Domestic Hot Water Heat Pump Service Manual
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The PV function is not active. If this function is activated, the heat pump
and the electric heater can start only if the input voltage in GC1 (0-10V) is
higher than D20/D21 (PV min Voltage HP/EL) for longer than D22 (PV min
time).
The PV function allows for water heating only with the heat pump until
temperature set point defined by the MODE of operation is reached.
The PV function allows for water heating to the maximum temperature
level, giving priority to the operation of the heat pump if the BOOST or
BACK UP mode is not active. The heat pump operates alone until the max
allowed temperature for the heat pump operation D33 (T HP Max) is
reached. The electric heater operates only from D33 to the maximum
allowable temperature D9 (Water T max).
The Solar function allows the water to be heated up by the solar collector,
activating a water pump controlled by the extra relay (GP1). The pump
starts when BT5 > BT3 + D24 (Solar DT min). The pump stops if the
temperature in the tank goes above D23 (Solar T max) or if BT5 is below
BT3.
The floor heating function activates an external circulation pump. If the
temperature at the bottom of the tank BT4 (T water b) is higher than the
setting menu D25 (Floor T start) the floor heating function is activated.
If the extra temperature BT5 (T Extra) is higher than the floor heating
temperature (B8 T floor) the circulation pump (Extra relay GP1) stops.
The desired floor heating temperature in °C with hysteresis of 1K.
The Cooling function can be activated. See installer menu D28 (Cooling
type).
The air temperature set point (°C) below which the heat pump stops,
when the unit is in the Cooling function.
10.1.5 General
The general section collects all the standard settings that have little or no effect on the heat
pump operation, except for the menu item Reset.
Activating the Reset function brings all the set points to the factory settings value. The set
points of the General menu are described in the Table below
The set points in the user menu are reset. The more advanced
settings can be reset only from the installer menu.
The information as number of hours of the compressor and fan cannot
be reset
The software version is displayed
The time can be adjusted here
The date can be adjusted here
The day can be adjusted here
More languages can be selected here
The brightness of the screen can be adjusted here