29
■
Prevent water and moisture in the refrigerant circuit.
■
Always close off conduits and components immedi-
ately. Refrigerant R1234ze decomposes within a few
days in the presence of oxygen.
Cleaning the interior of the DHW cylinder
1.
Empty the DHW cylinder via the drain outlet (see
page 40).
2.
Disconnect the DHW cylinder from the pipework to
prevent cleaning agents and contaminants from
entering the pipework.
3.
Open the DHW heat pump (see page 26).
8x
11.
10.
12.
4.
5.
Fig. 22
0
5.
Remove loose deposits manually or use a high
pressure cleaner.
!
Please note
Pointed, sharp and hard objects can dam-
age the interior.
Only use plastic cleaning equipment for
manual cleaning.
0
6.
Use a chemical cleaning agent to remove hard
deposits that cannot be removed with a high pres-
sure cleaner.
Danger
Cleaning agent residues can lead to
poi-
soning
.
Observe the cleaning agent manufacturer's
instructions.
!
Please note
Cleaning agents containing hydrochloric
acid can cause material damage.
Never use cleaning agents containing
hydrochloric acid.
0
7. Fully
drain all cleaning agent.
0
8.
Flush the DHW cylinder
thoroughly
after clean-
ing.
Commissioning, inspection, maintenance
Checking the refrigerant circuit for tightness
(cont.)
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