Delta HE 35 Series Installation And Operating Instructions Manual page 49

Delta HE neutral_d_f_nl_gb_13-10-14_A6:A5 12.11.2014 14:51 Seite 49
Night setback
Press the
comes on, the night setback is activated and the pump
automatically switches from normal operation to night set-back.
The change between the two modes depends on the advance
flow temperature. The pump automatically changes to night
setback if the advance flow temperature falls by more than 10°C
to 15°C within one hour. The display indicates "-C". As soon as
the advance flow temperature increases by 3°C the
system changes back to normal operation.
Permanent night setback
For setting the night setback as permanent mode, press the
key again for 5 seconds. The display indicates "-C". The
pump remains in night setback mode until the push-button is
pressed again.
The pump will remain in the setback mode until
• the next key is pressed
• an increase of the flow temperature.
After that it will activate the automatic night setback. The same
occurs after a power failure.
key to activate the night setback. If the display
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