ST – 480
TECH) room thermostat. When the room thermostat reaches the desired
temperature in the house/flat (reports heated up condition), the valve will close
to such an extent so that the temperature downstream of the valve drops by
the
<room thermostat reduction>
temperature.
NOTE: If the installation includes a TECH room thermostat with RS
communication (four-wire cable), you may choose an option providing dynamic
control for the mixing valve (see Section III.a.11)
III.a.11) Operation of TECH thermostat
This setting is active only if the controller is connected with a TECH room
thermostat (with RS communication) and allows a choice in how the thermostat
is to work together with the mixing valve:
temperature reduction
– when you select this mode after heating up
the house/flat to your required temperature set-point temperature the TECH
room thermostat will lower the set-point temperature of the valve by the pre-
set
room thermostat reduction
value (see Section II.a.10);
dynamic changes
- when you select this mode after heating up the
house/flat to the set-point temperature the TECH room thermostat will work as
per the following settings:
Change in valve set-point.
This setting determines by how many
degrees the valve temperature is to increase or decrease with a single unit
change in room temperature. This function is closely related to the
Room
temperature difference
parameter.
Room temperature difference.
This setting is used to define the single
unit change in the current room temperature (accurate to 0.1°C) at which there
is to occur a specific change in the set-point temperature of the valve.
Example:
setting:
Room temperature difference
0.5ºC
setting:
Change in set-point valve temperature
1ºC
setting:
Set-point valve temperature
40ºC
setting:
Set-point
room thermostat
temperature
23ºC
Case 1.
If the room temperature rises to 23.5ºC (by 0.5ºC) the valve will close
to such an extent as to have 39ºC as a set-point (by 1ºC).
Case 2.
If the room temperature drops to 22ºC (by 1ºC) the valve will open to
such an extent as to have 42ºC as a set-point (by 2ºC).
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