27
Alpha E-Tec 15, 20, 25R - Commissioning
6.4 INITIAL LIGHTING - Refer to Fig. 6.1
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.
Refer to Section 6.1 Fill the System.
2. If connected to a sealed system the system should be filled to 1 bar when cold.
3. When the electricity supply is turned on the boiler will be either in the Standby or On mode. The On-Off/
Standby button is used to scroll between the modes or press and hold the button to turn off and shutdown
the boiler completely. 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.
With the boiler in the On mode press the Summer/Winter button (
) to scroll between modes.
5. Summer (
): In this mode the boiler will only heat a DHW cylinder. The desired hot water temperature can be set
using the domestic hot water control knob and is shown on the display. Refer to Sections 5.13 and 5.14.
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 domestic hot water control knob, the
central heating temperature is regulated via the central heating control knob with the temperature being shown on the
display.
Note: The domestic hot water knob will only function if the Alpha Diverter kit or DHW relay have 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 or DHW relay required) a gradient value of 1 to 9 is
displayed (see Fig. 6.1) 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 5.11
6. From this moment the boiler functions automatically. With no demand for heat (central heating or domestic hot water
cylinder heating) 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),
'INFO' button 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 or DHW relay 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 central heating control knob (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 until the symbol ( ) appears. From now on the boiler remains inactive with the
antifreeze function (if activated), pump anti-block function. Complete system frost protection is not 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.
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 't3' 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 5.11.
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