Unical S 24, Руководство пользователя

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32
Inspections and maintenance performed
professionally and according to a regular
schedule, as well as the use of original
spare parts, are of the utmost importance
for fault-free operation of the boiler and
to guarantee its long life.
Yearly maintenance of the appliance is
mandatory in compliance with Laws in
force.
4
INSPECTIONS AND MAINTENANCE
TABLE OF RESISTANCE VALUES, ACCORDING TO THE TEMPERATURE, TO THE HEATING PROBE 11 (SR)
AND TO THE DOMESTIC HOT wATER PROBE 1 (SS) AND ANY HEATING RETURN PROBE 22 (SRR) see par. 4.5.
T°C 0 1 2 3 4 5 6 7 8 9
0 32755
31137 29607 28161 26795 25502
24278
23121 22025 20987
10
20003 19072 18189 17351 16557 15803 15088 14410 13765 13153
20
12571 12019 11493 10994 10519 10067 9636
9227 8837
8466
30
8112
7775 7454
7147 6855 6577 6311 6057 5815
5584
40
5363 5152 4951
4758 4574 4398
4230 4069 3915 3768
50
3627 3491 3362
3238
3119 3006
2897 2792
2692 2596
60
2504 2415 2330
2249
2171 2096 2023 1954 1888 1824
70
1762 1703 1646 1592 1539 1488 1440 1393 1348 1304
80
1263 1222 1183 1146 1110 1075 1042 1010
979 949
90
920
892
865
839
814 790 766
744 722
701
Relation between the temperature (°C) and the nom. resistance (Ohm) of the heating probe SR and of the domestic hot
water probe SS
Example: At 25°C, the nominal resistance is 10067 Ohm
At 90°C,the nominal resistance is 920 Ohm
4.1 - INSPECTION AND MAINTE-
NANCE INSTRUCTIONS
To assure long-term functioning of your appliance
and to avoid altering its approved status, only original
Unical AG S.p.A. spare parts must be used.
If a component needs to be replaced:
• Disconnect the appliance from the electrical mains
and make sure that it cannot be reconnected
accidentally.
• Close the gas shut-off valve upstream the boiler.
• If needed, and depending on the intervention to
be carried out, close any shut-off valves on the
flow and return line of the heating system, as well
as the cold water inlet valve.
• Remove the front casing from the appliance.
Once all maintenance operations are complete
resume boiler operation
• Open the heating flow and return pipes, as well
as the cold water inlet valve (if closed previously).
• Vent and, if necessary, restore the heating pres
-
sure until reaching a pressure of 0.8/1.0 bar.
• Open the gas shut-off valve.
• Switch the boiler back on.
• Make sure the appliance is gas tight and water
-
tight.
• Remount the front casing of the appliance.
Failure to perform Inspections and Main
-
tenance can entail material and personal
damage.