EKHBH/XE008AA3V3
Indoor unit for air to water heat pump system
4PW48441-1B
Installation manual
23
T
EST
RUN
AND
FINAL
CHECK
The installer is obliged to verify correct operation of the indoor and
outdoor unit after installation.
Automatic test run
When the unit is put into operation (by pressing the
y
button) for
the first time, the system will automatically perform a test run in
cooling mode. The test run will take up to 3 minutes, during which no
specific indication is given on the user interface.
During the automatic test run, it is important to ensure that the water
temperature does not drop below 10°C, which might activate the
freeze-up protection and thereby prevent the test run to finish.
Should the water temperature drop below 10°C, press the
h
/
c
button so the
h
icon is displayed. This will activate the backup heater
during the automatic test run and raise the water temperature
sufficiently.
If the automatic test run has ended successfully, the system will
automatically resume normal operation.
If there are misconnections or malfunctions, an error code will be
displayed on the user interface. To resolve the error codes, see
Test run operation (manual)
If required, the installer can perform a manual test run operation at
any time to check correct operation of cooling, heating and domestic
water heating.
Procedure
1
Push the
z
button 4 times so the
t
icon will be displayed.
2
Depending on the indoor unit model, heating operation, cooling
operation or both must be tested as follows (when no action is
performed, the user interface will return to normal mode after 10
seconds or by pressing the
z
button once):
•
To test the heating operation push the
h
/
c
button so the
h
icon is displayed. To start the test run operation press the
y
button.
•
To test the cooling operation push the
h
/
c
button so the
c
icon is displayed. To start the test run operation press the
y
button.
•
To test the domestic water heating operation push the
v
button. The test run operation will start without pressing the
y
button.
3
The test run operation will end automatically after 30 minutes or
when reaching the set temperature. The test run operation can
be stopped manually by pressing the
z
button once. If there are
misconnections or malfunctions, an error code will be displayed
on the user interface. Otherwise, the user interface will return to
normal operation.
4
To resolve the error codes, see
Final check
Before switching on the unit, read following recommendations:
■
When the complete installation and all necessary settings have
been carried out, close all front panels of the unit and refit the
indoor unit cover.
■
The service panel of the switch box may only be opened by a
licensed electrician for maintenance purposes.
M
AINTENANCE
In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried out
at regular intervals.
The described checks must be executed at least once a year.
1
Water pressure
Check if the water pressure is above 0.3 bar. If necessary add
water.
2
Water filter
Clean the water filter.
3
Water pressure relief valve
Check for correct operation of the pressure relief valve by
turning the red knob on the valve counter-clockwise:
■
If you do not hear a clacking sound, contact your local dealer.
■
In case the water keeps running out of the unit, close both
the water inlet and outlet shut-off valves first and then contact
your local dealer.
4
Pressure relief valve hose
Check that the pressure relief valve hose is positioned
appropriately to drain the water.
If the (optional) drain pan kit is installed, make sure that the
pressure relief valve hose end is positioned in the drain pan.
5
Backup heater vessel insulation cover
Check that the backup heater insulation cover is fastened tightly
around the backup heater vessel.
6
Domestic hot water tank pressure relief valve (field supply)
Applies only to installations with a domestic hot water tank.
Check for correct operation of the pressure relief valve on the
domestic hot water tank.
7
Domestic hot water tank booster heater
Applies only to installations with a domestic hot water tank.
It is advisable to remove lime buildup on the booster heater to
extend its life span, especially in regions with hard water. To do
so, drain the domestic hot water tank, remove the booster heater
from the domestic hot water tank and immerse in a bucket (or
similar) with lime-removing product for 24 hours.
8
Indoor unit switch box
■
Carry out a thorough visual inspection of the switch box and
look for obvious defects such as loose connections or
defective wiring.
■
Check for correct operation of contactors K1M, K3M and
K5M by use of an ohmmeter. All contacts of these contactors
must be in open position.
NOTE
When the outdoor unit is put into pump down operation
(see the outdoor unit installation manual), the
automatic test run flag will be cleared. The next time
the system is put into operation, the automatic test run
will be executed again.
NOTE
To display the last resolved error code, push the
z
button 1 time. Push the
z
button again 4 times to
return to normal mode.
NOTE
It is not possible to perform a test run if a forced
operation from the outdoor unit is in progress. Should
forced operation be started during a test run, the test
run will be aborted.
■
Before carrying out any maintenance or repair activity,
always switch off the circuit breaker on the supply
panel, remove the fuses or open the protection
devices of the unit.
■
Make sure that before starting any maintenance or
repair activity, also the power supply to the outdoor
unit is switched off.
Содержание EKHBHE008AA3V3
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