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• The timer outputs for normal speed, extended run normal and external
stop are off.
• During the recently started 24 hours, a time channel is on.
The WTU checks the night-time temperature (inside and outside
temperature) for 3 minutes at the set starting time. If the above conditions
are fulfilled, the summer night ventilation function is started.
If the conditions are not met, the WTU goes back into the off position.
Stop conditions:
• The outside temperature is above the set maximum value (e.g. +18 °C) or below
the set minimum value (due to condensation risk, e.g. +10 °C).
• The room or return air temperature is below the set value (e.g. +18 °C).
• One of the timer outputs for normal speed, external stop or extended running
time normal is on.
If the outside temperature falls below a selected value, the valve will always close.
Activating the DX battery
The DX battery is activated by adjusting the following settings:
Step 1 Go to 'Configuration' > 'Heating' and select 'Electric' Step 2 Go
to 'Configuration' > 'Cooler' and select 'DX'
Step 3 Go to 'Configuration' > 'Other parameters' > Split settings
Changer:0% at HCOut= 0%;
100% at HCOut = 100%
Heating: 0% at HCOut= 54%
100% at HCOut=100%
Cooling:
0% at HCOut= 30%
100% at HCOut= 0%
Step 4 Go to 'Configuration' > 'Cooling recovery' and select 'Yes'; set 'Cooling
limit' = 2.0
Step 5 Go to 'Configuration' > 'In/Outputs' > 'Analogue Outputs > 'AO3' and select 'Y1
Heating/Y3 Cooling'.
Summary of Contents for WTU-1000-EC-E
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