Installation of accessories
Compress 3000 AWES – 6720892204 (2020/06)
20
Maximum load at relay outputs: 2 A, cosϕ > 0.4. If the load is higher, it
will be necessary to use an intermediate relay.
WARNING:
Material damage from incorrect connection!
The electrical components may become damaged if connected to the
wrong voltage or current.
▶ Only make connections that are adapted for 5 V and 1 mA to the
external connections of the indoor unit.
▶ If coupling relays are required, only use relays with gold contacts.
8.3
Installation of the domestic hot water cylinder
If the domestic hot water cylinder is installed lower than the heat pump
(e.g. in the cellar), a natural circulation can occur that leads to heat loss
in the cylinder.
▶ Install a non-return valve in the circuit to prevent natural circulation if
the installation height of the domestic hot water cylinder is below the
heat pump.
Fig. 17 Hot water cylinder
[1]
Non-return component
The connection instructions are in the cylinder documentation.
When using a DHW cylinder (circuit flow cylinder) in the heating system,
an automatic air vent valve must be mounted on the cylinder. This also
applies to twin wall cylinders.
When using a circuit flow cylinder in the heating system, an automatic air
vent valve must be installed at the inlet to the cylinder with a micro-
bubble separator.
8.4
DHW cylinder temperature sensorTW1
When a DHW cylinder is connected and TW1 is connected to the system,
this is automatically actuated upon starting.
▶ Connect the hot water temperature sensor TW1 on the installation
module in the control device to terminal TW1.
8.5
Diverter valve VW1
System solutions with a domestic hot water cylinder require a diverter
valve (VW1). Connect the diverter valve VW1 on the installer module in
the indoor unit to terminal VW1 (fig. 18).
Fig. 18
Fig. 19
[A]
To the domestic hot water cylinder
[B]
To the heating system (or buffer cylinder)
[AB] From the indoor unit
Fig. 20 Contact closed, connection A open
During domestic hot water heating, the contact is closed and connection
A is open.
CW1
TW1
1
Summary of Contents for Compress 3000 AWES 2-6
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