Siemens RDG160KN Manuel de service télécharger pdf (Page 31)

Dew point monitoring is essential to prevent condensation on the chilled ceiling

(cooling with fan disabled, parameter P52). It helps avoid associated damage to

the building.

A dew point sensor with a potential-free contact is connected to multifunctional

input X1, X2 or D1. If there is condensation, the cooling valve is fully closed until no

more condensation is detected, and the cooling output is disabled temporarily.

The condensation symbol " " is displayed during temporary override and the fault

"Condensation in room" will be sent via bus.

The input must be commissioned accordingly (P38, P40, P42).

See section 3.9 "Multifunctional input".

If the "Button lock" function is enabled by parameter P14, the buttons will be locked

or unlocked by pressing the right button for 3 seconds.

If "Auto lock" is configured, the thermostat will automatically lock the buttons 10

seconds after the last adjustment.

The external equipment (e.g. fan coil unit) can be switched off via relay output Q3

of the thermostat, in order to reduce energy consumption when the thermostat is in

Protection mode and no temperature control is requested.

The "Switch off in Protection" function is enabled via parameter P74 = 1.

The relay function can be checked via diagnostic parameter d10.

This function is only available for applications with DC 0…10 V fan (DIP 4 = off or

P53 = 3), or for universal applications (without fan).

Dew point monitoring

KNX

Fault state

Fault information

Button lock

Switch

off external

equipment in

Protection mode

(RDG160KN)

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Siemens RDG160KN Manuel de service Page 31