Setpoint Selection; Control Logic - AERMEC TX Instalación

SETPOINT SELECTION

CONTROL LOGIC

The TX/TXI thermostat can equip the fan coils with multi-speed asynchronous motors and brushless motors.
ADJUSTMENT LOGIC
There are two options for the thermostat operating logic.
3-LEVEL THERMOSTAT
The figure below shows the fan operating in Automatic mode (selector on AUTO) on the basis of the proportional error.
In Manual mode (selector on position V1, V2 or V3), the fan follows On-Off cycles at the selected speed, whereas in Auto it follows
On-Off cycles according to the thresholds of speed V1. If the fan coil is equipped with an electric heater, each single activation of the
heater will require a pre-ventilation phase of about 20" at speed V1. Once the request for ventilation with heater enabled has been
fulfilled, there will be a 60" post-ventilation phase at speed V1.
The paragraph "Enabling ventilation" explains the fan enabling/disabling logic in relation to the temperature of the water in the heat
exchanger, whereas "Electric heater" explains how ventilation with an active heater works.
The dead band shown in the figure may be equal to 2°C or 5°C, depending on the setting of dip 7.
Heating
12°C
14°C
Cooling
17°C
V3
V2
V1
Heating setting
SET C
28°C
30°C
33°C DIP 7 OFF
Dead band
Zona morta
Cooling setting
SET F
1904 - 5902720_00
DIP 7 ON
V3
V2
V1
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