Weil-McLain 88 manual Perform hydrostatic pressure test, Prepare boiler and test

Page 11

Boiler manual: • Installation • Start-Up • Maintenance • Parts

Perform hydrostatic pressure test

Prepare boiler and test:

 

Figure 11 Boiler tappings

1.See Figure 10 and Figure 11 for tapping locations. Install:

a.Boiler drain (not furnished).

b.Water pressure gauge — for test only. Be sure gauge can handle test pressure — see step 3.

c.Air vent in upper tapping (K).

2.Plug remaining tappings.

Do not pressure test with any control installed. Damage to control can occur due to overpressure.

3.Fill boiler. Vent all air. Pressure test at least 10 minutes at a pressure not less than the following:

a.Steam boiler: Between 45 and 55 psig.

b.Water boiler: 1½ times maximum allowable working pressure (MAWP) stamped on the boiler nameplate, located on boiler jacket front panel.

Do not exceed above test pressures by more than 10 psig.

Do not leave boiler unattended. Cold water fill could expand and cause excessive pressure, resulting in severe personal injury, death or substantial property damage.

4. Check for maintained gauge pressure and leaks. Repair if found.

Leaks must be repaired at once. Failure to do so can dam- age boiler, resulting in substantial property damage.

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

5.Drain boiler and remove air vent, boiler drain and gauge. Remove plugs from tappings that will be used for controls and accesso- ries.

Figure 10 Boiler tapping locations and sizes (see Figure 11)

Location

Size

Steam

Water

 

 

 

 

 

 

A

2"

Steam relief valve and/or

High limit

 

 

 

Skim tapping

Manual reset limit

 

 

 

 

 

 

B

2"

Steam relief valve

Water relief valve

 

L

1"

Secondary probe LWCO

Not used — Plug

 

 

 

 

 

 

C1 & C2

1"

Low water cut-offs

Alternate low water cut-offs

 

C1

 

—

Combination high and low

 

 

 

 

limit control

 

 

 

 

 

 

D1 & D2

1"

Alternate low water cut-offs

Firing rate temperature

 

 

 

 

control (when used)

 

 

 

 

Low water cut-offs

 

E1 & E2

½"

Gauge glass

—

 

F1 & F2

C\,"

Try cock tappings

—

 

G

¾"

Pressure limit control,

Combination pressure–

 

 

 

Pressure operating control and

temperature gauge

 

 

 

pressure gauge,

 

 

 

 

Firing rate pressure control

 

 

 

 

(when used)

 

 

H

¾"

Boiler drain (see Figure 17,

Boiler drain

 

 

 

page page 15, for system blow-

 

 

 

 

off (drain) valve locations and

 

 

 

 

sizes

 

 

 

 

 

 

 

K

1"

—

Piping to compression tank or

 

 

 

 

automatic air vent

 

Part No. 550-100-068/0308

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Contents Boiler Manual Read before proceeding Read before proceedingHazard Definitions Contents Provide clearance around boiler Before installing boilerInstallation must comply with Before selecting boiler locationCombustion air openings to outside Required volume of interior spacesCombustion and ventilation air openings Combustion air openings to insideMechanical Combustion Air Supply Engineered InstallationsCombustion air combination indoor and outdoor openings Louvers, Grilles, and ScreensFor packaged boiler For block assemblySet boiler in place Prepare and position back section Assembling the blockIf using tankless heater TI sections Install intermediate sectionsNumber Boiler modelSection arrangement Steam boiler Between 45 and 55 psig Perform hydrostatic pressure testPrepare boiler and test Insert HXT-bars Complete block assemblyInstall burner mounting plate on front section Install draft hood collar Install cleanout platesGeneral water piping information Install pipingConnect water boiler piping By-pass circulator sizing Piping multiple boilersGeneral steam piping information Connect steam boiler pipingHartford loop piping for all steam boilers Steam boiler piping guidelinesDrawing legend & notes Minimum height of header above water line must be 24 inchesModel 1288 through 1888 steam 3 or 4 risers required Multiple Steam Boiler Piping Gravity Condensate Return Remove jacket parts from cartons Install jacketBefore installing jacket Install support brackets/channelsInstall jacket Install jacket trim Install jacket front and back panelsInstall jacket side panels Install jacket top panelsJacket side panel placement Jacket top panel placement Hot water can scald Pipe tankless heatersTo pipe tankless heaters Install controls Install water boiler controlsSteam control locations Install steam boiler controlsSteam control siphon and fittings Construct metal breeching Connect breeching and venting systemsGeneral venting information Select type of venting systemStub vent forced draft single boiler Install burner & wiring and fill system Gas piping Install fuel pipingFuel oil piping Skim steam boilers Make final adjustmentsAdjust burner and damper assembly Flue gas temperature no lower than 330FHandling ceramic fiber and fiberglass materials Removal of Front Plate or Cleanout Plate Materials=B=R Ratings1788 1888 DimensionsDimensions inches Model Model Supply & return tappings Burner lengths Dimension FDimensions see lettered dimensions on opposite Description Part number PartsParts Weil-McLain Limited Warranties Warranty

88 specifications

The Weil-McLain 88 series is a commercial cast iron boiler recognized for its durability, efficiency, and versatile design, making it a preferred choice for various heating applications. Designed primarily for commercial and industrial use, the Weil-McLain 88 combines advanced technology with proven engineering principles to deliver reliable performance and long-lasting service.

One of the standout features of the Weil-McLain 88 is its cast iron construction. Cast iron is renowned for its ability to retain heat, resulting in lower fuel consumption and more consistent heating. This robust material ensures that the boiler can withstand high temperatures and pressures, making it suitable for heavy-duty applications. The sectional design of the boiler allows for easy installation and maintenance, enabling quick access to components and minimizing downtime.

In terms of efficiency, the Weil-McLain 88 is designed to achieve high thermal efficiency ratings. The boiler employs a flue gas recirculation system, which significantly reduces heat loss and maximizes energy utilization. Additionally, its low water content provides rapid heating response times, ensuring that spaces are heated promptly, even during peak demand periods.

Another noteworthy characteristic of the Weil-McLain 88 is its versatility. The boiler can be configured for a variety of applications, including hot water heating, hydronic heating systems, and steam heating. It is compatible with multiple fuel types, including natural gas, propane, and various oil options, allowing for flexibility in fuel choice based on availability and pricing.

The Weil-McLain 88 also incorporates advanced control technologies that enhance operational efficiency. The integrated electronic controls feature diagnostic capabilities to streamline troubleshooting and maintenance, ensuring optimal performance throughout the boiler’s lifespan. Moreover, the boiler's design is compatible with modern building management systems, allowing for seamless integration into existing heating setups.

Overall, the Weil-McLain 88 series stands out for its combination of quality construction, efficient operation, and adaptability to different heating needs. Whether for a commercial building, industrial facility, or institutional application, the Weil-McLain 88 provides a reliable and efficient heating solution that meets the demands of the modern world.
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