Gas Conversion - Beretta MYNUTE X C Installer And User Manual

MYNUTE X
The boiler will operate at maximum heating output and it will be possible to regulate the
combustion.
ƒ Remove the screw and the cover on the air distribution box (
ƒ Insert the analysis probe adapter (
hole for the combustion analysis.
ƒ Insert the flue gases analysis probe into the adaptor.
ƒ Control the combustion, checking that the CO2 values match those in the table.
ƒ When the control is completed, remove the analyser probe and close the combustion
analysis sockets with the relative plugs and screw.
ƒ Put back and keep the analysis probe adapter supplied with the boiler in the
documentation envelope.
b
If the value displayed is different to that shown in the technical data table, DO NOT
CARRY OUT ANY ADJUSTMENTS OF THE GAS VALVE, ask assistance from the
Technical Assistance Centre.
b
The gas valve DOES NOT need adjusting and any tampering with it causes the
boiler to operate irregularly or even not at all.
b
When the combustion analysis is in progress all heat requests are inhibited and a
message is shown on the display.
When the checks are completed:
ƒ set the boiler to SUMMER or WINTER mode depending on the season
ƒ regulate the heat request temperature values according to the customer's needs.
IMPORTANT
The combustion analysis function is active for a maximum time of 15 minutes; the burner
shuts down if an outlet temperature of 95° C is reached. It will ignite again when the
temperature falls below 75° C.
b
In the case of a low temperature system we recommend carrying out the efficiency
test by taking hot water setting the boiler STATUS to SUMMER, opening the hot
water tap to full capacity and setting the temperature of the domestic hot water to
the maximum.
b
All controls must be carried out only by the Technical Assistance Centre.
4.18

Gas conversion

Conversion from a family gas to other family gas can be performed easily also when the
boiler is installed.
b
This operation must be carried out by professionally qualified personnel.
The boiler is delivered to operate with methane gas (G20).
To convert the boiler to propane gas (G31) proceed as follows:
ƒ access the technical parameters menu, as indicated in the paragraph "3.20 Access to
the parameters"
ƒ set the INSTALLER password
ƒ select the COMB menu and confirm the selection with
ƒ the display shows the scrolling text GAS TYPE
ƒ select GAS TYPE = 0 for METHANE gas
GAS TYPE = 1 for LPG
20
A-B ).
) located in the documentation envelope, into the
D
A
B
D
The boiler needs no further adjustment.
b
The conversion must be carried out by qualified personnel.
b
After the conversion has been carried out, apply the new identification label contained
in the documentation envelope.
4.19 Range rated
This boiler can be adapted to the heating requirements of the system, in fact it is possible to
set the maximum delivery for heating operation of the boiler itself:
ƒ power up the boiler
ƒ access the technical parameters menu, as indicated in the paragraph "3.20 Access to
the parameters"
ƒ select the CONF menu and confirm the selection with
ƒ the display shows the scrolling message RANGE RATED, enter the sub-menu by
pressing
ƒ set the maximum desired heating value (rpm) with the
Enter
the selection with
ƒ Once the required output has been set (maximum heating), put the value on the
self-adhesive label on the back cover of this manual. For subsequent controls and
adjustments, refer to the set value.
b
The calibration does not entail the ignition of the boiler.
The boiler is delivered with the adjustments shown in the technical data table.
Depending on plant engineering requirements or regional flue gas emission limits it is,
however, possible to modify this value, referring to the graphs at page 131.
4.20 Lights and faults
When there is a fault the icon blinks with a frequency of 0.5sec ON and 0.5sec OFF, the
backlight blinks for 1min with a frequency of 1sec ON and 1sec OFF after which it switches
off; while the bell continues to flash.
On the 4 digits of the display a scrolling message that describes the error code is shown.
When a fault occurs the following icons can appear:
- it comes on when there is a flame alarm (E010)
- RESET comes on when there is an alarm that requires the manual reset by the user
(flame lockout for example)
- comes on together with the icon
Moreover, when the WATER TRANSDUCER parameter is set to 1 and therefore there is a
water pressure transducer present, the pressure value, with the relative unit of measurement
should be displayed at the end of the following error messages:
• E041 WATER TRANSDUCER LOAD THE SYSTEM
• E042 WATER TRANSDUCER
• WATER PRESSURE HIGH CHECK THE SYSTEM
• WATER PRESSURE LOW CHECK THE SYSTEM.
Reset function
In order to reset the boiler's operation in the event of a fault, it is necessary to press the
RESET button. At this point, if the correct operating conditions have been restored, the boiler
will restart automatically. There are a maximum of 3 consecutive attempts at a release by
the REC10. In case of all the attempts are exhausted the definitive fault E099 occurs on the
display. The boiler will need to be unlock by cutting off and reconnecting the electrical supply.
and keys, confirming
DAY
, except for flame and water alarms.