17
Parameter 35, must be set to “0”
When ON/OFF contact is closed, and the controller is ON, the unit can work and the running mode is decided by the setting of the
controller.
When ON/OFF contact is closed, but the controller is OFF, the unit can’t work.
When ON/OFF contact is opened, but the controller is ON, the unit can’t work (with the exception of external pump).
If the controller is ON, and the ON/OFF status is changed from opened to closed, the unit will work by the previous settings of the
controller (auto-restart).
If the unit was previously in stand-by, in case the ON/OFF status is changed from opened to closed, the unit remains in stand-by.
A signal/warning in case of remote OFF signal (opened contact) is displayed. In such a way the customer can understand why the
unit is not working
Only qualified persons should design and install ON/OFF system!
w
hen the unit is turned on, and the E-heater button on the control panel hasn’t been turned on manually
1)
When lower tank temperatureT2 becomes equal to “TS1 calc”, compressor is turned OFF and if “TS1 calc” < TS1 manual
set value, e-heater will work according to the following logic:
ON: when upper tank temperature T3 ≤ TS1 manual value -3°C (Parameter 33, default 3°C), e-heater is turned ON;
OFF: when the upper tank water temperature T3 reaches the setting temperature TS1 manual value + 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 there is high pressure or low-pressure protection for 3 times in 30 min;
OFF: when the third time pressure protection occurs, the error code will be displayed, and this protection cannot be recovered
unless powering off the supply. So, the E-heater keeps running to reach the setting temperature, then it is switched off.
4)
ON: when in defrosting (only if the parameter 20 is set to 1=on) or disinfection;
OFF: when exit defrosting or disinfection.
when the unit is turned on, and the E-heater button on the control panel has been turned on manually
1)
ON: Compressor runtime exceeds the E-heater delay time (parameter 3), and the upper tank water temperature T3 ≤ TS1
manual - 3°C;
OFF: upper tank water temperature T3 ≥ TS1 1°C.
when the unit is turned off
1)
ON: if the E-heater button on the control panel has been turned on manually when the unit is at OFF status, the E-heater
will work until the tank water T3 reaches the setting temperature TS2;
OFF: The E-heater button on the control panel has been turned off manually or the tank water T3 reaches the setting temperature
TS2.
2)
ON: lower tank water temperature T2 ≤ 5°C (tank water frozen protection);
OFF: lower tank water temperature T2 ≥ 10°C or the unit is turned on.
WARNING! Any equipment repair must be performed by qualified personnel. Improper repairs can put the
user in serious danger. If your equipment needs to be repaired, please contact the technical assistance
service.
WARNING! Before attempting any maintenance operation, make sure that the equipment is not and can-
not be accidentally connected to the power supply. Therefore, disconnect the equipment from the mains
power supply before carrying out any maintenance or cleaning activities.
27 (Fig.14)
The device is equipped with a safety thermostat. When manually reset, the equipment is tripped in case of over-heating.
In order to reset the protection, it is necessary to:
•
Disconnect the device from the mains power supply;
•
Remove the plastic cover 50 by undoing the appropriate locking screws 53 (Fig. 14);
•
Manually reset the safety thermostat 27 (Fig. 14).
•
Reassemble the upper cover that was previously removed
WARNING! The tripping of the safety thermostat can be caused by a fault linked to the control board or
by the absence of water inside the tank.
WARNING! Carrying out repair operations on parts that perform safety functions jeopardises the safe
operation of the equipment. Substitute the faulty elements only with original spare parts.
8.4.
ON/OFF contact
8.5.
Electrical heater
8.5.1. E-heater turned ON or OFF condition 1:
8.5.2. E-heater turned ON or OFF condition 2:
8.5.3. E-heater turned ON or OFF condition 3:
9. MAINTENANCE AND CLEANING.
9.1.
Resetting of safety thermostat
Содержание HPWH 3.1 200 U02
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