DeDietrich AWHP 6 MR Installation And Service Manual page 83

AWHP MIT-IN iSystem
1
2
3
24/09/2012 - 300027606-001-01
6
5
4
A B
n Power cut off (EVU)
C
EVU
Circulator MIT
A
EVU power cut off timer program
Z
Compressor
E
Outside temperature
R
Temperature set point MIT
T
Temperature OFFSET EVU (0 to 20 K)
Y
Phase A ( ¼ See below)
A
Phase B ( ¼ See below)
B
Phase C ( ¼ See below)
C
EVU function
EVU
Phase A
Normal operation according to the DHW and ECO / COMFORT timer
programme.
Phase B
Start-up of the EVU timer programme. The set point temperature on
the inside module is increased by the value shown in the OFFSET
EVU parameter as long as the EVU timer programme is active and
the EVU signal is absent (the EVU contact is closed). Domestic hot
water production can only be handled if the tank has an electrical
resistor.
Phase C
Presence of the EVU signal (the EVU contact is open). The outside
module, the back-ups and the heating pumps on the inside module
are powered down. The secondary pumps continue to run as long as
the circuits concerned are required. No DHW production enabled.
5. Commissioning
A
M002702-A
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