Weil-McLain CGA25SPDN manual 10b Service & maintenance annual start-up

Page 45

GOLD CGa Gas-Fired Water Boiler — Boiler Manual

10b Service & maintenance — annual start-up

The boiler should be inspected and started annu- ally, at the beginning of the heating season, only by a qualified service technician. In addition, the maintenance and care of the boiler designated in Table 6, page 44, and explained on the following pages must be performed to assure maximum boiler efficiency and reliability. Failure to service and maintain the boiler and system could result in equipment failure.

Eliminate all system or boiler leaks. #ONTINUAL fresh makeup water will reduce boiler life. Miner- als can build up in sections, reducing heat transfer, overheating cast iron, and causing section failure. Leaking water may also cause severe property damage.

$O NOTOUSESpetroleum-based cleaning or sealing compounds in boiler system. Severe damage to boiler will occur, resulting in substantial property damage.

Electrical shock hazard — Turn off power to the boiler before any service operation on the

boiler except as noted otherwise in this instruction manual. Failure to turn off electrical power could result in electrical shock, causing severe personal injury or death.

of the CONTAMINANTS listed in 4ABLE  ON PAGE OF this manual. If any of these are present in the boiler intake air vicinity, they must be removed. If they cannot be removed, install combustion air piping to the boiler in accordance with national, provincial or local codes.

Air openings

 6ERIFY THAT COMBUSTION ANDNVENTILATIONLAIRIOPEN- ings to the boiler room and/or building are open and UNOBSTRUCTED#HECKEOPERATIONAANDNWIRING OF automatic combustion air dampers, if used.

 6ERIFY THAT BOILER VENT DISCHARGEHANDNAIRIINTAKE ARER CLEAN AND FREENOF OBSTRUCTIONS.

Flue gas vent system

1.6ISUALLYYINSPECTPENTIRE mUEUGASAVENTINGTSYSTEM for blockage, deterioration or leakage. Repair any joints that show signs of leakage in accordance with vent manufacturer’s instructions.

 6ERIFY THAT MASONRYOCHIMNEYS ARERLINED LINING IS IN good condition, and there are not openings into the chimney.

&AILURE TO INSPECT for the above conditions and have them repaired can result in severe personal injury or death.

OInspect . . .

Reported problems

Inspect any problems reported by owner and correct before proceeding.

Boiler area

 6ERIFY THAT BOILER AREA IS FREE OF ANYNCOMBUSTIBLE MATERIALS, gasoline and other flammable vapors and liquids.

 6ERIFY THAT BOILER AREA AND AIRIINTAKE AIS FREE OF ANYN

Pilot and main burner flames

 6ISUALLY INSPECTP PILOTL BURNER ANDN MAIN BURNER

flames as directed under Section D, page 32 of this manual.

Water piping

 #HECKETHEHBOILER INTERIOR PIPING ANDNALLLSYSTEM PIP- ing for signs of leaks.

2. Repair any leaks before proceeding.

Part Number 550-101-009/0107

45

Page 44 Page 46
Image 45
Page 44 Page 46
Contents Gold CGa Other boiler components How it worksGold CGa Gas-Fired Water Boiler Contents Installer Please read before proceedingUser Installations must follow these codes 1a Prepare boiler location codes & checklistBefore locating the boiler, check the following Ss .ATIONAL %LECTRICAL%#ODEMinimum dimensions are v Length by Residential garage installations1b Prepare boiler location clearances Foundation1c Prepare boiler location vent system When removing boiler from an existing common vent systemChimney or vent require- ments Line chimney with corrosion-resistant metalProducts to avoid 1d Prepare boiler location air contamination1e Prepare boiler location air openings THEHBOILER #HECKETHEHBOILER PlacementecomparedAir openings must be provided To a,Motorized air dampers Exhaust fans and air moversSingle air opening option Exception for large spacesOrifice replacement procedure 2a Prepare boiler placement and setupPlace boiler/crate near position Inspect orifices and burnersHydrostatic pressure test 2b Prepare boiler pressure testDrain and remove fittings Prepare boiler for testPrepare boiler install vent piping Prepare boiler draft hood & spill switchDraft hood installation Spill switch installationInstallation 2e Prepare boiler vent damper installationDamper blade Minimum clearances3a Water piping general information 3b Water piping single-zone system Diaphragm-type or bladder- type expansion tank FigureClosed-type expansion tank Piping multiple zones 3c Water piping multiple zones3c Water piping multiple zones Temperature gauges 3d Piping low temperature systemsValve adjustment Figures 13 and 14 only Primary/secondary preferred Bypass piping methodLendetemperaturemgauge Oiler Isolation BALANCING ValvesONE Valve $RAINAVALVE BOILER-bypass piping method Valve adjustment13 !IRISEPARATORRANDNAUTOMATICMVENT NIF Used .OTEOTHAT Theh SYSTEM-bypass piping method Gold CGa Gas-Fired Water Boiler Boiler Manual Connect gas supply piping to boiler Gas pipingNatural Gas Propane GasInstallation must comply with Field wiringWiring connections Ational %LECTRICAL #ODE !.3.&0! LATESTA EDI- tion6a Start-up preparation Freeze protection when usedCheck for gas leaks Determine if water treatment is needed Verify water chemistryInspect system water piping Fill the system with waterInspect base insulation  #LOSEOZONE Isolation VALVES6b Start-up operate boiler Efore STARTINGSTHEABOILER NDO the FOLLOWINGSs 6ERIFY the Boilerhand System are Full Oflwater Start the boiler 6c Start-up if boiler doesn’t startCheck system and boiler Check forCheck burner flames 6d Start-up verify operationCheck vent damper operation Check vent system operationOO Utton Onospilloswitch PUSHEDLIN Check-out procedure checklistOO !IRIPURGED FROMGSYSTEM  #ALCULATEUGASAINPUTMain ignited until thermostat circuit or limit circuit 8a Operation standing pilot boilers8b Lighting instructions CGa-25 to CGa-8 8b Lighting instructions CGa-25 to CGa-8 GAS mOWSSTO Pilot or Main GAS VALVE 9a Operation spark-ignited pilot boilers#ALL for HEATHthermostat circuit closes Damper is de-energized, and cycles to closed posi9a Operation spark-ignited pilot system Schematic wiring diagram 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 10a Service and maintenance schedule Service technicianOwner maintenance 10b Service & maintenance annual start-up Boiler heating surfaces Oiled-bearing circulatorsRepair.URNERSNANDRBASE Cold fill and operating pressures Gas pipingAir vents and air elimination Limit controls and cutoffsFollowing installation, the valve Safety relief valves should beReview with owner Boiler relief valve11a Troubleshooting procedure Before troubleshooting #ONTINUITY CHECKER Event of vent damper failure Check the followingEffikal or Field Controls damper  ASAPRESSURESChart 1 Standing pilot Boiler will not fire 11b Troubleshooting standing pilot boilersControl indicator lights Lockout modes 11c Troubleshooting spark-pilot boilersControl 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 Section assembly Base Jacket Trim Controls 12a Replacement partsPart number 12b Replacement parts section assemblyIgure R Base assembly, manifold, orifices and burners 12c Replacement parts baseIgure R Jacket assembly 12d Replacement parts jacketIgure R Trim assembly 12e Replacement parts trimIgure R Gas control assembly 12f Replacement parts controls13a Dimensions DOE 13b RatingsJobosite CONDITIONS #URRENT ./3 Recommen Handling ceramic fiber and fiberglass materialsREATHING 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.
Top Page Image Contents