TECH ST-408, User Manual, Page: 13 / 28

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IV.c) TECH room regulator
This option allows to activate/disable the activity of TECH room
regulator. To cooperate with an applicable valve, this type of "room
regulator", should be additionally activated, together with the applicable
operation mode, in a relevant valve menu.
TECH regulator is equipped with RS communication and is connected to
the controller with a four-core communication wire (RJ type – "telephone"
plugs). ST-408 controller may serve only for one TECH room regulator (it can
be additionally connected to two standard regulators).
If TECH room regulator is activated, a user, apart from room control,
has the possibility to change: the preset temperatures of active valves, the
furnace temperature directly from room regulator, without the need to go
down to the furnace room. Additional advantages of the device are: the
access to the history of temperatures in the form of clear charts, light
signaling of all assembly controller alarms, external temperature monitoring
(in cooperation with ST-61 valve module), possibility of setting the weekly
program, etc.
IV.d) Voltage-free contact
The controller may cooperate with any external device activated on the
basis of contact/opening. Output of the voltage-free contact is controlled with
the use of:
- room regulator (when the room regulator does not reach the set value – the
contact is closed, after reaching the set value, the contact opens).
- weekly control (the user sets time intervals with the accuracy to 30 minutes,
in marked intervals, the contact will close).
IV.e) Valve 1
With the use of functions contained in this submenu, the changes are
made in the settings of any parameters of valve 1 , in such a way that it works
correctly and in accordance with user expectation.
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