CONTROL SOLUTIONS THERMOSTATS
Features and advantages
■■ LED intensity (offices or light commercial applications) 10 seconds after the last user interface use all LEDs are
reduced in intensity. To avoid disturbing hotel guests, the
thermostat can be configured from “Night Mode” to “Dark
Mode”: 10 seconds after the last user interface use, all
LEDs are switched off.
■■ Air sampling: with no fan request and the air sampling
jumper in ON position, the control performs the air
sampling function. The air in the room is moved, thermal
stratification is reduced for a more reliable ambient
temperature reading.
■■ Continuous fan (no fan request and continuous fan
jumper ON): the control selects the fan speed, regardless
of thermal station conditions. With fan in auto fan
mode and control not in the demand phase, the fan
pe rmanently runs at low speed.
■■ External contact: A high voltage input signal for external
contact is present. If the contact is activated, device
behaviour depends on its configuration on site:
-- Presence detection energy saving mode is activated,
room temperature is raised by 4 K in cooling mode
and reduced by 4 K in heating mode.
-- Window contact: in OFF mode (window open), all
outputs are disconnected (fan, valves, etc.) and only
the frost protection function is active, if enabled.
CONTROLS
■■ Auto fan: the control automatically sets the fan speed. If
the room temperature is far from the set point, high fan
speed is selected. As the room temperature approaches
the desired value, the fan speed decreases to the
minimum speed.
■■ Automatic changeover from cooling to heating mode,
based on the water temperature, ensures that the ideal
room temperature is maintained.
■■ Remote changeover - automatic changeover from cooling
to heating mode, based on the remote signal from the
monitoring system.
■■ Frost protection keeps the room temperature above a
minimum level.
■■ Booster heating control optimisation (with electric heater
option): with the water temperature below 30°C the
system will be in heat demand mode and the electric
heater is the only available heating source. If the water
temperature is above 35°C the system will be in booster
heating mode, energising water valve and electric
heater together. This function is deactivated if the water
temperature is above 45°C (the electric heater will be deenergised).
■■ Energy saving when the room is unoccupied, without the
need to switch off the unit. If the energy-saving button is
pressed, the actual set point will be modified as follows,
without changing the position of the set point selection
knob: ± 4 K.
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