Beretta Mynute Green E 30 R.S.I. Manual Para El Instalador Y El Usuario página 13

TYPE OF HEAT REQUEST
If an ambient thermostat is connected to the boiler (JUMPER 6 not
on) (fig. 40)
The heat request is made by the closure of the room thermostat con-
tact, while the opening of the contact produces a switch-off. The de-
livery temperature is automatically calculated by the boiler, although
the user may interact with the boiler. Using the interface to modify the
HEATING, you will not have the HEATING SET-POINT value availa-
ble, 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 tem-
perature, but will automatically affect the calculation that determines
the value of that temperature, altering the reference temperature in
the system (0 = 20°C).
If an hourly timer is connected to the boiler (JUMPER JP6 not on)
(fig. JP6 41)
With the contact closed, the heat request is made by the delivery
probe, on the basis of the external temperature, to obtain a nominal
ambient temperature on DAY level (20°C). The opening of the con-
tact does not produce a switch-off, but a reduction (parallel transla-
tion) of the climatic curve on NIGHT level (16°C).
This will activate the night time function.
The delivery temperature is automatically calculated by the boiler,
although the user may interact with the boiler.
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 tem-
perature, but will automatically affect the calculation 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. However,
if adjustments must be repeated, for example after special mainte-
nance, replacement of the gas valve or conversion from methane gas
to LPG or propane air, observe the following procedures.
The adjustment of the maximum and minimum output, the maximum
heating and slow ignition, must be made strictly in the sequence indi-
cated, and by qualified personnel only:
-
disconnect the boiler power supply
- turn the heating water temperature selector to its maximum, selec-
tor in correspondence to + (fi g. 42)
- lift and then turn the instrument panel upside down
- remove the electrical parts inspection cover, undoing the 2 fi xing
screws
- insert jumpers JP1 and JP3 (fi g. 43)
- power the boiler. ADJ" will appear on the display for about 4 sec
Modify the following parameters:
1 absolute/domestic maximum
2. minimum
3 maximum heating
4. slow ignition
as described below:
- turn the heating water temperature selector to set the desired value
- press the CO button (fig. 44) and move on to calibration of the next
parameter.
Live electrical parts (230 Vac).
The following icons will appear on the display:
1. during absolute/domestic maximum calibration
2. during minimum calibration
3. during heating maximum calibration
End the procedure removing jumpers JP1 and JP3 to store the set
values.
the function can be terminated at any time without storing the set
values and maintaining the previously set ones:
removing jumpers JP1 and JP3 before all 4 parameters have been
set
- turning the mode selector to
- disconnecting the mains voltage.
- 15 minutes after activation.
OFF/RESET.
The calibration does not entail the ignition of the boiler.
By rotating the heating setpoint selector knob, the number of
rotations expressed in hundreds (e.g. 25 = 2500 rpm) is auto-
matically displayed.
The calibration parameter display function is activated with the se-
lector on summer or winter and pressing the CO button on the card
regardless of whether or not there is a heat request.
The function cannot be activated if a remote control is connected.
When this function is activated, the calibration parameters each ap-
pear (in the order shown below) for 2 seconds. The relative icon is
indicated in line with each parameter, and the fan rotation value (ex-
pressed in hundreds)
1. Maximum
2. Minimum
3. Maximum heating
4. Adjusted maximum heating
GAS VALVE CALIBRATION
- Electrically power the boiler.
- Open the gas tap.
- Set the mode selector to
- Remove the shell, turn the instrument panel upside down and re-
move the electrical parts inspection cover to access the "CO" but-
ton (fig. 45).
Press the "CO" button once.
Live electrical parts (230 Vac).
- Wait for the burner to ignite.
"ACO" appears on the display. The boiler operates at maximum
heating output.
The "combustion analysis" function remains active for a limited
time of 15 minutes; if a delivery temperature of 90°C is reached the
burner will extinguish. It will reignite when this temperature drops
below 78°C.
- insert the analyser probes in the prescribed positions on the air box
after removing the screws and the cover.
- Press the "combustion analysis" button a second time to reach the
number of revolutions that corresponds to the maximum domestic
hot water output (table 1).
- Check the CO value: (table 4) if the value does not comply with
2
the indications in the table act on the gas valve max adjustment
screw (fig. 45).
- Press the "combustion analysis" button a third time to reach the
number of revolutions that corresponds to the minimum output (ta-
ble 2).
- Check the CO value: (table 5) if the value does not comply with
2
the indications in the table act on the gas valve min adjustment
screw (fig. 45).
- To exit the "combustion analysis" function turn the command knob.
- Extract the gases analysis probe and refit the plug.
- Close the instrument panel and reassemble the shell.
The "combustion analysis" function automatically deactivates if the
card generates an alarm. In the event of a fault during the combus-
tion analysis phase, carry out the reset procedure, acting on the
mode selector as described in section 4.4.
Table 1
Maximum
domestic hot
water fan gas (G20)
rotations
30 R.S.I.
Table 2
Minimum number
of fan rotations gas (G20)
30 R.S.I.
Table 3
Maximum number
of heating fan
gas (G20)
rotations
30 R.S.I.
Mynute Green E R.S.I.
OFF/RESET (display off).
Methane Liquid gas
(G31)
56 56 rpm
Methane Liquid gas
(G31)
14 14 rpm
Methane Liquid gas
(G31)
47 47 rpm
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