301
EN
cod. 3542A221 - Rev 00 - 10/2022
ALHENA TECH K 50
3. Service and maintenance
B
All adjustments described in this chapter can only be
carried out by qualified personnel.
3.1 Adjustments
Gas conversion
The unit can work with
2
nd
or
3
rd
family gases, which is clearly indicated on the packaging and on
the data plate of the unit. If the unit has to be used with a gas other than the factory-set one, pro-
ceed as follows:
1.Disconnect the power supply and turn off the gas.
2.Remove the front panel (
see *** 'Opening the front panel' on page 309 ***
).
3.Apply the plate for LPG (contained in the document bag) near the technical data plate.
4.Refit the front panel and turn on the power to the boiler.
5.
Modify the parameter for the type of gas
:
•Access the
Main menu [MENU]
with the button
.
•Follow the path
installer menu [Service]
>enter the
Password 1234
(see fig. 17) >
parame-
ters menu [TSP]
.
•With the
and
heating
buttons, select the parameter
b03
and set the corresponding val-
ue with the
and
DHW
buttons:
0 =G20
1 =G30/G31
2 =G230
•To confirm, press the button
.
•Turn the power off for 10 seconds and then back on.
•Wait until the
Fh
mode ends. To stop this mode, refer to fig. 10.
•Put the boiler in standby mode and activate the
calibration mode [AUTO SETUP]
(see ***
'IMPORTANT' on page 302 ***).
Checking the combustion values
MAKE SURE THE PANEL OF THE SEALED CHAMBER IS CLOSED AND THE INTAKE/FUME
DISCHARGE DUCTS ARE FULLY ASSEMBLED.
1.Put the boiler in heating or DHW mode (with appropriate draw-off for disposal) for at least 2 min-
utes.
2.Activate the
Test [Test]
mode (see *** 'Test mode [Test]' on page 303 ***).
3.Using a combustion analyzer connected to the arrangements located on the starting accesso-
ries above the boiler, with boiler operating at maximum and minimum power check that the CO
2
content in the fumes matches that indicated in the following table.
4.If the combustion values do not match, adjust the Offset values in the
Test mode
as described
in the following paragraph.
Case studies
G20
G30/G31
G230
A
New boiler (first ignition/conversion or electrode replacement)
7.5%-9.9% 9%-11.5% 9%-11.5%
B
Boiler with at least 500 hours of operation
9%+/-0.8
10%+/-0.8 10%+/-0.8
Summary of Contents for 0T4T4AWD
Page 217: ...B 217 EL cod 3542A221 Rev 00 10 2022 ALHENA TECH K 50 8 8...
Page 223: ...223 EL cod 3542A221 Rev 00 10 2022 ALHENA TECH K 50 FH Fh Stop 10 0 FH 2 Stop...
Page 234: ...234 EL cod 3542A221 Rev 00 10 2022 ALHENA TECH K 50 2 2 1 2 2 B 2009 142 5 C 15 C A 2 3 B...
Page 237: ...237 EL cod 3542A221 Rev 00 10 2022 ALHENA TECH K 50 2 5 B B 3 mm 3A...
Page 238: ...238 EL cod 3542A221 Rev 00 10 2022 ALHENA TECH K 50 B HAR H05 VV F 3x0 75 mm2 8 mm B 230 V...
Page 241: ...241 EL cod 3542A221 Rev 00 10 2022 ALHENA TECH K 50 2 6 B 200 Pa H1 C AUTO SE TUP...
Page 247: ...247 EL cod 3542A221 Rev 00 10 2022 ALHENA TECH K 50 B 2 7 B 0 5 lt B 37...
Page 256: ...256 EL cod 3542A221 Rev 00 10 2022 ALHENA TECH K 50 3 3 B B 1 1 41 2 41 2 3 1 1...
Page 257: ...257 EL cod 3542A221 Rev 00 10 2022 ALHENA TECH K 50 1 42 42 1 bar venturi OK NO 1 1...
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