
Application manual
Air quality multisensor and regulator EK-ES2-TP
Release 1.0 - Updated: 14/02/2020
Application Manual
© EKINEX S.p.A. - All rights reserved
Page 96
10
Compatibility with KNX actuators
The Multisensor device offers compatibility with some KNX actuators for VAV flow regulators and 6-way zone
valve management.
10.1
Compatibility with VAV flow regulators
Compatibility with VAV (Variable Air Volume) flow regulators, such as the Belimo LM24A-KNX, is aimed at
applications for air quality control.
There is also the possibility of interacting with actuators such as Belimo LMV-D3-KNX and NMV-D3-KNX,
which also include an integrated pressure sensor, in order to create pressure-independent applications.
From the EK-ES2-TP multisensor point of view, the presence of the pressure sensor has no influence: in fact,
the multisensor always sends a value expressed as a percentage (CO 56: Thermostat - Heating and cooling
control).
If a pressure sensor is present, the regulation is done by the Belimo actuator, depending on the measured
pressure value.
10.2
Compatibility with 6-way zone valve
Compatibility with actuators for 6-way valves management (such as, for example, the Belimo LR24A-KNX) is
aimed at applications for climate control.
The use of 6-way valves allows to control the flow of hot or cold heat transfer fluid to be sent to terminals.
Typical examples are radiant ceiling systems, cold beams and fan coils used for the air conditioning of non-
residential environments, in combination with the 4-way hydraulic distribution pipes, in which cold and hot fluids
are simultaneously available.
A single 6-way valve can be used instead of 4 two-way valves without the need to provide interlocking of the
servomotors, and guaranteeing no leakage. For the 6-way valve, Belimo has developed the LR24A-KNX
servomotor equipped with KNX native communication.
To ensure compatibility with these actuators, a combined heating / cooling sequence must be created in the
multisensor using the 1-byte communication object
Setpoint
(Datapoint 5.001_Scaling% [0 ... 100]) made
available by the actuator Belimo with Write permission.
The unique control sequence for CO
Setpoint
is as follows:
• object value in range 0 ... 33% → cooling operation;
• object value in range 33 ... 66% → neutral zone (neither cooling nor cooling)
• object value in range 66 ... 100% → heating operation
Picture 23 – Control sequence for 6-way valve