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6
COMMISSIONING
When commissioning the boiler, ensure the Benchmark Checklist at the back of these instructions is
completed.
6.1
FILL THE SYSTEM
1.
The boiler is fitted with an automatic air vent positioned on the pump (see Fig. 7.6), ensure that the vent is always open.
2.
Open the central heating flow and return valves (operating lever in-line with valve) (see Fig. 5.4).
3.
Open the fill point valves on the filling loop until water is heard to flow (see Section 4.7).
4.
To remove the air - Vent each radiator in turn, starting with the lowest in the system.
5.
Check the operation of the safety valve (see Fig. 7.6) by turning the head anti-clockwise until it clicks. The click is the
valve lifting off its seat allowing water to escape from the system - check that this is actually happening.
6.
Continue to fill the system until the pressure gauge indicates 1.0 bar. Close the fill point valve and check the system for
water soundness. Disconnect the filling loop from the mains supply.
Water may be released from the system by manually opening the drain point (see Fig. 7.6) until the system design
pressure is obtained. The system design pressure (cold) should be between 0.75 and 1.25 bar.
Refer to Sections 4.7 and 4.8. Filling and Flushing the system.
7.
Open the cold water mains inlet valve (see Fig. 5.4). Turn on all hot water taps and allow water to flow until no air is
present. Turn off taps.
8.
Ensure that the condensate trap has been filled with water.
6.2
BOILER CONTROLS - Fig. 6.1
4
5
°C
RESET BOOST
RESET
INFO
3
2
1 - Off/Stand-by/Summer/Winter button
2 - Information button
3 - Reset Button
4 - Reduce DHW set temperature
5 - Increase DHW set temperature
6 - Increase heating system set temperature
7 - Reduce heating system set temperature
8 - Heating system pressure gauge
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.
28
Alpha E-Tec Plus 28, 33 and 38 - Commissioning
6
7
8
1
9 - Domestic hot water active
10 - Remote Climatic controller fitted
11 - Boiler fired and power level
12 - External weather probe fitted
13 - Active solar supply (pre-heated inlet)
14 - Central heating active
15 - Central heating temperature indicator
16 - Boiler in Stand-by mode
9
10
11
RESET BOOST
22
21
20
Fig. 6.1
12
13
14
15
°C
16
17
19
18
17 - Winter mode – heating and hot water
18 - Summer mode – DHW only
19 - Temperature/info/code - display
20 - Boost function active
21 - Boiler locked - reset required
22 - DHW temperature indicator
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