107
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.
Filling and venting on the primary side
!
Please note
To prevent equipment damage,
fill the primary circuit before con-
necting the power supply.
1.
Check the pre-charge pressure of the
expansion vessel.
2.
Fill the primary circuit with
Viessmann heat transfer medium
and vent.
Note
The system must be protected
against frost down to –15 °C.
Viessmann heat transfer medium is a
ready-mixed ethylene glycol-based
medium, for down to –15 °C, contain-
ing inhibitors for corrosion protec-
tion.
3.
Check the connections for possible
leaks. Replace faulty or displaced
gaskets.
Filling and venting on the secondary side
!
Please note
To prevent equipment damage,
protect electrical components on
the shield from escaping liquids.
Note
Before filling the system, observe
VDI 2035 sheet 1.
1.
Open any on-site non-return valves
installed.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5600 161 GB
Service
Summary of Contents for BW 01.A06
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