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Thermo Products GDM1-80N - page 1
THERMO PRODUCTS, LLC. POST OFFI CE BOX 2 17 NORTH JUDSON, IN 46366 PHONE: (574) 896 - 2133 MG - 505 ECN 5 320 - MA 1 30307 M ADE IN USA GAS - FIRED FURNACE DOWN FLOW & DIRECT VENT (SEA LED COMBUSTION) MODELS: GMD1 -60N and GMD1-80N INSTA LLA TION A ND SERVICE M A NUAL For ins tallati on in: 1. Manufactured Homes 2. Modular Homes/Buil dings 3. S ...
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Thermo Products GDM1-80N - page 2
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 1 I. SA FETY SECTION This page a nd the follow ing tw o pages contain various w arnings and cautions found throughout this furnace S ervice and Instal lation Manual. Please read and comply w ith the st atement s on th e cov er and t he stat ements b elow. : This ...
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Thermo Products GDM1-80N - page 3
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 2 after t urnin g off the g as supply. A final t est fo r gas leakage m ust be mad e after purging the gas l i ne . : DO NOT wet ele c tronic compone nts during the lea k test. Wetting electron ic compon ents may d amage circu itry and cause a hazard ous situ ati ...
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Thermo Products GDM1-80N - page 4
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 3 This page a nd the follow ing page c ontain reproduc tions of the various w arning and instruction l abels placed on th e Thermo P ride Gas Fu rnace. Please read and comply w ith the con tent s of t hese labels. WARNING: If you do not fol low these instructions ...
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Thermo Products GDM1-80N - page 5
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 4 ...
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Thermo Products GDM1-80N - page 6
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 5 TA BLE OF CONTENTS SECTION BEGINNING PA GE I. SAFETY SECTION 1 II. GENERAL INST RUCT IONS A ND CLEARA NCES 6 III. FURNACE SPECIFICATIONS 8 IV. INSTALLATION 10 A. ROOF JACK 10 B. ST ANDARD CHIMNEY 10 C. FURNACE L OCAT I ON 10 D. BASE INSTALLATION 12 1. Combustib ...
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Thermo Products GDM1-80N - page 7
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 6 II. GE NE RA L INSTRUCTIONS AND CLEA RA NCES NOTE: REA D THIS SECTIO N BEFORE STARTING INSTALLA TIO N 1. This furnace is eq uipped w ith or ifices for oper ation w ith natural gas. F or conver sion to pr opane gas, s ee instruc tions in G as Conv ersion S ectio ...
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Thermo Products GDM1-80N - page 8
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 7 : The area aro und t he fur nace must b e kept f ree and clear o f combust ible mat erials, especiall y papers and rags. : This fu rnace is no t to be used as a con struct ion h eater. 6. Definitions of "combustible" and "non - combusti ble" ...
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Thermo Products GDM1-80N - page 9
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 8 III. FURNA CE SPECIFICA TIONS MODEL GMD1 - 60 GMD1 - 80 HEAT I NPUT RAT E (BT UH) 60,000 80,000 HEAT I NG CAPACI T Y (BTUH) 49,000 65,000 BURNER ORIFI CE - NAT. GAS (MM) #38 2.45 BURNER ORIFI CE - PROP. GAS (DM S) #52 #5 3 GAS SUPPLY PRESSU RE (IN. W .G.) MINIM ...
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Thermo Products GDM1-80N - page 10
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 9 BLOWER DATA GMD1 - 60 MANUFACT URE R: MORRISON P RODUCTS , INC. BLOW ER MODEL: 10 - 7, DIRECT DRI V E NOMINAL MOTOR POW ER OUTPUT (HORSEPOW ER): 1/3 TYPICAL AIRFLOW @ SPECIFIED EX TERNAL STATIC PRESSURES (SCF M @. IN.W .G.): ESP (IN W .C.) 0.2 0.5 LOW SPEED: 75 ...
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Thermo Products GDM1-80N - page 11
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 10 IV. INSTA LL A TION A . ROOF JA CK The roof jack assembly and acces sories must be lis ted by a nati onally recog niz ed testing agency for the appropr iate heating fuel. The roof jack assembly must be ins talled ac cording to the v ent manufacturer’s instru ...
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Thermo Products GDM1-80N - page 12
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 11 Combustible Floor Ba se Model: 70 - B AS E Figure 1A Cott age Base Model: 01C OT - BA SE Figure 1B Coil Cabinet Model: C E111S / CE211T Figure 1C CE111S CE211T ...
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Thermo Products GDM1-80N - page 13
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 12 D. BA SE INSTA LLA TION 1. Combustibl e Floor Bas e Model: 70 - BASE Use the base bottom panel as a template to mark floor opening locations (see Fig ure 2). C ut a squar e opening i n the floor for the suppl y air connector duct. Cut the opening 1 - i nch lar ...
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Thermo Products GDM1-80N - page 14
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 13 If th e combust ion air p assageway cann ot ter minate o utside o f th e skirting or enclosure , a perma nent opening with a m i nimum of 50 squa re inche s of unobstructed infiltra tion (free are a ) for ventilation a ir must be prov ided for adequate c ombus ...
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Thermo Products GDM1-80N - page 15
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 14 CA UTION: A perma ne nt opening with a mi ni mum of 50 squa r e inches of unobstruct ed infiltra tion (free are a ) for ventilation a nd combustion ai r must be provided to the inte r i or of the structure. Addi ti ona l make - up a i r m a y need to be ...
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Thermo Products GDM1-80N - page 16
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 15 F. CLOSET INSTALLA TIO N WA RNING: HAZARD OF ASPHYXI ATION: A suc ti o n effect will occur w hen th e furnace is operating insi de the closet wi th the c loset door closed. For pr ope r operation, the fu rnace blo wer shall creat e no more than a 0 . 05 - ...
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Thermo Products GDM1-80N - page 17
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 16 4. The total free area of opening s in the floor or ceili ng reg ist ers ser ving the retur n air sys tem must be at least 350 sq uare i nches. At leas t one reg ister must be located wher e it is not likel y to be c over ed by car peting , boxes, furniture, o ...
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Thermo Products GDM1-80N - page 18
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 17 plate is s upplied w ith the furnace for adapt ing the 3 - inch round flex combustion ai r duct to the 2 -i nch x 7 - inch c ombustion air duct. Recommended material s for the combustion ai r duct ar e smooth, round, g alv aniz ed steel duct or schedule 20 PVC ...
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Thermo Products GDM1-80N - page 19
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 18 H. GA S PIPING : Because of the po tent ial of t he odo rant t o fade, a g as leak may not be detected by smell. If this f urnace is i nstalled below gr ade, cont act your gas supplier for a gas d etecto r. : With the gas piping pre ssurize d, a ll gas pi pi n ...
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Thermo Products GDM1-80N - page 20
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 19 design - certified to be r esist ant to the action of the LP g ases shoul d be used on all threaded joi nts. The burner is s etup to be piped to the g as supply throug h the left - hand si de of th e furnace. For s ervi ce purposes , it is recommended the gas ...
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Thermo Products GDM1-80N - page 21
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 20 f. Rei nstall and s ecure the junc tion box cov er w ith the ori ginal mounting s crew s. 3. Connection O f Room Thermostat W ires NOTE: Class 1 t hermost at wire must be u sed insid e the f urnace bu rner compartment. a. Insert 24 VAC wi res thr ough the pl a ...
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Thermo Products GDM1-80N - page 22
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 21 J. INITIAL STA RT UP: This furnace does not hav e a pilot. It is eq uipped w ith a hot sur face ig nit er, whi ch automaticall y l ights the burner. D o not attempt to li ght the bur ner by hand. Chec k the followi ng it ems before the initi al star t - up. 1. ...
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Thermo Products GDM1-80N - page 23
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 22 BTU at sea lev el must be reduced to a firing rate of 64,000 (80,000 x .80 = 64, 000 ) at an elevation of 5,000 f eet. If the f urnace is i nstalled at an elevat ion of 2,000 feet or less, no reduction in input is requi red. Your g as suppli er may supply you ...
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Thermo Products GDM1-80N - page 24
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 23 This gas furnac e is equi pped w ith a fixed or ifice si zed for the manifold pr essure s hown on the rating label. The input can only be incr eased, or decr eased, by adjusting the manifold pressur e. Remove t he 1/8" threaded pipe pl ug loc ated on the ...
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Thermo Products GDM1-80N - page 25
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 24 Figure 8 M. SETTIN G TEMPERA TURE RISE The GMD1 - 60N and G MD1 - 80N is desig ned and w ired at t he factory for a heati ng blow er speed that shoul d resul t in an approx imate temperat ure ris e of 70 ° F. The blower motor is w ir ed on low speed for heati ...
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Thermo Products GDM1-80N - page 26
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 25 N. FURNA CE CHECKOUT PROCE DURE Before any sy stem of gas pi ping i s finally put int o serv ice, i t shal l be carefull y tested to assure that it is g as tig ht as indic ated in secti on IV. H. Gas Piping of this manual. NOTICE: All contr ols on the uni t sh ...
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Thermo Products GDM1-80N - page 27
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 26 V. INSTALLER'S INSTRUCTIO NS TO USER: After comp leting the installation, the installer shall i nform and/or demonstrate t o the homeowner: 1. The location of all t he instruc tions in t he furnace must be kept along w ith instruc tions for any access ori ...
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Thermo Products GDM1-80N - page 28
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 27 VI. STARTING THE UNIT FL AM E M UST BE DETECTED W ITHI N 4 SECO N DS I F F L AME IS DE TECTED, THE DELA Y- TO- F AN- O N TI ME BEGI NS (4 5 SECO ND S) IF F LAM E I S N OT DETEC TED, TH E G AS V ALVE IS DE - ENER GI Z ED, TH E IG NI TOR I S TURN ED OF F AND THE ...
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Thermo Products GDM1-80N - page 29
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 28 AFTE R D ELAY-T O -FAN --ON PERIO D E NDS, C IR CULAT ING AIR FAN IS ENE RGI ZED AT HE AT IN G SPEED . TH E (OPT I O N AL) ELEC T RO N IC AIR CLEAN ER AND HU MIDIFIER AR E EN ERG IZED. I F IG N ITI ON ATTE MPT I S UN SUC C ESSFU L, ON E MORE RET RY W I LL BE M ...
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Thermo Products GDM1-80N - page 30
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 29 VII. TROUBLESHOOT ING THIS SECT I ON IS ONLY TO BE P ERFORMED BY TRAINED, QUA LIFIED SERVI CE PERSONNE L, A ND NOT BY THE FURNA CE OWNER. NOTICE: BEFORE TROUBLESHOOTING, FAMILIARIZE YOU RSELF W IT H T HE STA RT UP AND CHE CK OUT P RO CEDURE. ALL INSTALLAT ION ...
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Thermo Products GDM1-80N - page 31
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 30 DIA GNOSTIC FEATURES : P ower must b e disconn ected bef ore servici ng . The 50A65 - 143 control c ontinuously monitor s its ow n operat ion and the operati on of the sys tem. If a failure occur s, the LED w il l indic ate a failure code as show n below . If ...
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Thermo Products GDM1-80N - page 32
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 31 TURN THERMOSTAT TO CALL F OR HEAT DOES THERMOSTAT MAKE CONTAC T? REPLACE TRANSFORMER CHECK INPUT POW ER, SERVICE SW ITCH AND FUSES IS INTERNAL DAMAGE PRESENT ON THE TRANSFORMER? ARE W IRES CONNEC TED PROPERLY? CORRECT W IRE CONNECTIONS COOL THE THERMOSTAT IS R ...
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Thermo Products GDM1-80N - page 33
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 32 CHE CK THE I NTEG RATE D CONT ROL DI AG N O STI C LED LA MP. RESET BY I NTER RUPT I NG POW E R TO CON T ROL F OR MOR E THA N O NE SECO ND. IF LED ST AY S ON CO NT I N UO USL Y , REPL A CE I NTEG RATED C O NTRO L . CHE CK WIRI NG TO I NDUC ER AND I F O K, REPLA ...
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Thermo Products GDM1-80N - page 34
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 33 AFTER G AS VALVE OPEN S, DO TH E BURN ERS IGNIT E? MEASURE MANIFOLD PRESSUR E. IS PRESSUR E AD E QUAT E? ADJUST T O 3.5" W C FOR NAT URAL G AS O R 10. 0" W C FOR PRO PANE GAS CHECK IG NITOR VOLTAGE D UR ING 20 SECON D W ARM-UP, IT SHOULD BE AT LEAST ...
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Thermo Products GDM1-80N - page 35
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 34 TRO UBL ESHO OTI NG COM PL ETE. CH ECK AL L W I RIN G F OR LOO SE CONNEC TIO NS IS L ED L I GHT ON I NTEGR ATED CONTRO L F L ASH I NG? DO ES SYSTEM RUN U NTI L THER MO STAT IS S ATISFI ED ? DO ES BURN ER SH U T OF F W HE N THERM OS TAT IS SATISF IED ? CHE CK F ...
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Thermo Products GDM1-80N - page 36
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 35 VIII. DE A LER MA INTENA NCE A qualified heating c ontractor should pe rform the follow ing mai ntenan ce procedu res at th e beginn ing of each heat ing season . Corr ect any deficiencies at once. WA RNING: Pe rsonal inj ury or property da mage coul d r e ...
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Thermo Products GDM1-80N - page 37
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 36 Figure 9 C. INDUCER BLOW ER A SSEMBLY Inspect the pr essure sw it ch and tubing connections and inspect the bl ower /assembly for war page, deter iorati on and carbon or other build - up. If necessary , clean t he accessi ble porti ons of the housing and bl ow ...
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Thermo Products GDM1-80N - page 38
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 37 Vent pipes shoul d also be ins pected for any s igns of corrosi on, deterior ation, or l eakage that may caus e combustion by - produc ts to infiltr ate the home or indoor envi ronment. If signs of corrosi on, deteri oration, or leakag e are ev ident, the v en ...
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Thermo Products GDM1-80N - page 39
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 38 IX. USER INFORM A TION SEC TION A . WA RNINGS A ND CA UTIONS: : If you suspec t there is a problem with the furna ce, perta ining to the venting system or an y oth er related p roblem , immediat ely cont act a quali fied service agency. If a service agency i s ...
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Thermo Products GDM1-80N - page 40
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 39 B. COMPONE NT L O CA TIONS The followi ng diag ram show s a ty pical furnace instal lation and ty pical positi on of the components referenced i n these inst ructions . Figure 10 C. INSPE CTION A REA S IMPORTA NT: For safe ope ration it is the r e sponsibili t ...
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Thermo Products GDM1-80N - page 41
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 40 1. VESTIBULE: The furnace v estibule ar eas or bur ner compartment s hould be inspected by remov ing front door of the furnace and looki ng for sig ns of exces siv e heat such as di scolor ation of components, materi als damaged from rust or cor rosi on, soot ...
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Thermo Products GDM1-80N - page 42
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 41 A PPEND IX A – REPLA CEMENT PA RTS ...
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Thermo Products GDM1-80N - page 43
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 42 ...
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Thermo Products GDM1-80N - page 44
A ll installation s and services mu st be perfo rmed by qualified serv ice personn el. 43 A PPEND IX B – WIRING DIA GR AM ...
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