FILTRES A AIR DOIVENT ETRE APPROUVES PAR LES ULC OU LEUR EQUIVALENT ON RECOMMANDE D UTILISER DES FILTRES AIR PERMANTS UTILISER LE TABLEAU SUIVANT POUR REMPLACER LES FILTRES AIR RAPID CONTINOUS NO LIGHT IGNITION CONTROL FAILURE CHASSIS BOTTOM SIDE AIR AN W ARNING SIZE APPLICATION INSTALLATION DIMENSIONS INSTALI INSTALL DISCONNECT THE ELECTRIC DU BATI SUR DESSOUS SUR LE COTE POWER BEFORE SEVICING INSPECT FILTERS MONTHLY AND REPLACE WHEN NECESSARY 14 25 18 25 ALL AIR FILTERS MUST mon HM CERTIFIED BY ULC OR TO 18 X25 EQUIVALENT PERMANENT AIR Bog FILTERS RECOMMENDED WHEN REPLACING AIR FILTERS 24 X 25 18 X 25 USE THE FOLLOWING CHART SERVICING S 14 CHECKING FLAME SENSOR A flame sensing device is used in conjunction with the igni tion control module to prove combustion If proof of flame is not present the control will de energize the gas valve and retry for ignition or lockout The following drawing illustrated from a bottom view th
64. Remove burner compartment door to gain access to pres sure switch es 2 Remove wires from the pressure switch es electrical terminals 3 Using a VOM check from common terminal to NC Nor mally Closed should read closed Check from Com mon to NO Normally Open should read open If switch reads as above proceed to Step 4 otherwise re place control 4 Remove the pressure control hose from the control and interconnect with an inclined manometer as shown in the following figures INDUCED DRAFT BLOWER PRESSURE SWITCH PRESSURE SWITCH HOSE lt T INCLINED MANOMETER HOSE TO INDUCED DRAFT BLOWER TAP INDUCED DRAFT BLOWER ID Blower Pressure Switch Negative Pressure Measurement 80 Furnace shown for illustration purposes INDUCED DRAFT BLOWER 21 1 PRESSURE SWITCH PRESSURE SWITCH HO OPEN TO ATMOSPHERE QOS TEE 11512 PRESSURE SW HOSE TO INDUCED DRAFT BLOWER TAP DRAFT BLOWER ID Blower Pressure Switch Negative Pressure Measurement 90 Furnace shown for illustration purposes Reconnect pressure switch electrical wires LINE VOLTAGE NOW PRESENT 4 Energize furnace for heating cycle The induced draft blower motor will begin to run The inclined manometer should read a neg
65. SE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 6 l a o 6 2 gt lt 2 2 lt 5 71000 lt BOWLS 458 8 Med 09 8 OL 39715 QNOO3S 1V3H AWLSONYSHL LINN SNISNSGNOO N N WARNING SISSVHO A Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 74 GSMS lt 5 A UNIT MULTIPLE POWER SOURCES MAY PRESENT FAILURE DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 6 a o tc o 6 2 9 gt tc lt lt o o lt 5 x WARNING A 80 8 5828 W901 8 OL WHOJNOO ATIN3NVIAH3d 38 LSNW 1 8 0 901 SV NOLLVINSNI JO 3215 IWYS 3H1 38 LSNW N3349 9 NMOH8
66. SNI TVWNINYAL G3TIVSNI 314 TWNINYAL Q338 VI 39VLETOA 30745 HOLIMS MOVLS OS HOLIMS LNOTION SOH INJA HOLN3A XO8 8INOO HOLIMS 39155399 25 Auld HO1IMS 3HfiSS3Hd 154 HOLIMS 51 1009 LV3H 19801 80 NOILND 3915 LOH HISH HOLINOI 5 LOH ISH SVO AD HOSN3S JNV Sd HOLIMS HOOG SG GN393 1 LN3NOdWOO 5 08 SHE SISSVHO 3ovNund Woud 50 8 9 5 O9 L SLL OL AINA SNISNAGNOO date wiring to Wiring is subject to change Always refer to the wiring diagram on the unit for the most up 59 GMNT WIRING DIAGRAMS PERSONAL INJURY OR DEATH UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE 6 a o 6 gt zi HIGH VOLTAGE WARNING 490 6718 MOTHA M 45 39 3 OL Q39NVHO AVW HOLOW
67. STEM Condensing Furnaces Only 1 Inspect the drain system during the normal monthly fil ter change Any blockages should be corrected to in sure proper operation of the furnace GENERAL FURNACE INSPECTION The preceding sections cover specific areas of maintenance however on a regular basis the following should be inspected 1 Return air connection s must be sealed to the furnace and terminate outside the furnace room 2 The return air plenum s must be free of holes or other openings and show no signs of distortion 3 The seal between the furnace and the base or flooring to which the furnace is mounted should show no signs of deterioration sags cracks or gaps and must provide a definite seal between the base or flooring and the fur nace 29 SERVICING 1 Million 100 Thousand 10 Thousand 1 Thousand CUBIC O FEET GAS RATE CUBIC FEET PER HOUR Size of Test Dial Size of Test Dial Seconds 1 4 1 2 1 2 Seconds 1 4 1 2 1 2 for One cu ft cu ft cu ft cu ft for One cu ft cu ft cu ft cu ft Revolution Revolution 30 SERVICING GAS HEATING SERVICE ANALYSIS GUIDE Complaint No Heat Unsatisfactory Heat POSSIBLE CAUSE DOTS IN ANALYSIS GUIDE INDICATE POSSIBLE CAUSE SYMPTOM System Will Not Start Power Failure Burner Won t Ignite Burner Ignites Locks Out Burner Shuts Off prior to T Stat being Satisfied Short Cycles Long Cycles Soot and or Fumes Too Much Heat Not Enough Heat Te
68. TES 1 Allfurnaces are manufactured for use on 115 60 Hz single phase electrical supply 2 Gas Service Connection 1 2 3 1400 7 11 3 5 10 43 55 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Code and or all existing local codes 14 7 11 3 5 10 43 55 10X8 10X8 10X10 10X10 11x10 3 3 3 3 SPECIFICATIONS GMT Btuh Input US Natural Gas 115 000 140 000 Output US Natural Gas j 92 000 108 000 Btuh Input US LP Gas j j 100 000 120 000 Output US LP Gas j j 80 000 96 000 AF U E 80 80 Rated External Static w c 50 50 50 50 50 50 50 50 Pressure Switch Pressure Switch Trip Point w c Point Pressure Switch Trip Point w c w c Blower Wheel D x W 1 1 1 10 X10 10 X10 11x10 Blower Speeds 3 3 3 3 3 3 3 3 Power Supply 60 60 60 60 60 60 60 60 Minimum Circuit Ampacity MCA Maximum Overcurrent Device Primary S F Auxiliary Limit Setting F Rollout Limit Setting F Fan Delay On Heating 30 secs 30 secs 30 secs 30 secs 30 secs 30 secs 30 secs 30 secs Off Heating 150 secs 150 secs 150 secs 150 secs 150 secs 150 secs 150 150 secs Fan Delay On Cooling 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs 5 secs
69. THA 31IHM O 389 5 anqa 8 3009 SHIM GATIVLSNI 07314 TWNINYAL 331148 H3MOd GATIVLSNI IN HOLIMS LNOTIOH 808 INJA HOLIN3A H3MOd HOLIMS 39055399 Sd HOLIMS 51 AV I3H 5 LOH YISH 5 LOH ISH SVO AD HOSN3S ANV14 54 HOLIMS HOOG GN393141N3NOdMWOO eaa 1 09 41 5 012 4 3 SISSVHO AlddAS H3MOd 09 0 81 OL LINA IYNOILdO Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 70 Lez ee6r 18 NO 139 A 5 03395 HOLON 38 M 53000 1V907 8 9 3 OL WHOJNOO ATLNINYNY Id 0 38 ISN 13NIBVO ONINHVM 2 6 5 Ls Old 33S S 0PLLIND TAGOW HOH 79901 SY NOLLVINSNI JO 32
70. TLN3NVIAH3d 38 1 ONINHVM 4580 1 SV NOILYTNSNI ANY 3215 AWVS 3841 38 1501 38IM 1 3 133 43 1 5301 MOTISA SLIHM M 5 0 0 2 9 6 ania 8 3909 9 8 2 v IOHLNOO Q3TIVISNI 1314 Q3 tHVINNQ O 30198 c GATIVLSNI 071315 INN HOLIMS dIN31H83AO MOVIS OS HOLIMS LNOTIOW SOY INJA H3MOd 3uld INJA H3MOd 1 HOIN3AH3MOd 3913 HOLIMS 3 8983 4 584 3813 HOLIMS SYNSS3Yd 184 HOLIMS S1 5 HOLOVJ H3MOd Odd 5 LOH YISH 3905 LOH ISH SVO AD HOSN3S AWV14 3 HOLIMS 5 HOLIMS LINT STV 991 LNANOdWOO 72009 09 MOT 5 H3MOd L 09 SLL gt TIV LON daw MOVIE IH ATddNS H3MOd 09 L SLL OL
71. ame roll out switch pressure switches aluminized stell heat exchanger stainless steel secondary heat exchanger and aluminized inshot burners ACCESSORIES ACCESSORIES 10014 5 01668524 850 60668524 760 8066899 950 00668524 650 20668928 67 0 90668524 8 0 90668928 27 0 706685248 9 0 c06e8sea 0 20669624 0 10668528 9 99668099 660 9310 200088 Buuds 518000 90008819 8 06 91668079 921 10008819 90008819 Buuds 5521668928 52 eoyuo 20008819 90008818 Buuds 2928218 580 eDeis z 621668628 6271 10008819 900088 81928214 Seo dI 00668928 650 00088 Buuds siebpog eiuM 90008819 59668079 59 0 40008818 Buuds 90008818 Not used in this application PRODUCT IDENTIFICATION LIGHTING INSTRUCTIONS GMT FOR YOUR SAFETY READ BEFORE OPERATING WARNING mproper installation adjustm ent alteration service or maintenance can If you do not follow these instructions exactly
72. ative pressure 5 Remove and check the two electrical wires and using the VOM check from Common to NC Normally Closed should read open Check from Common to NO Nor mally Open should read closed If not as above re place control 6 Reconnect wires to the control and place in a heating cycle NOTE See the following pages for the pressure switch trip points and usage charts 41 SERVICING PRESSURE SWITCH TRIP POINTS AND USAGE CHART Trip Point Inches Water Column w c 0 to 8 000 ft Low Fire High Fire Negative Pressure Negative Pressure GSM 080 4 PRESSURE SWITCH TRIP POINTS AND USAGE CHART Trip Point Inches Water Column w c 0 to 8 000 ft Low Fire High Fire Negative Pressure Negative Pressure PRESSURE SWITCH TRIP POINTS AND USAGE CHART Trip Point Inches Water Column w c 0 to 8 000 ft Negative Pressure _ GMT GMTH GDT 045 3 GMT GMTH GDT 070 3 070 4 13701 42 090 3 GMT GDTO90 3 12 2 090 4 090 55 uen GMTH 115 5 B13701 50 GMT 140 5 B13701 79 42 SERVICING PRESSURE SWITCH TRIP POINTS 05 Inches Water Column w c MODEL 0 to 8 000 ft Negative Pressure _ GSMS 060 3 080 4 100 4 B13701 57 0403 d B13701 4 GMPN 080 4 B13701 50 GMPN GMNT
73. ciency ECM ICM motors vary the motor RPMs to provide a set volume of air over a wide range of conditions These motors use an elec tronic control module attached to the motors end bell to control motor operation Some unique features of these motors are 1 Constant Airflow These motors will maintain constant airflow in excess of 80 static In other words as the static increases so does the motors RPM so that a con stant CFM is maintained NOTE The motor in these units will move more air under higher static conditions than a similar sized unit using a PSC motor Because this motor does not load up and re duce airflow like a PSC motor in some undersized duct installations this may cause noise or high airflow complaints 2 Ramp up Ramp down feature These motors ramp up and down at the beginning or end of a cycle to reduce air rush noise 3 High voltage is present at these motors all the time Motor operation is controlled through the low voltage motor interface board 44 ECM ICM Control Connections Control functions G Y W W1 W2 may be active at less than 1 2 control voltage i e 12 volts Relay contacts on control functions must reliably switch low currents less than 5 MA Some thermostats with triac switches and Solid State Relays may allow enough leakage current to turn on G Thermostats that steal power thru Y or other functions are not compatible The ECM control interface can be as simple as a d
74. d LoNox approved 80 AFUE Multi position Upflow Downflow Horizontal Left or Right single stage induced draft motor psc multi speed motor integrated control module with diagnostics hot surface ignition system multiple roll out switches pressure switches aluminized steel heat exchanger and inshot burners 80 AFUE Multi position Upflow Downflow Horizontal Left or Right single stage induced draft motor variable speed ECM motor integrated control module with diagnostics hot surface ignition system multiple roll out switches pressure switches aluminized steel heat exchanger aluminized inshot burners 80 AFUE Downflow application Single stage induced draft motor psc multi speed motor integrated control module with diagnostics hot surface ignition system multiple roll out switches pressure switches aluminized steel heat exchanger aluminized inshot burners LoNox gas and electric connections can be made on the left or right side PRODUCT IDENTIFICATION Model Description 90 AFUE Multi position Upflow or Horizontal single stage induced draft motor variable speed motor hot surface ignition system roll out switch pressure switch aluminized steel heat exchanger and aluminized inshot burners 92 6 AFUE Multi position Upflow Horizontal Left or Right induced draft psc multi speed motor integrated control module with diagnostics hot surface ignition system multiple roll out switches p
75. e approximate distances for the ignitor and flame sensor to the gas inshot burner This may vary on different models You will note they are in the main burner stream IGNITOR 0111 Models with Integrated Ignition FLAME SENSOR 8 1 16 Control 4 Flame Sensor Probe WARNING HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 1 Disconnect the flame sensor wire from the sensor ter minal 2 Connect micro amp meter in series with this wire and the sensor terminal See next illustration 56 3 Be sure the negative side of the meter is connected to the wire and the positive side of the meter is to sensor terminal Digital Meter 2 0 CONTROL BOARD SENSOR Ay warnine LINE VOLTAGE NOW PRESENT 4 Place the unit into a heating cycle 5 As soon as is established a micro amp reading should be evident once proof of flame micro amp read ing is established the hot surface ignitor will be de energized 6 The Integrated Ignition controls will have 1 to 4 micro amps If the micro amp reading is less 8uA micro amp DC Check for high resistance wiring connections sen sor to burner gap dirty flame sensor or poor grounding 7 Clean flame sensor with steel wool or
76. e or air handler is installed in an enclosed area such WARNING as a garage utility room or parking area and a carbon monoxide producing device is operated therein there must be adequate direct outside ventilation SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT OFF TURN OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO THE FURNACE BEFORE TURNING OFF THE ELECTRICAL SUPPLY This ventilation is necessary to avoid the danger of CO poisoning which can occur if a carbon monoxide producing device continues to operate in the enclosed area Carbon monoxide emissions can be re circulated throughout the structure if the furnace or air handler is operating in any mode CO can cause serious illness including permanent brain damage or death B10259 216 To locate an authorized servicer please consult your telephone book or the dealer from whom you purchased this product For further assistance please contact CONSUMER INFORMATION LINE GOODMAN BRAND PRODUCTS TOLL FREE 1 877 254 4729 U S only email us at customerservice goodmanmfg com fax us at 731 856 1821 Not a technical assistance line for dealers Outside the U S call 1 713 861 2500 Not a technical assistance line for dealers Your telephone company will bill you for the call PRODUCT IDENTIFICATION NOMENCLATURE G Goodman Gas Furnace DESCRIPTION GDT045 3 GDT045 3A GDT045 3B GDT070 3 GDT070 3A GDT070 3B GDT090 4 GDT090 4A GDT090 4B GDT115 5 GDT115
77. essure regulation and 100 percent safety shut off Gas valve should have 24 volts with a call for heat If you have 24 volts at the gas valve and it will not open replace No voltage at the gas valve indicates a problem somewhere else in the system Gas pressure on the inlet and outlet side of the gas valve should be checked and adjusted when needed 49 SERVICING S 12 CHECKING HOT SURFACE IGNITOR The igniter most commonly used is the B1401018S 120V silicone carbide resistive element ignitor for ignition DISCONNECT ELECTRICAL POWER SUPPLY 1 Remove burner compartment door to gain access to the ignitor Disconnect the ignitor from the Ignition Control Using an ohmmeter measure the resistance of the igni tor Ignitor cool should read between 40 to 75 ohms Reconnect ignitor LINE VOLTAGE NOW PRESENT 6 Place unit in heating cycle measure current draw of ignitor during preheat cycle Should read approximately 4 to 4 5 amps 7 Ifignitor is receiving 115 Volts and will not light replace 8 After check and or replacement of hot surface ignitor reinstall burner compartment door and verify proper unit operation B1401018S S 13 CHECKING INTEGRATED IGNITION CONTROLS The furnaces are equipped with a combination ignition mod ule and fan control This device ignites the burners upon a call for heat It also controls the venter blower and the vari ous speed selections and timings of the circulatin
78. face ignition system multiple roll out switches pressure switches aluminized tubular steel heat exchanger aluminized inshot burners 80 AFUE Multi position Upflow Horizontal Left or Right single stage induced draft motor psc multi speed motor integrated control module with diagnostics hot surface ignition system roll out switches pressure switches aluminized tubular steel heat exchanger and inshot burners 80 AFUE Multi position Upflow Horizontal Left or Right single stage multi position induced draft motor psc multi speed motor integrated control module with diagnostics hot surface ignition system multiple roll out switches pressure switches a rotating combustion blower motor that allows venting the furnace through the top panel right hand side panel and left hand side panel aluminized steel heat exchanger and inshot burners 80 AFUE Multi position Upflow Downflow Horizontal Left or Right single stage induced draft motor psc multi speed motor integrated control module with diagnostics hot surface ignition system multiple roll out switches pressure switches aluminized steel heat exchanger aluminized inshot burners LoNox 80 AFUE Multi position Upflow Downflow Horizontal Left or Right two stage gas valve multi position induced draft motor variable speed ECM motor integrated control module with diagnostics hot surface ignition system multiple roll out switches outlet air limit switch an
79. former Primary Limit Setting F Auxiliary Limit Setting F Rollout Limit Setting F Fan Delay On Heating Off Heating Fan Delay On Cooling Off Cooling Fan Delay On Fan Only Gas Supply Pressure Natural Propane w c Manifold Pressure Natural Propane w c Orifice Size Natural Propane Number of Burners Filter Size i Permanent Disposable Vent Connector Diameter inches Shipping Weight Ibs 45 000 36 000 40 000 32 000 8076 7 11 35 10 43 55 2 70 000 56 000 60 000 48 000 80 0 60 10 6 1 3 3 1165 115 60 1 5 2 15 0 7 11 3 5 10 43 55 3 70 000 56 000 60 000 48 000 80 10 50 20 50 90 000 72 000 80 000 64 000 80 10 50 35 65 90 000 72 000 80 000 64 000 80 10 50 35 65 90 000 72 000 80 000 64 000 80 10 50 35 65 115 000 92 000 100 000 80 000 80 10 50 35 65 140 000 112 000 120 000 96 000 80 10 50 40 70 68 ws 10 8 1 2 3 1518 7 11 3 5 10 43 55 7 11 3 5 10 43 55 Off Heating This fan delay timing is adjustable 90 120 150 seconds 150 seconds as shipped 1 Vent and combustion air diameters may vary depending upon vent length Refer to furnace installation instructions 2 Mnimum Orcuit 1 25 x Circulator Blower Amps ID Blower amps 3 Maximum Overcurrent Protection refers to maxirumrecommended fuse or circuit breaker size NO
80. g Ay WARNING HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 1 Remove blower compartment door to gain access to the auxiliary limit control which is located on the blower housing or on the blower deck 2 Remove the wires from the auxiliary limit control ter minals 3 Use an ohmmeter test for continuity across the two terminals refer to the following auxiliary limit control figure No reading indicates the control is open 4 Verify proper operation of blower motor and static pressure of duct system Problem could be caused by adirty evaporator coil VOLT OHM METER Testing Auxiliary Limit Control S 7 CHECKING FLAME ROLLOUT CONTROL A temperature activated manual reset control is mounted to the manifold assembly as shown in the following illus tration Locations of the rollout switch may vary ROLLOUT SWITCH Flame Rollout Switch Location 80 Upflow Furnace Shown Downflow Similar The control is designed to open should a flame roll out occur An over firing condition or flame impingement on the heat shield may also cause the control to open On some models the ignition control diagnostic light will flash 1 one time indicating a trip of the rollout switch These symp toms are identical to a trip of the auxiliary limit control On other models the ignition
81. g air blower This control is located in the circulating air blower compart ment Upon a demand for heat the venter motor is ener gized After a short purge the electronic ignition device is energized The burners are ignited and after a short delay the burner flame is proven The circulating air blower is en ergized approximately 30 seconds after the burners are ignited A field selectable fan off timer will turn the circulat ing air blower off THIS CONTROL IS NOT FIELD SERVICABLE 50 NOTE Failure to earth ground the furnace reversing the neutral and hot wire connection to the line polarity or a high resistance connection in the neutral line may cause the control to lockout due to failure to sense flame TO AVOID THE RISK OF ELECTRICAL SHOCK WIRING TO THE UNIT MUST BE PROPERLY POLARIZED AND GROUNDED DISCONNECT POWER BEFORE PERFORMING SERVICE LISTED The ground wire must run from the furnace all the way back to the electrical panel Proper grounding can be confirmed by disconnecting the electrical power and measuring resis tance between the neutral white connection and the burner closestto the flame sensor Resistance should be less than 10 ohms The ignition control is a combination electronic and electro mechanical device and is not field repairable Complete unit must be replaced LINE VOLTAGE NOW PRESENT These tests must be completed within a given time frame due to the operation of the ignition contro
82. i lt Jn qose gp owe Jp seco COTAN ESE xe a 1 uo secu ooo m gt 1 a J gt 1 NN 1 Caa ex pow ome Ei I possem SERVICING 90 Primary Limit B1370910 Opensetting F 160 170 200 150 160 160 Length Re sem i oss gt _ 1205 lt gt gt t Te J s p quo _ gt gt SENCEM T ENCES J gt GSMs Osta 68851 94 lt lt gt 1 CENE FENCE
83. ifice Size Natural Propane 43 55 43 55 43 55 43 55 43 55 43 55 43 55 43 55 Number of Burners 2 3 3 4 4 4 5 6 Filter Size in2 Permanent 290 290 385 290 385 480 480 480 Vent Connector Diameter inches Off Heating This fan delay timing is adjustable 90 120 or 150 seconds 150 seconds as shipped 1 Vent and combustion air diameters may vary depending upon vent length Refer to furnace installation instructions 2 Minimum Circuit Ampacity 1 25 x Circulator Blow er Amps ID Blow er amps 3 Maximum Overcurrent Protection refers to maximum recommended fuse or circuit breaker size NOTES 1 Allfurnaces are manufactured for use 115 60 Hz single phase electrical supply 2 Gas Service Connection 1 2 FPT 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Electrical Code and or all existing local codes 13 SPECIFICATIONS GMT A B WE GAIT TS SABS SA Btuh Input US Natural Gas Output US Natural Gas Btuh Input US LP Gas Output US LP Gas AF U E Rated External Static w c Temperature Rise F Pressure Switch Trip Point w c Blower Wheel D x W Blower Horsepower Blower Speeds Max CFM 0 5 Power Supply Mnimum Circuit Ampacity MCA Maximum Overcurrent Device Trans
84. in 1 1 2 to 2 degrees range The anticipator is fixed in the subbase and is not to be re placed If the anticipator should fail for any reason the sub base must be changed S 4 CHECKING TRANSFORMER AND CON TROL CIRCUIT A step down transformer 120 volt primary to 24 volt second ary 40 VA Heating and Cooling Models supplies ample capacity of power for either operation WARNING HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 1 Remove blower compartment door to gain access to the thermostat low voltage wires located at the furnace inte grated control module 2 Remove the thermostat low voltage wires at the furnace integrated control module terminals 34 With Power On and Door Interlock Switch closed 5 Check transformer primary voltage at incoming line volt age connections fuse splices and blower door inter lock switch 6 If line voltage is available to the primary side of trans former and not at secondary side the transformer is inoperative Replace 7 After completing check and or replacement of trans former and check and or repair of control circuit rein stall blower compartment door 8 Turn on electrical power and verify proper unit opera tion 5 5 CHECKING PRIMARY LIMIT CONTROL The 80 furnaces use nonadjustable automatic reset pri
85. ion Manual for additional venting requirements 27 MAINTENANCE A WARNING HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH MAIN BURNER ADJUSTMENT 1 The main burners should not need adjustment in most instances However burner air shutters on some mod els are provided should adjustment be necessary After the furnace has been in operation for at least five 5 minutes loosen the air shutter locking screws and close the shutter until yellow tipped flames appear Slowly open the shutter until the yellow disappears Retighten the locking screw MOTOR LUBRICATION AND MAINTENANCE 1 The circulating air blower is equipped with bearings that are permanently lubricated by the motor manufacturer and require no lubrication At the time of the monthly filter inspection clean the exterior of the circulating mo tor especially around the perimeter air holes to prevent the possibility of overheating due to an accumulation of dust or dirt on the windings and motor casing Dirty fil ters will restrict the air flow over the motor windings and possibly cause an overheating condition 2 The induced draft vent motors are prelubricated by the motor manufacturer and require no attention INSPECTING CLEANING HEAT EXCHANGERS NOTE It is the obligation of the installer to advise the user to have the f
86. ion system which autom atically lights the burners Do not try to light the burners by hand 5 Remove control access panel 6 Move the gas control switch or knob GAS CONTROL KNOB 7 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go to the next step 8 Move the gas control switch or knob to ON 9 Replace control access panel 10 Turn on all electric power to the appliance 11 Set the thermostat to the desired setting 12 the appliance will not operate follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier 9 GAS CONTROL SWITCH SHOWN ON POSITION 8 TO TURN OFF GAS APPLIANCE 1 Set the thermostat to its lowest setting 2 Turn off all electric power to the appliance if service is to be performed 3 Remove control access panel FOR YOUR SAFETY 4 Move the gas control switch or knob to OFF Do not force 5 Replace control access panel cause injury or prop erty damage Refer to the user s information manual provided with this furnace For ass istance or additional information consult a qualified installer ser vice agency or the 085 supplier This furnace must be installed in accordan ce with the manufac turers instructions and local codes In the absence of local code
87. irect connection to the thermostat For example R to G will cause the fan to come at Fan Only CFM R to G to Y will cause the fan to come on at Cooling speed and to G to W will cause the fan to come on at heating speed The ECM ICM control requires a common connection from the transformer transformer common to C1 C2 on control In typical applications C1 and C2 will be tied together Checking ECM ICM Motors ECM ICM motors connect directly to the AC Line Voltage DO NOT insert contactors in series with the ECM ICM Mo tor AC Line The control is powered continuously to insure reliable start up The connector plug is polarized verify and correct connector orientation before applying power DO NOT force plug into motor and make sure power is off before inserting power connector DO NOT apply voltage to terminals 1 or 2 LINE VOLTAGE NOW PRESENT Check for line voltage on terminals 4 and 5 Verify terminal 3 is ground terminals Terminals 1 and 2 are jumpered in the harness for 120VAC operation AC Line Hot Connection AC Line Neutral Connection Gnd or 120VAC Power Connector applications only hs 1 and 2 will be connected 6 POWER CONNECTOR 1 2 HP MOTORS Motor Half Viewed from Plug End SERVICING inductor AC Line Hot Connection Ay caution AC Line Neutral Connection HIGH VOLTAGE ON CONTROL PINS WILL DESTROY MOTOR Gnd Do not apply 24 vol
88. k Refer to the next two figures for proper meter connections for the resistance and capacitance test ing of the capacitor S 10A Resistance Check VOLT OHM HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 1 Remove blower compartment door to gain access to pacitor Discharge capacitor and remove wire leads Set an ohmmeter on its highest ohm scale and connect the leads to the capacitor A digital meter with built in capacitance can be used or an analog meter shown above a Good Condition indicator swings to zero and slowly returns toward infinity b Shorted indicator swings to zero and stops there replace Open no reading replace Reverse leads Check again no reading replace d Reverse leads and recheck S 10B Capacitance Check VOLT OHM METER 4 15 AMP FUSE With power and Door Interlock Switch closed LINE VOLTAGE NOW PRESENT Using a hookup as shown above take the amperage and voltage readings and use them in the formula Capacitance MFD 2650 x Amperage Voltage 4 After completing check and or replacement of capaci tor reinstall blower compartment door 5 Turnonelectrical power and verify proper unit operation S 11 CHECKING GAS VALVE Gas valves provide control of main burner gas flow pr
89. k Flue Drawdown Pressure Open Roll Out Switch Bouncing On Pressure Switch Test Control Test Negative Pressure 31 SERVICING 32 5 1 5 2 5 5 3 5 3 5 4 5 5 5 6 5 7 5 8 5 9 S 9A S 10 S 10A S 11 5 12 5 13 5 14 5 15 SERVICING SECTION INDEX ae 33 Mauna m T 33 Thermostat and Wiring 33 34 Cooling Anticipator EE 34 Checking Transformer and Control Circuit 34 Checking Primary Limit Control X E 37 Checking Auxiliary Limit 38 Checking Flame Rollout Control KE UE 39 Checking Pressure Control 41 Checking Air Circulator Blower Motor or Induced Draft Blower Motor 44 Checking Variable Speed Air Circulator Blower 44 acie io 2 48 Resistance Check 49 Checking c M 49 50 Checking Integrated Ignition Controls 50 Checking Flame Sensor pA
90. l Refer to Se quence of Operation section of this manual The ignition control is capable of diagnosing many furnace failures to speed troubleshooting A flashing red diagnostic indicator light on the control flashes a code for any discov ered failures When the control is powered up normally the light will be solid red for normal operation This can be used to test for 115 volts and 24 volts to the control since both must be present for the light to flash If this step fails check for 115 volts to the control check the fuse and check the trans former and its associated wiring See the flash codes shown on the following pages of this manual SERVICING FLASH CODES GDT GMNT GMP GMPN GMT GMTH GMNT GSMS INSTALLER SERVICEMAN THE STATUS LIGHT ON THE FURNACE CONTROL MAY BE USED AS A GUIDE TO TROUBLESHOOTING THIS APPLIANCE STATUS LIGHT CODES ARE AS FOLLOWS STATUS LIGHT EQUIP PROBLEM CHECK ON NORMAL OPERATION 1 BLINK IGNITION FAILURE GAS FLOW GAS PRESSURE GAS VALVE FLAME SENSOR 2 BLINKS CLOSED PRESSURE SWITCH PRESSURE SWITCH STUCK CLOSED 3 BLINKS PRESSURE SWITCH FAILURE TO CLOSE VENTER PRESSURE SWITCH VENT BLOCKAGE 4 BLINKS OPEN LIMIT SWITCH MAIN LIMIT OPEN AUX LIMIT OPEN 5 BLINKS FALSE FLAME SENSED STICKING GAS VALVE RAPID CONTINUOUS INCORRECT TWINNING INCORRECT PRIMARY POLARITY REVERSE TRANSFORIVER SECONDARY LEADS REVERSE
91. mary limits B13701 87 99 and B13709 The illustra tion below shows how to test limit controls See the follow ing note BEFORE replacing the limit control NOTE The following service problems could cause the pri mary limit to open up and should be checked first 1 Low air flow Check for dirty evaporator coil dirty blower wheel blower motor not running or turning too slow high duct static pressure duct system under Sized high static air filters return air duct or return grilles undersized DISCONNECT ELECTRICAL POWER SUPPLY 1 Remove burner compartment door to gain access to the primary limit Remove low voltage wires at limit control terminals 3 With an ohmmeter test between these two terminals as shown in the following drawing Should read continu ous unless heat exchanger temperature is above limit control setting If not as above replace the control VOLT OHM METER SERVICING 4 After completing check and or replacement of primary limit control reinstall burner compartment door 5 electrical power and verify proper unit operation As shown in the following drawing limit control should read continuous unless the heat exchanger temperature is above limit control setting If not as above replace the control COLOR IDENTIFYING Meter Testing Primary Limit Control GMP GMPN Furnaces VOLT OHM METER COLOR IDENTIFYING TAB Testing Primary Limit
92. ng F Fan Delay On Heating 30 secs Off Heating 150 secs Fan Delay On Cooling 5 secs Off Cooling 60 secs Fan Delay On Fan Only 5 secs Gas Supply Pressure Natural Propane w c 7 11 Manifold Pressure Natural Propane w c 3 5 10 Orifice Size Natural Propane 43 55 Number of Burners 2 Filter Size in Permanent Disposable Vent Connector Diameter inches Shipping Weight 55 Off Heating This fan delay timing is adjustable 90 120 or 150 seconds 150 seconds as shipped 115 60 1 5 2 30 secs 150 secs 5 secs 60 secs 5 secs 7 11 3 5 10 43 55 3 115 60 1 7 8 30 secs 150 secs 5 secs 60 secs 5 secs 7 11 3 5 10 43 55 4 115 60 1 7 8 30 secs 150 secs 5 secs 60 secs 5 secs 7 11 3 5 10 43 55 5 Minimum Circuit Ampacity 1 25 x Circulator Blower Amps ID Blower amps 3 Maximum Overcurrent Protection refers to maximum recommended fuse circuit breaker size NOTES 1 All furnaces are manufactured for use on 115 VAC 60 Hz single phase electrical supply 2 Gas Service Connection 1 2 FPT 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Electrical Code and or all existing local codes 18 SPECIFICATIONS MODEL GDT045 3B GDT070 3B GDTO090 4B GDT115 5B Minimum Circuit Ampacity Btuh Input US Natural Gas Output US Natural Gas
93. ol switch or knob to ON 9 Replace control access panel 10 Turn on all electric power to the appliance 11 Set the thermostat to the desired setting 12 the appliance will not operate follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier x g GAS CONTROL SWITCH SHOWN IN ON POSITION TO TURN OFF GAS TO APPLIANCE 1 Set the thermostat to its lowest setting 2 Turn off all electric power to the appliance if service is to be performed 3 Remove control access panel FOR YOUR SAFETY Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance 4 Move the gas control switch or knob to OFF Do not force 5 Replace control access panel WARNING Improper installation adjustm ent alteration service or maintenance can cause injury or prop erty damage Refer to the user s information manual provided with this furnace For ass istance or additional information consult a qualified installer ser vice agency or the gas supplier This furnace must be installed in accordan ce with the manufac turers instructions and local codes In the absence of local codes follow the National Fuel Gas Code ANSI Z223 1 For indoor installation PGB amp PGJ For outdoor install ation only WARNING If not inst alled operated and
94. onds 150 seconds as shipped circuit breaker size 1 All furnaces are manufactured for use on 115 VAC 60 Hz single phase electrical supply NOTES 2 Gas Service Connection 1 2 FPT 1 25 x Circulator Blower Amps ID Blower amps 3 Maximum Overcurrent Protection refers to maximum recommended fuse or 3 Important It is required to size fuses and wires properly and make electrical connections in accordance with the National Electrical Code and or all existing local codes 19 SPECIFICATIONS GMTH MODEL GMTH045 3 GMTH070 3 GMTH115 5 Btuh Input US Natural Gas 45 000 70 000 115 000 Output US Natural Gas 36 000 56 000 92 000 Btuh Input US LP Gas 40 000 60 000 100 000 Output US LP Gas 32 000 48 000 80 000 A F U E 8096 80 80 Rated External Static w c Temperature Rise F Pressure Switch Trip Point w c Blower Wheel D x W Blower Horsepower Blower Speeds 0 5 E S P Minimum Circuit Ampacity MCA Maximum Overcurrent Device Transformer VA Primary Limit Setting F Auxiliary Limit Setting F Rollout Limit Setting F Fan Delay On Heating 30 secs 30 secs 30 secs Off Heating 150 secs 150 secs 150 secs Fan Delay On Cooling 5 secs 5 secs 5 secs Off Cooling 60 secs 60 secs 60 secs Fan Delay On Fan Only 5 secs 5 secs 5 secs Gas Supply Pressure Natural Propane w c 7 11 7 11 7 11 Manifold Pressure Natural Propane w c 3 5 10 3 5
95. our building Immediately call your supplier from a neighbor s phone Follow the gas suppliers instructions you cannot reach your gas supplier call the fire department C Use only your hand to move the gas control switch or knob Never use tools If the gas control switch or knob will not operate don t try to repair it call a qualified service technician _ Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part has been under water Immediately 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 OPERATING INSTRUCTIONS 1 STOP Read the safety information above on this label 2 Set the thermostat to lowest setting 3 Turn off all electric power to the iance 4 This appliance is equipped with an automatic ignition system which autom atically lights the burners Do not try to light the burners by hand 5 Remove control access panel 6 Move the gas control switch or knob to OFF GAS CONTROL SWITCH SHOWN IN ON POSITION GAS CONTROL KNOB 7 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go to the next step 8 Move the gas contr
96. r knob will not operate don t try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part has been under water Immediately 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 OPERATING INSTRUCTIONS 1 STOP Read the safety information above on this label 2 Set the thermostat to lowest setting 3 Turn off all electric power to the appl iance 4 This appliance is equipped with an automatic ignition system which autom atically lights the burners Do not try to light the burners by hand 5 Remove control access panel 6 Move the gas control switch or knob to OFF GAS CONTROL SWITCH SHOWN IN ON POSITION 7 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go to the next step 8 Move the gas control switch or knob to ON 9 Replace control access panel 10 Turn on all electric power to the appliance 11 Set the thermostat to the desired setting 12 If the appliance will not operate follow the instructions To Turn Off Gas To Appliance and call your service technician or gas supplier TO TURN OFF GAS TO APPLIANCE 1 Set the thermostat to its lowest setting 2 Turn off
97. ressure switches multi position induced draft motor tubular heat exchanger primary and aluminized inshot burners 92 6 AFUE Multi position Upflow Horizontal Left or Right two stage gas valve two stage induced draft motor variable speed blower motor integrated control module with diagnostics hot surface ignition system roll out switches pressure switches tubular heat exchanger primary and aluminized inshot burners LoNOx 92 6 AFUE Multi position Upflow Downflow Horizontal single stage induced draft motor psc multi speed motor integrated control module with diagnostics hot surface ignition system multiple roll out switches pressure switches aluminized steel heat exchanger and aluminized inshot burners 92 6 AFUE Multi position Upflow Horizontal two stage gas valve two stage induced draft motor psc multi speed motor integrated control module with diagnostics hot surface ignition system multiple roll out switches pressure switches aluminized 92 6 AFUE Multi position Upflow Horizontal Left or Right single stage application induced draft psc multi speed motor integrated control module with diagnostics hot surface ignition system multiple roll out switches pressure switches aluminized steel heat exchanger and inshot burners 92 6 AFUE Upflow Only twoOstage gas valve induced draft motor psc multi speed motor integrated control module with diagnostics hot surface ignition system fl
98. s follow the National Fuel Gas Code ANSI 2223 1 For indoor installation PGB amp PGJ For outdoor install ation only WARNING not ins talled operated and maintained in accord ance with the manuf acturer s instructions this product could expose you to subst ances in fuel combus tion which can cause death or serious illn ess and which are known to the State of California to cause cancer birth defects or other reproductive harm This product contains fiberglass insulation Fiberglass insulation contains a chemical known by the State of California to cause Cancer Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance B14933 224 PRODUCT IDENTIFICATION GMP GMPE GMPN GMNT GMTH FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly N WARNING a fire or explosion may result causing property damage personal injury or loss of life A This appliance does not have a pilot It is equipped with an ignition device which automatically lights the burners Do not try to light the burners by hand B BEFORE OPERATING smell 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 WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance not touch any electric switch do not use any telephone in y
99. st Method Remedy Test Voltage See Service Procedure Reference Blown Fuse Test Voltage Loose Connection Check Wiring Shorted or Broken Wires No Low Voltage Check Wiring Check Transformer Faulty Thermostat Check Thermostat Faulty Transformer Check Transformer Poor or High Resistance Ground Improper Heat Anticipator Setting Measure Ground Resistance Adjust Heat Anticipator Setting Improper Thermostat Location Relocate Thermostat Faulty Limit or Roll Out Switch Test Control Faulty Flame Sensor Faulty Ignition Control Test Flame Sensor Test Control Gas Valve or Gas Supply Shut Off Turn Valves to On Position Faulty Induced Draft Blower Test Blower Broken or Shorted lgnitor Dirty Flame Sensor Low uA Test Ignitor Clean Flame Sensor Flame Sensor not in Flame Low uA Test Adjust Position of Flame Sensor Faulty Gas Valve Open Auxiliary Limit Replace Gas Valve Reset Control Improper Air Flow or Distribution Check Duct Static Cycling on Limit Check Controls amp Temperature Rise Test for Delayed Ignition Test for Flashback Check Orifices Gas Pressure Check Gas Pressure Cracked Heat Exchanger Stuck Gas Valve Check Burner Flames Replace Gas Valve Furnace Undersized Replace with Proper Size Furnace Faulty Pressure Switch Test Pressure Switch Blocked or Restricted Flue Chec
100. ts to terminals Out or Out Make sure connector is fully seated Lines 1 and 2 will be connected y 120 Power Connector Make sure pins are fully seated in connector housing applications only Verify C1 and C2 are connected to transformer common Verify R is connected to transformer hot After verifying above connections motor can be tested by POWER CONNECTOR applying 24 volts to control pins Example R to G will cause 3 4 amp 1 HP MOTORS the fan to come at Fan Only CFM R to G to Y will cause Motor the fan to come on at cooling speed and R to G to W will cause the fan to come on at heating speed Viewed from Plug End If motor does not respond as noted ICM control unit is bad and should be replaced OUT 8 16 OUT ADJUST 7 15 Y1 6 14 Y Y2 COOL 5 13 EM HT W2 DELAY 4 12 24 COMMON 2 3 11 HEAT 2 10 Speed COMMON 1 1 9 Rev Valve CONTROL CONNECTOR Motor Half Viewed from connector end 45 39Vd LXAN NO LYVHO 51 pejoedxeun pue SPIOA eui 3 LON LNV LHOdIWI jeuiqeo sjonp ul pue dup uy sesseureu
101. ured on one side of the control and GMPH 050 3 B1370154 VOLT OHM METER RED RESET BUTTON not the other it indicates the control is open 075 3 If voltage is measured on both sides of the control the GMPH 080 5 wiring to gas valve or valve is a fault 3 After check and or replacement of rollout switch rein stall burner compartment door and verify proper unit op eration xe 40 SERVICING 90 Rollout Limit OpenSet ng F 300 350F 0403 GMPNOG 3 4 GMPNOB 4 6 1 4 GMPNi2 5 4 658 068 1 2 _65 100 4 GSMS 0603 GSMS 080 4 2 065115 1004 2 SERERE GMNTO040 3 4 GMNTO60 3 4 GMNT 080 4 4 GMNT 100 4 GMNT120 5 4 0603 4 GMNTEOBO GMNTE 1004 4 GMNTE120 5 5 8 CHECKING PRESSURE CONTROL The pressure control is a safety device to prevent the com bustion cycle from occurring with inadequate venting caused by a restricted or blocked vent pipe on the 80 and 90 furnaces Aywarnine HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 1
102. urnace inspected and cleaned annually To clean the heat exchanger perform the following 1 Adjust the room thermostat to its lowest setting 2 Turnoff the gas and electric supply to the furnace DISCONNECT GAS AND ELECTRICAL POWER SUPPLY Remove the access control door Disconnect the gas supply line attached to the gas valve Remove the wire connected to the gas valve Rw Remove the burner box assembly Care must be exer cised to avoid damage to any components 7 Inshot burners should not require cleaning However if they exhibit signs of corrosion they can be cleaned by brushing with a stiff wire brush 28 8 Remove the vent from the furnace venter blower 9 Remove the venter blower and collector box 10 With a stiff wire brush on a flexible handle and remove any loose scale from the heat exchanger at both the flue and burner openings 11 With a vacuum remove any loose scale dislodged and any additional debris found in the heat exchanger 12 Visually inspect the heat exchanger cells for any fail ures using a bright light If any failures are discov ered it is important to disable the furnace and no tify the end user that it remains inoperable until repairs are implemented 13 Reassemble the furnace in the reverse order Note No additional screws or wires are supplied All components must be reassembled to avoid an unsafe condition 14 Reconnect gas supply and check for leaks using a soap sol
103. ution If a flexible gas line is used examine it for cracks or weakness Replace if necessary 15 Restore electrical power LINE VOLTAGE NOW PRESENT 16 Follow the lighting instructions to place the furnace into operation AIR FILTERS DISCONNECT ELECTRICAL POWER SUPPLY 1 Prior to inspecting air filters turn off the electric supply to the appliance Instructions for replacing filters can be found in the Installation and Operating Instructions Do not operate the furnace without air filters in place 2 Inspect filters monthly Failure to change air filters regu larly can result in permanent damage to the circulating blower motor and adversely effect the furnace perfor mance MAINTENANCE IGNITION SYSTEM DISCONNECT ELECTRICAL POWER SUPPLY 1 Integrated control boards are not field servicable 2 Check for tight wire connections on the integrated con trol board 3 Turn off electrical power to furnace before tightening any electrical connections VENT AND COMBUSTION AIR INSPECTION 1 Check that the vent and vent connector are securely attached to the furnace and show no signs of deteriora tion or sagging 2 Check for leaks around the fittings or joints 3 Check for proper vent pipe clearance from combustible materials Check vent pipe for proper venting to the out side of the structure Follow all local code requirements for proper vent piping termination and required clear ances DRAIN SY
104. vNHnd E WIRING DIAGRAMS d warnine Wiring is subject to change Always refer to the wiring diagram on the unit for the most up GSM lt lt 2 60 8 9828 diN31H3AO 15 05 Nid 39NVHO O HOLIMS SOW 5 IN3A MOTI3A NMOHS H3MOd 31IHM M 8 IH HOLIMS 55 35 554 8 07 5 JHNSSHd 15 53002 1 3909 80109 2888 1001 O3 N OL WHOJNO2 HINOO HOLIMS 55 1 1834 89d 38 LSNW LANISVD ONINHVM HOLIMS ST 0 801 JINON NOLLINSI W91 SY NOILYTNSNI 39V 3 4801 3215 3AVS 3H1 38 LSNW 38IM 1 E 39V 1OA SOVAYNS LOH ISH SALON 3009 INWA SVO HOSN3S 54 T HOIIMS 80 Lo OLO x o1 NO NOI NO UNIT MULTIPLE POWER SOURCES PRESENT FAILURE DO SO MAY CAU

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