6 Assembly and installation [specialist]
2014/11
99640766x-mub-en – V03
13
6
Assembly and installation [specialist]
The domestic hot water module FriwaMega must only be connected with the storage tank by
separate connections for flow and return. External pumps must not be installed between the
domestic hot water module and the buffer tank. The circulation of water causes considerable
temperature fluctuations.
The domestic hot water connection must be carried out in accordance with the relevant norms
(for example DIN 1988)!
NOTICE
Damage to property!
The pressure relief valve integrated in the station does not replace the safety groups of the
potable water connection as per DIN 1988. The pressure relief valve only protects the module
from overpressures in case of servicing.
NOTICE
Damage to property!
If there are water supplies that may cause pressure surges (for example flush valves, washing
machines or dishwashers) connected to the same mains as the domestic hot water module,
we recommend the installation of water hammer arresters close to the place where these
pressure surges may be caused.
DHW
module
Fittings
Drain valve
Pressure relief valve
Return valve (non-return valve)
Evtl. pressure reducing valve
Test valve
Shut-off valve
Hot water
Cold water
