Accorroni GREEN 220, Руководство по установке

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CALIDO1
DHW heat pump with tank
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If the unit is disconnected from the power supply, the disinfection cycle will not occure. If the unit has been without power
for an extended period of time, DO NOT use the water contained in the unit.
It is recommended that the tank be emptied and all water contained in the system piping carrying the DHW be drained. It
is recommended to let the water flow not only to renew all the water in the pipes but also for a sufficient time to flush the
pipes. This necessary "flushing" time is inversely proportional to the temperature of the water flowing through the pipes.
The disinfection cycle occurs only inside the water tank. Therefore, it’s recommended to perform a recirculation of the water
system especially for disinfecting all the contained water. If cannot be possible, according to the preceding warning, it is
recommended to let the water system to flow for a enough for cleaning the pipes and renewing the water.
If the parameter 5 (t2) is set to be 0, the disinfection function is disabled. Such operation is strictly unrecommended; the
manufacturer declines any responsibility for the data caused by a lack or incorrect unit disinfection. If you desire to disable
the disinfection cycle, you should ask the maintainer about the consequences that may arise from this operation.
It is strictly forbiden to change the default value of parameter 4. The parameters 4 and 5 control the anti-legionella cycle
(temperature vs time). We recommend to respect the above guidelines, if you want to change them. Please remember that
to keep the temperature of the tank water between 55-60°C in order to inhibit the bacterial proliferation (see Annex 13 of
the guidelines mentioned above).
The parameter 21 acts on the frequency of disinfection cycles. It must be properly set according to the storage temperature
of the tank and the frequencies of DHW utilization. Higher frequency of the disinfection cycle, results in a lower possibilities
of bacteria contact.
The stagnant water allows Legionella bacteria to grow. For this reason it is necessary to properly valuate the frequency of
the disinfection cycle according to its own uses.
The plant designer must keep in mind the legionella risk and should adopt all the measures for prevention and control of
water.
The user is RESPONSIBLE to periodically check the correct operation of the anti-legionella cycle and to verify that during the
disinfection, the setting temperature parameter is put to be 4 and is reached for the duration indicated by the parameter 5.
11.4.6 Auxiliary electric resistance
Electric resistance on or off, condition 1:
(when the unit is switched on, and the electrical resistance has not been switched on manually using the relevant button)
1. ON: when tank temperature set TS1 (parameter 0) is greater than the operating limit expressed
in Section 16, the lower temperature of tank T2 reaches this limit and the upper temperature of tank T3 ≤ TS1-3°C;
OFF: when the upper tank temperature T3 reaches temperature set TS1+1°C.
2. ON: when the ambient temperature ≤ -10°C or > 44°C;
OFF: when the ambient temperature ≥ -8°C or < 42°C.
3. ON: when high or low gas pressure protection is triggered three times in 30 minutes;
OFF: when the gas pressure protection has triggered for the third time, the corresponding error code is displayed, and this protection cannot
be reset until the unit is disconnected and restarted. The resistance continues to operate to reach the set temperature, then it is switched
off.
4. ON: when the unit enters defrost (only if parameter 20 is set to 1=on) or disinfection;
OFF: when the unit exits defrost or disinfection.
The resistor integration function described in point 1 of condition 1 can be deactivated via parameter 32 (see paragaph 11.5).
Electric resistance on or off, condition 2:
(when the unit is switched on and the electric resistance has been switched on manually using the relevant button)
1. ON: the running time of the compressor exceeds the delay time of the heater (parameter 3), and the upper tank temperature T3 ≤ TS2-3°C;
OFF: upper tank temperature T3 ≥ TS2+1°C.
Electric resistance on or off, condition 3:
(when the unit is switched off but powered, namely in standby mode)
1. ON: If the electric resistance has been switched on manually using the corresponding key, it will operate until the upper
tank temperature T3 reaches set TS2;
OFF: the electric resistance was switched off manually using the button or the upper temperature of tank T3 has reached set TS2.
2. ON: Upper tank temperature T3 ≤ 5°C (tank frost protection);
OFF: upper tank temperature T3 ≥ 10°C or the unit is switched on.
When the heater is switched on manually using the heater key, TS2 (heater off temperature) appears on the display and can
be changed directly instead of TS1 (tank temperature set).