User manual
3939
Retaining ring
The valves of a number of suppliers can exhibit tolerance
variations, which may lead to the programmable radiator
control unit being seated too loosely on the valve. The sta-
bility and seating on the valve can be improved by using
the enclosed retaining ring. Place the retaining ring (G) in
the ange or on the valve connection of the radiator and
screw the thermostat valve on.
If the retaining ring can not be tted, the stability is already
sufcient and the ring is not required for the installation.
G