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Weil-McLain SGO-W SERIES 3 OIL-FIRED NATURAL DRAFT WATER BOILER manual

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Table of contents for the manual

  • Page 1

    SGO-W SERIES 3 OIL-FIRED NATURAL DRAFT WATER 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. Part No. 550-[...]

  • Page 2

    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 [...]

  • Page 3

    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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Before Installing B[...]

  • Page 4

    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. — Applicable local or provincial codes. Before selecting bo[...]

  • Page 5

    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 va[...]

  • Page 6

    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. Airborne fibers from these materials have been listed by the State of California as a possible cause of cancer through inhalation. Apply special c[...]

  • Page 7

    3. A-SGO-7, 8 & 9W — install flue collector hood (see FIGURE 2): Obtain gas-tight seal to prevent possible flue gas leakage and carbon monoxide emissions, leading to severe personal injury or death. a. Thread tinnerman clip on screw so that clip fits snugly in notch of hold-down lug. Screw must not turn. b. Remove paper on sealing rope. Start[...]

  • Page 8

    Install jacket (sizes 7 through 9 only): Before installing jacket, remove burner mounting door. See jacket instructions for details. Install boiler controls: See Control Tapping Table and FIGURES 3 and 4 to install controls. 1. Install tankless heater control if tankless heater is used. If not furnished, use operating control with maximum 10°F dif[...]

  • Page 9

    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. Install Non-Packaged Boiler CONTINUED Water Boiler Controls FIGURE 4 Water Pressure Gauge Tankless Heater Control Circulator Lim[...]

  • Page 10

    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. In their absence, refer to: — NFPA 31, Instal[...]

  • Page 11

    Top Outlet Breeching Connection FIGURE 6 Back Outlet Breeching Connection FIGURE 5 11 Connect Breeching CONTINUED Typical Location for Barometric Control (Also see Control Manufacturer’s Instructions) Typical Location for Barometric Control (Also see Control Manufacturer’s Instructions) Flue Pipe Bracket (One on Each Side of Pipe) Flue Pipe Bra[...]

  • Page 12

    General piping information: • If installation is to comply with ASME or Canadian requirements, an additional high temperature limit is needed. Install control in supply piping between boiler and isolation valve. Set control to a minimum of 20°F above set point of combination control. Maximum allowable set point is 220°F. Wire control as shown o[...]

  • Page 13

    Piping with DIAPHRAGM Expansion Tank FIGURE 7 Piping with CLOSED Expansion Tank FIGURE 8 13 Connect Water Piping CONTINUED Relief Valve Pump From System Isolation Valve Isolation Valve Isolation Valve Automatic Air Vent Cold Water Fill Relief Valve Closed Type Expansion Tank Pump To System From System Isolation Valve Isolation Valve Cold Water Fill[...]

  • Page 14

    Multiple Zoning With CIRCULATORS FIGURE 9 Multiple Zoning With ZONE VALVES FIGURE 10 Piping MULTIPLE ZONES: 1. Follow instructions on page 12 and 13 to install piping near boiler. 2. See FIGURE 9 or 10 to complete installation 3. Zoning with circulators: a. Size each circulator to individual circuit requirements. b. Remove circulator (when furnishe[...]

  • Page 15

    Piping with ZONE VALVES FIGURE 12 Piping with CIRCULATORS FIGURE 11 Recommended piping for systems requiring temperatures below 140°F: In most systems, this type of piping is not required. If system water temperature requirements are less than 140°F, such as radiant panels or converted gravity systems, use piping as shown in FIGURE 11 or 12. If s[...]

  • Page 16

    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, di[...]

  • Page 17

    Cold Hot Mixed Automatic Mixing Valve Studies have indicated that dangerous bacteria can form in potable water distribution system 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 cont[...]

  • Page 18

    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 19

    19 Connect Wiring CONTINUED[...]

  • Page 20

    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. — Information provided with burner and fuel pump. • If any part of [...]

  • Page 21

    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 22

    Installation and Service Certificate Check off steps as completed: ❏ 1. Boiler and heat distribution units filled with water? ❏ 2. Automatic air vent, if used, opened one full turn? ❏ 3. Air purged from system? Piping checked for leaks (including tankless heater, if used)? ❏ 4. Air purged from oil piping? Piping checked for leaks? ❏ 5. Fl[...]

  • Page 23

    Burner adjustments for “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. Using combustion test equipment, adjust burner for: a. CO 2 betw[...]

  • Page 24

    Fig. W-M Sales No. Description Part Number A Wide Front Section (7011) 316-700-245 B Regular Intermediate Section (7015) 316-700-065 C Intermediate Section w/Draw Rod Lugs (7016) 316-700-070 D Back Section w/7" Flue, Supply & 2" Return (7017) 316-700-265 E Section Replacement Kit (For 1 Joint, includes Seals, Rope, Adhesive and 386-70[...]

  • Page 25

    D Q K P J J G H G E G F R B A J J L M N S Parts Drawing 25 C[...]

  • Page 26

    DIMENSIONS - mm. BOILER MODEL NUMBER B L SGO-3W 342.9 428.7 SGO-4W 422.1 508.0 SGO-5W 504.9 587.2 SGO-6W 584.2 666.7 SGO-7W 663.4 746.2 SGO-8W 742.9 825.5 SGO-9W 822.4 904.7 DIMENSIONS - in. BOILER MODEL NUMBER B L SGO-3W 13 1 / 2 16 7 / 8 SGO-4W 16 5 / 8 20 SGO-5W 19 7 / 8 23 1 / 8 SGO-6W 23 26 1 / 4 SGO-7W 26 1 / 8 29 3 / 8 SGO-8W 29 1 / 4 32 1 /[...]

  • Page 27

    27 Dimensions CONTINUED Intermediate Back 6 1 / 4 [158.8] 7 DIA [177.8] 29 9 / 16 [750.9] 7 DIA [177.8] R[...]

  • Page 28

    ** Available only as an “A” unit. “A” boiler only for use with approved burners as listed with I=B=R. (1) SGO-W boiler designed with convertible vertical and horizontal flue outlet. (2) MBH refers to thousands of Btu per hour. (3) Based on 140,000 Btu/gal. (4) Based on standard test procedures prescribed by the United States Department of E[...]