Q87 Igniter

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Product Overview

The Q-87 is a self-contained Class 1 oil or gas igniter used for burner ignition, stabilization or boiler warm-up. It is available in capacities ranging from 8 to 30 MBTU/hr. The Q-87 igniter is suitable for both new and retrofi t applications in a wide variety of burner designs. For oil applications, the Q-87 igniter is designed for air, steam or mechanically atomized.

The Q-87 consists of a guide tube assembly, fuel gun and High Energy Spark Igniter (HESI). The guide tube assembly contains the working parts of the igniter and houses the fuel gun and HESI rod. A stainless steel diffuser is attached to the tip of the fuel gun guide tube to assist in providing a stable flame. The fuel gun has a retraction assembly that moves the gun into fi ring position and back into the guide tube when it is not in service. The guide tube transports cooling air from a low pressure air source to the igniter tip, keeping the gun tip and diffuser cool, as well as foreign material away from the tip.

A factory mounted NEMA-4 junction box with all on-board electrical devices pre-wired to terminals is a standard feature which reduces installation time.

A 12-joule HESI provides the ignition source for the fuel. The HESI features non-fouling surface gap spark plug that is easily replaced for maintenance by a threaded connection between the HESI tip and the HESI rod. Q-87 Oil or Gas Igniter

Product Overview Features & Benefits

As an option, a mount tube can be provided to support the igniter. The mount tube is typically welded to the burner front plate, and the igniter guide tube slides into the mount tube and is secured in place by a split clamping ring and packing gland assembly.


Fuel: No. 2 Oil Gas
Atomization Media: Air, Steam or Mechanical N/A
Atomizing Pressure: (Differential over oil pressure) 25 psig N/A
Guide Tube OD: 4 inches 4 inches
BTU Rating: 8 – 30 MBTU/hr
Fuel Pressure: 60 – 125 psig 10 – 30 psig (at full load)
Cooling / Combustion Air Flow: 80 SCFM
Cooling Air Pressure: 6 in. WC above furnace pressure
Length: As Required
Mount Tube OD: 4.5 inches 4.5 – 5.5 inches
Turndown: 2:1
Material of Construction: Guide Tube and Mount Tube – Carbon Steel
Furnace End of Guide Tube – 304 Stainless Steel
Diffuser Cone – 309 Stainless Steel
Retract Cylinder Air Pressure: 60 to 100 psig (HESI/oil gun)

HESI Specifications

Input Voltage: 120 to 240 VAC, 50/60 HZ
Output Voltage: 2000 VDC
Output Energy: 12 joules per spark
Spark Rate: 3 per second (approx.)
Duty Cycle: 50% at temp -18°C to 57°C (0°F to 135°F Ambient)

Q-87 Igniter Technical Bulletin
Publication Number 404006-17

Q87 Igniter

Features & Benefits

    which will provide ignition and stabilization under all burner light-off or operating conditions.
    In most applications, the Q-87 can be installed in your existing 4-inch ID mount tube.
    For oil applications, the Q-87 igniter can operate with either air, steam or mechanical atomization.
    The stainless steel air diffuser creates a low pressure zone which maintains a stable flame at the tip of the igniter.
    The 12-joule High Energy Spark Igniter (HESI) easily ignites the fuel during igniter start cycles.