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1. Check that operating mode A is set.
2. Confirm connected external sensors. If T3 (GT3), T4 (GT4) or T5
(GT5) have been connected, you must confirm these so the control
unit knows they are installed. The displays presented by the sensors
are only shown if the sensors have been confirmed.
3. Set the maximal output to be used by the electric cassette. Choose
between 1/3, 2/3 and 3/3. It is important that the electrical installation
is adapted to handle the maximum electrical output. On delivery the
control unit is set at 2/3.
Menu displays you might need to adjust or check
1. Set the hysteresis for heat pump on/off switching on the return sensor
T1 (GT1). A lower value gives a shorter interval between start and
stop. Less than 5ºC should be avoided.
2. Set the neutral zone for the mixing valve on the second heat curve. In
the neutral zone the mixing valve receives no signal to open or close.
Applies to sensor T4 (GT4) only.
3. Set the maximum temperature in the mixing valve circuit. You can, for
example, set a maximum temperature for the floor heating system. On
delivery the value is set to 60ºC. Applies to sensor T4 (GT4) only.
4. Set the temperature in the hot water heater's outer shell. Note that the
setting does not apply to the temperature inside the hot water heater.
Set too high and the heat pump can shut down on a high return or high
pressure switch. Applies to sensor T3 (GT3) only. A higher setting than
45ºC can cause problems.
5. Set the hysteresis for the hot water temperature. The function
measures below and above the value set in menu 2.3. Applies to sensor
T3 (GT3) only. Less than 5ºC should be avoided.
6. Set when the additional heat should be activated. On delivery the heat
pump is set to activate the additional heat when necessary. Choose
between Yes or No. If you choose No, the additional heat only engages
during alarms, extra hot water and hot water peaks.
7. Read how much of the additional heat (per cent) has been utilized.
59
Commissioning the heat pump
Commiss./Service
Select operating
mode A B
5.1
Return
Select
Commiss./Service
Connected extra
sensor in op
5.13
Return
Select
Commiss./Service
Select conn capacity
electr. cass.
5.2
Return
Select
Temperature settings
Heat curve
hysteresis
1.4
Return
Select
Temperature settings
Mixing valve curve
neutral zone
1.8
Return
Select
Temperature settings
Mixing valve curve
max at GT4
1.9
Return
Select
Hot water settings
Setting of hot water
temperature
2.3
Return
Select
Hot water settings
Setting of
DHW hysteresis
2.4
Return
Select
Commiss./Service
Select function
add.heat yes/no
5.5
Return
Select
Additional heat
Show connected elec.
capac. in op.
8.5
Return
Select
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