Alpha E-Tec Plus 28, 33 and 38 - 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 to the correct pressure.
Refer to Section 6.1 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. 6.1) 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.
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: If a weather compensation sensor is fitted 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
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, 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. Solar operating mode (
). This function is activated automatically if the boiler detects a probe on the domestic hot
water inlet (optional) or if the 'Solar ignition delay' parameter is more than 0 seconds.
When there is a demand for hot water and the outlet water is hot enough or if there is 'Solar ignition delay' time, the
boiler does not switch on, the domestic hot water symbol ( ) appears on the display along with the flashing solar
function symbol (
).
When the water supplied by the solar system is at a temperature lower than what is set, or if the 'Solar ignition delay'
time has elapsed, the boiler switches on. At this point, the solar function symbol remains permanently on.
9. Operation with optional external sensor (
). In the case of a system with optional external sensor, 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.
10. '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.
11. '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.
12. 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 5.11.
29
To Next Page
Loading...
