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heater switch-off temperature = [value of parameter 0]-3 °C, the Electric
immersion heater
will be activated after the compressor will have
exceeded the delay time (value of parameter 3 x 5 minutes).
The Electric immersion heater switches off when the upper temperature
(OUT) of water T3 reaches [value of parameter 0] + 1 °C or when the
[Electric immersion heater ] key
This function is useful when the heat pump setpoint temperature is to
be reached quickly and by reducing the heating time duration or, for
Bollyterm
HP 1/2, when the user wants to heat all the water in the tank
®
(not only the upper part heated by the condenser of the heat pump).
Caution: The Electric immersion heater is activated after
a delay time that can be set by the user and is equal to
[value of parameter 3] x 5 minutes.
Note: If the setpoint temperature of the Electric immersion
heater (set value of parameter 2) is < 60°C and the water setpoint
temperature (set value of parameter 0) is > 60°C, the Electric
immersion heater switches off when the tank temperature reaches
[set value of parameter 2], then switches on again at 60°C until
reaching [value of parameter 0]. For this reason, is recommended
to set [parameter value 2] ≥ [parameter value 0] or, if the [parameter
value 0]> 60°C, set [parameter value 2] ≥ 60°C.
If the Electric immersion heater has not been activated by pressing the
[Electric immersion heater ] key
immersion heater cannot work as an integration in the following cases:
OVERHEATING: if the water setpoint temperature (set value of parameter
0]) is > 60° C, the heat pump heats the water up to 60° C. When the tank
water temperature detected by the probe (T2) is > 60° C, the compressor
stops, due to the protection function, and the Electric immersion heater
is activated. When the temperature detected by the probe (T2) reaches
[value of parameter 0] + 1°C, the Electric immersion heater switches off.
If the temperature (T2) goes below 60° C, the Electric immersion heater
switches off and the Heat Pump switches on again and heats the water
up to 60° C.
DEFROSTING/ANTIBACTERIAL CYCLE: When the appliance is
in defrosting mode or in disinfection mode, the electric heater is on.
The electric heater switches off when the unit exists the defrosting or
disinfection mode.
10.2.3 Electric immersion heater only operation
The Electric immersion heater can operate alone to heat water in the
following cases:
MANUAL ACTIVATION: during STAND-BY mode, press the [Electric
immersion heater ] key
to activate Electric immersion heater ONLY
mode.
The Electric immersion heater is activated to heat water up to [value of
parameter 2], while the Heat Pump remains off; the operating mode of
the unit will be as follows:
If the tank water temperature detected by T3 probe is ≤ [value of
parameter 2]-3°C, the Electric immersion heater is activated. The Electric
immersion heater switches off when the water temperature detected by
T3 probe reaches [value of parameter 2] + 1°C or when the [Electric
immersion heater ] key
is pressed (manual switch-off).
This function is useful if a temperature (value of parameter 2) different from
the heat pump setpoint (value of parameter 0) is to be reached quickly.
If the Electric immersion heater has not been manually activated by
pressing the [Electric immersion heater ] key
is pressed (manual switch-off).
on the control panel. The Electric
on the control panel, it
can be operated in the following cases:
TEMPERATURE PROTECTION: If T1 probe detects an ambient
temperature T1≤ -5 ° C or T1> 44°C, the compressor of the Heat Pump
stops, due to the protection function, the Electric immersion heater is
activated and the domestic hot water production is carried out only by
means of the Electric immersion heater , which switches on after a delay
time equal to [value of parameter 3] x 5 minutes. When the ambient
temperature is again between the following values: -3°C ≤ T1 ≤ 42°C,
the Electric immersion heater switches off and the Heat Pump switches
on again.
PRESSURE PROTECTION: if a protection function for high or low
pressure is triggered 3 times in 30 min, the compressor of the Heat Pump
stops and the Electric immersion heater switches on. In this case, the
error code will be displayed. This protection cannot be reset without first
removing the power supply. The Electric immersion heater operation will
continue until the set temperature is reached, then it will switch off.
ANTI-FREEZE PROTECTION: If the tank water temperature detected
by T2 probe in STAND-BY mode is ≤ 5 °C, the Electric immersion heater
is activated to protect the tank against freezing. The Electric immersion
heater switches off when the water temperature is again T2 ≥ 10° C or
when the unit is switched on by pressing the [ON/OFF] key.
10.2.4 Defrosting mode
The defrosting mode allows using the unit even with air temperatures
close to 0° C, preventing ice from forming on the surface of the evaporating
coil. This function activates the electric immersion heater automatically,
the system enters or exits the defrosting mode according to the internal
control program. . The unit does not support defrosting manual control.
The defrosting parameters that can be set are as follows:
• Parameter 6 Defrosting time 30~90 min (45 min by default)
• Parameter 7 Heat exchanger temperature for defrosting activation
-30 ~ 0°C (-7°C by default)
• Parameter 8 Heat exchanger temperature for defrosting deactivation
2 ~ 30°C (13°C by default)
10.2.5
Cyclical antibacterial treatment function
The antibacterial cycle is used to cyclically increase the
boiler water temperature to, and keep it at, a temperature
value defined as thermal shock (65-70°C) ([value of
parameter 4] 50÷70 °C) through the Electric immersion
heater . The cycle starts automatically every week (not
editable) at the set time of the selected day (value of
parameter 13). The cycle will be performed on the day of the week in
which the unit has been connected to the power supply (in case of
black-out, the cycle period is reset and restarted from the moment
in which the power was restored).
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Cod. 1910000001165 - nv01-t
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