Weil-McLain CGA25SPDN 1c Prepare boiler location vent system, Chimney or vent require- ments

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GOLD CGa Gas-Fired Water Boiler — Boiler Manual

1c Prepare boiler location — vent system

Failure to follow all instructions can result in flue gas spillage and carbon monoxide emissions, causing severe personal injury or death.

Inspect existing chimney before installing boiler. Failure to clean or replace perforated pipe or tile lining will cause severe personal injury or death.

$O NOTOALTERTBOILER DRAFTAHOOD OR PLACEAANYNOBSTRUCTIONUOR NONAPPROVEDRVENT DAMPER IN BREECHINGCOR VENT SYSTEMT #3!3CERTIlCATION WILL BECOME VOIDI&LUE GASASPILLAGE ANDNCARBON MONOXIDE EMISSIONSSWILL OCCURCCAUSINGSSEVERE personal injury or death.

When removing boiler from an existing common vent system:

At the time of removal of an existing boiler, the following steps shall be followed with each appliance remaining connected to the common venting system placed in op- eration, while the other appliances remaining connected to the common venting system are not in operation.

a.3EAL ANYYUNUSED OPENINGS in the common venting system.

b.6ISUALLYYINSPECTPTHEHVENTINGTSYSTEM for proper size and horizontal pitch and determine there is no blockage or restriction, leakage, corrosion or other deficiencies which could cause an unsafe condi- tion.

c.4ESTSVENT SYSTEM — Insofar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining con- nected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the com- mon venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will

OPERATERAT MAXIMUMISPEED $O NOTOOPERATERAASUM- MEREEXHAUSTXFAN #LOSE lREPLACEDAMPERS

d.0LACEAIN OPERATION the appliance being inspected. Follow the lighting/operating instructions. Adjust thermostat so appliance will operate continuously.

e.4ESTSFOR SPILLAGE at draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle.

f.After it has been determined that EACHHAPPLIANCE remaining connected to the common venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers, and any other gas-burning appliance to their previ- ous conditions of use.

Any improper operation of common venting system should be corrected so the installation conforms with THEH.ATIONAL &UEL 'ASA#ODE D!.3) :LATESTEDITION

#ORRECTRBY RESIZING TO APPROACH THEHMINIMUMISIZE AS determined using the appropriate tables in Part 11 of

THAT CODED#ANADIAN INSTALLATIONS MUST COMPLY WITH " OR" )NSTALLATION#ODE

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Chimney or vent require- ments

 6ENTINGTMUST BE INSTALLEDAACCORDINGRTO 0ART  6ENT- INGNOF %QUIPMENT OF .ATIONAL &UEL 'ASA#ODE D!.3)

:LATEST EDITIONTANDNAPPLICABLE BUILDING CODES #ANADIAN INSTALLATIONSLMUST COMPLY WITH " OR " )NSTALLATIONS#ODES

2.See Ratings table on page 67 for minimum chimney or vent sizes. A chimney or vent WITHOUTHAALISTED CAP should extend AT LEASTAFEETEABOVE THEHHIGHEST POINT where it passes through a roof of a building and AT LEASTAFEETEHIGHER than ANYYPORTION OF AA BUILDINGDWITHIN AAHORIZONTAL DISTANCE OF  FEET. A chimney or vent must not extend less than the distances stated above.

3.A lined chimney is preferred and must be used when required by local, state, provincial and national

CODES LAWS WREGULATIONSAANDNORDINANCESA6ITREOUS TILE linings with joints that prevent retention of moisture and linings made of noncorrosive materials are best. Advice for flue connections and chimney linings can be obtained from local gas utility. 4YPEP" double- wall metal vent pipe or single-wall vent pipe may be used as a liner.

 #OLD MASONRYOCHIMNEYS NALSO KNOWNOAS OUTSIDE chimneys, typically have one or more walls ex- posed to outside air. When any atmospheric gas- fired boiler with automatic vent damper is vented through this type of chimney, the potential exists for

CONDENSATION TO OCCUR #ONDENSATION CANADAMAGE a masonry chimney. Weil-McLain recommends the following to prevent possible damage.

a.Line chimney with corrosion-resistant metal

LINERNSUCH ASS!,#® SINGLEWALL STAINLESS STEELEOR "VENT 3IZELINERNPER.ATIONAL &UELL 'ASA#ODE !.3)D:LATEST EDITION

b.Provide drain trap to remove any condensate.

5.Where two or more gas appliances vent into a common chimney or vent, equivalent area should be AT LEASTAEQUAL to area of vent outlet on largest appliance PLUS  PERCENT of vent outlet area on additional appliance.

Part Number 550-101-009/0107

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Contents Gold CGa How it works Other boiler componentsGold CGa Gas-Fired Water Boiler Contents User InstallerPlease read before proceeding 1a Prepare boiler location codes & checklist Installations must follow these codesBefore locating the boiler, check the following Ss .ATIONAL %LECTRICAL%#ODEResidential garage installations Minimum dimensions are v Length by1b Prepare boiler location clearances FoundationWhen removing boiler from an existing common vent system 1c Prepare boiler location vent systemChimney or vent require- ments Line chimney with corrosion-resistant metal1d Prepare boiler location air contamination Products to avoidTHEHBOILER #HECKETHEHBOILER Placementecompared 1e Prepare boiler location air openingsAir openings must be provided To a,Exhaust fans and air movers Motorized air dampersSingle air opening option Exception for large spaces2a Prepare boiler placement and setup Orifice replacement procedurePlace boiler/crate near position Inspect orifices and burners2b Prepare boiler pressure test Hydrostatic pressure testDrain and remove fittings Prepare boiler for testPrepare boiler draft hood & spill switch Prepare boiler install vent pipingDraft hood installation Spill switch installation2e Prepare boiler vent damper installation InstallationDamper blade Minimum clearances3a Water piping general information Closed-type expansion tank 3b Water piping single-zone systemDiaphragm-type or bladder- type expansion tank Figure 3c Water piping multiple zones Piping multiple zones3c Water piping multiple zones 3d Piping low temperature systems Temperature gaugesValve adjustment Figures 13 and 14 only Primary/secondary preferred Bypass piping methodONE Valve $RAINAVALVE LendetemperaturemgaugeOiler Isolation BALANCING Valves Valve adjustment BOILER-bypass piping method13 !IRISEPARATORRANDNAUTOMATICMVENT NIF Used .OTEOTHAT Theh SYSTEM-bypass piping method Gold CGa Gas-Fired Water Boiler Boiler Manual Gas piping Connect gas supply piping to boilerNatural Gas Propane GasField wiring Installation must comply withWiring connections Ational %LECTRICAL #ODE !.3.&0! LATESTA EDI- tionFreeze protection when used 6a Start-up preparationCheck for gas leaks Determine if water treatment is needed Verify water chemistryFill the system with water Inspect system water pipingInspect base insulation  #LOSEOZONE Isolation VALVESSs 6ERIFY the Boilerhand System are Full Oflwater 6b Start-up operate boilerEfore STARTINGSTHEABOILER NDO the FOLLOWING 6c Start-up if boiler doesn’t start Start the boilerCheck system and boiler Check for6d Start-up verify operation Check burner flamesCheck vent damper operation Check vent system operationCheck-out procedure checklist OO Utton Onospilloswitch PUSHEDLINOO !IRIPURGED FROMGSYSTEM  #ALCULATEUGASAINPUT8a Operation standing pilot boilers Main ignited until thermostat circuit or limit circuit8b Lighting instructions CGa-25 to CGa-8 8b Lighting instructions CGa-25 to CGa-8 9a Operation spark-ignited pilot boilers GAS mOWSSTO Pilot or Main GAS VALVE#ALL for HEATHthermostat circuit closes Damper is de-energized, and cycles to closed posiSchematic wiring diagram Spark-ignited pilot system 9a Operation spark-ignited pilot systemLadder wiring diagram Spark-ignited pilot system 9b Operating instructions CGa-25 to CGa-8 9b Operating instructions CGa-25 to CGa-6 9b Operating instructions CGa-25 to CGa-6 9b Operating instructions CGa-7 to CGa-8 Owner maintenance 10a Service and maintenance scheduleService technician 10b Service & maintenance annual start-up Repair.URNERSNANDRBASE Boiler heating surfacesOiled-bearing circulators Gas piping Cold fill and operating pressuresAir vents and air elimination Limit controls and cutoffsSafety relief valves should be Following installation, the valveReview with owner Boiler relief valve #ONTINUITY CHECKER 11a Troubleshooting procedureBefore troubleshooting Check the following Event of vent damper failureEffikal or Field Controls damper  ASAPRESSURES11b Troubleshooting standing pilot boilers Chart 1 Standing pilot Boiler will not fire11c Troubleshooting spark-pilot boilers Control indicator lights Lockout modesControl indicator lights NON-LOCKOUT modes Troubleshooting the control module11c Troubleshooting spark-pilot boilers Tstat Circ Usually indicates 48 VAC on thermostat circuit stray voltage Chart 4 Spark-ignited pilot Damper light flashing Chart 5 Spark-ignited pilot Flame & Power lights flashing Item 8 , Verify Sequence 12a Replacement parts Section assembly Base Jacket Trim Controls12b Replacement parts section assembly Part number12c Replacement parts base Igure R Base assembly, manifold, orifices and burners12d Replacement parts jacket Igure R Jacket assembly12e Replacement parts trim Igure R Trim assembly12f Replacement parts controls Igure R Gas control assembly13a Dimensions 13b Ratings DOEHandling ceramic fiber and fiberglass materials Jobosite CONDITIONS #URRENT ./3 RecommenREATHING H&RESHGAIR Ss 5SES E./3 .CERTIlED Dust Crespirator E. 

CGA25SPDN specifications

The Weil-McLain CGA25SPDN is a high-efficiency gas-fired boiler designed to deliver dependable heating performance while maintaining a strong focus on energy savings and user-friendly operation. Ideal for residential applications, this boiler is engineered to provide consistent warmth and comfort in homes with various heating demands.

One of the main features of the CGA25SPDN is its durable construction. Built with high-quality materials, this boiler is designed to withstand the rigors of frequent operation while maximizing longevity. It features an advanced cast iron heat exchanger that efficiently transfers heat to the water, resulting in lower energy costs and improved overall performance.

Efficiency is a key characteristic of the Weil-McLain CGA25SPDN. Its design promotes efficient combustion, allowing for a higher Annual Fuel Utilization Efficiency (AFUE) rating. With an AFUE rating of up to 82%, this boiler ensures that more of the fuel used is converted into usable heat, which translates to reduced energy bills for homeowners.

The boiler exhibits a user-friendly control system that allows for easy operation and maintenance. It comes equipped with an integrated vent damper that maximizes efficiency by reducing heat loss during standby periods. Additionally, the CGA25SPDN features an adjustable thermostat, enabling homeowners to customize their heating preferences easily.

Another significant feature of the CGA25SPDN is its versatility. The boiler is compatible with various heating applications, including hot water heating systems and home heating configurations. This adaptability makes it a great choice for both new installations and retrofitting existing systems.

Safety is always a concern with gas-fired appliances, and the Weil-McLain CGA25SPDN addresses this through its advanced safety mechanisms. The boiler incorporates safety controls that prevent overheating and ensure proper operation, providing peace of mind to homeowners.

In summary, the Weil-McLain CGA25SPDN stands out as a reliable and efficient heating solution for residential settings. With its durable construction, high-efficiency performance, user-friendly controls, and impressive safety features, it is an exceptional choice for those seeking a dependable gas-fired boiler that meets modern heating demands while keeping energy costs in check. Homeowners can trust the Weil-McLain CGA25SPDN for warmth and comfort through the cold months.
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