27
Alpha E-Tec S 20 and 30 - Commissioning
5.4 INITIAL LIGHTING - Refer to Fig. 5.1
When the system has been filled and vented, the boiler can then be turned on and commissioned.
1. Before turning on the gas and electrical supplies check the heating system is filled to the correct pressure. Refer to
Section 5.1 Fill the System. The pressure gauge on the right of the control panel indicates the heating system pressure.
When the boiler is cold the needle should be within the green band.
2. With the gas and electrical supplies to the boiler off, ensure that the mains water inlet valve and the central heating flow
and return valves are open.
3. Turn on the gas and electrical supplies to the boiler.
Press the (
) button, (item 1 in Fig. 5.1) repeatedly to scroll between the three modes Standby ( ), Summer ( )
or Winter (
) or press and hold it in for 8 seconds to turn the boiler off (when off a dot appears on the display).
Note: This does not isolate the electricity supply to the boiler.
4. Ensure all external controls are calling for heat.
If the optional controls are fitted, refer to the instructions supplied, and ensure they are in an 'on' mode.
5. Summer (
): In this mode the boiler will only produce domestic hot water. The desired hot water temperature can be
set using the domestic hot water up and down (
) buttons and is shown on the display.
Note: The Summer mode will only function if the Alpha Diverter Kit has been fitted. When using a standard 'Y' or 'S'
plan system the boiler MUST BE left in Winter mode.
Winter (
): In this mode the boiler will supply domestic hot water and central heating depending on the request from
any controls fitted. The domestic hot water temperature is always regulated via the up and down buttons ( ), the
central heating temperature is regulated via the central heating up and down buttons ( ) with the temperature being
shown on the display.
Note: The domestic hot water buttons will only function if the Alpha Diverter Kit has been fitted. When using a standard
'Y' or 'S' plan system the boiler MUST BE left in Winter mode.
Note: If a weather compensation sensor is fitted (Alpha Diverter Kit required) a gradient value of 1 to 9 is displayed (see
Fig. 5.1) when adjusting the central heating temperature. This is because the boiler output is modulated according to
outside temperature. Refer to external sensor instructions for further information on this feature and Section 4.11
6. From this moment the boiler functions automatically. With no demand for heat (central heating or domestic hot water
production) the boiler goes to 'standby' function.
Each time the burner ignites, the flame present symbol (
) is displayed together with the relative strength of the
flame (output power).
7. Operation with Climatic control (Optional). If the Climatic control is connected (Apha Diverter Kit required), the
(
) symbol will appear on the display. The boiler regulation parameters can be set via the Climatic control panel and
the 'RESET' button remains active on the boiler control panel, along with the standby button (
) ('off' mode only)
and the display where the functioning state is shown.
Note: If the boiler is switched 'off' the Climatic control will display the connection error symbol 'ERR>CM', the Climatic
control is however powered constantly so as not to lose the stored programs.
8. Operation with optional external sensor (
). In the case of a system with optional external sensor (Alpha Diverter
Kit required), the boiler flow temperature for central heating is managed by the external sensor depending on the
external temperature measured. The flow temperature can be modified by selecting the functioning curve using the
(
) buttons (or on the Climatic control panel, if connected to the boiler) selecting a value from '0 to 9'.
When an external sensor is used, the relative symbol (
) will appear on the display. In the central heating mode, if
the temperature of the water in the system is sufficient to heat the radiators, the boiler can only function when the pump
is activated.
9. 'Stand-by' mode. Press (
) button repeatedly until the symbol ( ) appears. From now on the boiler remains
inactive with the antifreeze function, pump anti-block function and 3-way and signalling of any anomalies guaranteed.
Note: This does not isolate the electricity supply to the boiler.
10. 'Off' mode. By holding the (
) button in for 8 seconds, the display switches off and the boiler is off completely.
The safety functions are not guaranteed in this mode.
Note: While not having functions active, in these conditions the boiler must be considered still live. This state is
displayed by a 'dot' lit in the centre of the display.
11. Display functioning. The display lights up while the control panel is being used, after a set inactivity period the
brightness drops until only the active symbols are displayed. The lighting mode can be varied via parameter 't8' in the
PCB programming menu.
For any controls fitted please refer to the instructions supplied with the controls for connection and operation details and
Section 4.11.
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