INSTALLATION | Appliance maintenance
BIA-EUROPA Mini IWPL-EN11 | www.ochsner.com 17
13. Appliance maintenance
WARNING: Electrocution
For maintenance, disconnect power to your heat
pump.
13.1 Service interval
We recommend arranging for an inspection and if neces-
sary a service to be conducted on the heat pump once a
year.
We also recommend cleaning the evaporator. Air ducts
and any screens and filters should also be checked for
cleanliness.
OCHSNER Customer Service will be pleased to help in
carrying out maintenance and testing.
13.2 Removing the cowl
Material damage
The cowl must be removed only by authorised con-
tractors.
WARNING: Electrocution
When the cowl is removed, live parts can be ac-
cessed.
»
To carry out maintenance, disconnect the
power to your heat pump.
If the distance between cowl and ceiling is too small, the
cowl cannot be fully lifted off the heat pump.
To do this, the
cowl must be removed:
»
Remove the cowl fastening screws.
»
Raise the cowl by approx. 10 cm.
»
Turn the cowl cover anti-clockwise.
»
Raise and remove the cowl cover.
»
Divide the cowl outer casing by moving the individual
casing parts vertically to each other.
»
Remove the components of the cowl outer casing
from the heat pump.
13.3 Descaling the DHW tank
Material damage
Only use descaling agents that are approved for
use in DHW tanks.
Depending on the DHW temperature and water hardness,
the following water treatments must be carried out in ac-
cordance with DIN 1988-7:2004-12:
dH [°]
δ<60°C
δ>60°C
0-14
None
A
14-21
A
Softening
> 21
Softening
B
δ
DHW temperature in °C
A
Periodic descaling required
B Use not recommended (reduction of DHW temperature)
In the case of highly fluctuating water quality and high water
temperatures (δ > 60°C), an annual inspection by OCHS
-
NER customer service is recommended.
Take the following steps into account when descaling the
system:
»
Reduce the pressure of the DHW tank.
