26
Fig. 6.1
When commissioning the boiler, ensure the Benchmark Checklist at the back of these instructions is
completed.
6.1 FILL THE SYSTEM
1. Fill the central heating system from the feed tank or filling point.
2. To remove the air - Vent each radiator in turn, starting with the lowest in the system.
3. Check the system for water soundness.
Refer to Sections 4.8 and 4.9. Filling and Flushing the system.
4. Ensure that the condensate trap has been filled with water.
5. Make sure the external pump is properly vented to avoid damage to the pump.
6.2 BOILER CONTROLS - Fig. 6.1
Alpha E-Tec 15, 20, 25R - Commissioning
6 COMMISSIONING
6.3 TEST FOR GAS TIGHTNESS AND PURGE THE SUPPLY
1. With the boiler connected, pressure test the gas supply and inlet pipework
connected to the boiler for tightness in accordance with BS 6891.
2. Loosen the gas inlet pressure test point screw on the gas valve (see Fig. 6.2) and purge in accordance with BS 6891.
3. Retighten the test point screw and test for gas tightness. Close the boiler gas service cock.
1 On-Off/Standby button
2 Summer/Winter button
3 Reset button
4 Information button
5 Domestic hot water temperature
control knob with Alpha diverter kit or
DHW relay fitted
6 Central heating water temperature
control knob
7 N/A
8 DHW mode active
9 Boiler locked, reset via 'RESET' button
10 Flame present symbol and relative
power scale
11 Operating in summer mode
12 Operating in winter mode
13 Central heating mode active
14 Temperature indicator, boiler info and
error codes
15 Boiler in Stand-by mode
16 Climatic control fitted
17 Solar function (not used on this model)
18 Functioning with external temperature probe
active (optional)
19 Boiler connected to remote control (optional)
20 FlowSmart option (not used on this model)
21 Optional boiler controls (if fitted)
12
3
4
56
21
RESET
BOOST
bar
°C
x100rpm
8910
11 12
13
14
151617181920
RESET
INFO
RESET
BOOST
bar
°C
x100rpm
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