Weil-McLain 78 manual 16b Parts, Figure No Description

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Weil-McLain 78 Boiler For Gas, Light Oil, Gas/Light Oil Fired Burners

16b Parts

 

Figure No.

Description

W-M Sales Ref. No.

 

A

Front Section (7813)

11B329

 

 

 

 

 

B

Intermediate Section Regular (7815)

11B330

 

 

 

 

Intermediate Section Supply - Steam (7814)

11B331

 

 

 

 

 

 

 

C

Intermediate Section Tankless (7816)

11B332

 

 

 

 

 

D

Back Section (7818)

11B333

 

 

 

 

 

 

Section Assembly Kit (includes for one joint - sealing rope

11B334

 

 

adhesive, sealing rings, silicone sealant, tie rods, washers, nuts)

 

 

 

 

 

 

E

Heater Cover Plate Carton (includes cover plate, gasket, studs, nuts)

11B335

 

 

 

 

 

F

Tankless Heater Carton (includes tankless heater, gasket, studs, nuts)

11B336

 

 

 

 

 

G

Heater Gasket

11B302

 

 

 

 

 

H

Cleanout Plate

11B337

 

 

 

 

 

I

Cleanout Plate Gasket

11B304

 

 

 

 

 

 

Flue Collector Hood "A"

11B338

 

 

 

 

 

 

Flue Collector Hood "B"

11B339

 

J

 

 

 

Flue Collector Hood "C"

11B340

 

 

 

 

 

 

Flue Collector Hood "D"

11B341

 

 

 

 

 

 

Flue Collector Hood "E"

11B351

 

 

 

 

 

 

Flue Collector Hood Hardware Kit (includes flat-stitched sealing rope,

11B342

 

 

double-faced tape, flue collar gasket, collector hood gaskets,

 

 

 

holddown clips, hardware)

 

 

K

Collector Hood Gasket Kit (includes flue collector hood gasket, flue

11B311

 

collar gasket, flat-stitched sealing rope and double-faced tape)

 

 

 

 

 

 

 

 

 

L

Flue Collector Hood End Cap

11B343

 

 

 

 

 

 

Flue Collar Assembly 8"

11B344

 

M

 

 

 

Flue Collar Assembly 10"

11B345

 

 

 

 

 

 

Flue Collar Assembly 12"

11B346

 

 

 

 

 

 

Combustion Chamber Kit (includes back refractory blanket, bottom

11B348

 

 

refractory blanket, waterglass, sealing rope, sealing rope adhesive)

 

 

 

 

 

 

N

Burner Mounting Plate Front Refractory 4-1/2" Burner Opening

11B349

 

 

 

 

Burner Mounting Plate Front Refractory 6-1/8" Burner Opening

11B350

 

 

 

 

 

 

 

O

Refractory Retainer Clip

10B960

 

 

 

 

 

P

Observation Port Assembly (includes observation port assembly,

11B300

 

sealing rope, screws)

 

 

 

 

 

 

 

 

 

Q

Sealing Rope

10B985

30

 

 

 

 

 

Part No. 550-141-705

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Contents Boiler Manual Contents Before selecting boiler location 1a Before Installing BoilerInstallation must comply with Provide combustion and ventilation air openingsLay a foundation, if needed 1b Before Installing BoilerProvide clearances for servicing around boiler Boiler Foundation Length TableLifting Weight Chart 2a Set Packaged Boiler or Block Assembly in PlaceFor block assembly For packaged boilerInstall back refractory blanket 3a Assemble BlockPrepare back section Page 3c Assemble Block Install burner mounting plate on front sectionIf using TI sections Prepare remaining sectionsPage Prepare flue collector hood assembly 3e Assemble BlockInstall flue collector hood assembly 3f Assemble BlockPage Install piping 5a Connect Water Boiler PipingGeneral water piping information Page 6a Connect Steam Boiler Piping General steam piping informationSteam Boiler Pipe Size Table Based on 2-Pipe Steam System Page Page Page Page Page Page Page Page To install burner 12a Install Burner13a Wiring and Fuel Piping To wire burner and boiler controlsTo fill water boilers 14a Make Final AdjustmentsAdjust burner and breeching damper To fill steam boilersDetermine if water treatment is needed water boilers only 14b Make Final AdjustmentsSkim steam boilers Check boiler for gas-tight seal15a Data and Dimensions Data Dimensions15b Data and Dimensions 16a Parts 16b Parts Figure No Description17a Ratings Part No -141-705/0600

78 specifications

The Weil-McLain 78 is a high-efficiency, versatile cast iron boiler that has been a staple in residential and commercial heating applications for decades. Renowned for its durability and performance, the boiler is designed to provide reliable heat while maintaining efficiency and minimizing energy consumption.

One of the main features of the Weil-McLain 78 is its cast iron construction. This material is not only known for its longevity but also for its excellent heat retention properties. The cast iron sections allow for a slow, steady heat release, ensuring that spaces remain warm and comfortable. The boiler is built to withstand the rigors of everyday use, making it ideal for both home and business environments.

In terms of technology, the Weil-McLain 78 incorporates an advanced combustion system that optimizes fuel usage. This efficient burning process not only conserves energy but also contributes to lower utility bills for users. Moreover, the boiler is designed to work well with natural gas or propane, giving homeowners and businesses flexibility in fuel choices.

Another characteristic contributing to the Weil-McLain 78’s reputation is its efficiency ratings. With a rating of 83% AFUE (Annual Fuel Utilization Efficiency), this boiler stands out in its class. This efficiency not only reduces carbon emissions but also enhances overall operational effectiveness, allowing for significant energy savings over time.

The Weil-McLain 78 is also designed for ease of installation and maintenance. Its compact design allows it to fit in tighter spaces, and the accessibility of key components simplifies routine servicing. The unit comes with a multitude of options for controls and accessories, ensuring adaptability to various heating systems.

Furthermore, Weil-McLain places a strong emphasis on safety features. The 78 model incorporates multiple safety controls, including a temperature limit switch and an automatic shut-off system. These features help prevent overheating and provide peace of mind for users.

In conclusion, the Weil-McLain 78 combines robust construction, advanced technology, and efficiency, making it an excellent choice for various heating needs. Its reputation for reliability, comfort, and safety has positioned it as a leader in the boiler market for both residential and commercial applications. With the Weil-McLain 78, users can enjoy consistent warmth and comfort for years to come, backed by a trusted name in heating solutions.