65
1.
Check the Victaulic connections in
the heat pump for tightness. The Vic-
taulic couplings must be tight and fit-
ted together so that there are no
gaps.
2.
Open any on-site non-return valves if
installed.
3.
Check the pre-charge pressure of the
expansion vessel.
4.
Fill (flush) and vent the secondary cir-
cuit.
!
Please note
To prevent appliance dam-
age, check the flow and return
connections of the heat pump
secondary circuit for tight-
ness.
In the case of leaks, switch off
the heat pump
immediately
,
drain the secondary circuit
and check the seating of
seals/gaskets. Replace dis-
placed gaskets.
5.
Check the system pressure and top
up with water if required.
Minimum system pressure: 0.8 bar
Permiss. operating pressure: 2.5 bar
Checking expansion vessels and the primary circuit/secondary
circuit pressure
Observe engineering informa-
tion.
Heat pump technical guide
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5848 246 GB
Service
