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Thermo Products MG-1018 - page 1
MG-1018 ECN4547- MA ECM OPERATION MANUAL FOR U SE WITH MODELS: CHX1-75N CDX1-75N CHX1-100N CDX1-100N CHX1-125N CDX1-125N : IF YOU DO NOT FOLLO W THE SAFET Y PRECAUTIONS BEL OW AN D IN THIS MANUAL , A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSON AL IN JURY, OR LOSS OF LIFE. DO NOT STORE OR USE GASOLINE OR OT HER FLAMMABLE VAPORS AND ...
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Thermo Products MG-1018 - page 2
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. i INDEX SECTION B E G I N N I N G P A G E I. FURNAC E SPECIFICTIONS (SHIPP ED SETT INGS) 1 II. BLOWER INFORMA TION 3 A . W I R I N G 3 B . C F M T A B L E S 4 III. ECM T ROUBLESHOOTING 6 A. GENERA L GUIDEL INES TO T ROUBLESHOOTING GE ECM 6 B. TROUBLESHOOT ING CHAR ...
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Thermo Products MG-1018 - page 3
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. 1 I. FURNACE SPECIFICATIONS ( SH IPPED SETTINGS) CHX1 SERIES MODEL NO. CHX1-75 CHX1-100 CHX1-125 HEAT INPUT RATE IN BTU/HR (High fire/ Low fire) 75,000 / 52,000 100,000 / 70,000 125,000 / 87,500 HEATING CAPACITY IN BTU/HR (High fire/ Low fire) 70,875 / 49,612 94,5 ...
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Thermo Products MG-1018 - page 4
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. 2 CDX1 SERIES MODEL NO. CDX1-75 CDX1-100 CDX1-125 HEATING INPUT RATE IN B TU/H R (High fire / Low fire) 75,000 / 56,250 100,000 / 75,000 125,000 / 93,750 HEATING CAPACITY IN BTU/HR (High fire / Low fire) 69,750 / 52,312 93,000 / 69,750 116,250 / 87,187 HEIG HT OF ...
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Thermo Products MG-1018 - page 5
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. 3 II. BLOWER INFORM ATION A. WIRING Figure 1: BLOWE R WIRING : TURN O FF T HE ELECTRICAL P OWER to the f urnace b efore a ttem p ting to d isconnect b lower wiring. ...
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Thermo Products MG-1018 - page 6
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. 4 B. CF M TA B LES The follow ing tables contain blow er speed s ettings an d their respective air f low rates for th e ECM blow er m otor. To change air f low rates f rom th at of the sh ipped setting s, use th e respective S3 and S4 dips witch es on th e furn ac ...
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Thermo Products MG-1018 - page 7
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. 5 Dip switch setting Continu ous fan CFM Cooli ng CF M Dip switch setting Contin uous fan CFM Coolin g CF M Dip switc h setting Cont inuo us fan CFM Cooli ng CFM 1-OF F 2-OF F 3-ON 4-OF F 500 1150 1-OFF 2-OFF 3-ON 4-OFF 600 1380 1-OF F 2-OF F 3-ON 4-OF F 700 1610 ...
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Thermo Products MG-1018 - page 8
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. 6 III. ECM TROUBLE SHOOTING A. GENERAL GUIDE LINES TO TROUBLES HOOTING GE ECM – DRIVEN SYS TEMS : Disconnect power from unit before rem oving or replacing connectors , or servicing m otor. Wait at least 5 m inutes after disconnecting power before opening m otor. ...
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Thermo Products MG-1018 - page 9
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. 7 • “Hunts” o r “puffs” a t high CFM (sp eed ) • Does removing panel o r filter r e d uce “puffing”? ! Reduce restrict ion ! Reduce m ax airflow Evidence of Moisture • Motor failure o r malfunction has occurred and moisture is present • Replace ...
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Thermo Products MG-1018 - page 10
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. 8 Figure 2: ECM PIN CONNECTORS Troubleshoot ing t able above an d Fig ure 2 adapted f rom GE In dust rial Sy st ems publicat ion GED- 7161C, “Troub lesho oting GE ECM – Driven Systems”. ...
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Thermo Products MG-1018 - page 11
All installatio ns a nd services must be perform ed by qualified serv ice perso nnel. 9 B. TROUBLE SHOOTING CHARTS CONFIRM IF EITHER BLOWER W HEEL IS RUBBING AGAINST HOUSING O R M OTOR SHA FT IS SPINNING FREELY, REPAIR OR REPLACE AS NEC ESSARY. DOES BLOW ER SPIN FREELY? IS THERE 115V SUPPLIED TO MOTOR? CHECK 115V SUPPLY, CONNECT ION FUSES, SERVICE ...
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