Thermo Products CMA3-50D36N manual

GAS FIRED HIGH EFFI CI ENCY FU RNACE DOWNFLOW & DIRECT VENT (SE ALED COMBUSTION) MODELS: CM A 3- 50 D36 N, C M A3 - 75D36N, CM C1 - 50D36N, CM C1 - 75D36N, CM C1 - 50DV3N, CM C1 - 75DV3N INST ALLATION AND SERVICE MA NUAL For ins tallation i n: 1. Manu factured H omes 2. Modul ar Homes/ Buildi ngs 3. Sit e Construct ed — Resident ia l (Single [...]

T ABLE OF C ONTE N TS SECTION BEGINNI NG PAGE I. SAFETY INFORMATION 1 II. FURNACE SPECI FICAT I ONS 7 III. G ENERAL I NSTRUCTIO NS AND CL EARA NCE S 11 IV. GENERAL INSTALLATION 13 A. FURNACE LOCATI ON 13 B. BASE INSTALLATION 1 5 C. ALCOVE INSTALLATIO N 1 6 D. CL OSE T INSTA LLAT ION 14 E. FUEL PIPING 1 9 F. GENERAL VENTING REQUIREMENTS 20 G. CONNEC[...]

All installatio ns and services must be performed by qualified service personnel. I. SA FETY INFORMATION This and the follow ing pag e contain r eproduct ions of th e vari ous warning and instruc tion labels pl aced on the Ther mo Pride C ondensi ng Gas Furn aces. Plea se read an d comply wi th the contents of these l abels. 1[...]

All installatio ns and services must be performed by qualified service personnel. This and the prev ious page c ontain r eproduct ions of th e various safety and i nstruct ion labels plac ed on the Therm o Pr ide Cond ensing Gas Furnaces. Please r ead and co mply wi th the contents of these l abels. 2[...]

All installatio ns and services must be performed by qualified service personnel. This and the prev ious page c ontain re produc tions of th e various safety and i nstruct ion labels pl aced on the Ther mo Pride Cond ensing Gas Furnaces. Pl ease read a nd co mp ly wi th the contents of these l abels. 3[...]

All installatio ns and services must be performed by qualified service personnel. The follow ing s afety inform ation sho uld be r ead, unders tood, a nd followed by the installe r. 1. Use only wit h type of gas approv ed for this furnace . Refer to furnace r ating pl ate. 2. Do no t instal l this fur nace w here it coul d be ex posed to drafts or [...]

All installatio ns and services must be performed by qualified service personnel. : The vent and air intake e lbows mu st be kept away from b ushes, shrubs or any vegetation that ma y restrict the flow of flue products. I t mus t also be kept c lear of an y leav es, weeds o r other combustibl e materi als. Keep t he vent h ood clear of snow. Avoid [...]

All installatio ns and services must be performed by qualified service personnel. : Copper and bras s tubing and fittings (e xcept tin lined) shall not be used if t he gas contai ns more than a t race (0.3 gr ains per 100 cub ic ft.) o f hydrogen sulfi de gas. Che c k with your gas supplier . : TURN OFF THE ELECTRICAL POWER to the furna c e before [...]

All installatio ns and services must be performed by qualified service personnel. II. FURNACE SPECIFI C ATIONS MOD EL CM A3 - 50D36 CM A3 - 75D36 INPUT IN BTUH 50,000 75,000 OUTPUT IN BTUH 48,000 72,000 MAIN ORIFIC E - NAT. #42 MAIN ORIFIC E - LP #54 GAS SU PPLY PRESS URE L.P. MINI MUM 11” IN.W .C. NAT. MINIM UM 4.5”IN.W .C. L.P. MAXIMUM 14” [...]

All installatio ns and services must be performed by qualified service personnel. MOD EL CMC1 - 50D36 CMC1 - 75D36 INPUT IN BTUH 50,000 75,000 OUTPUT IN BTUH 48,000 72,000 MAIN ORIFIC E - NAT. #42 MAIN ORIFIC E - LP #54 GAS SU PPLY PRESS URE L.P. MINI MUM 11” IN.W .C. NAT. MINIM UM 4.5”IN.W .C. L.P. MAXIMUM 14” IN.W .C. NAT. MAX IMUM 14” IN[...]

All installatio ns and services must be performed by qualified service personnel. MOD EL CMC1 - 50DV3 CMC1 - 75DV3 INPUT IN BTUH 50,000 75,000 OUTPUT IN BTUH 48,000 72,000 MAIN ORIFIC E - NAT. #42 MAIN ORIFIC E - LP #54 GAS SU PPLY PRESS URE L.P. MINI MUM 11” IN.W .C. NAT. MINIM UM 4.5”IN.W .C. L.P. MAXIMUM 14” IN.W .C. NAT. MAX IMUM 14” IN[...]

All installatio ns and services must be performed by qualified service personnel. I NS T AL L ATI O N P AR T S P AC K AG E S PARTS PKG # DESCRIPTION CMA3 - 50D 36N CMA3 - 75D 36N S00S4248 S00S4249 PART # QTY PART # QTY J- box c over 350020 1 350020 1 W ire nut 300132 2 300132 2 3" st ainless steel hose clamp 300276 4 300276 4 2- 3/8" rad [...]

All installatio ns and services must be performed by qualified service personnel. III. GENERA L INSTRUCTIONS AND CLE ARANCES – READ BEFORE S TART OF INSTAL L A TION 1. The B TU output c apacit y of the furnace pr oposed for install ation shoul d be bas ed on a heat loss cal culation made accor ding to t he manuals prov ided by the Ai r Conditioni[...]

All installatio ns and services must be performed by qualified service personnel. d. Ameri can Natio nal Sta ndard (AN SI - C1/NFPA - 70 Electric C ode for all electrica l field wiring. e. Thes e gas - fired uni ts h av e been investig ated under standar ds AN SI Z 21.47 CAN/CGA Z2 23 - 2001 Central Fur nace test standards . f. Th ese gas - fired u[...]

All installatio ns and services must be performed by qualified service personnel. IV. GENERA L INSTALLAT ION A. F UR N ACE L O C AT I O N 1. For best per formance, locate t he furnace so that i t is centr alized with r espect to the duct sy stem. 2. The furnace i nstallati on is only intended for free ai r retur n through t he furnace door lo uvers[...]

All installatio ns and services must be performed by qualified service personnel. Coil Cabinet Model: CE113 S / C E213T Note: Co il cabi net cannot be utiliz ed as a cott age base. CE113S CE213T Figure 1B. Cott age Base Model : 01COT - BAS E For CMA3 models onl y. NOTE: Ser ves as a pl enum for single stor y applic ations w ith exposed s upply ai r[...]

All installatio ns and services must be performed by qualified service personnel. B. BA SE INSTALLATION – CMA 3 model s only 1. Comb ustible F loor Base M odel: 70 BASE (for CMA 3 models only) Use the base botto m panel as a templat e to mar k floor op ening loc ations (s ee Fig ure 2). Cut a sq uare openi ng in the floor f or the sup ply air c o[...]

All installatio ns and services must be performed by qualified service personnel. connector duct. R emov e the bottom panel. C ut an opening in the distri bution duct slightly larg er than the c onnector d uct. (re fer to Fig ure 2 for location of this cut .) Cut the c onnector duct to l ength. I nstall t he connector duct. Ben d over each tab. Ins[...]

All installatio ns and services must be performed by qualified service personnel. C. AL COVE INSTALLA TION In this applicati on, a mi nimum o f 18 inches o f clearanc e must be pro vided to t he front o f the unit. See Fig ure 4. Note – acces s to diag nostic view port. CMA3 SER IES CMC1 SE RIES Figure 4. D. CLOSET INSTA LLA TION 1. The r eturn a[...]

All installatio ns and services must be performed by qualified service personnel. CMA3 SER IES CMC1 SE RIES Figure 5. : Do not obstruct any re turn a ir openings, including the return grille on the furnace . To do so ma y cause the furnace to activate the high limit and shut down. 3. The cross - s ectional area of t he return sy stem leadi ng into [...]

All installatio ns and services must be performed by qualified service personnel. E. FUEL PI PING Siz ing and installati on o f fuel lines must be in accor dance wi th Federal, St ate & Local reg ulations . Incl uding the N ational F uel Gas C ode NFPA 54/ANSI - Z2 33.1 (Latest Edi ti o n) . NOTE : These furnaces are desig ned to be g as piped [...]

All installatio ns and services must be performed by qualified service personnel. occurs. Wait at leas t 24 hours for the circuit to fully dry before energizi ng the system . : The fu rnace and it s gas va lve must b e disconn ected fr om the gas supply during press ure testing of the gas su pply s ystem at pressures in exces s of 1/2 PS IG or 14 i[...]

All installatio ns and services must be performed by qualified service personnel. MA XIMUM VENT LENGTH VENT SIZE 2 IN. PVC FURNACE MODEL VENT LENGTH (FT.) EXHAUST VENT ELBO W S (NO.) COMBUST ION AIR INTAKE ELBO W S (NO.) CMA * /CMC * 30 8* 7** *Note t he drain el bow suppli ed wi th furnace c ount as 1 elbow. **Note t he two 45 ° el bows supplied [...]

All installatio ns and services must be performed by qualified service personnel. G. CONNECTI NG THE EXH AUST VENT AND COMBUSTION A IR INT AKE Figur e 6. shows the typi cal exhaust v ent and combustio n air int ake conn ection for CMA /CMC furnace . Figure 6. Models C MA and CMC have a re movable top front p anel that will allow for improv ed acces[...]

All installatio ns and services must be performed by qualified service personnel. the concl usion o f the vent pipe inst allation. This w ill insure a l eak fr ee return air compartm ent. Re fer to Fi gure 6A. Figure 6 A . NOTICE: The exhaust vent pipe must be su pported every 4 feet. Aft er making sure th e length o f the pi ping is cor rect gl ue[...]

All installatio ns and services must be performed by qualified service personnel. gas flame. Shoul d acid compounds form in your furnace, it may reduce the life of th e furnace. H. Direct Venting Through a Sidew all 1. Vent And Combustion Air Pipes Vent an d combusti on air pipes may pas s thro ugh a maxi mum wall thickness of 18 inc hes. The minim[...]

All installatio ns and services must be performed by qualified service personnel. b. The bo ttom edg e of the v ent termin ation el bow must be install ed at least 1 2 - inches ab ove the outl et of i ntake ter mination el bow. c. The hor izontal di stance bet ween the i nlet and exhaus t ter minations should be mi nimiz ed, when possible, a nd sho[...]

All installatio ns and services must be performed by qualified service personnel. • wher e wetting of components by condens ate, or water v apor, could be detri mental to t he oper ation of pr essure r egulator s, relie f valves , or any other equi pment. d. The v ent termi nal shall be instal led a mini mum of 14 - i nc hes from any obstructi o [...]

All installatio ns and services must be performed by qualified service personnel. 4. Vent Termina l Location Guide lines : Bushes, shr ubs, or any vegetation that may r estrict t he flow of flue pr oducts must be kept away fro m vent and air intake t ermin ations. Terminat ions mu st also be k ept clear o f any le aves, weeds , comb ustible materia[...]

All installatio ns and services must be performed by qualified service personnel. Figure 10: Typical Construction De tails of Sidewall Vent and A ir Inta k e Terminations 3. Finis h the v ent instal lation by caulking the annulus t o seal ar ound th e two (2) holes w here the t hermoplas tic pipes pass thr ough th e wall. 4. To pr event for eign ma[...]

All installatio ns and services must be performed by qualified service personnel. The fur nace may be vented v ertical ly throug h the roo f. The outle t/inlet o f the vent and air intake ter minations shall be a minimu m of 12 inc hes abov e highes t anticipa ted snow level. T he vent outl et must be instal led a mini mum of 12 i n . above th e ai[...]

All installatio ns and services must be performed by qualified service personnel. CEILING: Frame o ut area aro und where PVC pipe i s to pen etrate ce iling . Cut a 2- 3/8” di ameter hol e for 2” PVC in the c eiling and a corres ponding hole in a firest op to be mad e of a mini mum o f 18 gaug e galvani zed metal lar ge enough to cover the enti[...]

All installatio ns and services must be performed by qualified service personnel. L. ELECTRI C AL WIRING All w iring shal l be perfor med by a qual ified el ectrici an or serv ice pers on. The wiri ng must compl y wi th local codes, the instr uctions i n this manual, and in the absence o f codes w ith the Na ti onal E lec tr i cal C ode AN SI/N F P[...]

All installatio ns and services must be performed by qualified service personnel. IMPORT A NT: T he r oom ther mostat sho uld be ins talled 4 t o 5 fee t above the floor on an int erior w all whi ch is relati vely free from direc t source s of heat (s unlight or s upply airflow ) or expos ure to cold (dr afts fro m open wi ndo ws and doors ). The n[...]

All installatio ns and services must be performed by qualified service personnel. 4. BLOWER MO TO R SPEED WIRING Figure 15. BLOW ER DEL AY SET TINGS To d elay fan turn - on by : Set Switch #1 #2 1 5 sec. 30 s ec. *45 s ec. 6 0 sec, Off Of f Off On On Off On On To d elay fan turn - off by : Set Sw itch #3 #4 60 sec. 90 s ec. *120 sec. 180 sec. On On[...]

All installatio ns and services must be performed by qualified service personnel. CM A3 - 50D36 ALTERATIONS RE Q’D FOR A/C @ DESIGN EXTERN A L ST AT IC PRESSURE COOLING UNIT HT G Speed Recommended CLG Speed 24,000 L OW MED - L OW 30,000 L OW MED - HIGH 36,000 L OW HIGH Speed Tap Static Pressure Furnace A irflow (CFM) v s. External S tatic press[...]

All installatio ns and services must be performed by qualified service personnel. CM A3 - 75D36 ALTERATIONS RE Q’D FOR A/C @ DESIGN EXTERN A L ST AT IC PRESSURE COOLING UNIT HT G Speed Recommended CLG Speed 24,000 MED - L OW MED - L OW 30,000 MED - L OW MED - HIGH 36,000 MED - L OW HIGH Speed T ap Static Pressu re Furnace A irflow (CFM) v s. Ex[...]

All installatio ns and services must be performed by qualified service personnel. CM C1 - 50D36 ALTERATIONS RE Q’D FOR A/C @ DESIGN EXTERN A L ST AT IC PRESSURE COOLING UNIT HT G Speed R ecomm ended CLG Spee d 24,000 L OW MED - L OW 30,000 L OW MED - HIGH 36,000 L OW HIGH Speed Tap Static Pressure Furnace A irflow (CFM) v s. External S tatic pr[...]

All installatio ns and services must be performed by qualified service personnel. CM C1 - 75D36 ALTERATIONS RE Q’D FOR A/C @ DESIGN EXTERN A L ST AT IC PRESSURE COOLING UNIT HT G Speed Recommended CLG Speed 24,000 MED - L OW MED - L OW 30,000 MED - L OW MED - HIGH 36,000 MED - L OW HIGH Speed T ap Static Pressu re Furnace A irflow (CFM) v s. Ex[...]

All installatio ns and services must be performed by qualified service personnel. CM C1 - 50DV3 ALTERATIONS RE Q’D FOR A/C @ DESIGN EXTERN A L ST AT IC PRESSURE COOLING UNIT HT G Speed R ecomm ended CLG Spee d 24,000 L OW MED - L OW 30,000 L OW MED - HIGH 36,000 L OW HIGH Speed Tap Static Pressure Furnace A irflow (CFM) v s. External S tatic pr[...]

All installatio ns and services must be performed by qualified service personnel. CM C1 - 75DV3 ALTERATIONS RE Q’D FOR A/C @ DESIGN EXTERN A L ST AT IC PRESSURE COOLING UNIT HT G Speed Recommended CLG Speed 24,000 MED - L OW MED - L OW 30,000 MED - L OW MED - HIGH 36,000 MED - L OW HIGH Speed T ap Static Pressu re Furnace Air flow (CFM) vs. Ext[...]

All installatio ns and services must be performed by qualified service personnel. : TURN OFF THE ELECTRICAL POWER to the furna c e before attempting to c ha nge blower speed wiring. The fur nace is factory w ired to the i gnition control w ith stand ard heat ing and cooli ng speeds. When chang ing mot or speeds , simply swit ch the needed s peed to[...]

All installatio ns and services must be performed by qualified service personnel. V. ST A RTING THE U NIT A . SEQUENCE OF OPERA TIONS START TRIAL FOR IGN ITION CONTINUOU S SAFE OPERAT IO N CHECK IF FLAM E SI MUL ATION CO NDI TION PRESENT OR ROL L-OU T SW I T C H OPENS, SYSTEM ENERGIZ ES INDUCER FAN F O R 1 5 SECON DS AND CIRCUL ATOR BLO W ER AT HEA[...]

All installatio ns and services must be performed by qualified service personnel. M AI N BU RN ER O PER ATI O N EN D O F CY CL E C ALL FOR H EAT SA TI SF I ED AF TER DEL AY- TO - F A N- ON PERI O D EN DS , CI RCUL ATI NG AI R F A N I S ENE RG I Z ED A T H EAT I N G SP EE D. THE ( OP TI ON AL ) E LECT RON IC AIR CLE ANER A ND HU MIDIFI E R A RE EN E[...]

All installatio ns and services must be performed by qualified service personnel. B. INITIAL START UP: This furn ace does not hav e a pilot. It i s equipped w ith a hot sur face ignit er which automat ically lights the burner . Do not att empt to li ght the burner by hand. Chec k the foll owing items bef ore the initi al star t - up. 1. Check all w[...]

All installatio ns and services must be performed by qualified service personnel. C. ADJUSTMENT OF BTU INPUT RATE: The orifice for this furn ace was sized: 1) for natural gas having a heat ing value o f 1025 B TU per cubic fo ot and a speci fic grav ity of .65, or 2) for l iquefie d propane ga s wit h a heating value o f 2500 B TU per cubi c foot a[...]

All installatio ns and services must be performed by qualified service personnel. GAS PRESSURE CHA RT F O R CMA */CM C* MODEL FURN ACES TABLE 3 This gas furnace i s equippe d with a fixed ori fice siz ed for th e manifo ld pressur e shown on t he rati ng label. The input can only be incre ased, or decreas ed, by adj usting the manifold pr essur e. [...]

All installatio ns and services must be performed by qualified service personnel. Figure 16. : The CMA/CMC furna ce models are direct vent des ign and do not require an air shutter adjus tme nt (air shutters are not used) for proper flame ch aracterist ics. B urner box a ccess co ver must al ways be secured with all screws in place a nd tightened b[...]

All installatio ns and services must be performed by qualified service personnel. F. FURNACE CHECK OUT PROCEDURE Before any sys tem of gas pipi ng is finall y put into ser vice, it shall be care fully tested t o assur e that it is gas t ight as i ndicat ed in the F uel Pi ping Sect ion of thi s Furnace Manu al . NOTICE: All c ontrols o n the unit s[...]

All installatio ns and services must be performed by qualified service personnel. VI. INS T A LLER'S I NSTRUCTIONS TO USER: After co mpleting the install ation, the ins taller shall inform a nd/or demons trate to t he homeow ner: 1. The locati on of all th e instructi ons in the fur nace and that the i nstructi ons must be kept along w ith ins[...]

All installatio ns and services must be performed by qualified service personnel. A . ELECTRIC A L: 1. Check diagnostic code t hrough v iew port pr ior to re moving ac cess door. 2. Check al l wiring for loose connec tions and any signs of damage or unus ual wear . 3. Check for correc t vol tage at the furnace w hen operati ng. 4. Check amp - draw [...]

All installatio ns and services must be performed by qualified service personnel. 5. GA SKETS/SEAL ING MATERIAL S Inspect all vis ible gasket s for sig ns of deg radation or liquid seep age, es pecially any seal s which w ere removed as par t of the i nspection. Re place any suspect gaskets. C. HEAT EXCHANG ER Inspect for corr osion, p itting, w ar[...]

All installatio ns and services must be performed by qualified service personnel. FILTER M AINTEN ANCE PROCEDURE The filt er is loc ated insi de front d oor of t he CMA/CMC . Remove filte r retaini ng rod and rem ove dirty filter. Clean the filter by vacuuming , rinsing with tap water, hosing or dipping in an or dinary deter gent sol ution. After c[...]

All installatio ns and services must be performed by qualified service personnel. 3 flash es, then pa use pressur e switch s tuck open 4 flash es, then pa use open high lim it switch 6 flash es, then pa use 115 volt AC pow er reversed 7 flash es, then pa use low flame sense si gnal 8 flash es, then pa use check ig nitor or i mproper g rounding Cont[...]

All installatio ns and services must be performed by qualified service personnel. TURN THERMO STA T TO CA LL FO R HEA T DO ES T HERMO STA T MA KE CO NT A CT? IS R OOM T EM PE R AT UR E BELO W T HERMO STAT SETTING ? IS R OOM T EM PE R AT U R E ABOVE 90 DE GR E ES F ? TUR N T'S TA T SETTING A BOV E R OOM T EM P. CO OL T HE T HERM OSTA T IS THE T[...]

All installatio ns and services must be performed by qualified service personnel. C HECK W I RI N G TO I ND UC ER A N D I F OK , RE P L A CE IND UC E R AS SEM BL Y. AF TER HO T SURFACE I G NI T OR W A RM- U P , D OES GAS VA LVE OPEN? C HECK W I RI N G TO HO T S UR F A CE I G NI T OR A N D I F OK , RE P L A CE H OT SU R F AC E IGN ITO R A SSEM BL Y [...]

All installatio ns and services must be performed by qualified service personnel. CHECK F OR P ROPER MANIFO LD P RESSURE. No Y es Y es Y es AFTER GAS VA L VE OPENS , DO THE BURNE RS IG NITE? ADJUST TO 3.5" F OR NATURA L GAS OR 10 .0" W C FO R LP G AS IS IG NIT O R POSITIONED CORRECT L Y? R E PO SI T I O N TO CORRECT LO CA TIO N. DO BURNER[...]

All installatio ns and services must be performed by qualified service personnel. DOES SYS TEM R UN U NTI L T H ERM O ST AT I S SAT I SF I ED ? CHECK A L L WI RI NG FOR LOOS E CONNECTI ONS . CHECK FOR SHORT I N WI RE T O T HE RMOSTAT AND CORRECT I F NECESS ARY. DOES BURNER S HUT OFF WHE N THERM OS TAT I S SAT I SFIED? No DOES THE CI RCULATI NG AI R[...]

All installatio ns and services must be performed by qualified service personnel. Yes T R OU BL E SH OOT IN G C OMPL E T E . Yes IF LED LI G HT FLA SHES: 1 FLA SH, THEN PA USE SY ST EM LO CKO UT 2 FLA SHES , THEN PA USE P RESSURE SW ITCH STUCK CLOSED 3 FLA SHES , THEN PA USE P RESSURE SW ITCH STUCK O PEN 4 FLA SHES , THEN PA USE O P EN LIMIT SW I T[...]

All installatio ns and services must be performed by qualified service personnel. A PPENDIX – A REPLA CEMENT P AR T S 58[...]

All installatio ns and services must be performed by qualified service personnel. 59[...]

All installatio ns and services must be performed by qualified service personnel. 60[...]

All installatio ns and services must be performed by qualified service personnel. 61[...]

All installatio ns and services must be performed by qualified service personnel. A PPENDIX – B WIRING DIA GRAMS 62[...]

All installatio ns and services must be performed by qualified service personnel. 63[...]