Figure No. 4 Smart Fire SF 11, SF15, SF22, SF31 and SF41 boiler design diagram
11- Exchanger cleaning system lever; 12- Heating water stub pipe; 13- Exhaust gas breeching with
exhaust temperature sensor and Lambda probe (option); 14- Vacuum system limit switch socket;
15- Drainage stub pipe; 16- Exhaust fan casing; 17- Fumes manifold washout hole; 18- Vacuum
system engine power socket; 19- Return water stub pipe; 20- Fuel dispenser access hole cover;
SMART FIRE BOILER User Manual
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Rear View
Side View (from fuel dispenser
side)