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4.3 Maintenance instructions
Opening the casing
To open the water heater casing:
1.
Undo the two screws A (see fig. 11).
2.
Turn the casing.
3.
Lift and remove the casing.
B
Close the gas cock upstream before carrying out any operation inside the water
heater
A
1
A
fig. 11 - Opening the casing
Replacing batteries
To replace the batteries, proceed as described in fig. 12.
fig. 12 - Replacing batteries
Periodical inspection
To ensure proper operation of the unit over time, have qualified personnel carry out a
yearly inspection, providing for the following checks:
•
The control and safety devices must work properly.
•
The fume exhaust circuit must be perfectly efficient.
•
The fume ducts and terminal must be free of any obstacles and leaks
•
The burner and exchanger must be clean and free of deposits. For possible clean-
ing, do not use chemical products or wire brushes.
•
The electrodes must be free of deposits and correctly positioned.
=
=
fig. 13 - Electrode positioning
•
The gas and water systems must be tight.
•
The gas flow and pressure must match that given in the respective tables.
12
EN
3
2
cod. 3541C705 - Rev. 01 - 01/2018
5. TECHNICAL DATA AND CHARACTERISTICS
Table. 3- Legend - figures cap. 5
7 Gas inlet
8 DHW outlet
9 Cold water inlet
19 Combustion chamber
20 Burner assembly
27 Copper exchanger
42 DHW temperature sensor
44 Gas valve
49 Safety thermostat
5.1 General view and main components
126
49
20
82
188
42
44
8
fig. 14 - General view
5.2 Hydraulic diagrams
49
42
fig. 15 - Water circuit
SKY C B
78 Anti-backflow device
82 Detection electrode
83 Electronic controller
126 Contact fume thermostat
188 Ignition electrode
358 DHW inlet Solar thermostat
359 Flow switch
372 Batteries
7
9
358
8
9
78
27
19
358
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