EKHBH/X008BB
Indoor unit for air to water heat pump system
4PW62570-1A – 01.2011
Installation manual
26
8
Fixation
Check that the unit is properly fixed, to avoid abnormal noises
and vibrations when starting up the unit.
9
Damaged equipment
Check the inside of the unit on damaged components or
squeezed pipes.
10
Refrigerant leak
Check the inside of the unit on refrigerant leakage. If there is a
refrigerant leak, call your local dealer.
11
Power supply voltage
Check the power supply voltage on the local supply panel. The
voltage must correspond to the voltage on the identification label
of the unit.
12
Pipe size and pipe insulation
Be sure that correct pipe sizes are installed and that the
insulation work is properly executed.
13
Stop valves
Make sure that the stop valves on the outdoor unit (gas and
liquid) are fully open.
14
Air purge valve
Make sure the air purge valve is open (at least 2 turns).
15
Pressure relief valve
Check if the backup heater is completely filled with water by
operating the pressure relief valve. It should purge water instead
of air.
16
Water leak
Check the inside of the unit on water leakage. in case there is a
water leakage close the water inlet and water outlet shut-off
valves and call your local dealer.
17
Shut-off valves
Make sure that the shut-off valves are correctly installed and
fully open.
8.7.
Powering up the indoor unit
When power supply to the indoor unit is turned on, "
88
" is displayed
on the user interface during its initialisation, which might take up to
30 seconds. During this process the user interface cannot be
operated.
8.8.
Setting the pump speed
The pump speed can be selected on the pump (see
The default setting is high speed (
III
). If the water
flow in the system is too high (e.g., noise of running
water in the installation) the speed can be set to
medium speed (
II
) or low speed (
I
).
The available external static pressure (ESP,
expressed in kPa) in function of the water flow (l/
min) is shown in the graph below.
8.9.
Field settings
The indoor unit shall be configured by the installer to match the
installation environment (outdoor climate, installed options, etc.) and
user demand. Thereto, a number of so called field settings are
available. These field settings are accessible and programmable
through the user interface on the indoor unit.
Each field setting is assigned a 3-digit number or code, for example
[1-03], which is indicated on the user interface display. The first digit
[1] indicates the 'first code' or field setting group. The second and
third digit [03] together indicate the 'second code'.
A list of all field settings and default values is given under
. In this same list, we provided for 2
columns to register the date and value of altered field settings at
variance with the default value.
A detailed description of each field setting is given under
Procedure
To change one or more field settings, proceed as follows.
NOTICE
Operating the system with the backup heater not
completely filled with water will damage the backup
heater!
NOTICE
Operating the system with closed valves will damage
the pump!
III
II
I
0
10
20
30
40
50
60
70
II
12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42
ESP
[kP
a
]
[l/min]
I
III
2
3
1
