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SC / SCT Gas / Off Boilers Installation , Operation b Maintenance Manual PEERLESS _ CAST IRON BOILERS
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" Oil , Gas or Comb | nhtion G _ s Knockdown ( Factory Assembled Split Block Sections ) or Packaged Hot Water or Steam Boilers 6 Sizes 5 - 10 Sections 3.0 to 5.5 GPH Input Up to 83.7 % Combustion Efficiency Forced Draft Venting • Only Requires a Three Foot Vent Above the Roof High Efficiency Power Burners • Choice ofBeckett , Carlin , Gordon - Piatt , Power Flame or Webster Top Flue Outlet • Includes Locking Damper Large Water Content , Wet Base Section Design • Ideal for Steam and Large Volume Hot Water Jobs Steel Push Nipples • Provide a Permca _ cmt Water Tight S _ al Belween Sections • Unaj ] ' _ cted by Petroleum and Other Conlaminanis Easy to Clean • Flueways ca _ be Cleanedj - rom Either ih _ _ I _ Ji Side or Top Safety Controls • Probe or Float Type Low Water Cut - OffAvailable Tankless Coils • For Domestic Hot Water Production on Hot Water Boilers Deluxe Insulated Enameled Steel Jacket • Reduces Boiler Heat Loss • Honeywell Operating Controls • Manual Reset High Limit Control • LWCO on Packaged Boilers • Tankless Coils • Various Burner Options and Voltages • FM and IRI Control Systems Peerless Heal _ , r Company is pleased Io offer o _ lL " of lhe illosf compreh _ nsiw ! warranty programs in the inda , slry . All Peerless conmlercial cast iron boilers include a fi _ ll , one y _ ' ar warranty . A [ _ I _ - _ - _ r'SS ® limited , fen year warr ( mty ol _ the ca . sl troll sections is provided Jbr all commercial lint water and steam boilers . Five cmd len - year t _ xIt ! llded wanantics on paris and labor are flow auailable . CAST IRON BOILERS Ple _ e Colisttll I ) ( , ( ' rless [ ] _ ' _ llt , r ColllpCllly . lbr COTil [ ) lt _ l _ ! warrallly iqtbrnlalioll . Peerless Heater Company • 231 North Walnut Street • Boyertown , PA 19512 - i021 • 610 - 367 2153 • wv _ v . peerless - heater . com FAB SC R3 ( 11 / 02 1 5M ) Pnnted in U S A
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Series SC / SCT pr = - r = - RLESS Semi - Commercial • Packaged or Knockdown Forced Draft Venting Power Burner CAST IRON BOILERS • Oil , Gas , Gas / Oil J Steam or Hot Water Boilers Optional Tankless Coils Available from the factory as knockdown split blocks or completely packaged assembled units , with steel push nipples , for easy installation . The top or side clean out features allow for easier cleaning , maintaining highest operating efficiency . Pressurized , forced draft firing requires only a three foot vent above the roof , without the need for a chimney , for simple installations . The SC and the SOT hot water boilers provide optional tankless domestic hot water openings for versatility . The SCT designation indicates that an optional , larger , tankless domestic hot water coil can be installed in its specially designed rear section for steam or hot water boilers , insuring ample domestic hot water production . I = B = R Burner Combustion Water Content Capacity Net I = B = R Ratings Efficiency ( Gal . ) Uoiler I = B = H Model Output Boiler Oil Input Gas Input Steam Steam Water Number MBH H . P . GPH MBH Sq . Ft . MBH MBH Oil Gas Steam Water SC / SCT - 05 343 10.2 3.00 433 1071 257 298 83.3 80.8 20.40 26.04 SC / SCT - 06 405 12.1 3,50 505 1267 304 352 83.7 81.2 23.52 30.36 SC / SCT - 07 462 13.8 4.00 577 1446 347 402 83.5 81.0 26.64 34.68 SC / SCT - O8 519 15.5 4.50 649 1621 389 451 83.4 80.9 29.76 39.03 SC / SCT - 09 575 17.2 5.00 722 1796 431 500 83.2 80.7 32.88 43.32 SC / SCT - 10 632 18.9 5.50 794 474 550 83.0 80.5 36.00 The above catings are based on 12 5 % CO2 ( oil ) and + 10 in W . C at Ihe vent TPe Net I - B = R Ra _ ngs shown include a _ k : wance fo _ notma _ p _ ping and p _ c _ up load in accordance w _ h T _ st _ g and Ral _ g st _ e _ laf d for LOW pressure Cast IrOn Heatbng Boilers of The V _ / dren _ s Institute Water rahngs are base _ l on a p _ F . ng and p _ kup a _ lowan _ factor of 1 to 15 Steam ral _ ngs based on aM ar _ owaece factor of I 33 The Peedess Heater Company should b _ consu , ed before selectbng a boiler for grarity hot wale _ installations and _ ns _ a _ ations havir _ unusual F . plng and p _ kup requkements such as extended p _ p _ ng systems ¸ exposed piping ¸ night set back . et ¢ Rallngs shown a _ e for e _ evaticns up IO 2C00 lear For e _ evations above 2 . OO0 feet ratings sheul _ be _ educed at the rate of 4 petce _ t for each 1C _ O leer above sea level I B R Burner Capacity is based on G P H with a heat , rig va _ ue of 14OOOO @ TU / gal Burner , nput base _ on maximum altitude of 2 ¸ O0O _ _ or o _ e _ aWtud _ ¢ onsu _ _ actory
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Cast Iron Block Steam Water H 3 / 4 " Low Limit Control N / A Cast Iron Section I 3 / 4 " Press • Gauge , Oper . N / A Cont . & Limit Cont . J 3 / 4 " N / A Operating Control K 3 / 4 " N / A Limit Control E L 1 / 4 " N / A Theraltimeter M _ / 2 " Gauge Glass & N / A Low Water Cutoff Return Optional Return Secondary Probe Secondary Probe Low Water Cutoff Low Water Cutoff p Safety Valve Relief Valve Q 11 / 4 " Return Return ( 05 - 06 ) l _ / z " Steam Boitar . ( 07 - 10 ) Tankless Copper Water Heater is located in the upper front R 3 / 4 " Drain Cock Drain Cock nipple port when installed on a Hot Water Boiler . s 3 / 4 " N / A Optional High Limit Both Heaters may be installed on a Water Boiter when a greater volume of Domestic Hot Water is desired . T 3 / 4 " Primary Probe N / A Low Water Cutoff Boiler Width Model of Flue of Flue Size Length Top to Floor Tappings Tapped Inter . " A " " B " - F - Number - C - " D " " E " - G - " G1 " SC / SCT - O5 22 _ / 2 " 24 _ / 2 " 431 / 4 " 10 " 131 / 4 " 7 " 17 % " SC / SCT - 06 22 _ / z " 28 _ ' 4 " 43V4 " 10 " 15 % " 9 " 21 - % " SC / SCT - 07 22V2 " 33 " 43V4 " 10 " 171 _ " 9 " 257 / _ " SC / SCT - 08 22 _ / 2 " 371 / 4 " 43 % " 10 " 19 % " 9 " 301 / e " SC / SCT - 09 22V2 " 41V2 " 43V4 " 10 " 21 ¾ " 10 " 34 _ ' B " SC / SCT - IO 22V2 " 453 / , " 43 % " 10 " 23 % " 10 " 38 % " 17 _ / _ 6 "
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I " , 1 " 1 . JI _ ( e ] lV ] f _ e ] _ F _ l % . WATER PIPING The supply and return connections should be sized to suit the system . The supply should be STEAM PIPING piped out of the top of the back section and the The return from the system should always enter return piped to the bottom of the front section . equalizer through Har [ ford Loop , 2 " to 4 " below water line . There is a 3 / 4 " tapping in the top of the back section for air elimination . Boiler Model Number Header SC / SCT - 05 SC / SCT - 06 SC / SCT - 07 SC / SCT - 08 SC / SCT - 09 SC / SCT - lO Htr X - 1082 Htr X - 1020 Htr ) ( - 1021 Htr ) ( - 1022 Optional Tankless Domestic Water Heater Ratings : Boiler Htr . X - 1620 Htr . X - 1021 Htr . X - 1022 Htr . X - 1082 " Model No . GPM GPM GPM GPM ( Steam ) SC - 05 4.75 - - - - 4.75 SC - O6 5.00 6.00 - - 5.00 SC - 07 5.25 6.50 - - 5.25 SC - 08 5.50 7.00 10.00 5.50 SC - 09 5.75 7.50 11.06 5.75 SC - IO 6,00 8.00 12.00 6.00 * Optional tankless coil available for the SCT boiler only . Water heater ratings are based on intermittent demands40 ° F to 140 ° F rise with 200 ° F boiler water .
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SERIES SC / SCT BOILER SPECS _ . ' tl : llll41lUJl ' . lll = ! lli _ [ 17 | = l [ tllltl | [ ! l [ o [ _ olol Boiler * Approx . Model Shipping Wt . • Factory Assembled Split Block Number ( Ibe . ) ( 5 & 6 Section t Block ) ( W , WU , S , SU Models ) • Hi - Temperature Rope Seal SC - 05 815 • Deluxe Insulated Enameled Steel Jacket SCT - 05 • Aluminized Steel Flue Collector • Front Coil Cover Plate SC - 06 910 • Cerafelt Base Liner SCT - 06 • Drain Cock ( WUP , SUP Models ) • Lock Type Damper SC - O7 1005 • High Limit - Operating Control SCT - 07 • Low Water Cutoff ( Pkg . Boilers ) Water SC - O8 1100 • Theraltimeter SCT - 08 • 30 PSI Pressure Relief Valve ( 50 PSI Optional ) SC - 09 1195 Steam • Gauge Glass & Fittings SCT - 09 • Steam Gauge SC - 10 1280 • 15 PSI Safety Valve • Rear Coil Cover Plate ( SU , SUP Models ) SCT - 10 * Based on Standard Oil Burner _ . . ' L = - ' il = " " " _ o1117 , , _ OIL GAS GAS / OiL Number of Beckett GP GP Sections Model Model Model SC / SCT - 05 CF500 S4 . 2G S4 . 2GO SC / SCT - 06 CF500 $ 4.2G S4 . 2GO SC / SCT - 07 CF800 $ 4.2G S4 . 2GO SC / SCT - 08 CF800 $ 4.2G $ 4.2GO SC / SCT - 09 CF800 $ 4.2G $ 4.2GO SC / SCT - 10 CF800 $ 4.2G $ 4.2GO PEERLESSHEATERC0 . Example : 231 North Walnut Street O - SC - 06 - WU - STD - 30PSI Boyertown , PA 19512 - 1021 - - T T - - q T Series Sects . STD , IRI , / Phone : 610 - 367 - 2153 , , FAX : 610 - 369 - 3284 Specify 15 PSI Steam www . peerless - heater . com BC or SCT ( Std , ) Blank = No Burner 30 PSI Water ( Std . ) O = Oil Water Steam 50 PSI G = Gas W S = LessBurner GO = Gas ! Oil WU SU = w / Burner & Controls WUP SUP = Pkg . w / Bum . & Contr . IHD @ Ou - " o _ , li WP SP = Pkg . LessBurner ASME HI Division galTia o1 gama NOTE : Special burners should be specified on order . cLrr - sc R9 ( 11 / 02 - 3M ) , printed in USA 02002 Peedess Heater Company
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SERIES EC / ECT / SC / SCT INSTALLATION , OPERATION & MAINTENANCE MANUAL ADDENDUM FOR INSTALLATION OF PRIMARY PROBE LOW WATER CUT OFF LIMIT x 3 NIPPLE 0 TEE USE TAPPINGS A & C FOR 3 / 4 x 3 / 4 x 1 / 4 is APPUCATION STEAM GAUGE 1 1 / 2 NPT / SKIM TAPPING _ w / 5 / 4 x 1 / 4 BUSHINO _ 9 1 / 4 " GAUGE GLASS CG450 PROBE g 1 / 2 X 1 / 2 W / 1 / 2 COUPLING . A C ALTERNATE Figure 1 : Rear View Figure 2 : Primary Probe LWCO LIMIT / SIPHON Control Location ORIENTATION IrAq [ i " _ iJ - l [ ' ] _ l Do not install a probe low water cut off in the boiler primary probe tapping unless the low water cut off is equipped with a timed on and off feature . The cycled off time will allow the probe low water cut off to sense the true water level in the boiler and eliminate a false reading caused from sensing a foaming or surging water condition . Failure to use a timed low water cut off could result in a failed heat exchanger . A - Control Mounting Instructions NOTE : Longer gauge glass and rods are required for use with the optional CG - 450 Primary Probe Low Water Cut Off . The gauge glass carton , 22 - 162 - 10 , is provided with a packaged boiler . For a KD boiler the longer gauge glass carton is located in a special Probe Low Water Cut Off Carton , 90759 . Packaged Boilers : The CG 450P LWCO , and PA404A limit are installed and wired at the factory . The boiler miscellaneous parts carton , located within the boiler crate , contains the longer gauge glass carton 22 - 162 - 10 , Gauge Valves Carton 20 - 105 - 03 , fittings end components . KD Boilers : A separate Primary Probe Low Water Cut Off Carton , 90759 is required . This carton contains the CG450 LWCO , 22 - 162 - 10 longer glass / rods carton , 3 / 4 " x 3 " nipple , 3 / 4 " x 3 / 4 " x 1 / 4 " tee , ( 2 ) 1 / 2 " x 2 " nipples and ( 2 ) 1 / 2 " couplings . Use these components along with those from the Steam Trim Carton and install fittings and controls per Figure 2 . NOTE : The PA404A limit and siphon are not included as part of a standard KD boiler offering for ECT model boilers . NOTE : For SCT model boilers , mount controls & steam gauge per Figure 8 in the SC / SCT Installation , Operation & Maintenance Manual . Install longer gauge glass & fittings per Figure 2 above . PEEI LESS ® CAST IRON BOILERS PEERLESS HEATER COMPANY 231 NORTH WALNUT STREET • BOYERTOWN , PA 19512 - 1021 • PHONE 610 - 367 - 2153 www . peerless - heater . com THE PREFERRED HEATING CHOICE X8068 R0 ( 7 / 02 - 2.5M ) Printed in U . S . A .
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B - Cleaning the Series EC / SC Steam Boiler with Skim Tapping The following cleaning procedure shall be performed by a qualified service person . Refer to Figure 1 for location of skim tapping . 1 . Clean the boiler as described below no later than one week after the initial start up . Cleaning will be more effective if the boiler operates a day or two to loosen sediment and impurities in the system , 2 . The boiler must be cleaned to remove any accumulation of oil , grease , sludge , etc . that may be in the system . These substances can cause foaming and surging of the boiler water , producing an unstable water line and water carryover to the system . WARNING : CLEANING THE BOILER REQUIRES THE USE OF VERY HOT WATER AND CORROSIVE CHEMICALS , USE CARE WHEN HANDLING TO PREVENT INJURY . 3 . Connect a 1 - 1 / 2 " pipe nipple and shut off valve to skim tapping . 4 . Connect a 1 - 1 / 2 " drain line off of the skim valve , run to a point of safe discharge . 5 . Close all valves to the system . Provide a means of continuous fresh water to the boiler for the cleaning process . 6 . Open the skim valve . Fill the boiler until water begins to flow out of the valve . Shut off fill valve . 7 . Use common washing soda ( such as Arm and Hammer Super Washing Soda ) . Mix the soda with water in a 10 quart pail and pour into the boiler through the safety valve tapping . Mix a proportion of one ( 1 ) pound of washing soda for each 800 square feet EDR net boiler rating . CAUTION : DO NOT LEAVE THE BOILER UNATTENDED WHILE FIRING , TAKE GREAT CARE NOT TO ALLOW THE WATER LEVEL TO DROP BELOW THE BOTTOM OF THE GAUGE GLASS OR TO ALLOW FRESH WATER MAKEUP TO FLOW IN TOO FAST . THIS WILL AVOID THE POSSIBILITY OF CAUSING THE BOILER SECTIONS TO FRACTURE . 8 . Turn burner on and allow the boiler water to heat up to just below steaming ( 180 to 200 degrees F ) . Cycle the burner to maintain temperature during skimming . Do not allow the boiler to steam . Steaming mixes up the contaminants in the water instead of floating them at the surface . 9 . Open the make - up water valve to continuously feed water to the boiler . Allow water to flow out of the skim tapping . 10 . Continue skimming the boiler until the water flowing from the skim tapping flows clear . This will take some time , possibly several hours for a dirty system . 11 . After skimming is complete , close the skim valve and turn off the boiler . 12 . Close the make - up water valve and open the boiler drain valve . 13 . Drain the boiler completely . Refill and drain again one or two times to make sure all of the soda has been washed out . 14 . Restore piping to normal . Pipe a nipple and cap in the skim valve . 15 . NOTE : If the gauge glass becomes dirty again , this indicates more contaminants have worked loose in the system . Repeat the cleaning and skimming process as needed to clean the system . C - Wiring NOTE : Burner disconnect is not applicable on Series SC / SCT . pRIMARy CONTROL BURNER J / BOX R7184B BURNER / BOILER J / BOX H YDROLE _ IEL CG450 G ¢ BK L BK BK ( BY INST _ LU . £ R ) W - - JUMPER _ £ R ' _ SIq TCH ) ( BY INSTALLER ) CA { ) Ol $ C _ l [ ¢ Y [ ] STEAM WITH OR WITHOUT TANKLESS / HEATER SAFETY SMTQdES I / " I _ Y " , • 1 " _ . . . . o _ _ 4V 1M [ RMOSTAT - - LIN [ VOLTAG [ OPERATING CONTROL . . . . . . . . . . tOW VOLTA _ FOr ( 5TEAM W / TANKLESS H £ ATER ONLY ALt _ MRING MUST COMPty _ T _ I APPLIANOE COOLS , ORDINANCES AN0 R [ GULATIONS
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INSTALLATIONINSTRUCTIONS - SERIESSCand SCT Readcarefullybeforebeginningwork . Itwillsavetime . Studythe includeddrawings . Theequipmentshallbe installedin accordancewiththoseinstallationregulationsinforceinthe localareawherethe installationis to be made . Theseshall becarefullyfollowedin al ! cases . Authoritieshavingjurisdictionshallbe consultedbeforeinstallationsare made , A - ACCESSIBILITYCLEARANCES 1 - - To providefor reasonableconditionsof accessibilityfor servicing , the followingminimumclearancesarerecommendedbetweenthe boilerand adjacentwallsorotherappliances - - 24 " onthe rightside , 36 " on the leftside , and30 " inthefrontandrearof the boiler . B - AIR FORCOMBUSTIONANDVENTILATION 1 - - Becertainadequatefacilitiesareavailableto provideairfor satisfactorycombustionandventilation , 2 - - AppliancesLocatedin UnconfinedSpaces . a . Installationisn unconfinedspaceswithconventionacl onstructionandlargeareassuchas basementst , he supplyof airfor combustionandventilationcan usuallybeconsideredadequate . 3 - - ApplianceLocatedinConfinedSpaces a . If allair for combustionandventilationis to comefromwithinthe building ; twoopenings , onenearthe ceilingandonenearthe floorof the boilerroomshall beprovidedwiththe minimumfreeareaof each openingequalto 140sq.in . pergallonof oilburned . b . If allairfor combustionand ventilationis to comefromoutsidethe building ; twoopenings , onenearthe ceilingandonenearthe floorof the boilerroomshall beprovidedwiththe minimumfreeareaof each openingequalto 35sq . in . pergallonof oil burned . Ifductsareusedtoconveytheair , areasof 35sq.in . pergallonofoilburnedforverticadl uctsor70sq . in . pergallonof oilburnedfor horizontadl uctsareto beprovidedD . uctsshallhavethe sameareaasthefreeareaof theopeningstowhichtheyareconnected . C - SETrlNGUP BOILER 1 - - ModelsSC / SCT - 05andSC / SCT - 06areshippedina singleblock . Theboilersectionson modelsSC / SCT - 07thruSC / SCT - 10are shippedintwo parts . 2 - - Providea goodlevelfoundation , locatedas closeas possibleto the centerof the heatingsystemandto the chimneyorventsystem . The heatingsurfaceof theSC / SCTSeriesBoilersisdesignedto becleanedfromeitherthetop or leftofthe unit . Allowadequate clearanceon the leftof unit if servicingisto bedonefromthe side . CAUTION'T . HISBOILERIS NOTAPPROVEDFORUSEON COMBUSTIBLEFLOORING . 3 - - Placeeachblockof sectionson thefoundationwithnippleportsfacingeachother . RefertoFigure1 . 4 - - Cleannippleportswithanacceptablecleaningsolventto removeprotectivecoating . Makecertaintherearenoburrsaroundthe outsideedgeof the ports . 5 - - Spreada thincoatof Peerlessnipplesealerinthe nippleports . Neveron nipples . 6 - - Insertthe pushnipples . Makecertaintheyarecleanandfreefromburrs . 7 - - Applya thin coatof nipplesealerto the ropegroove . Pressthe Hi TempRopeinto ropegroove . 8 - - Arrangebothblockssothat protrudingnipplesentertheopenports . Caremustbetakento keepnipplesstraightandblocksaligned . 9 - - Insertdrawrodsthroughthe nippleports . Makecertainthatthe3 / 4 " draw rodis usedonthe largenipple . Payparticularattentionto the placementof the drawwashers . SeeFigure1 . 10 - - Beforestartingdraw , oilthe threadsandbetweenthe nutsandwashers . 11 - - Tightenthe hexnutsanddrawboilerevenlyuntilthe smallpadson eachsectionjusttouch , 12 - - Afterboileris drawn , removedrawrodsandcut5 " from6 ! / 4 " threadedend . Insertrodthruthe lugson eachendsectionandtighten the hexnutshandtight . 13 - Makeupwaterconnectiontoboilerandfill . Checkto makecertainthere isnoleakageat the nippleportconnection . 14 - - Removeflue collectorandHi TempRope ( Items8 and9 , Figure4 ) fromcarton . Lay rope ( Item8 ) ontopof boileragainstbead provided . Placefluecollectorontop of ropeandattachto boilerwith1 / 4 " - 20x 1 - 3 / 4s " tudsandnuts . Drawdownsnugly . OnModels05 and06 , removecombustionchanbercoverplate ( Item3 ) andattachflameobservationassembly ( item4 ) to CombustionChamber CoverPlate ( item3 ) . Removeanddiscardroundcast ironcoverdoorX - 1031locatedonthe insideof the coverplate . 15 - Removeclean - outcoverplatesandinsulation ( 7 ) . Eachclean - outcoverplateis attachedto the boilerby usingtwocarriagebolts , nutsandwashers ( 6 ) . Installthecarriageboltsintothe notchat the top andbottomof eachclean - outopening , thensecurethemwith a flatwasherandsteelnutas shownin Figure2 lockingtheminto place . Pressthe clean - outplatewith insulationoverthe protruding carriageboltsuntilthe boltspunchthroughthe insulationso a flatwasherandbrassnutcan beinstalled . Tightendownnutssnugly compressingthe insulationto forma goodseal aroundthe clean - outopening .
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FRONT SPLIT REAR SPLIT LARGE BLOCK ASSEMBLY BLOCK ASSEMBLY _ PUSH NIPPLE HI TEMP \ ) RAW - UP WASHER DRAW - UP WASHER \ ROPE X - 100t 3 / 4 " DRAW ROD DRAW - UP WASHER LUGS X - 1009 - UP WASHER X - 1009 I / 2 " DRAW ROD SMALL PUSH NIPPLE _ FIGUREI SIDE CLEAN - 0UT COVER PLATE W / INSULATION FLAT WASHERS HEX . x BRASS HEX . NUT CARRIAGE BOLT 5 / 16 UNO X 1 3 / 4 . " Le . FIGURE2 2
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D - JACKETASSEMBLY 1 - - Referto Page4 for explodedview . Attachthe backjacketpanel ( 19 ) to bossesonmiddleof backsectionwithtwo1 . 4 " x % " truss headmachinescrews ( 20 ) provided . The backpanelhas two % 0 " dia . holescloseto the centerof the panel . 2 - - Locateceramicblanketlinerandinstallincombustionchamberfloor , placingbackedgeof blanketagainstbottomedgeoftargetwall . 3 - - Placethefrontjacketpanel ( 23 ) onthe blockandattachthecombustionchambercoverplateassembly ( 3 ) . 4 - - Attachthe rightsidejacket panel ( 22 ) to thefrontandbackpanelswithsheetmetalscrews . NOTE : ONSERIESSCTBOILERS , THEOPTIONALWATERHEATER ( 17 ) MUSTBEINSTALLEDBEFORETHELEFTSIDE JACKETPANELISATTACHED . 5 - - Ifwaterheateris used , removeknockout pieceinleftsidejacketpanel ( 21 ) beforeinstalling . Attachleftsidejacketpanelinthe samemanneras the rightside panel . 6 - - Attachthe top panel . The top is madein twopieces ( 24 & 25 ) . Jointhe twopiecestogetherwithsheetmetalscrews . Securetop panelto front , backandsideswithsheetmetalscrews . 7 - - WaterHeater a . SeriesSC WaterBoilers - Seechartbelowfor ratingsandusage . InstallWaterHeater ( 13 ) when required , inlargeopeninginfrontof boiler . SeeFigure3for suggestedpiping . b . SeriesSCTSteamBoilers - Seechartbelowfor ratings . InstallWaterHeater ( 17 ) when requiredinlargeopeninginbacksection . SeeFigure3Afor suggestedpiping . TanklessWaterHeaterRatings BOILER MODEL HEATERNO . * HEATERNO . * HEATERNO . * HEATERNO . NUMBER X - 1020 - G . PM . X - 1021 - G . P . M X - 1022 - G . P . M X - 1082 ( Steam ) SC / SCT - 05 4.75 - - - - 4.75 SC / SCT - 06 5.0 6.0 - - 5.00 SC / SCT - 07 5.25 6.5 - - 5.25 SC / SCT - 08 5.5 7.0 10.0 5.50 SC / SCT - 09 5.75 7.5 11.0 5.75 SC / SCT - 10 6.0 8.0 12.0 6.00 Waterheaterratingsarebasedonintermittendt emand - - 40 ° Fto 140 ° Fwith200 ° Fboiler watertemperature . * Usedonwaterboilersonly . Whenwaterheateris not employed , coverthe heateropeningwithcoverplate ( 12 ) or ( 16 ) . BESURERUBBERGASKETIS IN PLACEBETWEENCOVERPLATEOR WATERHEATERPLATEANDBOILERSECTION . HIGH TEMPERATURE _ _ M _ R _ U _ HOT WATER _ HEATER _ T _ E MIXED TAPPING _ 4 , , oo _ moL CONTROL WATER MIXER FIGURE3 FIGURE3A DANGER : Installmixingvalveinhotwatersupplypiping . Watertemperatureover125 ° Fcancauseseverebumsinstantloyrdeathfromscalds .
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" - - - 22 _ _ _ . : 10 \ 1 2 6 26
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SERIESSC / SCT ModelNo . SC , / SCT . - _ SCiSCT . . S09C Item No . Description PartNo . SCiSCT - 05SCiSCT - 06SCiSCT - 07 _ - IO 1 BlockAssembly - SC - 05ModelOnly X - 1096 X BlockAssembly - SC - 06ModelOnly X - 1096 - 1 X BlockAssembly - SCT - 05ModelOnly X - 1097 X BlockAssembly - SCT - 06ModelOnly X - 1097 - 1 X x FrontSplitBlockAssembly SC - 1018 X x FrontSplitBlockAssembly SC - 1018 - 1 BackSplitBlockAssembly SC - 1019 X X BackSplitBlockAssembly SC - 1019 - 1 X x BackSplitBlockAssembly SC - 1019 - 2 BackSplitBlockAssembly ( SCTModel ) SC - 1020 X BackSplitBlockAssembly ( SCTModel ) SC - 1021 - 1 X X BackSplitBlockAssembly ( SCTModel ) SC - 1021 - 2 2 TargetWall X - 3019 X X X X X X 3 CombustionChamberCoverPlate X - 1060 - 1 X X X X X X 4 FlameObservationAssembly SC - 1012 X X X X X X X 5 5 / 16 " - 18x 2 - 1 / 4 " Studsw / Nuts - 5 Req'd X - 1061 X X X X X X X 6 5 / 16 " - 18x 1 - 3 / 4 " CarriageBoltw / Nut X X X X 7 SideClean - OutCoverPlate X - 1085 X X X X X X 8 HighTemp . Rope1 / 2 " Dia . 64 " Long X HighTemp . Rope1 / 2 " Dia . 72 " Long X HighTemp . Rope1 / 2 " Dia . 80 " Long X x HighTemp . Rope1 / 2 " Dia . 88 " Long X HighTemp . Rope1 / 2 " Dia . 96 " Long HighTemp . Rope1 / 2 " Dia . 104 " Long X 9 FlueCollectorandDamperAssembly SC - 5005 - 5 X FlueCollectorandDamperAssembly SC - 5005 X FlueCollectorandDamperAssembly SC - 5005 - 1 X X FlueCollectorandDamperAssembly SC - 5005 - 2 X FlueCollectorandDamperAssembly SC - 5005 - 3 X FlueCollectorandDamperAssembly SC - 5005 - 4 I X X X 10 1 / 4 " - 20x 1 - 3 / 4 " Studsw / Nuts - 2 Req'd X - 5000 X X X 11 RubberGasket X - 1023 X X . . . . . _ ' X X X X X i X X TanklessCoil ( OptionalWaterOnly ) X - 1020 X X ' : , X X ! X X i F TanklessCoil ( OptionalWaterOnly ) X - 1021 X ! X X X i X _ . _ CoverPlate X - 1059 X X X t X X X _ TanklessCoil ( OptionalWaterOnly ) X - 1022 i X ; X 14 3 / 8 " - 16x 3 / 4 " HexHd . CapScrews - 6 Req'd X X X X 15 RubberGasket ( SCTModels ) X - 1083 X x , x X X X X X X 16 CoverPlate ( SCTModels ) X - 1084 _ X X : X X X X 17 I TanklessHeater ( OptionalSCTModels ) X - 1082 X i X I X 18 [ 3 / 8 " - 16x3 / 4 " HexHd . CapScrews - X X X X X X ( SCTModels ) - 8 Req'd X X X 19 BaB [ ack - - - - - - - - - - - - _ acke ! Panel SC - 6003 _ X _ X _ X 5
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SERIESSC / SCT ModelNo . SCPaCT . . 0S8OSOT . . 09SC Item No . Part No . SCiSCT - 05SC / SCT - 06SCiSCT - 07 / SCT - 10 Description X X 20 1 / 4 " - 20x 3 / 8 " TrussHd . Mach . Screws - X X X X Cad . Plate - 2 Req'd SC - 6001 - 5 21 LeftSideJacketPanel X X SC - 6001 LeftSideJacketPanel LeftSideJacketPanel SC - 6001 - 1 X X LeftSideJacketPanel SC - 6001 - 2 X LeftSideJacketPanel SC - 6001 - 3 X LeftSideJacketPanel SC - 6001 - 4 22 SC - 6002 - 5 X RightSideJacketPanel X SC - 6002 RightSideJacketPanel X SC - 6002 - 1 RightSideJacketPanel X SC - 6002 - 2 RightSideJacketPanel SC - 6002 - 3 X RightSideJacketPanel X SC - 6002 - 4 RightSideJacketPanel SC - 6000 X X 23 FrontJacketPanel X X i 24 SC - 6005 - 5 i X RightTopJacketPanel ix x SC - 6005 X RightTopJacketPanel SC - 6005 - 1 X i RightTopJacketPanel I i SC - 6005 - 2 X RightTopJacketPanel X SC - 6005 - 3 RightTopJacketPanel SC - 6005 - 4 X RightTopJacketPane ] I 25 SC - 6004 - 5 , X LeftTop JacketPanel SC - 6004 i X LeftTop JacketPanel l ! SC - 6004 - 1 LeftTop JacketPanel x I SC - 6004 - 2 X LeftTop JacketPanel SC - 6004 - 3 X LeftTop JacketPanel SC - 6004 - 4 x LeftTopJacketPanel 26 CeramicBlanketLiner - 50846 ! 14 " x141 / " 2 14 " x18 % " I I , CeramicBlanketLiner - 51038 14 " x23 " 14 " x271 / ' 4 14 " x311 / ' 2 14 " x35 % " I Sizesmustbe cattofit . * Sizemustbecutto fit .
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E - PIPING DONOTPIPEBOILERUNTILAFTERJACKETIS INSTALLED . 1 - - See Figures5 and6for suggestedpipingto the boiler . 2 - - Makeupcoldwatersupplyconnectionto the boiler . 3 - - Installpressuregaugeor theraltimeterintappingprovided . SeeFigure7 . 4 - - Plugall opentappingsinthe boilerandfill withwater . Pressurizeboilerto 45 PSIGfor 30 PSIGsectionsand75 PSIGfor 50 PSIG sections . Checkto makecertainthat alljointsandfittingsare watertight . 5 - - Afteralljointsandconnectionshavebeenprovenwatertight , removecoldwatersupplyandplugsfromalltappingsthatareto be used . SeeFigure7 for tappinglocations . NOTE : IFTHISBOILERANDDISTRIBUTINGSYSTEMIS USEDINCONJUNCTIONWITHA REFRIGERATIONSYSTEM , THE CHILLEDMEDIUMSHALLBEPIPEDIN PARALLELWITHTHEBOILERANDTHEPROPERVALVESAPPLIEDTO PREVENTTHECHILLEDMEDIUMFROMENTERINGTHEBOILER . WHENTHEBOILERIS CONNECTEDTO HEATING COILSLOCATEDINAIR HANDLINGUNITSWHERETHEYMAYBEEXPOSEDTO REFRIGERATEDAIRCIRCULATION , THEBOILERPIPINGSYSTEMMUSTBEEQUIPPEDWITHFLOWCONTROLVALVESOR OTHERAUTOMATICMEANS TO PREVENTGRAVITYCIRCULATIONOFTHEBOILERWATERDURINGTHECOOLINGCYCLE . Boiler ModelNo . Risers Header Equalizer SC / SCT - 05 2 - 2 " 3 " 11 _ " SC / SCT - 06 2 - 2 " 4 " 1W ' SC / SCT - 07 2 - 21 / 2 " 4 " l _ . & " SC / SCT - 08 2 - 21 / 2 " 4 " 11 / 2 " SC / SCT - 09 2 - 21 / 2 " 4 " 2 " SC / SCT - IO 2 - 21 , ' _ and 1 - 2 " 4 " 2 " The returnfromsystemshouldalwaysenterequalizerthrough HartfordLoop , 2 " to 4 " belownormalwaterline . STEAM FIGURE5 Pipethesupplyandreturninoneof twoways : 1 . Pipethe supplyfromthe topof the rearsectionandreturnto the bottomof thefrontsection . Usethe3 / 4 " tappingin thetop of the backsectionfor airelimination . 2 . As an acceptablealternative , pipethe supplyfromthetop of the frontsectionandreturnto the bottomof the rearsection . Provide an aireliminationmeanswithinthe supplypiping . HOTWATER FIGURE6
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F - OIL BURNERINSTALLATION 1 - - Theoilburneris suppliedwitha mountingflangefixedinposition . 2 - - Mountthe burnerto the combustionchambercoverplate ( 3 ) withfour5 / 16 " - 18x 1 " studsandnutsprovidedB . E SUREHITEMP GASKETIS BETWEENTHE BURNERMOUNTINGFLANGEANDTHECOMBUSTIONCHAMBERCOVERPLATE . 3 - - OilBurnerSpecifications . BECKE'n'BURNER CARLINBURNER Boiler Burner * Nozzle Pressure Boiler Burner * Nozzle Pressure ModelNo , ModelNo , Size Lbs , ModelNo . ModelNo . Size Lbs . SC / SCT - 05 CF - 500 2.5060 ° B 140 SC / SCT - 05 201CRD 2.5060 ° B 140 SC / SCT - 06 201CRD 3.00600B 140 SC / SCT - 06 CF - 500 3.00600B 140 SC / SCT - 07 20t CRD 3.2545 ° SS 150 SC / SCT - 07 CF - 800 3.25450P 150 SC / SCT - 08 201 CRD 3.7545 ° SS 140 SC / SCT - 08 CF - 800 3.7545 ° P 140 SC / SCT - 09 CF - 800 4.00 30 ° P 150 SC / SCT - 09 201CRD 4.0045 ° B 150 SC / SCT - 10 CF - 800 4.50 30 ° P 150 SC / SCT - 10 301CRD 4.5045 ° B 150 GORDON - PIAI - rGASOR COMB . GAS - OILBURNERS POWERFLAMEGASORCOMB . GAS - OILBURNERS Boiler GasBurner Gas - Oil * Nozzle Pressure Boiler GasBurner Gas - Oil * Nozzle Pressure ModelNo . ModelNo . ModelNo . Size Lbs . ModelNo . ModelNo , ModelNo . Size Lbs . SC / SCT - 05 $ 4.2 - G - 03 $ 4,2 - GO - 03 1.7590 ° B 300 SC / SCT - 05 CR1 - G - 10 CR1 - GO - 10 1.75900S 300 SC / SCT - 06 $ 4.2 - G - 03 $ 4.2 - GO - 03 2.2560 ° B 275 SC / SCT - 06 CR1 - G - 10 CR1 - GO - 10 2.2590 ° S 275 SC / SCT - 07 $ 4.2 - G - 03 $ 4.2 - GO - 03 2.5060 ° B 275 SC / SCT - 07 CR1 - G - 10 CR1 - GO - 10 2.5090 ° S 275 SC / SCT - 08 $ 4.2 - G - 03 $ 4.2 - GO - 03 2.7560 ° B 275 SC / SCT - 08 CR1 - G - 10 CR1 - GO - 10 2.7590 ° S 275 SC / SCT - 09 CR1 - G - 10 CR1 - GO - 10 3.0090 ° S 275 SC / SCT - 09 $ 4.2 - G - 03 $ 4.2 - GO - 03 ( 2 ) 1.5060 ° B 275 SC / SCT - 10 CR1 - G - 10 CR1 - GO - 10 3.50900S 250 SC / SCT - 10 $ 4.2 - G - 03 $ 4.2 - GO - 03 ( 2 ) 1.7560 ° B 250 * NozzleSize : B = Delavan P / SS = Hago S = Steinen 4 - - Forother informatiopnertinentto the oil burnerinstallation , seethe InstallationManualaccompanyingthe burner . G - CONTROLS 1 - Applycontrolsasfollows : a . WaterBoilers : Installthe limitor operatingcontrol , temperature & pressuregaugeandthe pressurereliefvalve . SeeFigure7for properlocation . b . SteamBoilers : Installpressuregauge , gaugeglasstrim andsafetyvalve . SeeFigures7 and8 . For applicationof lowwater cut - oftsee Figure11 . Forpumpcontrolor feederapplicationsee Figures9 and10 . Caution : Pipethe dischargeof the popsafetyvalveor reliefvalveto preventinjuryinthe eventof pressurerelief . Suggestdischarge to bepipedto drain . Pipefull sizeof outlet . H - CHIMNEYANDBREECHING 1 - The SeriesSC / SCTboilersaredesignedforforceddraftfiringonly . The boilerandflue outletsizesproducethe requiredpressuresin the combustionchamberwhen operatingat boilerratingT . he boilerbreechingshouldbethefull sizeof theflue collectoroutletand maybe attachedto aconventionacl himneyor a shortvent . A 3 ft . minimumheightof ventabovethe roofis required . DONOT SIDEWALLVENTBOILER . 2 - - Whenattachedto a conventionacl himneyanexcessdraftmaybeavailable . If suchis the case , adraftregulatorshouldbeinstalled andsetto provideminimumdraft . The dampersuppliedshouldthen besetto providea maximumpressureof + 0.1 " watercolumnor minimumof 0 " watercolumnat the outletof the fluecollector . Lockdamperin placebyuse of setscrews . DA _ pEF I R £ _ ULATOR MAX * 0 _ We _ _ AFT CC _ LECT _ Ifthe boilerbreechingis attachedto a non - conventionaclhimneyor shortstackthe breechingalsowill bepressurized . It shouldbe pointed outthat unsealedconventionasl mokepipemustnotbe usedas it will leakflue gasesat theseamsandjoints . Whenconstructinga sealedor weldedbreechingfor the SeriesSC / SCTboilers , it is obviousa meansof disconnecting ( Flange ) mustbe providedto facilitateremovalof the flue collectorfor verticalcleaningof the boilerandchimney . 8
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FRONT FIGURE7 DIMENSIONS Distance Dist . Betw . Top Length Rearof BoilerBurner Number Jacket Jacket to Fire Jacketto c / I Flue Between FrontTap . Unit Number of Width Length Floor Box of Flue Size Tappings & Tap . Inter . WUorSU Sections " A . . . . B . . . . C . . . . D . . . . E " " F . . . . G . . . . GI " 7 " 17 _ " - - SC / SCT - 05 5 221 / 2 " 24r / 2 " 431 / _ " 18 % " 131 / 4 " 9 " 21 % " - - SC / SCT - 06 6 221 / 2 " 28 % " 431 / 4 " 22 % e " 15 % " 9 " 257 / e " - - SC / SCT - 07 7 22 ! . _ " 327 / 8 " 43 ! / 4 " 26 ¾ " 171 / 2 " 9 " 30W ' - - SC / SCT - 08 8 221 , _ " 371 / _ " 43 ! / 4 " 301S / i's 19 % " 10 " 34 ¾ " - - SC / SCT - 09 9 221 / 2 " 41 % " 431 / 4 ' 35Ve " 213 / . ' _ SC / SCT - IO 10 221 / 2 " 45 % " 43 " ; / 4 " 39sAe " 23Ve " 10 " 38 % " 171 , _ e " * Note : Maximum burnerlength : Beckett = 131 , , " _ , GordonPiatt $ 4 = 27 " , Gordon Piatt R = 30 " , Power FlameC = 34 " , Power FlameJ = 24 ' , WebsterJB - 1 = 30 " , TAPPINGLOCATIONS Size Location N . P . T . Steam Water H ¾ " LowLimitControl N / A I ¾ " Press . Gauge , Oper . N / A Cont . & LimitCont . J ¾ " N / A OperatingControl K ¾ " N / A LimitControl L I , _ " N / A Theraltimeter M W ' GaugeGlass & N / A LowWaterCutoff N 2 " Return OptionalReturn 0 ¾ " SecondaryProbe SecondaryProbe LowWaterCutoff LowWaterCutoff P - - SafetyValve ReliefValve Q 1V4 " on05 - 06 Return Return 1W ' on 07 - 10 R ¾ " DrainCock DrainCock S ¾ " N / A OptionalHighUmit T ¾ " PrimaryProbe N / A LowWaterCutoff
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STEAM 3 / 4 " PLUG REDUCING TEE 3 / 4 " , S " NIPPLE 314 ° " 4 " NIPPLE 3 / 4 " PLUGS NOTES . ' RIGHT HAND SHOWN LEFT HAND OPPOSITE ALL FITTINGS MALLEABLE STEAMGAUG _ PRESSURETROLS PIPINGARRANGEMENT 3 / 4 " 11 / 4 ° HEX BUSHING 3 / 4 ° CROSS 314 " , 6 ° NIPPLE = EDUCING TEE PRESSURETROL STEAM GAUGE I / 4 " , 3 ° BRASS NIPPLE 3 / 4 % 4 " NIPPLE - - 3 / 4 " ° 3 " NIPPLE 314 " = 3 / 4 " ° W4 " REDUCING TEE 3 / 4 " CR0SS 3 / 4 " PLUG 3 / 4 " PLUG 3 / _ = 5 " NIPPLE STEAMGAUGE / PRESSURETROLS NOTE : ALTERNATEPIPINGARRANGEMENT ALL FITTINGS MALLEABLE FIGURE8 10
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• . UNION I'CROSS S NIPPLE " x IO " NIPPLE JACKET PANEL , PECIAL TAPPED INTERMEDIATE SECTION # I IIlllq I INSTALL I'BLOW - OFF VALVE I * x , 4 " N _ PI : : ' LE UNION FLOOR NOTES : CONNECTING FITTINGS SHOWN ON THIS DRAWING ARE TO BE SUPPLIED BY INSTALLER ON COMB FEEDER CUT - OFF MODELS THE BURNER CUT - OFF LEVEL IS 23 / 4 " BELOW NORMAL WATER LINE FIGURE9 11
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IPPLE LEVEL MARA ON CASTING r , INSTALL I _ IBLOW - OF'F VALVE I " X 3 " NIPPLE I " G . J . UNION I " X 4 " NIPPLE NOTE : CONN _ CTING FITTINGS SHOWN ON THIS DRAWING ARE T _ E ) _ SUPPLIED BY INSTALLER FIGURE10 12
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McD & M # 67PE - 2 LOWWATERCUT - OFF B _ - CUT _ F LEVEL WL PIPE CONNECTION FIGURE11 I - WIRING 1 - - Allalectricalwiringshallbe doneinaccordancwe iththeNationaEl lectricaCl edeandLocalRequirements . 2 - - ForrecommendewdiringS , ee Figures12and13 . 3 - - Forcompleteinformatioonnservicinagndadjustmenotfcontrolsr , efertotheattachedcontrosl pecificatiosnheets . NOTE : SinglePoleSwitchesincludintghoseofSafetyControlsorProtectivDeevicesshallnotbewiredin a groundedline . J - CLEANINGHEATINGSURFACES NOTE : BOILERISTO BECLEANEDATLEASTONCEAYEAR . THISBOILERMAYBECLEANEDFROMTHELEFTSIDEORTOP . 1 - - Turnoffallelectricapl owertoboilerbeforebeginningcleaningoperation . 2 - - If cleaningfromtheside , removeleftjacketpanelandsideclean - ouctoverplates . 3 - - If cleaningfromthetop , removeflue pipe , lefttopjacketpanelandfluecollector . 4 - - Brushthe fluepassageswitha wirebrushto removeallscaleorseatfromtheseheatingsurfaces . 5 . - - Removeanyscaleorsootfromthefireboxbymeansofvacuumcleaningorany otheravailablemoans . NOTE : THEOILBURNERMUSTBEREMOVEDTO FACILITATETHISOPERATION . 6 - - Installolean - outcoversorfluecollectorb , esurethegasketorropesealisingoodconditionif , not , replace . 7 - - Instaljlacketpanelsandflue pipeas required . 13
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HY C _ EVIL . G _ O'P / _ 0 " P 1 _ 6C - Typ _ LWCO Ap ' _ . _ . KTK _ * _ - - q : _ ) cm @ . _ _ _ WiTH TA _ LESS _ ATI : R , r - - - v - - @ OR _ ULA _ r _ . . . . . . . . . . LOW V _ L T _ E . . . . 1 : : © FORCED HOT _ ALL WIRING k _ T ( _ fq _ y TH APP _ I _ J _ J _ LE WATER Withor Without Tankless WaterHeater FIGURE12 _ O _ " S , CRDIk _ ANC £ S . ANO _ - _ M ( - IJO _ N _ t • & MILLER _ Rlr _ p ' _ - _ HyOR _ EVC , _ L 650 - W 5 _ O - p _ - TYF _ L _ K _ O r _ PPLk ' _ ATION _ LOW " / # AT T - F W _ IT [ _ X - - X LI " _ V _ 5OH ? . ` _ _ _ _ _ _ WithorWithout TanklessWaterHeaterand . k . GRAV / TYHOTWATER FIGURE13 14
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K - SERIES SC AND SCT RATINGS VenP Net I - B - R Ratings I - B - R Burner Capacity4 Gross UnitNumber Oil Gas I = B = R BoilerBurner Water _ Steam3 Steam G . P . H . M , B . H . Boiler Size HeightFeet Output M . B . H , M . B . H , HP Inches ( Min . ) WUorSU M . B . H . Sq . R . Inpu _ t Input 298 257 1071 3.00 433 10.2 7 3 SC / SCT - 05 343 SC / SCT - 06 405 352 304 1267 3.50 505 12.1 9 3 462 402 347 1446 4.00 577 13.8 9 3 SC / SCT - 07 519 451 389 1621 4.50 649 15.5 9 3 SC / SCT - 08 SC / SCT - 09 575 500 431 1796 5.00 722 17.2 10 3 SC / SCT - 10 632 550 474 1975 5.50 794 18.9 10 3 Apply Prefix " O " for Oil - " G " for Gas - " GO " for Gas - Oil Ratings based on 12 1 / 2 % CO 2 Oil 1 Burner input based on No . 2 fuel oil with a heating value of 140,000 Btu per gallon . 2 Net I = B = R water ratings based on an allowance of 1.15 . 3 Net i = B = R steam ratings based on an allowance of 1.333 . 4 Consult factory before selecting a boiler for installations having unusual piping and pickup require - ments , such as intermittent system operatione , xtensivepiping systems , etc . 5 A 3 foot minimum height of vent above the roof is recommended . For any unusual venting conditions , consult your local building code or authority . 15
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Series SC / SCT Gas / Oil Boilers Oil , Gas 8 Installation , Operation r : Maintenance Manual TO THE INSTALLER : This manual is the property of the owner and must be affixed near the boiler for future reference . TO THE OWNER : This boiler should be inspected annually by a Qualified Service Agency , _ _ O _ Gmember member gama PEERLESS " CAST IRON BOILERS PEERLESS HEATER COMPANY 231 NORTH WALNUT STREET • BOYERTOWN , PA 19512 - 1021 • PHONE 610 - 367 - 2153 www . peerless - heater corn THE PHEFEHRED HEATING CHOICE © 2002 Peerless Heater Company SC8000 R9 ( 6 / 02 - 2M ) Printed in U . S . A .