3 Product description
2021/11
9964042x21-mub-en - V02
5
3
Product description
The switch valve set can only be mounted in domestic hot water modules of the type FriwaMidi
or Friwa Maxi from march 2013 on. For other domestic hot water modules, other assembly sets
must be used.
If you have any questions about the required spare parts for your installation, please keep the
serial number ready (it is placed in the lower right corner of the support sheet of the module).
NOTICE
Damage to property!
The location of installation must be dry, load-carrying, frost-proof and protected against
ultraviolet radiation, in order to prevent material damage of the installation.
3.1
Assembly and installation [specialist]
1.
Remove the insulating front shell of
each module.
2.
Close the piston valves (1) and (6)
of the domestic hot water circuit.
3.
Drain the double bent pipe (2) in the cold
water inlet by opening the drain valve (3).
Use a hose for a controlled draining of
the liquid.
4.
Actuate the pressure relief valve (4)
several times to vent the pipe.
5.
Dismount the pipe (2) in the cold water
inlet of the module between the piston
valve (1) and the connection piece (5)
at the heat exchanger.
