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** 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 Energy at combustion condition of 13.5% CO2 and -0.02" W.C. draft
overfire.
(5) Net I=B=R ratings are based on net installed radiation of sufficient quantity for the requirements of the building and nothing need be added for normal
piping and pick-up. Water ratings are based on a piping and pick-up allowance of 1.15. An additional allowance should be made for unusual piping and
pick-up loads. Consult local Weil-McLain Sales Office.
(6) I=B=R gross output.
(7) See page 10 for minimum breeching diameter.
(8) Listed draft losses are for factory-shipped settings.
SGO-W GOLD OIL WATER BOILER RATINGS (1)
ROUND DRAFT
I=B=R NET DOE MINIMUM FLUE BOILER LOSS
BOILER BURNER DOE HEATING I=B=R SEASONAL I=B=R CHIMNEY OUTLET WATER THRU
MODEL CAPACITY CAPACITY (4) RATINGS EFFICIENCY %
RECT ROUND HEIGHT
SIZE CONTENT BOILER
NUMBER GPH (3) MBH (2) (5) AFUE
IN IN FT
IN (7) GAL IN W.C. (8)
**-SGO-3W 0.95 115 100 85.3 8 x 8 6 15 7 14.6 .020
**-SGO-4W 1.20 145 126 85.0 8 x 8 6 15 7 16.3 .010
**-SGO-5W 1.45 175 152 85.0 8 x 8 7 15 7 18.8 .015
**-SGO-6W 1.75 212 184 85.0 8 x 8 7 15 7 21.2 .015
**-SGO-7W 2.00 242 210 85.0 8 x 8 8 15 7 23.7 .015
**-SGO-8W 2.30 266 (6) 231 — 8 x 12 8 20 7 26.2 .025
**-SGO-9W 2.55 295 (6) 257 — 8 x 12 8 20 7 28.6 .030
Ratings