Gas Valve Calibration - Beretta Quadra Green 25 C.S.I. Installation And User Manual

JP5 Do not use
JP6
Enable night-time compensation function and continuous pump (only
with external sensor connected)
JP7
Enable management of low temperature/standard installations (see
above)
JP8
Do not use
4.6 Setting the thermoregulation (fig. 44 - graphs 1-2-3)
The thermoregulation only operates with the external sensor connected;
once installed, connect the external sensor (accessory available on re-
quest) to the special terminals provided on the boiler terminal board.
This enables the THERMOREGULATION function.
Selecting the compensation curve
The compensation curve for heating maintains a theoretical temperature of
20°C indoors, when the external temperature is between +20°C and -20°C.
The choice of the curve depends on the minimum external temperature
envisaged (and therefore on the geographical location), and on the delivery
temperature envisaged (and therefore on the type of system). It is carefully
calculated by the installer on the basis of the following formula:
envisaged delivery T. - Tshift
KT=
20- min. envisaged external T.
Tshift = 30°C standard installations
25°C floor installations
If the calculation produces an intermediate value between two curves, you
are advised to choose the compensation curve nearest the value obtained.
Example: if the value obtained from the calculation is 1,3 this is between
curve 1 and curve 1,5. Choose the nearest curve, i.e. 1,5.
Select the KT using trimmer P3 on the board (see multiwire wiring diagram).
To access P3:
- remove the housing,
- loosen the fixing screw on the instrument panel
- turn the instrument panel towards you
- loosen the fixing screws on the terminal board cover
- unhook the board casing
Live electrical parts (230 V AC).
The KT values which can be set are as follows:
standard installation: 1,0-1,5-2,0-2,5-3,0
floor installation 0,2-0,4-0,6-0,8
and these are displayed for approximately 3 seconds after rotation of the
trimmer P3.
TYPE OF HEAT REQUEST
Boiler connected to room thermostat (JUMPER JP6 not inserted)
The heat request is made by the closure of the room thermostat contact,
while the opening of the contact produces a switch-off. The delivery tem-
perature is automatically calculated by the boiler, although the user may
modify the boiler settings. Using the interface to modify the HEATING, you
will not have the HEATING SET-POINT value available, but a value that you
can set as preferred between 15 and 25°C. The modification of this value
will not directly modify the delivery temperature, but will automatically affect
the calculation that determines the value of that temperature, altering the
reference temperature in the system (0 = 20°C).
Boiler connected to a programmable timer (JUMPER JP6 inserted)
With the contact closed, the heat request is made by the delivery sensor, on
the basis of the external temperature, to obtain a nominal indoor tempera-
ture on DAY level (20°C). With the contact open, the boiler is not switched
off, but the weather curve is reduced (parallel shift) to NIGHT level (16°C).
This activates the night-time function. The delivery temperature is automati-
cally calculated by the boiler, although the user may modify the boiler set-
tings. Using the interface to modify the HEATING, you will not have the
HEATING SET-POINT value available, but a value that you can set as pre-
ferred between 25 and 15°C. The modification of this value will not directly
modify the delivery temperature, but will automatically affect the calcula-
tion that determines the value of that temperature, altering the reference
temperature in the system (0 = 20°C for DAY level, and 16°C for NIGHT
level).
4.7 Adjustments
The boiler has already been adjusted by the manufacturer during produc-
tion. If the adjustments need to be made again, for example after extraordi-
nary maintenance, replacement of the gas valve, or conversion from meth-
ane gas to LPG, observe the following procedures.
The adjustment of the maximum and minimum output, and of the maximum
and minimum heating and of slow switch-on, must be made strictly in the
sequence indicated, and only by qualified personnel only:
- disconnect the boiler from the power supply
- turn the heating water temperature selector to its maximum
- loosen the fixing screws (E) on the instrument panel (fig. 14)
- lift then turn the instrument panel towards you
- loosen the fixing screws on the cover (F) to access the terminal board
(fig. 16)
- insert the jumpers JP1 and JP3 (fig. 40)
- power up the boiler.
The three LEDs on the instrument panel flash simultaneously and the dis-
play shows "ADJ" for approximately 4 seconds.
Next change the following parameters:
1. Domestic hot water/absolute maximum
2. Minimum
3. Heating maximum
4. Slow switch-on
as follows:
- turn the heating water temperature selector to set the required value
- press the CO button using a small screwdriver included (fig. 26) and then
skip to the calibration of the next parameter.
Live electrical parts (230 V AC).
The following icons light up on the monitor:
1. during domestic hot water/absolute maximum calibration
2. during minimum calibration
3. during heating maximum calibration
4. during slow switch-on calibration
End the procedure by removing jumpers JP1 and JP3 to store these set val-
ues in the memory. The function can be ended at any time without storing
the set values in the memory and retaining the original values as follows:
- remove jumpers JP1 and JP3 before all 4 parameters have been set
- set the function selector to
- cut the power supply 15 minutes after it is connected.
Calibration can be carried out without powering up the boiler.
By turning the heating selection knob, the monitor automatically
shows the number of rotations, expressed in hundreds (e.g. 25 =
2.500 rpm).
The function for visualizing the setting parameters is activated by the func-
tion selector in summer and in winter, by pressing the CO button on the
circuit board, either with or without request for heat. This function cannot be
activated when connected to a remote control. Upon activating the function
the setting parameters are visualized in the order given below, each for 2
seconds. Each parameter is displayed together with its corresponding icon
and fan rotation speed measured in hundreds.
1. Maximum
2. Minimum
3. Max. heating
4. Slow ignition
5. Max. preset heating

GAS VALVE CALIBRATION

- Connect the boiler to the power supply
- Open the gas tap
- Set the function selector to
- Loosen the screws (E), remove the housing, then lower the instrument
panel towards you (fig. 14)
- Loosen the fixing screws on the cover (F) to access the terminal board
(fig. 16)
- Using a small screwdriver included, press the CO button (fig. 26)
Live electrical parts (230 V AC).
- Wait for burner ignition.
The display shows "ACO" and the yellow LED flashes. The boiler oper-
ates at maximum heat output.
The "combustion analysis" function remains active for a limited time (15
min); if a delivery temperature of 90°C is reached, the burner is switched
off. It will be switched back on when this temperature drops below 78°C.
- Insert the analyser probe in the ports provided in the air distribution box,
after removing the screws from the cover (fig. 41)
- Press the "combustion analysis" button a second time to reach the num-
ber of rotations corresponding to the maximum domestic hot water output
(table 1); the yellow LED continues to flash while the red LED is fixed
- Check the CO value: (table 3) if the value does not match the value
2
given in the table, use the gas valve maximum adjustment screw
- Press the "combustion analysis" button a third time to reach the number
of rotations corresponding to the minimum output (table 2); the yellow
LED continues to flash while the green LED is fixed
- Check the CO value: (table 4) if the value does not match the value
2
given in the table, use the gas valve minimum adjustment screw
- To exit the "combustion analysis" function, turn the control knob
- Remove the flue gas probe and refit the plug
- Close the instrument panel and refit the housing.
The "combustion analysis" function is automatically deactivated if the board
triggers an alarm. In the event of a fault during the combustion analysis
cycle, carry out the reset procedure.
(OFF/RESET)
(OFF/RESET) (monitor off)
ENGLISH
11