Forney Igniter Configurator

Igniter Configurator

NFPA 85 sizing · instant budgetary quote

NFPA 85 Class 1 sizing (≥ 10% of main burner)

18 MMBtu/hr target · 10% of 180 MMBtu/hr

MAXFire® 140 capacity envelope

5–25 MMBtu/hr

Fuel supply pressure

20 psig available · 15–25 psig required

Cooling & combustion air

80 scfm @ 6" w.c. above windbox

Verify available fan margin at commissioning.

Igniter capacity is sized off the main burner per NFPA 85.

Main burner full-load input

180 MMBtu/hr

Required igniter capacity: 18 MMBtu/hr (10.0%)

Supply pressure (psig)

Insertion length (in)

Auto-selected from duty, fuel, and pressure — the same rules a Forney application engineer applies.

MAXFire® 140

5–25 MMBtu/hr

High-capacity Class 1 igniter — coal-to-gas conversions, warm-up duty.

TUBE 4" OD · Carbon steel, 12" SS furnace endGAS INLET 1 1/2" NPTAIR 80 SCFM @ 6" W.C.NOZZLE Straight or wide

Also feasible: MAXFire® 150

Pricing steps down at 2+, 4+, 8+ and 16+ igniters.

−8% volume tier

MF140-C1-NG-HESI-INT-Q8

8× MAXFire® 140 · ~6 wks ARO

Budgetary total

$207,920