Manual HomeMatic HM-CC-RT-DN (page 34 of 53) (English, German)

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7.3.1 Removing the old dial

In case of visible damage of the existing radia-

tor, valve or heating pipes, please consult a spe-

cialist.

Rotate the thermostat dial to the maximum value (A)

(anti-clockwise)(seeg.p.67).Thethermostatdial

then no longer presses against the valve spindle, ma-

king it easier to remove.

Therearedifferentwaysofxingthepositionofthe

thermostat dial:

• Union nut: Unscrew the union nut in an anticlock-

wise direction (B). The thermostat dial can then be

removed (C).

• Snap-on fastenings: Thermostat dials that have

been attached using this method can be easily relea-

sed by giving the lock/union nut a slight turn in the

anticlockwise direction. The thermostat dial can then

be removed (C).

• Compressiontting: The thermostat dial is held in

place by a mounting ring which is held together with

a screw. Slacken this screw and remove the thermo-

stat dial from the valve (C).

• Threaded connection with set screw: Slacken the

grub screw and remove the thermostat dial (C).

7.3.2 Adapter for Danfoss

One of the provided adapters is needed to attach to

Danfoss valves. The assignment of the suitable adap-

ter ring to the relevant valve can be found in the follow-

ing illustrations.

Pleaseensurethatyoudonottrapyourngers

between the two halves of the adapter!

The Danfoss valve bodies have elongated notches (D)

around their circumference (see p. 68), which also en-

sure that the adaptor is properly seated when it snaps

on.

During installation, please ensure that the pins inside

the adapter (E) are lined up with the notches (D) on

the valve. Ensure that a suitable adapter for the valve

is properly clipped on.

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HomeMatic HM-CC-RT-DN Manual

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