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Effortless comfort, Maximum Efficiency
SGO
SGO
Oil Steam Boiler Series 4
Features
Optimized System
Oil-fired steam boiler with cast iron sections and tankless heater opening
High Capacity
Has large water content for longer steaming times
Venting Options
Two flue outlets- rear and top – for complete venting flexibility
Reliability
Includes service switch and Weil-McLain exclusive captured elastomer seals for added reliability
Easy Access
Quick open top and swing-away burner door with full chamber access increase visibility for inspection and servicing
thoughtful Design
Recessed target wall design protects unit from flue brushes
Energy Efficient
85% AFUE
Flexible Install
Available assembled or as a knockdown for installation areas with limited space
big on warmth, low on energy use
Engineered for comfort, designed for efficiency
Certified ENERGY STAR® and heat pump ready, this high-efficiency boiler delivers powerful, eco-friendly performance while keeping energy costs low.
Technical Specs
| MODEL | AHRI BURNER CAPACITY (GPH) | INPUT RATING (MBH) | DOE HEATING CAPACITY (MBH) | AFUE | NET AHRI STEAM RATINGS (MBH) | STEAM (SQ. FT.) | TANKLESS HEATER INTERMITTENT DRAW RATING (GPM) | DRAFT LOSS THROUGH BOILER (IN. W/C) | CHIMNEY SIZE RECTANGULAR (IN.) | CHIMNEY SIZE ROUND (IN.) | CHIMNEY SIZE HEIGHT (FT.) | APPROX. SHIPPING WEIGHT (LBS.) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SGO-3 | 0.95 | 133 | 114 | 85% | 86 | 358 | 3.25 | 0.02 | 8×8 | 6 | 15 | 600 |
| SGO-4 | 1.2 | 168 | 144 | 85% | 108 | 450 | 3.5 | 0.01 | 8×8 | 6 | 15 | 705 |
| SGO-5 | 1.45 | 203 | 174 | 85% | 131 | 546 | 3.75 | 0.015 | 8×8 | 7 | 15 | 820 |
| SGO-6 | 1.75 | 245 | 210 | 85% | 158 | 658 | 4 | 0.015 | 8×8 | 7 | 15 | 920 |
| SGO-7 | 2 | 280 | 240 | 85% | 182 | 758 | 4 | 0.015 | 8×8 | 8 | 15 | 990 |
| SGO-8 | 2.3 | 322 | 266 | – | 200 | 833 | 4 | 0.025 | 8×12 | 8 | 20 | 1090 |
| SGO-9 | 2.55 | 357 | 295 | – | 221 | 921 | 4 | 0.03 | 8×12 | 8 | 20 | 1195 |
Downloads
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