Weil-McLain CGA 2 Series Installation And Maintenance Manual Download Page 1

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Summary of Contents for CGA 2 Series

Page 1: ... Parts Thismanualmust onlybe usedbya qualifiedheatinginstaller service technician Before Installing read all instructions including this manual and any related supplements Perform steps in the order ven Failure to comply could result in severe personal injury death or substantial property damage Part Number 550 142 779 0712 ...

Page 2: ...o dose The control module indicatorlights shownormal sequence when the lights are onsteady When a problem occurs the control module flashes combinations oflights to indicate the most likely reason for the problem See page 49 for details Tr41nsfonner The control transformer reduces line voltage to 24 volts for the gas valve and limit circuit Draft hood The draft hood provides a minimum draft for th...

Page 3: ...CGa Series 2 Gas Fired Water Boiler Boiler Manual CGa Series 2 Gas Fired Water Boiler Part Number 550 142 779 0712 3 ...

Page 4: ...tes 66 67 Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life ofthe product IAWARNINGI lACAUTlONI NOTICE Indicates presence of hazards that will cause severe personal injury death or substantial propertydamage Indicates presence of hazards that can cause s...

Page 5: ...ly fail to shut off do not turn offor clisconnect electrical supply to circulator Instead shutoffthegassupplyata location external to the appliance Do not use this boiler ifany part has been under wa ter Immediately call a qualified service technician to inspecttheboilerand to replaceanypartofthecontrol system andanygascontrol thathas been under water Boiler water Do not use petroleum based cleani...

Page 6: ...e following Check for nearby connection to System water piping Venting connections Gas supply piping Electrical power Check area around boiler Remove any combustible materials gasoline and other flammable liquids or other contaminants IAWARNINGI Failureto keepboilerareadearandfree ofcombustiblematerials gasoline and other flammable liquids and vaporscan result in severe personal injury death or su...

Page 7: ...e and reduced boiler life Required MINIMUM clearances Fig 1b IAWARNINGI Never Install the boller In a space with clear ances lessthan theminimumclearances shown In Figure 1b Failure to complycan resultinsevere personal injury deathorsubstantial propertydam age and reduced boiler life 1 Hot water pipes at least h Inch from combustible material 2 Single wall vent pipe at least Glnches from combustib...

Page 8: ...st fans fireplace dampers andany other gas burning appliance to their previ ous conditions ofuse Any improper operation of common venting system should be corrected so the installation conforms with the National FuelGas Code ANSI Z223 1 latest edition Correct by resizing to approach the minimum size as determined using the appropriate tables in Part II of that code Canadian installations must comp...

Page 9: ...ry areas and establishments Permanent wave solutions Swimming pools Chlorinated waxes cleaners Metal fabrication olants Chlorine based swimming pool chemicals Beauty shops Calcium chloride used for thawing Refrigeralion repair shops Sodium chloride used for water softening Photo processing plants Refrigerant leaks Auto body shops Paint or varnish removers Plastic manufacturing plants Hydrochloric ...

Page 10: ...nings directly to the outside sized and located per Figure 3 Figure 4 or Figure 5 2 Buildings oftypicalconstruction should provide adequatecombustion air from natural infiltration so additional air openings to the building are not required 3 See Figure 2 Provide two openings through the interior wall within 12 inches of the ceiling and the floor sized per Figure 2 Two openings Air supply directly ...

Page 11: ...an shown in Figure Ia page 7 To determine if the space is large enough to qualify Add the total input ofaJI appliances in MBH l OOO s of Btuh Multiply this number times 50 to determine minimum room volun1e Example For a total input of 100 MBH 100 000 Btull mininlum volun1e is 50 x 100 5 000 cubic feet At a ceiling height of 8 feet the space must have at least 5 000 8 625 square feet 25 feet x25 fe...

Page 12: ...ove 2 000 feet contact your Weii Mclain sales office for details death or substantial propertydam age 3 Level and straighten burners Burners must be properly seated in slots in burner rest with theiropen ings face up Main burner orifices must inject down center ofburner Failure to properly seat burners will result in severe personal injury death or substantial propertydam age 4 Reinstall access pa...

Page 13: ...ing the fill Valve and nipple are not included with boiler Fill and pressure test 1 Open theshutoffvalvesyouinstalled onsupplyand return connections 2 Slowly open boiler drain valve and fresh water supply to fill boiler wid1 water 3 When water flows from shutoffvalves close boiler drain valve Part Number 550 142 779 0712 4 Close shutoffvalves 5 Slowly reopen boiler drain valve until test pressure ...

Page 14: ...INGI 14 CSAcertification will become void Ruegas spillageand carbon monoxide emissions will occur causing severe personal injury or death_ Figure 6 Install spill switch D fth ood_ Figure 7 Spill switch with wire harness Spill switch w ire harness Damper harness knockout Prepare boiler install vent piping LQng horizontal vent coJmector excessive number of elbow or tees or other obstructions that re...

Page 15: ... damper hole Hold open switch Effikal onlyI Install vent damper so that switch is visible and accessible to user Part Number 550 142 779 0712 S932S Installation I Install vent damper horiwntally or vertically as shown in ventdampermanufacturer s instructions Vent dan1per mustbe installed so that it serves only one boiler and so damper blade indicator is visible to the user See Figure 8 2 Screws or...

Page 16: ...e personal injury death or substantial property damage Test the operation of the valveafter filling and pressurizing system by lifting the lever Make sure the valve discharges freely Ifthe valve fails to operate correctly replace it with a new reliefvalve Circulator The circulator is shipped loose wiring pre attached to boiler to allow you to locate it either in the return or supply piping as desi...

Page 17: ...ping up towards tank I inch per 5 feet ofpiping IAWARNINGI Use Figure 9 or Figure 10 only for single zone systems designed for return water at least 130 F For systems with low return water temperature possible such as converted gravity systems and radiant heating systems refer to the special piping suggestions of pages 20 25 Failure to preventlowreturn watertemperature to theboilercouldcausecorros...

Page 18: ...ing boiler flow rate without affecting primary circuit flow rate IfFigures 13 or14cannotbeused usetheboiler bypass pipingshown in Figure 15 or Figure 16 on page23 You can also use the pifingshown in Figure 17 on page 25 system bypass i thereduced flow rate in the heating system will not cause heat distribution problems IAWARNINGI Failure to prevent low return water temperature to the boiler could ...

Page 19: ... the expansion tank 11 Fill valve 3 System or zone circulator 5 Zone valve 6 Drain valve 9 Reliefvalve lAWARNING 12 Diaphragm type or bladder type expansion tank if used For dosed typee pansion tank pipe from top ofairseparator to tank fitting as in Figure 10 page 17 13 Air separator and automatic vent if used Note that the fill valve must always be connected to the exyansion tank regarclless of l...

Page 20: ...e adjustment Figures 13 and 14 only I Set the valves while thesystem iscool settingfor the coldest expected water temperature usuaUy 60 F since the system will often drop to room tempera ture berween cycles 2 Start with valve 7a fully closed and 7b fully open 3 GraduaUyopenvalve7a while closingvalve7buntil the temperature at gauge 8 reads I30 Fwhen gauge 4a reads 60 F 4 Note that valve 7a regulate...

Page 21: ...9 0712 Figure 14 Primary secondary piping Zoning with zone valves r z c NE 2 L t T _J I ZONE 1 I I i I I 1 I fD t _ e C ld watet fill 10 Automatic air vent with diaphragm rype expansion tank or connect to tank fitting closed rype expan sion tank DO NOT use an automatic air vent when using closed type expansion tank It would allow air to leave the system causing waterlogging of the expansion tank 1...

Page 22: ...ng Gauge 8 is required on aU systems to assure reliable adjustment of the bypass valves The boiler mounted temperature pressure gauge can be used if a separate temperature gauge is not installed Valve adjustment I Start with valve 7a fully closed and 7b fully open 2 Gradually open valve 7a while closing valve 7b until the temperature atgauge8 reads 60 F higher than gauge 4a A minimum 60 F temperat...

Page 23: ...Figure 16 Boiler bypass piping Zoning with zone valves Alternative to primary secondary piping Figures 13 and 14 r ZONE 2 t f L 1 1 ZONE 1 6 I I 10 Automatic air vent with diaphragm type expansion tank orconnect totank fitting closed typeexpansion tank DO NOT use an automatic air vent when using closed type expansion tank It would allow air to leave thesystem causingwaterlogging oftheexpansion tan...

Page 24: ... of the system and reduced heat from radiators near the end ofthe system Valve adjustment I Start with valve 7a fully closed and 7b fully open 2 Graduallyopenvalve7a while closingvalve7buntil the temperature at gauge8 reads atleast 130 F at all times 3 Valve7a regulates theamount ofboilersupplywater mixed wid1 return water Valve7b causesa pressure drop in the system needed to balance flow through ...

Page 25: ...n tank 11 Fill valve 12 Diaphragm type or bladder type expansion tank ifused For closed type expansion tank pipe from top of air separator to tank fitting as in Figure 10 page 17 Water piping refrigeration systems Figure 18 Piping refrigeration systems System C l I Expansion tank supply I L t Shut off Circulator valve Water chiller t D Strainer Check Boiler El l valve EIEI System t return eaii nci...

Page 26: ...e does notblock gas flow IA WARNINGl Failure to apply pipe dope as detailedabove can result in severe personal injury death or substantial property damage Ta ble 4 Pipe capac y for 0 60 s pecific gravity natural gas Gas pipe Capacity of pipe for pipe s ize of length Capacity in cubic feet gas per hour feet 1 f2 1 1 1 1 12 10 132 278 520 1050 1600 20 92 190 350 730 1100 30 73 152 285 590 860 40 63 ...

Page 27: ...AC A Hot n Neutral the wiring diagram shown in Figure 25b page 37 For other devices refer to manufacturer s specifica tions Wiring diagram on boiler gives setting for control module andgasvalve Also see instructions with thermostat DHW I Connect DHW aquastat as shown in wiring below Economy function isn t utilized with DHW input Junction box furnished I Connect 120 VAC power wiring Figure 20 2 Fus...

Page 28: ...e to boiler will occur resulting in substantial property damage Eliminate all system leaks Continual fresh makeup water will reduce boiler life Minerals can build up in sections reducing heat transfer overheating cast iron and causingsection failure Verify water chemistry Consult local water treatment companies for unusually hard water areas above 7 grains hardness or low pH water conditions below...

Page 29: ...procedure wttil all wuco arc purged g Close the quick fill water valve and purge valve and remove the hose Open all isolation valves Watch that system pressure rises to correct cold fill pressure h After thesystem has operated for a while eliminate anyresidualair by using the manual air vents located throughout the system t Ifpurge valves are not installed in system open manual air vents in system...

Page 30: ...E TO DESIRED SETPOINT BOILER ECONOMY SETTING To comply with Department of Energy regulations the control modulecirculates available hot water before turningon theboiler to attempt to satisfy a caU for heat hile attempting to satisfy the heat demand the control module also monitors the boiler temperature changes via the temperature sensor and determines whether or not the available hot water will s...

Page 31: ... 5 Verity operation perSection Gd Performcheck out procedure in Section 7 and fill in the Installation and service certificate on the same page IAWARNINGI IAWARNINGI Ellmlnate all s ys tem leaks Continual fresh makeup water wiU reduce boiler life Minerals can build up in sections reduc ingheat transfer overheatingcast iron and causing section failure If you discover evidence of any gas leak shut d...

Page 32: ...amper 2 When vent damper Is fully open Pilotwill light then allow main burners to ignite Vent damper must be fully open before main burners light If vent damper does not fully open flue products such as carbon monoxide will escape into house causing se vere personal injury or death 3 Lower thermostat setting Main burner flames will go out then vent damper will close 4 Repeat Steps 2 through 4 seve...

Page 33: ...e Button on spill switch pushed in Test ignition system safetydevice 0 Connect manometer to outlet side of gas valve Start 0 boiler allowing for normal start up cycle to occur and 0 main burnersto ignite flth main burnerson manually shut off gas supply at manual main shutoff gas valve Burners should go off Open manual main shutoff gas 0 valve Manometer should confirm there is no gas flow Pilot wil...

Page 34: ... BTU hr or greater This boiler is equipped with a tanlde s coil 9a Operation spark ignited pilot boilers NOTICE Follow all procedures given in this manual and operating instructions when operating the boiler Failure to do so could result in severe personal injury death or substantial property damage I Standby With no call for heat the vent damper and circulator are de energized No gas flows to pil...

Page 35: ...sbacktostep 1 heat A h A 1 Standby NO A 0 0 0 Waiting for call for heat 20 Call for heat YES A A 0 Circulator on 0 3 Limit circuit YES b h fi limit controls closed 0 4 Damper circuit YES A A 6 0 Damper proven open 5 Pilot ftame proven 0 Gas valve open YES A A A 0 Pilot remains on 0 Boiler producing heat 6 Limit cycle YES A A 0 0 limit circuit open 7 Flame outage 0 Flame out YES A A A 0 Boiler recy...

Page 36: ...oomply can resu in damage to boiler oomponents or cause unreliable operation resulting in possible severe property damage 36 NOTICE The control module is polarity sensitive to the incoming 120VAC power If polarity is reversed control will flash the POWER light wihen powered and will not cycle boiler AI contacts shown without power appled Connector and status light locations orientations may vary C...

Page 37: ...eable Replace pilot assembly nnecessary 3 11 any of the original wireas supplied with the appli ance must be replaced use minimum 105 cwire or equivalent Exception wires to arolloutTFEmust be 200 c or equivalent 4 Thermostat anticipator setting singlezone see T able Gfor anticipator setting depending on which gas valveisInstalled inboiler 5 For multiple zoning use either zone valves or circulators...

Page 38: ... touch any electric switch do not use any phone inyourbuilding Immediately callyour gas supplier from a neighbor s phone Follow thegassupplier s instructions Ifyoucannotreachyourgassupplier callthefiredepartment OPERATING INSTRUCTIONS 1 STOP Readthesafetyinformationaboveonthislabel 2 Sellhethermostallolowestsetting 3 Tumoffal electricalpowertotheappliance 4 Removefrontpanel 5 This appliance Is equ...

Page 39: ...oneInyourbuilding Immediately cal your gas supplier from aneighbor s phone Follow thegassupplier s Instructions Hyou cannotreachyourgassupplier calthefiredepartrnenL OPERATING INSTRUCTIONS 1 STOP Readthesafetyinformationaboveonthislabel 2 Setthethermostattolowestsetting 3 Turnoffallelectricalpowertotheappliance 4 Removefrontpanel S This appliance is equipped with an nition device which automat1cal...

Page 40: ...r gas supplier from aneighbor s phone Folow Do not touch any electric switch do not use any thegassupplier sInstructions phoneinyourbulding Ifyou cannotreachyourgassupplier callthefiredepartmenL OPERATING INSTRUCTIONS 1 STOP Readthesafetyinfonnationaboveonthislabel 2 Setthethennostattolowestsetting 3 Turnoffallelectricalpowertotheappliance 4 RemovefrontpaneL 5 This appliance is equipped with an ig...

Page 41: ...nyourbuilding hmediately call your gas supplier from aneighbor s phone Folow thegassupplier sinstructions Ifyou cannotreachyourgassupplier callthefiredepartment OPERATING INSTRUCTIONS 1 STOP Readthesafetyinformationaboveonthislabel 2 Setthethermostattolowestsetting 3 Turnoffallelectricalpowertotheappliance 4 Removefrontpanel S This appliance is equipped with an ignition device which automaticalyli...

Page 42: ...fs Expansion tank Boiler relief valve Review Review with owner Owner maintenance see CGa User s Information Manual for instructions Check boiler area Check air openings Check boiler pressure temperature gauge Check boiler interior piping Check venting system Check air vents Check boiler relief valve Check condensate drain system Check automatic air vents if used Test low water cutoff ij used Opera...

Page 43: ...roceeding Boiler area I Verify that boiler area is free of any combustible materials gasoline and other flammable vapors and liquids 2 Verifythat boiler area and air intake is free ofany Part Number 550 142 779 0712 ofthe contaminants listed in Table 1 on page 9 of this manual Ifanyoftheseare present in the boiler intake air vicinity they must be removed If they cannot be removed install combustio...

Page 44: ... base 3 If burners must be cleaned raise rear of each burner to release from support slot slide forward and remove Then brush and vacuum the burners thoroughly making sure aU ports are free ofdebris Carefully replace all burners making sure burner with pilot bracket is replaced in itsoriginal position and all burners are upright ports up 4 Inspect the base insulation a Pay attention to the WARNING...

Page 45: ...ghest radiator or baseboard unit usually in the attic or closet Has a gauge glass and overflow pipe to a drain Closed type weldedgas tightand locatedabove boiler Tank is partially filled with water leavingan air cushion for expansion Make sure this type of tank is fitted with a tank fitting such as the B G Tank Trol or Taco Taco Trol This fitting reduces gravity circula tion of air saturated tank ...

Page 46: ...lled 0 Check test continued Boiler relief valve I Inspect the reliefvalveand lift thelever toverifyflowas in the following warnings excerptedfrom a reliefvalve manufacturer s warning label Before operating any reliefvalve ensure that it is piped with its discharge in a safe area to avoidsevere scald potential Read manual Section 3 before proceeding further 46 2 After following the above warning di...

Page 47: ...ust be in position during boiler operation to prevent mo mentaryflante rollouton ignition of main flante Severe personal injuryorsubstantial property damage will result See pages 48 through 56 for additional troubleshooting information Before troubleshooting I Have the following items a Voltmeter that can check 120 VAC and 24 VAC b Microammeter with a minimum scale range of 0 25 c Continuitychecke...

Page 48: ...lat shaft between damper and actuator Boiler will tire Verify that damper service switch is in Hold Damper Open position Figure 28 3 Do not leave vent damper permanently In this pos ition Replace actuator immediately If vent damperis left in openposition boilerwillnotoper ate at published efficiencies Johnson Controls damper If troubleshootingchart recommends replacing actua tor and actuator is no...

Page 49: ... POWER Flashes once per second Flash code 2 Flash code 3 Flash code 4 CONDITION 120VAC connection to boiler reversed Internal fault microprocessor or rnemol Unused Unused Flash code s Internal fault water thermistors disagree Flash code 6 Internal fault gas valve circuit Rash code pattern POWER LED flashes 2 3 etc times rapidly followed by 2 seconds off then repeats ALL LED S FLASHING Propane Gas ...

Page 50: ...it ifund Yeliow lo pooL 2 4 VAC control clrc u1tt TSTAT 0 t POWER j l a 2 s j u ii t l e 2 to TSTAT Connector plug In vent damper Cl 0 TSTAT CIRC _ 0 0 co 0 u 0 0 c 09006 LIMIT DAMPER FLAME 5 Therma la1 6 24 VAC ventdamP conne t ons _ 4 24 VAC to control circuits OutdoOf Sensor ifussd 9 Boiler Supply Temperatln Sensor 120VACIN From end switctl 120VACH 120VACN j 120 VAC to circulator Flame sense wi...

Page 51: ... flashing 4 FLAME Chart Chart Reconnect 120 VAC IN plug light flashing 5 6 Remove transfonner plug Figure 30 Item 2 For insufficient heat or no heat problem go to page 50 on control module Chart 6 page 56 if POWER light is on steady 1 1 Using voltmeter check across len side top and With no other light flashing bottom pins of transformer receptacle Does voltmeterindicate 120 VAC No Yes i Usually in...

Page 52: ...sary reconnect the external thermostat across the wires circuit wires to the boiler thermostat wires and allow the There should NEVER be a voltage reading boiler to cycle Did you find a voltage across the two external thermostat circuit wires Yes No If no voltage Is found under any condition of the external Leave external boiler thermostat connection wires thermostat circu conne t the two boiler t...

Page 53: ...seconds Does vent damperoperate No Yes Remove DAMPERplug Figure 30 Item 6 page 50 Wail 5 minutes from plug receptacle of control module Is DAMPER light flashing Place vottmeter leads across tile top two pins 1 and 4 of tile DAMPER receptacle No I Yes Does the voltmeterindicate 24 VAC No Yes L Try reseating plug in Boiler should be in module receptacle and normal operating restart sequence If vent ...

Page 54: ...s in this manual Section 9b or on boiler label manual Section 9b or on boiler label Look through the pilot inspection port to see if the pilot is Do FLAME and POWER lights still flash burning No I Yes s pilot burning No II Yes Replace control module Retest Replace gas valve Allow boiler to continue cycling Retest boiler Are FLAME and POWER lights flashing Are FLAME and POWER lights flashing No Yes...

Page 55: ...nge breaker Contact gas supplier to correct No I I Yes Remove base access panel pressure orgas supply L see Figure 32 item 4 page 60 for location TURN OFF POWER to baileratservice switch or TURN OFF POWER to boiler at service switch orbreaker Verifypiotgaslile is not breaker Check name signal Detach sense lead from igntion control kinked obstructed damaged Remove base access panel see f 1 Figure 3...

Page 56: ...statto call for Replace control Repair replace No I Yes heat and recheck module circulator Retest operation Retest Repair replace Verity Sequence of wiring Retest Wart 30 seconds operation Figure 24 Are rll reu hylrl oil page 35 No I Yes t Wart 5 minutes Is FLAME light on Replace control module I Yes No Retest L If you have sufficient heat boiler snould be in normal Is LIMIT light on operating seq...

Page 57: ... a plastic bag for disposal 0 Wash potentiallycontaminated clothesseparately from other clothing Rinse clothes washer thoroughly NIOSH stated First Aid 0 Eye Irrigate immediately 0 Breathing Fresh air Part Number 550 142 779 0712 REMOVAL OF FIBERGLASS WOOL or INSTALLATION OF FIBERGLASS WOOL COMBUSnGN CHAMBER LINING OR BASE PANELS IAWARNINGI Thisproductcontains fiberglass jacket insulation and cera...

Page 58: ...include description and part number ofreplacement part Results from using modifiedorother manufacturedpartswill notbe covered bywarrantyand may damage boiler or impair operation Weil McLainpartnumbersare found in Well Mclain Boilers and Controls Repair Parts Lists The boiler contains ceramic fiber and fiberglass materials Use care when handling these materialsper instructions onpage 57 ofthis manu...

Page 59: ...CGa 6 450 021 244 CGa 7 450 021 245 CGa 8 321 114 291 CGa 6 450 021 246 notshown Section replacement kit includes seals and 381 354 527 sealant for 1 joint 11 SpiOswitch 210 F CGa 25 510 300 013 SpiOswitch 240 F CGa 3 through 8 510 300 014 4 Tie rod 7116 CGa 25 Ga 3 560 234 500 without nut CGa 4 560 234 501 3 per boiler CGa 5 560 234 502 CGa S 560 234 503 CGa 7 560 234 504 12 Vent Damper CGa25 3 4...

Page 60: ...rner rest CGa 25 450 003 742 CGa 3 450 003 736 CGa 4 450 003 737 CGa 5 450 003 738 CGa 6 450 003 739 CGa 7 450 003 740 CGa 8 450 003 741 9 Base insulation kit CGa 25 381 354 518 included insulation for all base CGa 3 381 354 518 parts above plus gasket material CGa 4 381 354 518 needed between block assembly CGa 5 381 354 518 and base CGa 6 381 354 519 CGa 7 381 354 519 CGa 8 381 354 519 10 Boiler...

Page 61: ...699 381 355 814 381 355 839 431 223 311 381 355 818 381 355 842 431 223 311 381 355 822 381 355 845 431 223 311 381 355 826 381 355 848 431 223 311 7 8 9 Jacket cross tie Jacket panel Jacket panel bottom front interior with insulation rear with insulation 431 223 325 381 355 405 431 223 300 431 223 326 381 355 415 431 223 301 431 223 327 381 355 422 431 223 302 431 223 328 381 355 429 431 223 303 ...

Page 62: ...gs shown are shipped loose with boiler 3 Drain valve Conbraco 31 606 il1 511 210 423 Fittings shown are included with boiler Hammond 710 Valve Matco Norca 205F04 Walls BD 2C 4 Circulator Taco 007 511 405 113 Fittings shown are shipped loose with boiler 5 Circulator gaskel universal 2 perboiler Weii Mcl ain 590 317 535 notshown Circulator hardware kit includes Weii Mclain 1 flange 2 nuts 2 screws 1...

Page 63: ...atural gas and liquefied Petroleum Propane gas components 3 Control module Natural gas United Technologies Uquefied Petroleum Propane gag notshown Wiring harness junction box to control module Weii Mclain notshown Wiring harness controls to control module Weii Mclain notshown Wiring harness thermostat Weii Mclain notshown Wiring harness sensor Weii Mclain 4 Control transformer Honeywell Part Numbe...

Page 64: ...1 4 CGa 8 1 4 1 4 A FRONT A Vent location inches 5 5 6 Yz 8 9 Yz 11 12 Yz i tt i l Do not cut or alter draft hood in any way Boil er combustion will be affected causing severe personal injury death or substantial property damage Hotel Boiler supplyand retum tappings areboth 1 A NPT NDio2 SeeTobie3 page 16for recommendedsystemsup plyandretumpiplr gsizes Boiler cirtulator is shipped loose C irtulato...

Page 65: ...boiler PIL for Liquefied Petroleum propane gas boiler 2 Based on standard test procedures prescribed by the United States Department of Energy DOE Chimney and breeching size 4 1 0 x20 4 1 0 X 20 5 1 0 X 20 6 1 0 X 20 6 1 0 X 20 7 1 0 X 20 7 1 0 X 20 Notes 3 NetAHRI ratings are based on net installed radiation ofsufficient quantity for the requirements of the building and nothing need be added for ...

Page 66: ...COa Series 2 Gas Fired Water Boiler Boiler Manual 14a Notes 66 Part Number 550 1 42 779 0712 ...

Page 67: ...CGa Series 2 Gas Fired Water Boiler Boiler Manual 14a Notes Part Number 550 142 779 0712 67 ...

Page 68: ...CGa Series 2 Gas Fired Water Boiler Boiler Manual 68 Weii Mclain 500 Blaine Street Michigan City IN 46360 2388 http www weil mclain com Part Number 550 142 779 0712 ...

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