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5. Checking and maintenance
2
1
K
M
SERVICE
E
D
"
"
.
"
A
B
21
2
1
M001495-A
!
C
D
3. Vent the underfloor heating circuits and the radiators. First vent
the lower floors A and then the upper floors Z .
5.4.2.
Automatic venting
The heat pump runs an automatic venting cycle when it is powered
up. Automatic venting takes approximately one minute.
Automatic venting starts up only if the measured DHW
temperature is lower than 25°C.
It is possible to extend automatic venting manually to run for more
than one minute:
1. The word SERVICE flashes when powering up. Press A and B
( d )-keys simultaneously.
An automatic venting cycle begins. The word SERVICE stops
flashing .
2. Press the A and B ( d ) keys simultaneously to stop the venting
cycle.
¼ Consult the installer for more detailed information.
WARNING
After venting, have the installation's pressure checked.
Top up with water if necessary.
AWHP-V220
26/10/2011 - 300026802-001-B
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