Viessmann BWT 241.A Series, Installation And Service Instructions Manual

Page: 54 / 124

54
Checking the refrigerant circuit for leaks
Danger
The refrigerant is a non-poison-
ous gas that displaces air.
Unregulated escape of refriger-
ant in enclosed spaces can result
in difficulties in breathing and suf-
focation.
■ Ensure adequate ventilation in
enclosed rooms.
■ Observe and adhere to regula-
tions and guidelines about han-
dling refrigerant.
Danger
Direct contact with refrigerant
can harm skin.
Wear safety goggles and protec-
tive gloves when working on the
refrigerant circuit.
Note
Work on the refrigerant circuit must
only be carried out by qualified person-
nel (in accordance with Ordinances EC
842/2006 and 303/2008).
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.
If there are any leaks, have the compact
heat pump checked by a refrigeration
engineer.
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.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5601 598 GB