iNSTallaTiON
Commissioning
20
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10.3 High limit safety cut-out for area heating
system
!
Material losses
In order to prevent excessively high flow temperatures
in the area heating system causing damage in the event
of a fault, install a high limit safety cut-out to limit the
system temperature.
10.4 Sensor installation
f
When installing a sensor, follow the commissioning instruc-
tions for the heat pump manager (see chapter “Connecting
external components”).
11. Commissioning
Only a qualified contractor may adjust the settings in the commis-
sioning instructions for the heat pump manager, commission the
appliance and instruct the operator in its use.
Carry out commissioning in accordance with these operating and
installation instructions, and the instructions for the heat pump
manager. Our customer support can assist with commissioning,
which is a chargeable service.
If this appliance is intended for commercial use, observe the rules
of the relevant Health & Safety at Work Act during commissioning.
For further details, check with your local authorising body (e.g.
TÜV).
11.1 Checks before commissioning
f
Before commissioning check the points detailed below.
11.1.1 Heating system
- Have you filled the heating system to the correct pressure?
- Have you closed the automatic air vent valve of the multi-
function assembly (MFG) after venting?
Material losses
f
Observe the maximum system temperature in un-
derfloor heating systems.
11.1.2 Heat source
!
Material losses
If screed drying is carried out with a ground source heat
pump, the heat source can be overloaded, especially a
geothermal probe. The ground around the geothermal
probe may freeze in the process. Heat transfer to the
ground will be irreparably damaged.
f
Observe the chapter "Menu structure / PROGRAMS
menu / HEAT-UP PROGRAM" in the commissioning
instructions for the heat pump manager.
The appliance is equipped with a source protection function. If the
temperature falls below a defined brine temperature, the appli-
ance automatically reduces the power.
11.1.3 Temperature sensors
- Have you correctly positioned and connected the outside sen-
sor and the immersion/contact sensor (in conjunction with a
buffer cylinder)?
11.1.4 High limit safety cut-out
At ambient temperatures below -15 °C, the high limit safety cut-out
of the multifunction assembly may respond.
f
Check whether the high limit safety cut-out has tripped.
D
00000
37
50
4
f
Reset the high limit safety cut-out by pressing the reset but-
ton.
11.1.5 Power supply
- Have you correctly connected the power supply?
11.2 Initial start-up
11.2.1 Activating spread control
Note
f
For cooling, use the constant flow rate (default set-
ting).
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
For spread control we recommend the following settings.
Parameter
Setting
[K]
SPREAD (COMMISSIONING / CHARGING PUMP CON-
TROL / HEATING / SET POINTS)
8
SPREAD (COMMISSIONING / CHARGING PUMP CON-
TROL / DHW / SET POINTS)
8
11.2.2 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:
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