Activating the hot water production in the INFORMATION menu:
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INFORMATION
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Press minus - to get to the HOT WATER entry.
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Press right arrow (>) to select hot water.
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Press right arrow (>) to activate hot water sub menu.
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Press plus + to activate the hot water production.
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ON will appear to confirm the setting.
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Press left arrow (<) several times to exit the Information Menu.
When the operation is set to HOT WATER mode, the reversing valve hot water is set towards the heating sys-
tem. To minimize the risk that the outdoor unit freezes at low outdoor temperatures (that is, below 5°C) the
reversing valve hot water is set towards the water heater and the circulation pump starts to ensure a sufficient
flow. When the outdoor temperature is above 5°C, the circulation pump stops and the reversing valve hot
water is set towards the house (the heating system) again.
5.5 Activate the electrical auxiliary heater in Atec Plus and Atec Total
If the heat demand is greater than the heat pump’s compressor capacity, the immersion heater engages automatically in operating
mode AUTO. Atec Plus and Atec Total has three outputs, IMM. HEAT 1, IMM. HEAT 2 and IMM. HEAT 3 and output can be controlled in
five steps.
The two power steps, step 4 and step 5 for Atec Plus and Atec Total cannot be activated when the compressor is running. Immersion
heater step: +4 and +5 can be selected when the compressor is running and must only be selected on the condition that the building
where the heat pump is installed has a large heating demand and the building’s electrical installation is suitable for high current con-
sumption. In the event of an alarm, the immersion heater engages automatically on the condition that operating mode AUTO is selected
and that at least one additional step is permitted.
In Atec Plus and Atec Total a multi power stage heater (IMM HEATER) is factory installed. The heat pump control system engages the
appropriate amount of heating power to ensure the desired heating system temperature. Below is a table describing the different power
steps.
In power steps 1 – 3, +4 and +5, the compressor and the electrical auxiliary heater can be engaged at the same time. In power steps 4
and 5 only the electrical auxiliary heater is engaged.
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