Boiler Guide
Basic Burner Setup Information Additional Information
Appliance
Model
Low Fire
Rate Baffle
Std. Air
Tube
Pump
Pressure
Recom.
Chassis
Approximate
Air Settings*
Insertion
Depth
Burner
Type
Head
Type
Static Plate/
Stop Screw
Nozzle
Type
Notes
Lennox (cont’d)
ELO183UF/150 AFG F4 3-3/8” 1.00 X 80°B — AF46WPHS 140 B2007 S-9 / B-0 5” 2
O20Q3-105/120 AFG F3 2-3/4” 0.85 X 80°B — AF50XN 100 B2007 S-8 / B-0 —
O23-175 AFG F6 2-3/4” 1.10 X 80°B — AF55YB 140 B2007 S-8 / B-0 5-5/8”
O23-210 AFG F6 2-3/4” 1.25 X 80°B — AF55YB 140 B2007 S-8 / B-0 5-5/8”
O2OQ3-105-1 AFG F3 2-3/4” 0.75 X 80°S — AF50XN 100 B2007 S-8 / B-0 —
O2OQ3-120-1 AFG F3 2-3/4” 0.85 X 80°S — AF50XN 100 B2007 S-8 / B-0 —
O2OQ3-140-1 AFG F3 2-3/4” 1.00 X 80°S — AF50XN 100 B2007 S-8 / B-0 —
O2OQ3-154-1 AFG F3 2-3/4” 1.10 X 80°S — AF50XN 100 B2007 S-8 / B-0 —
OF20Q3-105/120 AFG F3 2-3/4” 0.75 X 80°B — AF50XN 100 B2007 S-8 / B-0 —
OF20Q3-105/120R AFG F3 2-3/4” 0.75 X 80°B — AF55XN 100 B2007 S-8 / B-0 —
OF20Q5-140/154 AFG F6 2-3/4” 1.00 X 80°B — AF50YB 100 B2007 S-8 / B-0 —
OF20Q5-140/154R AFG F6 2-3/4” 1.00 X 80°B — AF50YB 100 B2007 S-8 / B-0 —
OF20Q5-175/210R AFG F6 2-3/4” 1.25 X 80°B — AF50YB 100 B2007 S-8 / B-0 —
OSR20Q3-105/120 AFG F3 2-3/4” 0.75 X 80°B — AF50XN 100 B2007 S-8 / B-0 —
OSR20Q3-105/120 AFG F3 2-3/4” 0.85 X 80°B — AF50XN 100 B2007 S-8 / B-0 —
OSR20Q5-140/154 AFG F6 2-3/4” 1.00 X 80°B — AF55YB 100 B2007 S-8 / B-0 —
O23-140 AFII 150 FB6 — 0.85 X 80°B — FBX64HIXS 140 B7210 6 5”
O23-154 AFII 150 FB6 — 1.00 X 80°B — FBX64HIXS 140 B7210 6 5”
O24Q5-140/154-5
AFII 150 FB6 — 0.85 X 80°B — FBX64HIXS 140 B7210 6 5-3/16”
OF24Q5-140/154-5
AFII 150 FB6 — 0.85 X 80°B — FBX64HIXS 140 B7210 6 5-3/16”
OF24Q5-140/154R-5
AFII 150 FB6 — 0.85 X 80°B — FBX64HIXS 140 B7210 6 5-3/16”
O23-105 AFII 85 FB3 — 0.65 X 80°B — FBX64HGXS 140 B7711 6 5”
O23-120 AFII 85 FB3 — 0.75 X 80°B — FBX64HGXS 140 B7711 6 5”
O23-70 AFII 85 FB0 — 0.50 X 80°A (D) — FBX64HFXS 100 B7711 3 5” 32
O24Q2-70-5 AFII 85 FB0 — 0.50 X 80°A — FBX64HFXS 100 B7711 3 5-3/16”
O24Q3-105/120-5 AFII 85 FB3 — 0.65 X 80°B — FBX64HGXS 140 B7711 6 5-3/16”
OF24Q2-70-5 AFII 85 FB0 — 0.50 X 80°B — FBX64HFXS 100 B7711 3 5-3/16”
OF24Q2-70R-5 AFII 85 FB0 — 0.50 X 80°A — FBX64HFXS 100 B7711 3 5-3/16”
O24Q3-105/120-5 AFII 85 FB3 — 0.65 X 80°B — FBX64HGXS 140 B7711 6 5-3/16”
O24Q3-105/120R-5
AFII 85 FB3 — 0.65 X 80°B — FBX64HGXS 100 B7711 6 5-3/16”
020RQ3-105-1 AR R4 3-3/8” 0.75 X 80°S — AR53XL 100 B3001 — — 23
020RQ3-120-1 AR R4 3-3/8” 0.85 X 80°S — AR53XL 100 B3001 — — 23
020RQ3-140-1 AR R4 3-3/8” 1.00 X 80°S — AR53XL 100 B3001 — — 23
020RQ3-154-1 AR R4 3-3/8” 1.10 X 80°S — AR53XL 100 B3001 — — 23
OF-20-105-1 AR R4 3-3/8” 0.75 X 80°S — AR53XL 100 B3001 — — 23
OF-20-120-1 AR R4 3-3/8” 0.85 X 80°S — AR53XL 100 B3001 — — 23
OF-20-140-1 AR R4 3-3/8” 1.00 X 80°S — AR53XL 100 B3001 — — 23
OF-20-154-1 AR R4 3-3/8” 1.10 X 80°S — AR53XL 100 B3001 — — 23
OS20Q3-105-1 AR R4 3-3/8” 0.75 X 80°S — AR53XL 100 B3001 — — 23
OS20Q3-120-1 AR R4 3-3/8” 0.85 X 80°S — AR53XL 100 B3001 — — 23
OS20Q3-140-1 AR R4 3-3/8” 1.00 X 80°S — AR53XL 100 B3001 — — 23
OS20Q3-154-1 AR R4 3-3/8” 1.10 X 80°S — AR53XL 100 B3001 — — 23
SLO185/105 NX 6-Slot — 0.65 X 60°A — NX70LHHS 150 B8001 3.75 5” 55
SLO185/79 NX 6-Slot — 0.50 X 60°A 32229 NX70LHHS 150 B8001 3 5” 55
SLO185UF/124 NX 6-Slot — 0.75 X 60°A — NX70LCHS 150 B8001 3.25 5” 55
58










