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310
EN
cod. 3542A221 - Rev 00 - 10/2022
ALHENA TECH K 50
Proceed in reverse order to refit the front panel. Make sure it is correctly hooked to the upper fas-
tenings and is correctly positioned at the sides. Once the screw
"1”
is tightened, the head must
not be below the lower reference fold (see fig. 42).
fig. 42- Correct position of front panel
Periodic check
To ensure proper operation of the unit over time, have qualified personnel carry out a yearly in-
spection, providing for the following checks:
•The control and safety devices (gas valve, thermostats, etc.) must function correctly.
•The fume exhaust circuit must be perfectly efficient.
•The sealed chamber must be tight.
•The air-fume end piece and ducts must be free of obstructions and leaks
•The burner and exchanger must be clean and free of deposits. Use suitable brushes for cleaning.
Never use chemical products.
•The electrode must be properly positioned and free of any deposits.
The electrode can be cleaned of incrustations only with a non-metallic brush, and must NOT
be sanded.
•The gas and water systems must be tight.
•The water pressure in the system when cold must be approx. 1 bar; otherwise bring it to that val-
ue.
•The circulating pump must not be blocked.
•The expansion vessels must be loaded.
•The gas flow and pressure must match that given in the respective tables.
•The condensate evacuation system must be efficient with no leakage or obstructions.
•The trap must be full of water.
•Check the quality of the water in the system.
•Check the condition of the exchanger insulation.
•Check the gas connection between the valve and Venturi.
•Replace the burner gasket if damaged.
•After checking, always control the combustion parameters (see "checking the combustion val-
ues").
OK
NO
1
1
Summary of Contents for ALHENA TECH 28 K 50
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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