71
Checking the refrigerant circuit for leaks
1.
Check the floor area, valves and all
visible solder joints for traces of oil.
Note
Traces of oil indicate a leaking refrig-
erant circuit. Have your heat pump
checked over by a refrigeration engi-
neer.
2.
Check the heat pump interior with a
refrigerant leak detector or leak
detecting spray for refrigerant leaks.
Charging and venting on the primary side
!
Please note
To prevent appliance damage,
charge the primary circuit before
connecting the power supply.
1.
Check Victaulic connection inside the
heat pump for tightness. The cou-
pling must sit flush inside the
grooves. Tighten the two semi-shells
so that no air gap remains.
2.
Check the pre-charge pressure of the
expansion vessel.
3.
Charge the primary circuit with
Viessmann heat transfer medium
and vent.
Note
The system must be protected
against frost down to –15 °C.
!
Please note
To prevent equipment dam-
age, check the flow and return
connections of the heat pump
heating circuit for tightness.
In the case of leaks, switch off
the heat pump
immediately
,
drain the water and check the
seating of the seal rings.
Replace any seal rings that
may have become dislodged.
Filling and venting on the secondary side
!
Please note
To prevent appliance damage,
fill the heating circuit before
switching on the power supply.
Note
Before filling the system, observe
VDI 2035 part 1.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5848 449 GB
Service
