Application manual
KNX room temperature controller EK-EQ2-TP
Release 3.00 - Updating: 27/06/2017
Application Manual
© SBS S.p.A. - All rights reserved
Page 61
The
Ventilation
folder, that is unique, configures a main or a auxiliary stage depending on the settings
choosed in the
Heating
and
Cooling
folders. Similarly, the display interface will act on manual / automatic
and manual forcing of the only fan-coil.
A particular case occurs when a fan-coil unit works in a season as auxiliary stage and in the other one as
main stage. It is for example the case of:
a radiant panels system that works only for heating and has a fan-coil as auxiliary stage; the same
fan-coil works as main stage for cooling;
a radiator system that has a fan-coil as auxiliary stage for heating; the same fan coil unit functions
as main stage for cooling.
In these cases with the configuration adopted, the following steps are necessary:
1.
Settings
Thermostat function = both heating and cooling. This configuration enables both folders
(heating and cooling)
2.
Heating
Heating type = floor radiant panels or ceiling radiant panels
3.
Heating
Command communication object = separated (if unique is choosen, the parameter Cooling
Cooling type does not appear)
4.
Heating
Auxiliary heating = enabled
5.
Auxiliary heating
Communication object = separated
6.
Heating
Ventilation for auxiliary heating = enabled
7.
Cooling
Cooling type = fancoils
Important!
If the fan-coil system has a 2-pipe hydraulic configuration, the objects 163 Auxiliary heating
output command (1 bit) and 162 Cooling out command (1 byte) have to be set in logical OR in the actuator
for controlling the fan-coil which in this case is unique.
An alternative solution that avoids the setting of a logic OR can be realized by configuring a main stage for
heating and cooling with radiant panels through separate valves and an auxiliary stage for heating and
cooling fan coil through combined valves. The offset of the auxialiary stage for cooling is set to the value 0
(zero); this corresponds to a configuration for main stage. The object Cooling out command (1 byte) is not
connected, so that the radiant panel system works only for heating.
7.8.4.5
Remote fan speed modification
The communication objects shown in figure allow to monitor actiual fan speed forced automatically (A) by the
temperature controller or set locally by the user when interacting with the LCD display and the touch buttons
of the room thermostat. The communication objects (from now on: C.O.) also allow to perform the same
modifications remotely, for example from a supervisor software.
77
– Fan speed status [5.010 counter]
78
– Fan manual active status [1.011 state]
76
– Fan manual speed [5.010 counter]