Weil-McLain CGA25SPDN Gas piping, Connect gas supply piping to boiler, Natural Gas, Propane Gas

Page 26

GOLD CGa Gas-Fired Water Boiler — Boiler Manual

4Gas piping

Connect gas supply piping to boiler

1.Remove jacket front panel and refer to &IGURE  to pipe gas to boil- er.

a.)NSTALLTDRIP LEG at inlet of gas connection to boiler. Where local utility requires drip leg to be extended to the floor, use appropri- ate length of pipe between cap and tee.

b.)NSTALLTGROUND JOINT UNION for servicing, when required.

c.)NSTALLTMANUALASHUTOFFHVALVE in gas supply piping outside boiler jacket when required by local codes or utility requirements.

d.)N #ANADA — When using manual main shutoff valve, it MUSTSBE IDENTIlED by the installer.

2.3UPPORTTPIPING with hangers, not by boiler or its accessories.

3.0URGEEALLAAIR from gas supply piping.

 "EFORE PLACINGCBOILER IN OPERATION CHECKKBOILER ANDNITSTGASACONNEC

TION FOR LEAKS.

a.#LOSEOMANUALAMAIN SHUTOFF VALVE during any pressure testing at

LESS THAN vHWC

b.$ISCONNECT BOILERCAND GASOVALVE FROM GAS SUPPLYYPIPING dur-

INGNANY PRESSURE TESTING GREATER THANEvTWC

$O NOTOCHECKKFOR GASALEAKSAWITH AN OPEN mAME — Use bubble test. Failure to use bubble test or check for gas leaks can cause severe personal injury, death or substantial property damage.

5.5SES PIPE DOPE COMPATIBLE WITH PROPANEA GASES Apply sparingly only to male threads of pipe joints so that pipe dope does not block gas flow.

&AILURE TO APPLYYPIPE DOPE as detailed above can result in severe personal injury, death or substantial property damage.

Table 4 Pipe capacity for 0.60 specific gravity natural gas

Gas pipe

 

Capacity of pipe for pipe size of:

 

length

 

(Capacity in cubic feet gas per hour)

 

(feet)

½"

¾"

1"

1¼"

1½"

10

132

278

520

1050

1600

 

 

 

 

 

 

20

92

190

350

730

1100

30

73

152

285

590

860

 

 

 

 

 

 

40

63

130

245

500

760

50

56

115

215

440

670

 

 

 

 

 

 

75

45

93

175

360

545

100

38

79

150

305

460

 

 

 

 

 

 

150

31

64

120

250

380

 

 

 

 

 

 

Natural Gas:

1.Refer to 4ABLE  FOROPIPE LENGTH ANDNDIAMETERE"ASE on rated boiler input (divide by 1,000 to obtain cubic

feet per hour). 4ABLE  is only for gas with SPECIlCC

GRAVITY  WITH AAPRESSURE DROP THROUGH THEH GASAPIPING OF v WC For additional gas pipe

SIZING INFORMATION REFERFTO !.3) : ORO" OR "FOR#ANADIAN INSTALLATIONS 

2.Inlet pressure required at gas valve inlet:

ss-AXIMUM v WC ss -INIMUM Mv WC

ss -ANIFOLD GAS PRESSURE vPWC

 )NSTALLT LOCKUP GASAPRESSURE REGULATORLIN SUPPLY

line IF INLETLPRESSURE EXCEEDS v WC Adjust for

vWC MAXIMUM

Propane Gas:

 #ONTACTTGASCSUPPLIER TO SIZE PIPES ITANKS ANDO lockup gas pressure regulator.

2.Adjust propane supply regulator provided by gas

SUPPLIER FOR v WCOMAXIMUMPRESSURE

3.Inlet pressure required at gas valve inlet:

ss-AXIMUM v WC ss -INIMUM MvMWC

ss -ANIFOLD GAS PRESSURE v WC

&IGURE R Gas supply piping

26

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 Before locating the boiler, check the following 1a Prepare boiler location codes & checklistInstallations must follow these codes Ss .ATIONAL %LECTRICAL%#ODE1b Prepare boiler location clearances Residential garage installationsMinimum dimensions are v Length by FoundationChimney or vent require- ments When removing boiler from an existing common vent system1c Prepare boiler location vent system Line chimney with corrosion-resistant metal1d Prepare boiler location air contamination Products to avoidAir openings must be provided THEHBOILER #HECKETHEHBOILER Placementecompared1e Prepare boiler location air openings To a,Single air opening option Exhaust fans and air moversMotorized air dampers Exception for large spacesPlace boiler/crate near position 2a Prepare boiler placement and setupOrifice replacement procedure Inspect orifices and burnersDrain and remove fittings 2b Prepare boiler pressure testHydrostatic pressure test Prepare boiler for testDraft hood installation Prepare boiler draft hood & spill switchPrepare boiler install vent piping Spill switch installationDamper blade 2e Prepare boiler vent damper installationInstallation 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 Valve adjustment Figures 13 and 14 only 3d Piping low temperature systemsTemperature gauges 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 Natural Gas Gas pipingConnect gas supply piping to boiler Propane GasWiring connections Field wiringInstallation must comply with Ational %LECTRICAL #ODE !.3.&0! LATESTA EDI- tionCheck for gas leaks Determine if water treatment is needed Freeze protection when used6a Start-up preparation Verify water chemistryInspect base insulation Fill the system with waterInspect system water piping  #LOSEOZONE Isolation VALVESSs 6ERIFY the Boilerhand System are Full Oflwater 6b Start-up operate boilerEfore STARTINGSTHEABOILER NDO the FOLLOWING Check system and boiler 6c Start-up if boiler doesn’t startStart the boiler Check forCheck vent damper operation 6d Start-up verify operationCheck burner flames Check vent system operationOO !IRIPURGED FROMGSYSTEM Check-out procedure checklistOO Utton Onospilloswitch PUSHEDLIN  #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 #ALL for HEATHthermostat circuit closes 9a Operation spark-ignited pilot boilersGAS mOWSSTO Pilot or Main GAS VALVE 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 Air vents and air elimination Gas pipingCold fill and operating pressures Limit controls and cutoffsReview with owner Safety relief valves should beFollowing installation, the valve Boiler relief valve #ONTINUITY CHECKER 11a Troubleshooting procedureBefore troubleshooting Effikal or Field Controls damper Check the followingEvent of vent damper failure  ASAPRESSURES11b Troubleshooting standing pilot boilers Chart 1 Standing pilot Boiler will not fireControl indicator lights NON-LOCKOUT modes 11c Troubleshooting spark-pilot boilersControl indicator lights 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 DOEREATHING H&RESHGAIR Handling ceramic fiber and fiberglass materialsJobosite CONDITIONS #URRENT ./3 Recommen 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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