296
EN
cod. 3541V620 - Rev. 00 - 05/2021
ALHENA TECH H
Turning the boiler off and on
Changing from one mode to another is possible by repeatedly pressing the button
, following
the sequence shown in fig. 11.
A =
“Summer” mode -
B =
“Winter” mode -
C =
“Off” mode
To turn the boiler off, repeatedly press the button
until detail
C
of fig. 11 is displayed.
fig. 11- Turning the boiler off
When the boiler is turned off, the PCB is still powered. DHW and heating are disabled. The frost
protection system remains on. To relight the boiler, press the button
.
The boiler will be immediately ready in Winter and DHW mode.
B
The frost protection system does not work when the power
and/or gas to the unit are turned off. To avoid damage
caused by freezing during long shutdowns in winter, it is
advisable to drain all water from the boiler, the DHW circuit
and the heating system water; or drain just the DHW cir-
cuit and add a suitable antifreeze to the heating system,
as prescribed in sec. 2.3.
A
B
C
27
°C
29
°C
1.2
bar
OFF
37
°C
1.2
bar
OFF
OFF
1.2
bar
Summary of Contents for ALHENA TECH H
Page 45: ...45 IT cod 3541V620 Rev 00 05 2021 ALHENA TECH H fig 48 fig 49 fig 50 5 6 6...
Page 103: ...103 ES cod 3541V620 Rev 00 05 2021 ALHENA TECH H fig 48 fig 49 fig 50 5 6 6...
Page 160: ...160 RO cod 3541V620 Rev 00 05 2021 ALHENA TECH H fig 48 fig 49 fig 50 5 6 6...
Page 217: ...217 PL cod 3541V620 Rev 00 05 2021 ALHENA TECH H wygl d 48 wygl d 49 wygl d 50 5 6 6...
Page 231: ...B 231 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H...
Page 232: ...232 EL B CE IT ES RO PL GR cod 3541V620 Rev 00 05 2021 A ALHENA TECH H 8 8...
Page 238: ...238 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H FH Fh 2 10 0 FH 2 Stop...
Page 249: ...249 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 3 27 27 b09 1 1 2bar 0 7bar F37 3...
Page 250: ...250 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 2 2 1 2 2 B 2009 142 5 C 15 C A 2 3 B...
Page 253: ...253 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 2 5 B B 3 mm 3A...
Page 254: ...254 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H B HAR H05 VV F 3x0 75 mm2 8 mm B 230 V...
Page 262: ...262 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H B 2 7 B 0 5 lt B 37...
Page 271: ...271 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 1 1 41 2 41 B 1 42 42 OK NO 1 1...
Page 273: ...273 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 1 43 2 43 3 44 4 5 45 43 44 45 1 2 3 4 5...
Page 274: ...274 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H A B 1 2 5 49 2 6 50 5 46 47 1...
Page 275: ...275 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 48 49 50 5 6 6...
Page 276: ...276 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 1 2 3 4 51 52 1 1 2 2 3 3 4...
Page 277: ...277 EL cod 3541V620 Rev 00 05 2021 ALHENA TECH H 1 2 venturi 3 53 54 A 1 2 55 2 1 1 1 2...
Page 330: ...330 EN cod 3541V620 Rev 00 05 2021 ALHENA TECH H fig 48 fig 49 fig 50 5 6 6...
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