EKHBH/X016AB
Indoor unit for air to water heat pump system
4PW42457-1
Installation manual
16
Setting the pump speed
The pump speed can be selected on the pump (see
The default setting is high speed (I). 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 low speed (II).
The available external static pressure (ESP, expressed in mH
2
O) in
function of the water flow (l/min) is shown in the graph below.
Field settings
The indoor unit should 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
[5-03], which is indicated on the user interface display. The first digit
[5] 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.
1
Press the
z
button for a minimum of 5 seconds to enter FIELD
SET MODE.
The
$
icon (3) will be displayed. The current selected field
setting code is indicated
;
(2), with the set value displayed to
the right
-
(1).
2
Press the
bgi
button to select the appropriate field
setting first code.
3
Press the
bgj
button to select the appropriate field
setting second code.
4
Press the
pfi
button and
pfj
button to change
the set value of the select field setting.
5
Save the new value by pressing the
pr
button.
6
Repeat step 2 through 4 to change other field settings as
required.
7
When finished, press the
z
button to exit FIELD SET MODE.
Detailed description
[0] User permission level
If required, certain user interface buttons can be made unavailable for
the user.
Three permission levels are defined (see the table below). Switching
between level 1 and level 2/3 is done by simultaneously pressing
buttons
pfi
and
pfj
immediately followed by
simultaneously pressing buttons
s
and
ba
, and keeping all 4
buttons pressed for at least 5 seconds (in normal mode). Note that no
indication on the user interface is given. When level 2/3 is selected,
the actual permission level — either level 2 or level 3 — is
determined by the field setting [0-00].
[1] Weather dependent set point (heating operation only)
The weather dependent set point field settings define the parameters
for the weather dependent operation of the unit. When weather
dependent operation is active the water temperature is determined
automatically depending on the outdoor temperature: colder outdoor
temperatures will result in warmer water and vice versa. During
weather dependent operation, the user has the possibility to shift up
or down the target water temperature by a maximum of 5°C. See the
operation manual for more details on weather dependent operation.
■
[1-00] Low ambient temperature (Lo_A): low outdoor
temperature.
■
[1-01] High ambient temperature (Hi_A): high outdoor
temperature.
NOTE
The speed dial on the pump indicates 3 speed
settings. However, only 2 speed settings exist: low
speed and high speed. The indicated medium speed
setting on the speed dial is equal to low speed.
0
1
[l/min]
ESP [mH
2
O]
16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58
2
3
4
5
6
7
I
II
I
II
2
3
1
NOTE
Changes made to a specific field setting are only
stored when the
pr
button is pressed. Navigating to a
new field setting code or pressing the
z
button will
discard the change made.
NOTE
■
Before shipping, the set values have been set as
shown under
"Field settings table" on page 20
■
When exiting FIELD SET MODE, "
88
" may be
displayed on the user interface LCD while the unit
initialises itself.
Button
Permission level
1
2
3
Quiet mode button
s
operable
—
—
Weather dependent
set point button
ba
operable
—
—
Schedule timer
enable/disable button
pr
operable
operable
—
Programming button
<
operable
—
—
Time adjust buttons
pf
i
pf
j
operable
—
—
Inspection/test
operation button
z
operable
—
—
