58
HYDRAULIC CONNECTION FOR INDOOR UNIT
ENGLISH
Expansion vessel (Accessory)
Shut-off valve
Check valve
Circulation pump
Safety valve (10 bar)
Pressure reducing valve
Domestic hot water(DHW)
Domestic cold water
DHW re-circulation (Optional)
CAUTION
!
• Because different materials are used on the pipe installation, all connections on the device
(cold and hot water, circulation, heat conductor) have to be galvanically isolated; otherwise
corrosion of connections can occur on the inner side of the buffer tank for DHW. We
recommend placing galvanic isolators made of red brass the length of at least twice the
diameter of the pipe on the connections.
• The DHW tank is intended for storing drinking water, this is why the water has to be in
accordance with the national regulations on drinking water in force; otherwise, damage to
the device and a termination of the warranty can arise.
• The unit is equipped with a safety valve with a rated pressure of 1 MPa (10 bar).
• In addition, it is necessary to install either a DHW expansion vessel. Alternatively, another
pressure relief valve must be installed with suitable set point lower than that of the safety
valve. Such a valve would need to be equipped with a hose and connected to a sink.