50
2.
When work is complete, close the heat pump: See
page 45.
Commissioning the appliance
Operating instructions for "Vitotronic 200 heat
pump control unit"
Compiling reports
Enter all readings taken during commissioning (descri-
bed below) in the reports on page 73 onwards.
Checking the refrigerant circuit for leaks
Danger
The refrigerant is a non-poisonous gas that dis-
places air. Unregulated escape of refrigerant in
enclosed spaces can lead to breathing difficul-
ties and suffocation.
■
Ensure adequate ventilation in enclosed
spaces.
■
Always observe regulations and guidelines on
handling this type of refrigerant.
Danger
Direct contact with refrigerant can be harmful to
skin.
Wear safety goggles and protective gloves when
working on the refrigerant circuit.
!
Please note
Refrigerant can escape when working on the
refrigerant circuit.
Work on the refrigerant circuit must
only
be car-
ried out by a certified contractor (in accordance
with EC 842/2006 and 303/2008).
Check the floor area, valves and all visible solder joints
for traces of oil.
Note
Traces of oil indicate a leak in the refrigerant circuit.
Have your heat pump checked over by a refrigeration
engineer.
Filling and venting the primary side
!
Please note
Commissioning when the primary circuit is
empty causes appliance damage.
Charge and vent the primary circuit before con-
necting the power supply.
1.
Check the pre-charge pressure of the expansion
vessel.
2.
Charge the primary circuit with Viessmann heat
transfer medium and vent.
Note
Ensure frost protection down to
–
19 °C.
Viessmann heat transfer medium is a ready-mixed
ethylene glycol-based medium. It contains inhibi-
tors for corrosion protection. The heat transfer
medium can be used at temperatures down to
–
19 °C.
Commissioning, inspection, maintenance
Opening the heat pump
(cont.)
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