Weil mclain 88 installation manual

Operate each boiler and its pump with a Weil-McLain boiler control panel. Page 17 Pipe sizes shown are for two-pipe, pumped-return systems. Adjust pipe sizing as needed when connecting to gravity-return systems. Steam boiler piping guidelines be 24 inches Boiler Upper brackets on Page 21 Install jacket continued Installing jacket support brackets, support channels and corners piping and other components omitted for clarity Part No.

Page 23 Install jacket continued Jacket side panel placement Part No. Page Pipe Tankless Heaters Do not pipe multiple heaters in series. In hard water areas, soften cold domestic water supply to heaters to prevent lime build-up. Failure to properly install, pipe and wire boiler controls can result in severe damage to boiler, building and per- sonnel; Failure to properly install, pipe and wire boiler controls can result in severe damage to boiler, building and per- sonnel; and is not covered by boiler warranty.

Install steam pressure operating and high limit controls and pressure gauge. Unpack burner. Provide a water softener for make-up water if hardness exceeds 7 grains. If this does not work, contact your boiler supplier or Weil-McLain to obtain an optional combustion chamber kit see page 38 for contents.

Drain boiler. Page 35 An additional allowance should be made for gravity hot water systems or for unusual piping and pick-up loads. Burner input based on maximum of 2, feet altitude. Page 37 Dimensions continued Dimensions see lettered dimensions on opposite page Part No. Page 39 Parts continued Part No.

This manual is also suitable for: Show all Print page 1 Print document 41 pages. Rename the bookmark. Use " x " studs, washers and gap still exists, contact your Weil-McLain distributor or sales office before continuing installation. Part No. Install: Boiler drain not furnished. Water pressure gauge — for test only.

Be sure gauge can handle test pressure — Secure assembly to section. To remove flue HXT-bars when required to clean the boiler flueways, grab the end of each HXT-bar with pliers and pull straight out. Page 15 Calculate only secondary boiler piping circuit resistance. Al- low for head loss through the boiler equal to three 90 degree elbows of secondary pipe size. Operate each boiler and its pump with a Weil-McLain boiler control panel.

Size secondary boiler circuit piping using the flow rate ranges given in Figure 17, page Page 17 Pipe sizes shown are for two-pipe, pumped-return systems. Adjust pipe sizing as needed when connecting to gravity-return systems. Consult local Weil-McLain distributor or sales office before installing alternate piping. Steam boiler piping guidelines Minimum height of header above water line must Provide at tem such as a BCP panel to open each steam point A either: valve automatically before firing burner.

Page Pipe Tankless Heaters In hard water areas, soften cold domestic water supply to heaters to prevent lime build-up. When installing an automatic mixing valve, se Failure to properly install, pipe and wire boiler controls can result in severe damage to boiler, building and per- sonnel; Unpack burner.

Provide a water softener for make-up water if hardness exceeds 7 grains. Page Make Final Adjustments Adjust the burner if possible to redirect the flame. If this does not work, contact your boiler supplier or Weil-McLain to obtain an optional combustion chamber kit see page 38 for contents. Drain boiler. Hoist back section upright. Then temporarily screw a 6-inch threaded pipe at least 36 inches long into the lower return tapping.

Hoist the section and put into position. Place a block under the 6-inch pipe to hold the back section upright and plumb. The back section must be plumb before installing other sections to ensure the block will assemble correctly.

The 6-inch support pipe and block can be removed after several sections have been installed, and the assembly is stable. Install intermediate sections as described on the following page. Remove grit from port machined surfaces with clean rag. Position intermediate section so aligning lugs fit into sockets of next section. See Figure 8. Install TI tankless intermediate and SI supply intermediate sections when used in order shown in Figure 9, page Draw sections together until metal-to-metal contact is made around machined port openings see Figure 8 :.

Oil threads on 4 draw rods. Install washer and nut on end to be tightened. Use nut only on other end. Important — Leave an equal amount of thread on each end of the draw rod. This is needed to allow securing the jacket support brackets in place. The draw rods must not extend past the face of the front or back section, or they will interfere with the jacket. Draw rods should be torqued to a range of 90 to ft-lbs. Do not back off draw rods.

Metal-to-metal contact will be achieved around port openings. If gap occurs, it should be no greater than. Check with feeler gauge. If, for any reason, gap around machined port opening exceeds. If corrections are made and gap still exists, contact your Weil-McLain distributor or sales office before continuing installation.

After erecting first intermediate section, check both sections for plumb. Failure to plumb sections can cause misaligned piping and breeching, possibly resulting in property damage. Check each section for proper sealing rope position before proceeding to next section. Failure to position sealing rope properly can cause boiler to not seal gas-tight. Gas tight seal prevents possible flue gas leakage and carbon monoxide emissions, resulting in severe personal injury or death. Install remaining intermediate sections and front section using the same procedure.

See Figure 10 and Figure 11 for tapping locations. Boiler drain not furnished. Water pressure gauge — for test only. Be sure gauge can handle test pressure — see step 3. Air vent in upper tapping K. Do not pressure test with any control installed. Damage to control can occur due to overpressure. Fill boiler. Vent all air. Pressure test at least 10 minutes at a pressure not less than the following:. Steam boiler: Between 45 and 55 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.

Leaks must be repaired at once. Failure to do so can damage boiler, resulting in substantial property damage. Drain boiler and remove air vent, boiler drain and gauge.

Remove plugs from tappings that will be used for controls and accessories. Figure 10 Boiler tapping locations and sizes see Figure Secure assembly to section. Thread and lock together two nuts on rounded end of stud. Thread flat end of stud into one of four holes located around opening.

Repeat steps a and b for remaining studs. Repeat above steps for back observation port assembly. Install burner mounting plate:. Overlap ends at least one inch. Install burner mounting plate with part number and the word, " UP, " positioned at top. Install front observation port assembly:. Flue HXT-bars are identified by painted ends. They must be inserted as shown, with the HXT-bars in the sequence:.

Figure 12 Insert HXT-bars through cleanout openings as shown below omit the bottom, blue-tipped, HXT-bar in the opening between the front section and the first intermediate section.

Welcome to ManualMachine. We have sent a verification link to to complete your registration. Log In Sign Up. Forgot password? Enter your email address and check your inbox. Please check your email for further instructions. Enter a new password. Before installing boiler Installation must comply with — 1. Before selecting boiler location 1. Check for nearby connections to: a.

Fuel supply. Electrical power. Provide clearance around boiler 1. Lay a foundation, if needed 1. A level concrete or brick foundation, constructed per Figure 1 and Figure 2 is required when: a. Non-level conditions exist.