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2. Function
2.1 Function description Optima 180
The flow diagram shows the location of the sensors, while
the circuit board shows the relay outputs and the other
outputs for connecting fan and control panel.
Vanvex Lite sanitary hot water heat pump:
Vanvex Lite is an independent sanitary hot water heat
pump to be installed in rooms that are not part of the
living space, e.g. basement rooms.
The only requirement to the room is that the air
temperature stays between 8°C and 35°C.
We recommend basement rooms because even during
the winter heat is supplied from the surrounding soil layer.
Heat pump operation
The control starts the compressor shortly after hot water
has been tapped. The compressor will run until the entire
tank has been heated to the set temperature again.
Usually the heat pump can produce a sufficient amount of
hot tap water covering the needs of a common family.
Water heating:
When hot water is drawn off, the tank will be refilled
with cold water at the bottom. A sensor measures the
temperature at the bottom of the tank and starts the
compressor if the temperature has fallen 5°C below
the set temperature. The compressor stops, when the
water has been heated to the set temperature. While
the compressor operates, the fan runs and circulates air
through the cooling coil.
Fan operation:
The operating valve can be adjusted between 0-100%.
2.2 Extra Capacity
If a situation should occur where the heat pump is not
capable of producing enough hot tap water (more people
in the house), an extra electrical cartridge in the container
can be switched on. Doing so, it is possible to heat up
more water. It is possible to set the desired temperature
to which the electrical cartridge should heat up the water.
(Only use the electrical cartridge when needed, as it
uses more energy than the compressor). The electrical
cartridge can be activated manually on the display.
2.3 Operating safety
Highpressure switch:
To prevent the compressor from exceeding its range of
operation, there is an integral high pressure switch, which
interrupts when the pressure is 20 bar in the cooling
unit. Activate the red reset button once the cause of the
error has been identified. When the high pressure switch
interrupts, the red Genvex logo will flash until the reset
button manually or the pressure has fallen to 15 baror the
cause of error has been idenfied. When the high pressure
switch interrupts, the red light will flash until the reset
button on the pressure switch is activated. In order to
prevent a repetition of a pressure switch error, the water
may be set 2-3 °C lower.
Operation description:
By setting voltage to the system the display will count 5
seconds up after which the control will show the version
number. When this has been done the water temperature
will be shown in the water reservoir (standard indication).
If the water temperature is lower than the setpoint by
the operating thermostat, the compressor and the fan
will turn on. The fan wil start with 30% speed and adjust
the speed until 100% is reached. When the operatigng
temperature (P3) is reached the compressor and the fan
will stopp.
Ambient temperature:
If the ambient temperature is under 8°C the compressor
and the fan will stopp and first restart when the ambient
temperature is 9°C (however there will go op to 30 minuts
before the compressor will restart). When the ambient
temperature is under 8°C the electrical cartridge will
automatically turn on and turn on/off according to the
setpoint at the operatign thermostat (P5). The same
conditions have its effects when the ambient temperature
is over 35°C, hereby the compressor will restart again by
34°C with a delay on the compressor.
Safety breaker
If an error occurs at the electrical cartridge, the safety
breaker trips. Resetting the safety breaker may be done
by breaking the small button in the centre.
(
When working on the heat pump, always
make sure that the power supply is
disconnected.
Any work on this unit may only be carried
out by trained personnel!)
2.4 Warnings
Pressure switch error:
When the high pressure switch trips, the red Genvex logo
will flash until the red pressure switch is reset.
