Installation of accessories
21
Compress 3000 AWES – 6720892204 (2020/06)
Fig. 21 Contact open, connection B open
In heating mode, the contact is opened and connection B is open.
Fig. 22 Molex plug
The 3-way diverter valve has a Molex plug in which only terminals 2, 3
and 6 are assigned.
Make the following connections on the installation module:
▶ N – Connection to terminal N, VW1 on the installation module
▶ N – Connection to terminal 53, VW1 on the installation module
▶ N – Connection to terminal 54, VW1 on the installation module
8.6 Several heating circuits (with heating circuit module)
In the delivery ex works, a heating circuit without mixer can be controlled
via the controller. If other circuits are to be installed, a heating circuit
module is required for each one.
▶ Install the heating circuit module, mixer, heating pump and other
components according to the selected system solution.
▶ Connect the heating circuit module on the installer module in the
control device of the indoor unit to terminal EMS.
▶ Perform the settings for several heating circuits according to the
instructions for the control unit.
8.7 DHW circulation pump PW2 (accessory)
The pump settings are made on the control unit of the indoor unit (
instructions of the control unit).
8.8 Installation with cooling
NOTICE:
Material damage due to moisture!
Only the indoor unit with integrated electric booster heater is sufficiently
insulated against condensation for cooling mode below the dew point.
A room temperature-dependent control unit (accessory) must be
installed for the cooling mode.
Installing room temperature-dependent control units with an integrated
humidity sensor (accessory) increases the safety of cooling mode since
the flow temperature in this case is automatically controlled by the
control unit corresponding to the current dew point.
▶ Insulate all connections and pipes from condensation.
▶ Install the room temperature-dependent controller with integrated
humidity sensor ( instructions for the respective room
temperature-dependent controller).
▶ Install the condensation point sensors ( Chapter 8.9).
▶ Select automatic mode for heating/cooling ( instructions for
control unit).
8.9 Installing the condensation point sensors (accessory
for cooling mode)
NOTICE:
Material damage due to moisture!
If the system is operated below the dew point in cooling mode, this
causes moisture to precipitate on adjacent materials (floor).
▶ Do not operate underfloor heating systems in cooling mode below
the dew point.
▶ Set the correct flow temperature.
The condensate monitoring function stops the cooling mode when
condensate formation is detected on the pipes of the heating system.
Condensate forms in cooling mode when the temperature of the heating
system is below the corresponding dew point temperature.
The dew point will vary depending on temperature and humidity. The
higher the humidity, the higher the flow temperature must be to remain
above dew point and avoid condensation.
The humidity sensors send a signal to the control once they detect
condensate formation. This stops cooling mode.
Installation and handling instructions are supplied with the dew point
sensors.
8.10 Installation with swimming pool
NOTICE:
Danger of faults!
If the swimming pool mixer is installed in the wrong location in the
system, faults may occur. The swimming pool mixer must not be installed
in the flow where it could block the pressure relief valve.
▶ Assemble the swimming pool mixer in the return to the indoor unit (as
shown in the example image for swimming pool installation).
▶ Mount the tee connection piece in the flow from the indoor unit
upstream of the bypass.
▶ Do not install the swimming pool mixer as heating circuit in the
system.
A prerequisite for using the swimming pool heating is the installation of a
swimming pool module (accessory).
▶ Installing the swimming pool mixer.
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