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14a Make Final Adjustments
To fill water boilers:
1.Close manual air vents and drain cocks.
2.Fill to correct system pressure. Correct pressure will vary with each installation.
3.Starting on lowest floor, open air vents one at a time until water squirts out. Close vent. Repeat with remaining vents.
4.Refill boiler to correct pressure.
To fill steam boilers:
1.Do not fill (except for leakage test) until boiler is ready to be fired.
2.Fill to normal waterline, halfway up gauge glass.
3.Recommend boiler water pH 7.0 to 8.5.
Adjust burner and breeching damper:
Make final burner adjustments using combustion test equipment
to assure proper operation. Do not fire boiler without water. Sections will overheat, damaging boiler and resulting in severe property damage.
1.Lock open breeching damper.
2.Refer to burner manual for
3.Let burner advance to high fire. Heat boiler to design conditions.
4.Using combustion test equipment, adjust burner for:
a.12% (± 1/4%) C02 for No. 2 fuel oil, 0 smoke.
b.9 - 10% C02 natural gas, CO in flue gas to not exceed 100 ppm (0.01%).
5.Adjust breeching damper to assure 0.1" W. C. positive pressure at test opening. Secure damper.
6.Adjust barometric draft control, when used, to design conditions.
7.Check per steps 4 through 6. Adjust as required.
8.Plug test opening with 1/8" brass plug.
Test Plug
Breeching
damperLock
(Slide down to open damper)
Figure 29 Breeching Damper Adjustment
Part No. | 25 |
