Ariston Clas System 28 FF - Checking the Maximum C.h. Power; Soft Light Adjustment; Ignition Delay Adjustment; Adjustment the Maximum Absolute Heating Power

30
commissioning
The information relating to the menus and the individual
parameters are indicated on the display.
To access Menu 2, open the cover and proceed as follows:
1. Press the M
ENU/OK button; the fi rst fi gure
0
0
00
will fl ash on
the display.
2. Press the “+” button to select menu “
2
2
00”
3. Press the MENU/OK button; the second fi gur on the display will
fl ash and the access code “
2 1
1
0
” will be requested.
Caution! The menus reserved for qualifi ed technicians may
only be accessed after setting the access code.
4.
Press the MENU/OK button;
222
will appear on the display unit.
5. Press the “+” button to select code
234
234.
6. Press the M
ENU/OK button to select the sub menu; the second
fi gure
“
2 2
2
0
” will fl ash.
7. Press the “+” button to select the sub menu, for example:
“
2 3
3
0
”.
8. Press the M
ENU/OK button to access the sub menu parameters;
the third fi gure “
23 0
0”
will fl ash.
9. Turn the encoder to select the parameter; the text on the
display will indicate the title of the pre-selected parameter
“
23 1
1
- Max. Adjustable Heating Power Level”.
10. Press the “+” or “-” button to access the parameter; the display
will indicate the value, e.g “
76
”.
Note: The parameter value will be displayed for 20 seconds,
then will begin to fl ash in alternation with the parameter, e.g.
“
70
70
>
231
231”.
11. Press the “+” or “-” button to select the new value, e.g. “
75
”.
12. Press M
ENU/OK to save the change or press ESC to exit without
saving.
To exit, press the ESC button until the normal display screen is
restored.
Accessing the settings and adjustment menus
menu 2 - Boiler parameters
submenu 3 - parameter 1
Maximum Heating Power adjustment
submenu 2 - parameter 0
Soft light Ignition
submenu 3 - parameter 5 and 6
Heating ignition delay
sottomenu 3 - parametro 0
Maximum Absolute Heating Power
(This parameter must be changed only to change gas or
replace P.C.B.)
Checking maximum absolute heating power
(ONLY IN CASE OF GAS CHANGE OR P.C.B. REPLACEMENT)
To check/modify the maximum absolute heating power, access
the gas valve and proceed as follows:
1. Loosen screw “2” (Fig. b) and insert the pressure gauge
connection pipe into the pipe tap.
2. Disconnect the air chamber compensation tube.
3. Switch the boiler on at maximum heating power, enabling the
“chimney sweep” function (press the
key for 5 seconds;
the display shows t --.
The supply pressure should correspond to the value shown in
the “Gas Settings” table according to the type of gas for which
the boiler is designed. If it does not correspond, access menu
2/sub menu 3/parameter 0 and press the + and - buttons to
modify the value until the pressure indicated in the Gas Table
has been reached.
4. When the check is complete, tighten screw “2” and make sure it
is securely in place.
5. The “chimney sweep” function is deactivated either automatically
after 10 minutes or when the E
SC button is pressed.
Checking slow ignition power
The soft light can be adjusted between the maximum power
(shown on the display as “99”, ) and the minimum power (shown
on the display as “0”, ).
Change the parameter if the outlet pressure from the gas valve
in the ignition phase (measured when the boiler is in hot water
heating operation) does not coincide with the values shown in
the Gas Table:
To check the slow ignition power, access menu 2/sub menu 2/
parameter 0.
If needed, change the parameter value until suitable pressure is
achieved.
Heating ignition delay adjustment
This parameter – menu 2/sub menu 3/parameter 5 - can be used
to manually (0) or automatically (1) set the delay time before the
subsequent reignition of the burner after it has switched off on
reaching the desired temperature.
By selecting manual, it is possible to set the delay in minutes using
the successive parameter (menu 2/sub menu 3/parameter 6), to a
time between 0 and 7 minutes.
Automatic selection means that the boiler will establish the delay
time based on the set-point temperature.
Maximum Heating Power adjustment
The maximum heating power can be adjusted to between the
maximum power (shown on the display as “99”, ) allowed by the
boiler and the minimum power (shown on the display as “0”, ).
To check the maximum heating power, access menu 2/sub menu
3/parameter 1, check the value and, if necessary, modify it as
indicated in the Heating Power Adjustment table.
PROGRAMMING
BUTTON
MENU/OK
BUTTON