Bryant 355CAV manuel d'utilisation

Installation Instructions PLUS 95S - - MODEL 355CA V DIRECT - - VENT 4 - - W A Y MUL TIPOISE CONDENSING GAS FURNACE WITH PERF ECT SENSE T PERFECT H UMIDITY T SERI ES A NOTE : Read th e entire instru ction man ual befo re starting th e installatio n. This f ur nac e c a n be ve nte d as a dir e ct ve nt (2- - pi pe) or a s a n op tion al ven tilated[...]

2 Requir ed Notice for Massachusetts I nstallations IMPOR T ANT The C ommonwe a lt h of Ma ss achus ett s re quire s com pli a nce wit h r egul ati on 248 CMR a s fol lows: 5.08: Modi fic ati ons to NF P A - - 54, Cha pte r 10 2) Re vise 10.8. 3 by addi ng the f ol lowi ng addit i onal re quir eme nts : (a .) For al l si de wa ll hori zonta lly ve [...]

3 SAF ETY CONSIDERA TIONS FURNACE RELIABI LITY HAZARD Imp rop er installatio n or m isapp lication o f furn ace may re quire e xces sive s ervi cing or ca use pre mat ure compone nt failure. Appli ca ti on of this f urnac e should be indoors wit h spe ci al attentio n giv en to v ent sizing an d material comb ustio n air re quire ment s, ga s input[...]

4 NOTES: 1. Minimum return-air openings at furnace, based on metal duct. If fle x duct is used, see flex duct manuf acturer’s recommendations f or equivalent diameters. 2. Minimum retur n-air opening at furnace: a. For 800 CFM–16-in. round or 14 1 / 2 x 12-in. rectangle. b. For 1200 CFM–20-in. round or 14 1 / 2 x 19 1 / 2 -in. rectangle. c. F[...]

5 debr is fr om al l HV AC syst em compone nt s af ter cons truc tion is c omplet ed. S Aft er c onstr ucti on is c omple te , ver ify f ur nac e oper ati ng condi tions i ncludi ng igni ti on, i nput ra te, t empe ra ture rise and ven tin g, accord ing to th e manu factu rer’ s instru ction s. If this fu rn ace is in stalled with a direct - - v [...]

6 Insta ller Pack et Inclu de s: Ins tal lat ion, S tart - - - up, and Operating Ins tructi ons Serv ice a nd Maint enance I nst ruct io ns User’ s Informat ion Manual Warran ty Cer tificate Loose Parts B ag includ es: Quan tity Collector Box or C onde nsate trap ex tension tube 1 Induc er ho usi ng drai n tube 1 1/2 - - - in CP VC street elbow 2[...]

7 S The use of copper t ubing for gas pi ping is not appr oved by the state o f Massach usetts. Electrica l Connec ti ons S US : Natio nal E lectrical Co de (N EC ) ANS I/NF P A 70- - 2005. S CANADA: Cana dia n Elec tr ic al Code CSA C2 2.1. ELECTROST A TIC DISCH ARGE (ES D) PRECAUTIONS UNIT DAMAGE HAZARD Failu re to follow th is caution m ay resul[...]

8 1/2 OD INDUCER HOUSING DRAIN CONNECTION 1/4 OD COLLECT OR BO X TO TRAP RELIEF PORT 5/8 OD COLLECT OR BO X DRAIN CONNECTION 1/2 IN. PVC OR CPVC SCREW HOLE FOR UPFLOW OR DO WN- FLOW APPLICA TIONS (OPTIONAL) 1 4 2 7 8 1 8 7 SLO T FOR SCREW HORIZONT AL APPLICA TION (OPTIONAL) WIRE TIE GUIDES (WHEN USED) 1 2 1 3 4 1 3 4 FRONT VIEW SIDE VIEW FURNACE DO[...]

9 PLUG CAP COLLECTOR BOX DRAIN TU BE (BL UE & W HITE STRIPED) INDUCER HOUSING (MOLDED) DRAIN T UBE (BEHI ND COLLECTOR BOX DRAIN TUBE) COLLECTOR BOX TUBE (PIN K) COLLECTOR BOX DRAIN TU BE (BLUE) COLLECTOR BOX TUBE (GR EEN ROUTES BEHIND INDUCER) FIELD- INST ALLED FACTORY- SUPPLIED DRAIN TUBE COUPLING (LEFT DRAIN OPTION) FIELD-IN STALL ED FACTORY-[...]

10 PLUG CAP COLLECTOR BOX DRAIN TUBE (BLUE & W HITE STRIPED) INDUCER HOUSING (MOLDED) DRAIN TUBE (VIOLET) COLLECTOR BOX TUBE (PIN K) COLLECTOR BOX DRAIN TU BE (BLUE) COLLECTOR BOX TUBE EX TENSION CONDENSATE T RAP COLLECTOR BOX TUBE (GR EEN) A07276 Fig. 9 - - Condens ate T rap DOWN FLOW APPLI CA TION S A downfl ow furna ce appl ica tion i s wher[...]

11 b. Remove and dis car d UPPER ( molde d) induc er housi ng dra in tube whic h wa s pre viousl y c onnec ted to c ondensa te trap. CAP PLUG COLLECTOR BOX DRAIN TUBE (BLUE & W HITE STRIPE D) INDUCER HOUSING (MOLDED) DRAIN TUBE (VIOLET) COLLECTOR BOX TUBE (PIN K) COLLECTOR BOX DRAIN TU BE (BLUE) COLLECTOR BOX TUBE EX TENSION CONDENSATE TRAP COL[...]

12 COMBUSTION – AIR INTAKE VENT MANUAL SHUTOFF GAS VALVE SEDIMENT TRAP CONDENSATE TRAP DRAIN ACCESS OPENING FOR TRAP 30 ″ MIN WORK AREA A 12-IN. MIN HORIZONTAL PIPE SECTION IS RECOMMENDED WITH SHORT (5 TO 8 FT) VENT SYSTEMS TO REDUCE EXCESSIVE CONDENSATE DROPLETS FROM EXITING THE VENT PIPE.  5 3 ⁄ 4 ″ [...]

13 1. Dis conne ct c olle c tor box pre ss ure tube ( pink l abel ) attached to H igh P ressu re Sw itch. 2. Use s ma ll er dia met er tube ( fa ctor y - - suppl ed in loos e pa rs bag) to e xte nd tube di sconne ct ed i n Ite m 1. 3. Route ext ended tube : a. Behind induc er housi ng. b. Betw ee n blow er s helf a nd induc er hous ing. 4. Det er m[...]

14 Condens ate T rap T ubing NOTE : See Fig. 14 or tube routi ng labe l on mai n furna ce door to che ck for prope r conne ct ions. 1. Colle ctor Box Dra inTube a. Rem ov e factory - - in stalled plu g fro m LOW ER collector box dra in tube (bl ue a nd white st r ipe d labe l). b. Inst all re move d cl amp a nd plug i nto UPPER coll e ct or box dr [...]

15 FRONT BACK FRONT B A C K A93043 Fig. 16 - - Pr ohibit Inst allat ion on Bac k UNIT DAMAGE HAZARD This gas fur nace may be us e d for c onstr uc ti on heat provi ded tha t: - - Th e fu rnace is p erman ently in stalled w ith all electrical wirin g, p ipin g , air filters, ven ting an d d uctin g installed accord ing t o these installatio[...]

16 Ha zard o us Locati ons FIRE, EXPLOSI ON, INJUR Y OR DEA TH HAZARD Im prope r loca tion or inade quate prot ect ion could res ult in fi re or expl os ion. Wh en fu rnace is in stalled in a residen tial garag e, it mu st be installed so th at bu rners and ign ition so urces are located a mi nimum of 18 in. (457. 2mm) a bove floor . The fur nac e [...]

17 PLENUM OPENING C A B D FLOOR OPENING A96283 Fig. 19 - - Floor and Plenum Ope ning Dime nsi ons (OR OTHER MANUF ACTURER S COIL CASING WHEN USED) FURNACE COMBUSTIBLE FLOORING DOWNFLOW SUBBASE SHEET MET AL PLENUM FLOOR OPENING A07585 Fig. 20 - - Furnac e, Pl e num, and Subbase I nst alle d on a Combus ti ble Fl oor F ACTORY SUPPLIED CASED COIL O[...]

18 NOTES: ANGLE IRON OR EQUIV ALENT (B) (A) ROD L OCA TION USING DIMPLE L OCA TORS (SEE DIMENSIONAL DWG FOR L OCA TIONS) 13 / 16 -IN. MAX AL TERNA TE SUPPORT L OCA TION FROM BACK AL TERNA TE SUPPORT L OCA TION 4-IN. MIN 8-IN. MAX 3 / 8 -IN. ROD (A) (B) (A) (B) (B) (A) 1. A 1 In. clearance minimum between top of furnace and combustible material. 2. [...]

19 T able 1 – O peni ng Dim ens ions ( in. /m m) FURNACE CASING WIDTH AP PL ICA T ION (APPRO VED F ACT ORY SUPPLI ED CASE D COILS AND COIL B OX: CD5, CKR, CAP VP , CARVP , CAPMP , CARMP , CNPVP , CNRVP , AND KCAKC) PLENUM OPENING FLOOR OPENING A B C D 17 ½ in. 445 mm Upfl ow Appl icat io ns on Combus tibl e or Nonc ombus tibl e Fl oor ing (KG AS[...]

20 hu mid ifier, or o ther accesso ries. All accesso ries M US T b e con n ected extern al to furnace main casin g. Ret urn Air Conne ct ions FIRE HAZARD Fai lure t o fol low thi s wa rni ng could r esul t in pe rs onal i njury , death o r pro perty d amag e. Nev er con nect return - - air d u cts to th e back of th e furn ace. Retu rn air d uct co[...]

21 FILTER RETAINE R WASHABLE FILTER A93045 Fig . 2 4 - - F ilter Insta lled fo r S ide In let NOTE : Side re turn- - a ir openi ngs can O NL Y be us ed in Upfl ow con figu ratio ns. In stall filter(s) as sho wn in F ig. 24 . Fo r botto m return - - air app lication s, filter may need to b e cut to fit som e furn ace wid ths. Install filter as sh ow[...]

22 BOTTOM CL OSURE PA N E L FRONT FILLER P ANEL A93047 Fig. 26 - - Removi ng Bottom Cl osur e Panel UNION SEDIMENT TRAP MANUAL SHUTOFF VALVE (REQUIRED) GAS SUPPLY A93324 Fig . 2 7 - - T y pica l Ga s P ipe A rran gem ent COMBUSTION-AIR PIPE GROMMET GAS LINE GROMMET GAS LINE COMBUSTION -AIR PIPE VENT PIPE VENT PIPE GROMMET UNUSED 1-3/4 -IN. DIAMETER[...]

23 T able 3 – Maxi mum Capac ity of Pi pe* NOMI NAL IRON PIPE SIZE (IN. ) INTERN AL DIAMETER (IN. ) LENGTH OF PIPE ( FT/M) 10/ 3.0 20/ 6.1 30/ 9.1 40/ 12.2 50/ 15.2 1/2 0.622 175 120 97 82 73 3/4 0.824 360 250 200 170 151 1 1.049 680 465 375 320 285 1 --- 1 / 4 1.380 1400 950 770 660 580 1 --- 1 / 2 1.610 2100 1460 1180 990 900 * C ubi c ft o f g[...]

24 115-V FIELD-SUPPLIED DISCONNECT SWITCH 115-V SINGLE PHASE AUXILIARY J-BOX FURNACE CONTROL CENTER TWO WIRE 24-V TERMINAL BLOCK THREE-WIRE HEATING ONLY FIVE WIRE NOTE 5 NOTE 1 NOTE 3 THERMOSTAT TERMINALS FIELD-SUPPLIED DISCONNECT CONDENSING UNIT R W2 WC R G Y GND GND GND GND FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING [...]

25 Fa ctory In stalled J - - B ox Locat ion Install p ow er entry h o le filler p lu gs (facto ry - - s uppli ed in l oos e par ts ba g) in unus ed powe r e ntry hol e s. (Se e Fi g. 31.) A05113 FAC T O RY INST ALLED LOCA TION UNUSED 7/8-IN. DIAMETER POWER ENTRY HOLES POWER ENTRY HOLE FILLER PLUG (FACTORY- SUPPLIED LOOSE PARTS BAG) A05113 Fig. 31 -[...]

26 Re moval of Exis ting Furnac e s fr om Common V ent Sys te ms Wh en an existin g Categ ory I fu rnace is remo ved o r rep laced, the ori ginal venti ng s yst em ma y no longer be si zed t o proper ly vent the remain ing attach ed ap plian ces. An im pro perly sized C atego ry I vent i ng sys tem c ould c ause t he f orma tion of c ondensa te in [...]

27 T able 5 – Appr oved Combus ti on - - Air and V ent Pi pe, Fi tt ing and Ce ment Mat er ials ASTM SP EC IFIC A TIO N MA TERIAL PI PE FITTI NGS SOL VENT CEMENT DESCRIPTI ON (MARKED ON MA TERIAL) AND PRI MERS D1527 ABS Pipe — — Sche dule40 D1785 PVC Pipe — — Sche dule40 D2235 For ABS — — Solve nt For ABS Ceme nt D2241 PVC Pipe — ?[...]

28 24-V THER MOSTAT TERMINAL S PL2 – HOT SURFACE IGNITER & I NDUCER MOTOR CONNECTOR 115-VAC (L2) NEUTRAL CONNECTIONS 115-VAC (L1) LINE VOLTAGE CONNECTIONS EAC-1 TERMINAL (115 -VAC 1.0 AMP MAX .) PL1 – LOW VOLTAGE MAIN HARNESS CONNE CTOR PL3 – ECM BLOWER HARNESS CONNECTOR T RANSFORMER 24-VAC CONNECTIONS 3-AMP FU SE STATUS AND COMM LED LIGH[...]

29 12 inches (30 cm) for appliean ces >10,000 Btuh(3 kW) and < 100,000 Btuh(30kW), 36 inches (91cm) for appliances > 100,000 Btuh(30kW) A06675 Fig. 34 - - Dir ec t V ent T er minat ion Cle arance 355CA V[...]

30 A05013 Fig. 35 - - V enti late d Combust ion Ai r V ent T er mi nati on Clear ance 355CA V[...]

31 At least 36 in. 18 in. maximum V e rtical separation between combustion air and vent 8 3/4 in. for 3 in. kit 6 3/4 in. for 2 in. kit Roof T e rmination (Preferred) Abandoned masonry used as racewa y (per code) At least 36 in. A Maintain 12 in. min. clearance abo ve highest anticipated snow lev el, maximum of 24 in. abo ve roof Concentric V ent a[...]

32 FURNACE PIPE DIAMETER TRANSITION IN VERTICAL SECTION NOT IN HORIZONTAL SECTION A93034 Fig. 38 - - Combust ion Air and V ent Pi pe T rans it ion Locat ion and Elbow Conf igurat ion UNIT OPERA TION HAZARD Failu re to fo llow this caution may resu lt in in termittent unit oper ati on. Wh en installin g com bu stion air and v ent s ystem o f sho rt [...]

33 COMBUSTION AIR PIPE BURNER BOX COMBUSTION AIR INTAKE HOUSING 3/8" ID TUBE TRAP TO OPEN DRAIN 3/16" DRILL 4 ″ MIN A93035 Fig. 40 - - Int ake H ousi ng Plug Fi tti ng Drai n 8. Install casing h o le filler cap (facto ry - - s uppli ed in l oos e par ts ba g) in unus ed com bust ion ai r pipe ca si ng hole. Att ac hment of Combus tion A[...]

34 Cra wlspa ce te rmi nat ions re quir e the open end of t he com bust ion ai r int a ke pi pe to poi nt downwa rd. Mai ntai n 3 inche s ( 76.2mm) of cl e ar anc e bel ow the f loor jois t insul ati on and 12 inche s (304. 8mm) above t he gra de. Scr een the e lbow wit h a wir e me s h sc ree n no sm al ler t han 3/8- - in. (9. 5mm) squa re. ( Se [...]

35 (304.8mm) minimum A06672 Fig. 41 - - Att ic T erm inat ion (304.8 mm) minimum (76.2 mm) minimum A06673 Fig. 42 - - Crawl space T erm inat i on 355CA V[...]

36 (304.8mm) minimum 3” (76.2mm) minimum A06674 Fig. 43 - - Crawl space T erm inat i on 355CA V[...]

37 HORIZONTAL TO ROOF HORIZONTAL TO SIDEWALL VERTICAL TO SIDEWALL VERTICAL TO ROOF V ENT PIPE COMBUSTION-AIR PIPE COMBUSTION-AIR PIPE VENT PIPE COMBUSTION-AIR PIPE VENT PIPE COMBUSTION-AIR PIPE VENT PIPE 12 ″ MIN 12 ″ MIN 12 ″ MIN (304.8mm) 12 ″ MIN (304.8mm) NOTE : A 12-in. (304.8mm) minimum offset pipe section is recommended with short (5[...]

38 V ent T ermina tio n K it (Direct V ent /2 - - Pip e Sy stem Only) NOTE : Alw ays refer to the in structio ns in termin ation k it for the latest versio n. Co mb ustio n air an d v ent p ip es MUS T term inate o utsid e stru cture. A facto ry accessory termin atio n kit m ust be in stalled as sho wn in T abl e 8. Ther e are f our options of ve n[...]

39 T able 6 – M aximum All owable Expos e d V ent Pi pe Lengt h (Ft / M) wit h Insul ati on in Winter Desig n T em pera ture Amb ien t* UNIT SI ZE WINTER DESI GN MAXIM UM PIPE INSULA TION THI CKNESS† WINTER DESIGN TEMPERA TURE MAXIM UM PIPE DIAMETER ( IN. ) 0 3/8 1/2 3/4 1 042060 20 _ F/- - 6 . 7 _ C 2 30 / 9.1 55 / 16.8 61 / 18.6 70 / 21.3 70 [...]

40 T ab le 7 – M ax imu m Allo wa ble P ipe L eng th (F t / M) Dir ec t V ent ( 2- - Pipe O nly) NUMBER OF 90 _ ELBOWS AL TITUDE UNIT SI ZE (BTUH) T ermin atio n Ty p e Pipe Di a (IN.)* 123456 0 to 2000 60,000 2 P i p e o r 2 --- I n . Conc entr ic 1 --- 1 / 2 50 / 15.2 45 / 13.7 40 / 12.9 35 / 10.7 30 / 9.1 25 / 7.6 2 70 / 21.3 70 / 21.3 70 / 21[...]

41 T able 9 — Maximum All owable Pi pe Length (Ft / M) (Conti nued) AL TITUDE UN IT SIZE (BTU H) Dir ec t V ent ( 2- - Pipe O nly) NUM BE R OF 90 _ ELB OWS T ermina tion Ty p e Pipe Dia (IN.)* 1 2 3 4 5 6 6001 to 7000‡ 60,000 2 P i p e o r 2 --- I n . Conc entr ic 1 --- 1 / 2 35 / 10.7 30 / 9.1 25 / 7.6 20 / 6.1 15 / 4.6 10 / 3.0 2 70 / 21.3 70[...]

42 T a ble 8 – V ent T erm ina tion Kit fo r Direct V ent / 2 - - Pip e Sy stem DIRECT VENT ( 2 PIPE) TERMI NA TION KIT TERMI NA TION SYSTEM DIAMETER OF COMBUSTI ON AIR AND VENT PIPES ( IN I NCHES) 2in. Conc e ntr ic V ent Kit Sin gl e Pen etration o f W all or R oo f 1 ,1 - - 1 / 2 ,2 ,o r2 - - 1 / 2 3in. Conc e ntr ic V ent Kit Sin gl e Pen etr[...]

43 2. Loc ate he at t ape bet wee n si des of c ondens at e tra p ba ck. (Se e Fig. 46.) 3. Use w ire ties to secu re h eat tape in place. Wire ties can be posi tione d in notc he s of c ondensa te tr a p si des. ( Se e Fi g. 46.) 4. Wrap field drain pip e w ith remainin g heat tape, appr oxima te ly 1 wra p per f t. 5. Wh en usin g field - - su pp[...]

44 2. Lo cate setup switch S W4 o n furn ace contro l. (See Fi g. 33.) 3. See T able 5 for setup sw itch descrip tio n. (See Fig . 40 an d Fig. 49. ) 4. Repla ce ma in fur na ce door a n d blowe r access pan el. Pri me Condens ate T r ap with W ate r UNIT OPERA TION HAZARD Failu re to fo llow this caution may resu lt in in termittent unit op eratio[...]

45 A06677 Fig. 49 - - Wi ring Diagr am 355CA V[...]

46 A99118 Fig. 50 - - Induc er Hous ing Drain T ube A01050 Fig . 5 1 - - F illing Co nd ensa te T rap T able 9 – Furnac e Set up Switc h Des cr ipti on SETUP SWITCH NO. SWITCH NAME NORMAL POSITI ON DESCRIPTI ON OF USE SW1- - 1 Sta tus Code Re c over y OFF T urn ON to r etr ieve up t o 7 s tor e d st atus c ode s f or tr oubles hooting assistance [...]

47 Purge Gas Li nes If not pr evious ly done, pur ge the li nes af te r al l conne ct ions ha ve been m ade and ch eck fo r leak s. FIRE AND EXPLOSI ON HAZARD Failu re to follo w th is caution cou ld result in a fire, expl osion, pe rsona l injur y , or dea th. Ne ver pur ge a gas li ne into a c ombus ti on cha mbe r . Ne ver test for gas leaks wit[...]

48 and op erate th e ind ucer m oto r IDM at full sp eed u n til fl ame is no longe r proved. 5. Ind u cer Sp eed C h ang e — If th e cycle starts in me dium hea t, the f urna ce c ontr ol CPU re duc es t he i nduce r speed sligh tly after flam e sense. If cy cle starts in hig h - - h eat, th e furn ace con tro l CP U in creases th e ind ucer spe[...]

49 Th e wall th ermo stat ”calls for h eat”, clo sing th e R to W1 circu it for med ium - - h eat or closin g the R to W1 - - an d - - W2 circu its fo r hig h - - h eat. T he fu rnace co nt rol p erform s a self - - ch eck, an d verifies th e lo w - - heat an d m ediu m - - h eat pressu re switch con tacts LPS and MPS ar e open, t he n de- - en[...]

50 2. Hi gh cool ing –W h e nt h eRt oG - - a n dY / Y 2c i r c u i ti s cl osed and the re is a dema nd f or dehum idi f ic ati on, the furn ace blo wer m oto r B L WM w ill d ro p th e b low er airflow to 86% of high- - cool ing a irf low . High- - cool ing ai rfl ow is b a s e do nt h eA / Cs e l e c t i o ns h o w ni nF i g . 4 7 . 3. Co olin[...]

51 A06678 Fig. 52 - - Ste p - -Modulati ng Furnac e wit h Singl e - -Speed Ai r Condit ioni ng A06679 Fig. 53 - - Ste p Modulat ing Furnac e wi th T wo - - Spee d Air Condit ione r A06680 Fig. 54 - - Ste p Modul ati ng Furnac e wit h Single- -Speed H eat Pump (Dual Fue l) A06681 Fig. 55 - - Ste p Modul ati ng Furnac e wit h T wo - - Spe ed H eat Pu[...]

52 A06682 Fig. 56 - - Ste p Modul ati ng Furnac e wit h Single- -Speed H eat Pump A06683 Fig. 57 - - Dual Fuel t he rm ost at with Ste p - - Modul ati ng Fu rna ce an d T wo - - S peed H eat Pu mp A06684 Fig. 58 - - T wo - - Stage Ther mostat wit h Ste p Modulat ing Furnac e and T wo - - Spe ed Air Condi t ione r A06685 Fig. 59 - - Singl e- - Stage[...]

53 NOTE : R eference F ig . 52 - - 5 9: 1. He at pum p MUST ha ve a high pr es sur e swi tc h for dual fuel ap p lication s. 2. Ref er to outdoor e quipm ent Ins ta lla t ion Ins truc tions for addi tiona l inf or ma ti on a nd se tup proc edure . 3. Select th e “ZO NE ” po sition o n th e two - - speed heat pu mp cont rol. 4. Outdoor Air T emp[...]

54 NOTE : DO N OT set m ediu m - - h eat m anifo ld p ressu re less th an 1.3- - in. wc or mor e t han 1.7- - in. wc f or natur a l gas . UNIT DAMAGE HAZARD Failu re to follow th is caution may resu lt in red uced furn ace life. DO NOT bottom out gas val ve r egul ator adj us ti ng sc re ws. Th is can result in unr egu lated man ifold p ressure and[...]

55 T able 10 – Ori f ic e Siz e* and Manif old Pr es su r es for Gas I nput Rate (T abulat ed Data Bas ed on 20,000 BTUH H igh He at / 13, 000 Btuh Me d - - He at / 8,000 Bt uh Low - - He at pe r Burne r , De rat e d 2% / 1000 Ft. Above Se a Le vel ) A07253 355CA V[...]

56 Or if ic e Size * and Mani fol d Pr ess ure s for Gas Input Rat e (T abulat ed Data Bas ed on 20,000 BTUH H igh He at / 13, 000 Btuh Me d - - He at / 8,000 Bt uh Low - - He at pe r Burne r , De rat e d 2% / 1000 Ft. Above Se a Le vel ) A07254 355CA V[...]

57 UNIT DAMAGE HAZARD Fai lure t o foll ow this c a uti on may r es ult in c ompone nt dam age . DO N OT red rill orifices. Imp ro per drillin g (b urrs, out- - of- -round holes , et c. ) can caus e exc es sive burne r noise and mi sdi rec tion of burne r f la mes . (Se e Fig. 61.) CAUTION ! h. Jumpe r R to W/W 1. i. Let f urnac e run for 3 minut e[...]

58 T a b l e1 2–G a sR a t ec uF t / H r SECONDS SI ZE OF TEST DIA L SECONDS SI ZE OF TEST DIA L FOR 1 1 2 5 FOR 1 1 2 5 REV OLUTION cu ft cu ft cu ft REV OLUTION cu ft cu f t cu f t 10 360 720 1800 50 72 144 360 11 327 655 1636 51 71 141 355 12 300 600 1500 52 69 138 346 13 277 555 1385 53 68 136 340 14 257 514 1286 54 67 133 333 15 240 480 1200[...]

59 NOTE : Whe n using a n ele ctr onic the rmost at, se t cyc le r ate f or 3 cycles p er h r . 3. Retu rn setup sw itch SW1 - - 2 to O FF p ositio n an d replace the rmos ta t on subba se . Ch eck Sa fety Co nt r ol s Th is section co vers th e safety co ntro ls th at mu st b e ch ecked bef ore the i ns ta lla tion is c ompl et e. The fl a me sens[...]

60 CHECKLIST — I NST ALLA TION LO A D C A LC U L AT I O N ________________ Heat in g Loa d (Bt uh) Cond ensat e Drai n ________________ Coo l ing Loa d (Btuh ) ________________ Un it Lev el o r Pit ch ed F or war d ________________ Fu r n ac e M o d e l Se le c t io n ________________ Int ern al T ubi ng Conne ct i ons F ree of Kink s and T raps [...]