iNSTALLATiON
Settings
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23
Delivery head test
Δp
UP
* ≥ (V
min
/ V
HKo
)
2
× (Δp
HK
+ Δp
V
) + Δp
WP
Δp
UP
External delivery head of the circulation pump at V
min
*
If the circulation pump is integrated in an indoor unit, the
available external head can be found in the specification
for the indoor unit.
V
min
Minimum flow rate of heat pump
V
HKo
Design flow rate of the permanently open heating circuits
Δp
HK
Design pressure drop of the permanently open heating
circuits
Δp
V
Design pressure drop to and from floor distributors
Δp
WP
Pressure drop in the heat pump at V
min
For heat pumps with an integral circulation pump, the pressure
drop of the heat pump (Δp
WP
) is not taken into account.
If the external delivery head is not sufficient for the minimum flow
rate, additional heating circuits for the underfloor heating must
be permanently opened.
13. Settings
13.1 Activating spread control
f
To adapt the appliance to your requirements, activate spread
control.
Parameter
Setting
SPREAD CONTROL (COMMISSIONING / CHARGING PUMP
CONTROL / HEATING / TYPE OF CONTROL)
ON
SPREAD CONTROL (COMMISSIONING / CHARGING PUMP
CONTROL / DHW / TYPE OF CONTROL)
ON
PWM pump without internal module
f
Connect the pump.
mains power supply
X2.6
Buffer charging pump 1
X2.8
DHW charging pump
f
Adjust the parameters.
Parameter
PWM 100%...0% (I/O CONFIGURATION / OUTPUT X 1.16)
PWM 100%...0% (I/O CONFIGURATION / OUTPUT X 1.17)
CHARGING PUMP CONTROL HEATING (I/O CONFIGURATION / OUTPUT X
1.16 / OUTPUT)
CHARGING PUMP CONTROL DHW (I/O CONFIGURATION / OUTPUT X 1.17 /
OUTPUT)
13.2 Heating curve adjustment
The efficiency of a heat pump decreases as the flow temperature
rises. Adjust the heating curve carefully. Heating curves that are
set too high cause the zone valves or thermostatic valves to close,
which may result in the minimum required flow rate in the heating
circuit being undershot.
f
Observe the WPM commissioning instructions.
The following steps will help you to adjust the heating curve cor-
rectly:
- Fully open thermostatic or zone valves in a lead room (e.g.
living room and bathroom).
We do not recommend installing thermostatic or zone valves
in the lead room. Control the temperature for these rooms
via a remote control.
- At different outside temperatures (e.g. -10 °C and +10 °C),
adjust the heating curve so that the required temperature is
set in the lead room.
Standard values to begin with:
Parameter
Underfloor heating radiator heating
system
Heating curve
0.4
0.8
Controller dynamics
25
50
Comfort temperature
21 °C
23 °C
If the room temperature is too low in spring and autumn (ap-
prox. 10 °C outside temperature), go to heat pump manager menu
SETTINGS / HEATING / HEATING CIRCUIT and raise the parameter
COMFORT TEMPERATURE”.
Note
If no remote control is installed, raising the "COMFORT
TEMPERATURE" parameter will lead to a parallel offset
of the heating curve.
If the room temperature is too low at low outside temperatures,
increase parameter "HEATING CURVE".
If the "HEATING CURVE" parameter has been raised and outside
temperatures relatively high, adjust the zone valve or thermostatic
valve in the lead room to the required temperature.
!
Material losses
Never reduce the temperature in the entire building by
closing all zone or thermostatic valves; instead use the
setback programs.
When everything has been implemented correctly, the system
can be heated to its maximum operating temperature and vented
once again.
!
Material losses
For underfloor heating systems, observe the maximum
permissible system temperature for that particular un-
derfloor heating.
13.3 Reduced night mode (Silent mode)
f
Look up the sound power level in the data table (see chapter
"Specification / Data table").
To reduce the sound power level of the appliance for a specified
period, you can set the appliance to night mode if required.
You can specify the times during which the appliance is set to night
mode using the time programs.
Parameter
meaning
PROGRAMS (SILENT PROGRAM 1)
reduced night mode
PROGRAMS (SILENT PROGRAM 2)
Appliance switched off
Two versions of night mode are available for you to use.
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