QB-180/300 Oil Burners — Series 2 For Weil-McLain GO, 66 & 68 Boilers Burner Manual Patent 5,961-316 Read all instructions before installing This manual must only be used by a qualified heating installer/service technician. Failure to comply could result in severe personal injury, death or substantial property damage. Installer Leave all documentation with burner for future reference. User Burner must be installed and annually serviced by a qualified installer/service technician.
QB-180/300 Oil Burners Series 2 — Burner Manual !!! IMPORTANT! Read this page first Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product. Indicates presence of hazards that will cause severe personal injury, death or substantial property damage. Indicates presence of hazards that will or can cause minor personal injury or property damage.
QB-180/300 Oil Burners Series 2 — Burner Manual Contents Hazard definitions .................................................................................... 2 Table of contents ...................................................................................... 3 1 Pre-installation considerations ................................................................ 4 2 Burner installation ...................................................................................
QB-180/300 Oil Burners Series 2 — Burner Manual 1 Pre-installation considerations Codes and standards • • • Install burner in accordance with NFPA 31, Standard for Oil-Burning Equipment and all local codes and regulations of authorities having jurisdiction. In Canada, refer to CSA B139, Installation Code for Oil-Burning Equipment. Regulations of these authorities take precedence over instructions in this manual.
QB-180/300 Oil Burners Series 2 — Burner Manual 2 Burner installation Figure 1 Burner components Ignition Wires “E” Clip Nozzle Adapter Wrench 3/16“ Oil Line GUN ASSEMBLY Includes: Adjustment Cam Adjustment Cam Captive Screw Electrode Assembly Top Leg of Spinner Centered Vertically Between Electrodes Electrode Assembly Spinner Assembly Nozzle Nozzle Adapter Oil Line Ignition Wires Nozzle Spinner Assembly Spinner Clamping Screw Nozzle Adapter 06502 Mounting burner 1.
QB-180/300 Oil Burners Series 2 — Burner Manual 2 Burner installation continued Table 1 Boiler model Burner nozzle selection Use only the nozzles specified. QB-180 burner nozzle size (Pump pressure is 150 psig) Preferred Alternates Air band setting Delavan Hago 0.65 70˚ A 0.65 70˚ B 0.65 70˚ AS 0.65 70˚ S 150 0.70/0.95 3.25 GO-3 0.85 70˚ A 0.85 70˚ B 0.85 70˚ AS 0.85 70˚ S 150 0.70/0.95 5.25 GO-4 1.00 70˚ B 1.00 70˚ B 1.00 70˚ AS 1.00 70˚ S 150 1.20 5.50 GO-5 1.25 60˚ B 1.
QB-180/300 Oil Burners Series 2 — Burner Manual Adjustment cam setting 1.75 1.45 1.2 0 Screw indicates setting 5 GPH 1.7 0 2.5 5 4. Reinstall gun assembly: a. Insert gun assembly into burner – do not force it. The gun assembly must be lifted and guided into air cone at end of air tube. b. Turn adjustment cam so that the larger end of the slot drops over the captive screw. c. Position gun assembly by rotating adjustment cam (Figure 3) to correct setting.
QB-180/300 Oil Burners Series 2 — Burner Manual 3 Fuel pumps and oil lines General All installations must comply with national or local codes and ordinances. Oil line must be piped properly to avoid risk of serious personal injury, death or substantial property damage. Follow these recommendations: • • • • • When installing oil lines, use continuous runs of heavy-wall copper tubing. Be sure all connections are airtight. Flared fittings are recommended. Do not use compression fittings.
QB-180/300 Oil Burners Series 2 — Burner Manual One-pipe oil systems (Figure 6) Figure 6 One-pipe oil system, typical Use one-pipe oil piping only when: • the fuel is gravity fed — or — • the fuel must be lifted no more than 8 feet. See Figure 6. (If the fuel lift is greater than 8 feet use twopipe fuel piping — Figure 7 on page 10.) • fuel suction line vacuum is less than 6" Hg for either a single-stage or two-stage burner fuel pump.
QB-180/300 Oil Burners Series 2 — Burner Manual 3 Fuel pumps and oil lines continued Figure 7 Two-pipe oil system, typical to a fuel lift height of no more than 10 feet. For greater lifts install a two-stage pump on the burner. Return line L Fuel suction line vacuum must not exceed 12" Hg for a single-stage pump or 17" for a two-stage pump. (lift) Bypass plug must be used with two-pipe installations. Oil tank Remove plug from plastic bag attached to fuel pump. Remove ¼" plug from return port.
QB-180/300 Oil Burners Series 2 — Burner Manual 4 Wiring, operation and service Wiring Service Wire the burner (and boiler) following instructions in the burner Control Supplement and the Boiler Manual. Start-up Read the sequence of operation and start-up procedures in the burner Control Supplement. Final Adjustments You must use test instruments to properly start, check and adjust burner. Failure to do so could result in severe personal injury, death or substantial property damage. 1.
QB-180/300 Oil Burners Series 2 — Burner Manual 5 Troubleshooting If burner does not start The relay in the primary control may not be pulling in — Check for: ❏ Broken wires ❏ Defective thermostat ❏ Dirty thermostat contacts ❏ Defective primary control The motor is out on thermal overload — Check for: If burner starts, but there is no flame ❏ Seized motor bearing ❏ Seized fuel pump ❏ Fan locked against housing ❏ Start winding burned out ❏ Defective starter switch ❏ Defective wiring Primary co
QB-180/300 Oil Burners Series 2 — Burner Manual If burner starts and has a smoky flame If you hear mechanical noise from the burner Check for: ❏ Insufficient combustion air ❏ Improper mixing of oil and air Check for: ❏ Flame impingement on target wall or crown sheet of boiler ❏ Insufficient draft ❏ Nozzle afterdrip due to faulty solenoid or cutoff valve ❏ Loose fan ❏ Defective motor bearings ❏ Air in oil line ❏ Pump and motor shaft misaligned ❏ Defective pump gears ❏ Obstructed suction line ❏
QB-180/300 Oil Burners Series 2 — Burner Manual 6 Parts list Item Number Description QB-180 QB-300 1 Motor with flange, 120 V.A.C.
QB-180/300 Oil Burners Series 2 — Burner Manual 17 18 22 15 16 14 19 13 12 20 11 10 21 9 8 7 5a (QB300) 3 2 1 4 5 5a (QB180) 23 6 Part number 644-500-065/0200 06510 15
Weil-McLain Limited Warranty for QB-180 and QB-300 Burners RESIDENTIAL OIL-FIRED BURNERS 3-Year Limited Warranty Weil-McLain warrants that its residential oil-fired burners are free from defects in material and workmanship for three years from the date of installation.
