Weil-McLain 550-141-829/1201 Manual
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Weil-McLain 550-141-829/1201 Manual

Weil-McLain 550-141-829/1201 Manual

Series 3 oil-fired natural draft steam boiler
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SGO
SERIES 3 OIL-FIRED NATURAL DRAFT STEAM BOILER
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.
This Manual
Includes:
Installation
Start-Up

Boiler Parts

Part No. 550-141-829/1201

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Summary of Contents for Weil-McLain 550-141-829/1201

  • Page 1: Boiler Parts

    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. This Manual Includes: Installation Start-Up Boiler Parts Part No. 550-141-829/1201...

  • Page 2: Read This Page First

    Hazard Definitions The following terms are used to bring attention to the presence of hazards of various risk levels or to important information concerning product life. 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.

  • Page 3: Table Of Contents

    Table of Contents Read all instructions before installing. Failure to follow all instructions in proper order can cause severe personal injury, death or substantial property damage. Read This Page First ......2 Table of Contents .

  • Page 4: Before Installing Boiler

    Installations must comply with: • U.S. — State and local plumbing, heating and electrical codes. — National codes where applicable. • Canada — Canadian Standards Association, CSA B139, Installation Code for Oil-Burning Equipment. — CSA C22.1 Canadian Electrical Code Part One. —...
  • Page 5 Before Installing Boiler Provide air for combustion and ventilation: Adequate combustion and ventilation air: • Assures proper combustion. • Reduces risk of severe personal injury or death from possible flue gas leakage and carbon monoxide emissions. Do not install exhaust fan in boiler room. Older buildings with single-pane windows, minimal weather-stripping and no vapor barrier often provide enough natural infiltration and...

  • Page 6: Install Packaged Boiler

    Place boiler: 1. Remove boiler from pallet. Do not drop boiler or bump jacket on floor or pallet. Damage to boiler can result. Smaller sized boilers may be top heavy. Use caution when handling to avoid minor personal injury or property damage.

  • Page 7: Install Non-Packaged Boiler

    Install Packaged Boiler Change From Back Flue Outlet to Top Flue Outlet (Optional) Install Non-Packaged Boiler Fiberglass wool and ceramic fiber materials: • POSSIBLE CANCER HAZARD BY INHALATION • CAN CAUSE RESPIRATORY, SKIN AND EYE IRRITATION This product contains fiberglass wool and ceramic fiber materials.
  • Page 8 Place boiler: 1. Non-Packaged SGO-3 through 6 — position on site. Smaller sized boilers may be top heavy. Use caution when handling to avoid minor personal injury or property damage. a. Boiler is shipped for back flue outlet. To change to top flue outlet (see FIGURE 3): 1) Loosen two screws holding flue cap strap to collector hood.
  • Page 9 Install Non-Packaged Boiler CONTINUED...
  • Page 10 Install Packaged and Non-Packaged Boiler Install burner (also refer to instructions packed with burner): Burners designed for use with Weil-McLain 68 boilers must not be used on GOLD Oil boilers. Contact individual burner manufacturers for GOLD Oil applications. For P-SGO and A-SGO boiler: 1.
  • Page 11 Install Packaged and Non-Packaged Boiler...

  • Page 12: Connect Breeching

    General chimney requirements: • Designed for natural draft firing. Connect boiler to vertical chimney. Insufficient draft can cause flue gas leakage and carbon monoxide emissions, which will lead to severe personal injury or death. • Use vent material approved by local codes for oil-fired burners.

  • Page 13: Connect Breeching

    Connect Breeching CONTINUED Back Outlet Breeching Connection FIGURE 7 Top Outlet Breeching Connection FIGURE 8...

  • Page 14: Connect Steam Piping

    Piping system must be installed as shown, using minimum pipe sizes shown. Consult your Weil-McLain distributor or sales office before installing alternate piping. 2. Install relief valve vertically in “R” tapping on back of boiler. See FIGURE 9 or 10 and also refer to tag attached to relief valve for manufacturer’s instructions.
  • Page 15 Connect Steam Piping CONTINUED...
  • Page 16 Connect Steam Piping CONTINUED...

  • Page 17: Connect Steam Piping

    * Maximum time to when condensate returns to boiler. To size and install reservoir piping, see FIGURE 11 and Bulletin AE-8403 (available through your Weil-McLain distributor or sales office): 1. Pipe boiler as shown on pages 14 through 16. 2. Use 8" diameter reservoir pipe.

  • Page 18: Connect Tankless Heater Piping

    Hot Water Can Scald! • Consumer Product Safety Commission and some states recommend domestic hot water temperature of 130°F or less. • When installing an automatic mixing valve, selection and installation must comply with valve manufacturer’s recommendations and instructions. • Water heated to a temperature suitable for clothes washing, dish washing and other sanitizing needs will scald and cause injury.

  • Page 19: Connect Wiring

    Connect Wiring General wiring requirements: Electric shock hazard. Can cause severe personal injury or death if power source, including service switch on boiler, is not disconnected before installing or servicing. • Installations must follow these codes: — National Electrical Code, ANSI/NFPA 70, latest edition and any additional national, state or local codes.
  • Page 20 Connect Wiring CONTINUED...
  • Page 21 Connect Wiring Float-Type Low Water Cutoff Pressure Control Wiring Harness Tankless Heater Control Wiring Burner Disconnect Plug Burner Wiring Harness Low Water Cutoff Wiring Harness not furnished on “A” Boilers Boiler Wiring for Float-Type LWCO FIGURE 13...
  • Page 22 Connect Wiring CONTINUED...
  • Page 23 Connect Wiring Probe-Type Low Water Cutoff Pressure Control Wiring Harness Tankless Heater Control Wiring Burner Disconnect Plug Burner Wiring Harness Low Water Cutoff Wiring Harness not furnished on “A” Boilers Boiler Wiring for Probe-Type LWCO FIGURE 14...

  • Page 24: Connect Oil Piping

    General oil piping requirements: • Location and installation of oil tanks, oil piping and burners must follow: — NFPA 31, Standard for the Installation of Oil-Burning Equipment. — In Canada, CSA B139, Installation of Oil- Burning Equipment. — Local codes and regulations. —...

  • Page 25: Start-Up

    Follow information below to prevent severe personal injury, death or substantial property damage: • Do not use gasoline crankcase drainings or any oil containing gasoline. See burner manual for proper fuel oil. • Do not attempt to start burner when excess oil has accumulated, when unit is full of vapor or when combustion chamber is very hot.

  • Page 26: Check-Out Procedure

    Check off steps as completed: ❑ 1. Boiler properly filled with water? ❑ 2. Boiler piping checked for leaks (including tankless heater, if used)? ❑ 3. System vents operating properly? ❑ 4. Boiler properly skimmed? ❑ 5. Air purged from oil piping? Piping checked for leaks? ❑...

  • Page 27: Appendix

    Burner adjustments for “P” and “A” boilers: Final burner adjustments must be made using combustion test equipment to assure proper operation. Do not fire boiler without water or sections will overheat. 1. Refer to burner manual for start-up. 2. Allow boiler to heat to design condition. 3.

  • Page 28: Parts List

    Parts List Repair parts 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

    Parts Drawing...

  • Page 30: Dimensions

    DIMENSIONS - in. BOILER MODEL NUMBER SGO-3 — SGO-4 — SGO-5 — SGO-6 SGO-7 SGO-8 SGO-9 DIMENSIONS - mm. BOILER MODEL NUMBER SGO-3 — 342.9 SGO-4 — 422.1 SGO-5 — 504.9 SGO-6 482.6 584.2 SGO-7 561.8 663.4 SGO-8 641.4 742.9 SGO-9 720.9 822.4...
  • Page 31 Dimensions CONTINUED...

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