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9.0
Commissioning the Boiler
9.1
Commissioning the Boiler
Screw
1. Reference should be made to BS 5449 when
commissioning the boiler.
2. Ensure that the filling loop is connected and
Automatic
open, then open the heating flow and return
Air Vent
valves on the boiler.
3. Open the screw on the automatic air vent
(Fig. 30).
4. The system must be flushed in accordance
with BS 7593 and the flushing agent
manufacturers instructions.
5. Pressurise the system to 0.2 bar then close
Pump
and disconnect the filling loop.
Fig. 30
6. Turn the gas supply on and purge the system
according to BS 6891.
2
7. Test for gas soundness.
8. If at any time during commissioning it is
required to terminate a particular cycle, e.g. the
bar
Selector Switch
pump overrun period, turn the selector to the Off
Pressure
position and then back to the On position (
)
Fig. 31
Gauge
(Fig. 32).
30° 40° 50° 60° 70° 80°
2
bar
Power On
Neon
Central Heating
Temperature Control
Fig. 32
26
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