Weil-McLain 550-141-829/1201 Manual Download Page 1

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Installer: • Make sure this is the correct manual for the boiler. Verify boiler model on

rating label.

• Leave all documentation received with boiler and burner with unit for

future reference.

User: Boiler and burner must be installed and serviced by qualified service technician.

Part No. 550-141-829/1201

SGO

SERIES 3 OIL-FIRED NATURAL DRAFT STEAM BOILER

This Manual
Includes:

Installation

Start-Up

Boiler Parts

Summary of Contents for 550-141-829/1201

Page 1: ...ave all documentation received with boiler and burner with unit for future reference User Boiler and burner must be installed and serviced by qualified service technician Part No 550 141 829 1201 SGO SERIES 3 OIL FIRED NATURAL DRAFT STEAM BOILER This Manual Includes Installation Start Up Boiler Parts ...

Page 2: ...pecial instructions on installation operation or maintenance that are important but not related to personal injury hazards Symbol Definitions The following symbols are used to indicate sequence of installation for Factory assembled packaged boiler block jacket and controls Sizes 3 through 6 only Factory assembled block no burner Sizes 3 through 6 with jacket installed steam trim controls shipped s...

Page 3: ...ntents 3 Before Installing Boiler 4 5 Install Packaged Boiler 6 7 Install Non Packaged Boiler 7 11 Connect Breeching 12 13 Connect Steam Piping 14 17 Connect Tankless Heater Piping 18 Connect Wiring 19 23 Connect Oil Piping 24 Start Up 25 Check Out Procedure 26 Installation and Service Certificate 26 Appendix 27 Parts List 28 Parts Drawing 29 Dimensions 30 31 Ratings Back Cover Table of Contents ...

Page 4: ...combustible materials gasoline and other flammable liquids Failure to keep boiler area clear and free of combustible materials gasoline and other flammable liquids and vapors can result in severe personal injury death or substantial property damage Provide clearances around boiler see FIGURE 1 Jacket cap must be in place on boiler to avoid requiring an 18 minimum clearance from back or top of boil...

Page 5: ...n outside air is used connect each opening directly or by ducts to the outdoors or to crawl or attic space that freely connects with outdoors Size per below Through outside wall or vertical ducts at least 35 sq in per 1 GPH input 1 sq in per 4000 Btu input of all fuel burning appliances plus requirements for any equipment that can pull air from room including clothes dryer and fireplace Through ho...

Page 6: ...eater knockout in left side of jacket panel and for SGO 6 only tankless heater control knockout 2 Remove tankless heater cover plate and gasket 3 Install new gasket and tankless heater over studs around opening Secure with 3 8 nuts 4 Install tankless heater operating control where shown on page 18 If not furnished use operating control with maximum 10 F differential Perform hydrostatic pressure te...

Page 7: ...owing precautions be taken when handling these materials Precautionary measures Avoid breathing fiberglass dust and contact with skin and eyes Use NIOSH approved dust mist respirator Wear long sleeved loose fitting clothing gloves and eye protection Wash work clothes separately from other clothing Rinse washer thoroughly Operations such as sawing blowing tearout and spraying may generate airborne ...

Page 8: ...small port bottom long rod and finally top long rod i Torque on both 5 rods and bottom long rod should be 50 60 ft lbs long top rod should be 20 25 ft lbs Do not back off nuts j Metal to metal contact should be made around port openings If gap does exist it should be less than 020 Check with feeler gauge k If gap around port openings exceeds 020 check for dirt on port openings sockets or misaligne...

Page 9: ...Install Non Packaged Boiler CONTINUED ...

Page 10: ...ting flange and gasket to burner mounting door Use three bolts provided 2 Secure burner on flange with three bolts 3 Position burner so end of air tube is level to 1 tilt down toward chamber Open door to verify burner position End of air tube should be flush to recessed from inside wall of burner door refractory Check for secure placement of insulation on target wall chamber floor and burner mount...

Page 11: ...Install Packaged and Non Packaged Boiler ...

Page 12: ...ng Long horizontal breechings excessive number of tees and elbows or other obstructions restricting combustion gas flow can result in possibility of condensation flue gas leakage and carbon monoxide emissions which can lead to severe personal injury or death 1 Install 2 flue pipe brackets 2 Connect full sized breeching when possible See Minimum Chimney Size Table Back outlet see FIGURE 7 Top outle...

Page 13: ...Top Outlet Breeching Connection FIGURE 8 Connect Breeching CONTINUED Back Outlet Breeching Connection FIGURE 7 13 ...

Page 14: ...g attached to relief valve for manufacturer s instructions Pipe relief valve discharge line near floor close to floor drain to eliminate potential of severe burns Do not pipe to any area where freezing could occur Do not plug valve or place any obstruction in discharge line 3 Float type low water cutoff only install blowdown line in bottom of cutoff See FIGURE 9 or 10 and also refer to low water c...

Page 15: ...Connect Steam Piping CONTINUED ...

Page 16: ...Connect Steam Piping CONTINUED ...

Page 17: ... sales office 1 Pipe boiler as shown on pages 14 through 16 2 Use 8 diameter reservoir pipe 3 Locate centerline of reservoir pipe 1 below 267 8 boiler waterline Connect Steam Piping CONTINUED CONDENSATE RECEIVER CAPACITY TABLE MINIMUM CONDENSATE RECEIVER CAPACITY GAL RECOMMENDED I B R GROSS CONDENSATE OUTPUT GALLONS 15 MIN 30 MIN 45 MIN 60 MIN FEED PUMPING RATE BOILER LBS STEAM CONDENSATE BOILER B...

Page 18: ...r distribution systems if certain minimum water temperatures are not maintained Contact local health department for more information To pipe tankless heater 1 Size piping no smaller than tankless heater inlet and outlet 2 Following controls furnished by others must be installed a Automatic mixing valve See FIGURE 12 Read at left b Flow regulating valve Size according to intermittent draw of tankle...

Page 19: ...unction box houses electrical connections for all boiler components P boilers have harnesses furnished A boilers are furnished with burner and limit harnesses All field provided high voltage wiring must be sheathed in flexible metal conduit Connect incoming line voltage HOT wire to service switch and neutral wire to white wire Field install equipment ground wire to green wire with wire nut Service...

Page 20: ...20 Connect Wiring CONTINUED ...

Page 21: ...essure Control Wiring Harness 2 Tankless Heater Control Wiring 3 Burner Disconnect Plug 4 Burner Wiring Harness 5 Low Water Cutoff Wiring Harness not furnished on A Boilers Boiler Wiring for Float Type LWCO FIGURE 13 Connect Wiring 21 ...

Page 22: ...22 Connect Wiring CONTINUED ...

Page 23: ...essure Control Wiring Harness 2 Tankless Heater Control Wiring 3 Burner Disconnect Plug 4 Burner Wiring Harness 5 Low Water Cutoff Wiring Harness not furnished on A Boilers 23 Connect Wiring Boiler Wiring for Probe Type LWCO FIGURE 14 ...

Page 24: ...ns with swing joints or copper tubing to prevent breaking in case the tank settles Make swing joints so they will tighten as tank settles Non hardening pipe joint compounds should be used on all threads Do not use Teflon tape as an oil pipe sealant It can cause valves to fail creating hazards Do not use compression fittings only flare fittings Underground pipe must be run in a casing to prevent oi...

Page 25: ...osts on strainers traps or vents Skim boiler only Do not clean old piping or leaks can occur Do not use petroleum based compounds in boiler system Damage to system components can result causing property damage 1 Provide 1 skim piping from skim tapping to floor drain Add a tee in piping to observe skim water level Raise waterline to midpoint of skim tapping 2 Fire burner to maintain water temperatu...

Page 26: ...quipment 8 Test pressure control While burner is operating move indicator on limit control below actual boiler steam pressure Burner should go off Raise setting on pressure control above steam pressure and burner should re ignite 9 Test low water cutoff s Follow control manufacturer s instructions for testing procedures Make sure burner goes off when control responds to low water condition Burner ...

Page 27: ... Using combustion test equipment adjust burner for a CO2 between 11 and 12 and 0 smoke b 0 01 to 0 02 W C draft in combustion chamber To connect SGO boilers to indirect fired water heaters Install and wire per water heater manual provided with water heater If boiler already has a tankless heater installed Remove tankless heater and install cover plate OR Leave tankless heater installed Drain coil ...

Page 28: ...s must be purchased through Weil McLain for the specific boiler as indicated in the list below Results from using modified or other manufactured parts will not be covered by warranty and may damage boiler or impair operation ...

Page 29: ...Parts Drawing ...

Page 30: ... SGO 6 19 231 2 261 4 SGO 7 221 8 261 8 293 8 SGO 8 251 4 291 4 321 2 SGO 9 283 8 323 8 355 8 DIMENSIONS mm BOILER MODEL NUMBER A B L SGO 3 342 9 428 7 SGO 4 422 1 508 0 SGO 5 504 9 587 2 SGO 6 482 6 584 2 666 7 SGO 7 561 8 663 4 746 2 SGO 8 641 4 742 9 825 5 SGO 9 720 9 822 4 904 7 Dimensions ...

Page 31: ...Dimensions CONTINUED ...

Page 32: ......

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