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Pump
Fig. 31
Selector Switch
30° 40° 50° 60° 70° 80°
Reset
Power On
Neon
Central Heating
Temperature Control
Fig. 33
24
Screw
Automatic
Air Vent
2
bar
Fig. 32
Off
2
On
Preheat
bar
Hot Water
Temperature Control
9.0
9.1
1. Reference should be made to BS 5449 Section
5 when commissioning the boiler.
2. Open the mains water supply to the boiler.
3. Open all hot water taps to purge the DHW
system.
4. Ensure that the filling loop is connected and
open, then open the heating flow and return
valves on the boiler.
5. Open the screw on the automatic air vent
(Fig. 31).
6. The system must be flushed in accordance with
BS 7593 (see Section 6.2) and the flushing agent
manufacturers instructions.
7. Pressurise the system to 1.0 bar then close
and disconnect the filling loop.
8. Turn the gas supply on and purge the system
according to BS 6891.
Pressure
9. Test for gas soundness.
Gauge
10. If at any time during commissioning it is
required to terminate a particular cycle, e.g. the
pump overrun period, turn the selector to the OFF
position and then back to either (
(Fig. 33).
Commissioning the Boiler
Commissioning the Boiler
) or (
)
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