Weil-McLain 78 manual Contents

Models: 78

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Contents

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

Contents

1.

Before Installing Boiler

page 3

2.

Set Packaged Boiler or Block Assembly in Place

page 5

3.

Assemble Block

page 6

4.

Perform Hydrostatic Pressure Test

page 12

5.

Connect Water Boiler Piping

page 13

6.

Connect Steam Boiler Piping

page 15

7.

Install Jacket

page 19

8.

Pipe Tankless Heaters

page 19

9.

Install Water Boiler Controls

page 20

10.

Install Steam Boiler Controls

page 21

11.

Connect Breeching and Venting Systems

page 23

12.

Install Burner

page 24

13.

Wiring and Fuel Piping

page 24

14.

Make Final Adjustments

page 25

15.

Data and Dimensions

page 27

16.

Parts

page 29

17.

Ratings

page 31

Warranty

Back Cover

When Calling or Writing about the Boiler

Please have model and series from boiler rating label and CP number(s) from boiler jacket or controls.

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 of the product.

Indicates presence of hazards that will cause severe personal injury, death or substantial property damage if ignored.

Indicates presence of hazards that can cause severe personal injury, death or substantial property damage if ignored.

Indicates presence of hazards that will or can cause minor personal injury, death or substantial property damage if ignored.

Indicates special instructions on installation, operation or maintenance that are important but not related to personal injury.

Read all instructions before installing. Failure to follow all instructions in proper order can cause severe personal injury, death or substantial property damage.

2

Do not use petroleum-based cleaning or sealing components in boiler system. Severe damage to system components can result, causing substantial propety damage.

Part No. 550-141-705

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Weil-McLain 78 manual Contents