is displayed, the fan is switched OFF. Depending
upon the given application configuration, the effective
control mode for underfloor heating, radiator, ceiling
heating, and ceiling cooling can then be switched OFF as
well.
Configuring the TR42x for Heating / Cooling
With the TR42x, the user can select whether he wants to
have:
▪ cooling (
).
By doing so, inadvertent heating or cooling is prevented.
Selecting "auto" results in automatic switching between
cooling and heating.
To make these selections, the user must enter the
expanded menu (see section below).
Expanded Menu
The user can enter the expanded menu at any time (i.e., in
any mode). This is done by touching both upper softkeys
simultaneously (see Fig. 3). The "temperature" screen
appears first. The user can scroll to further screens
("heating / cooling," "relative humidity," and "CO
2
concentration") using the left ( ) or right ( ) arrow softkey.
NOTE: The user can, at any time, exit the expanded menu
using the upper left softkey (below the " "
symbol or the word "HOME") – or by simply waiting
approx. 60 seconds.
In the expanded menu, the current temperature, relative
humidity, and CO
2
concentration can be displayed.
The user can change automatic heating / cooling by
scrolling (arrow softkeys) to the "heating / cooling" screen
and then touching the upper right softkey, (below the " "
symbol or the word "EDIT"). The actual setting will then
flash at 1 Hz for approx. 7 seconds, during which time the
user can either cancel the given setting (upper left softkey,
below the " " symbol or the word "CANCEL") or confirm it
(upper right softkey, below the " " symbol or the word
"DONE"). If no action is taken within this time, the given
setting is automatically confirmed.
Fig. 179. Accessing the expanded menu
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