►
Emptying the hydraulic unit
-Remove the front panel of the hydraulic unit.
-
Open the drain plug,
-
Check that the hydraulic unit's bleeder valve opens
automatically,
-
Open the installation’s bleeder valve(s).
►
Distribution valve
If the installation is fitted with a hot water tank.
Ensure the distribution valve is fitted in the correct
direction.
Channel
AB
: Outlet to the hydraulic unit.
Channel
A
open: Return from DHW tank.
Channel
B
open: Return from the heating circuit.
Other maintenance
- 79 -
alfea Excellia HP A.I. / Installation / 1944 - FR
Содержание 526651
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Страница 39: ...fig 36 Cable passages Power cables Sensor cables 39 alfea Excellia HP A I Installation 1944 FR ...