Tech Controllers EL480zPID, User Manual, Page: 15 / 28

EL480zPID
15
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).
III.a.12) Factory settings
This parameter allows you to restore the mixing valve settings saved by the manufacturer. By
restoring the factory settings you will not change the valve type setting (central heating or floor
type).