AIR TREATMENT
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Warm and cold draught protection : This feature stops the fan when the set point condition is satisfied and the water temperature is too low or too high , ensuring that air that is too cold or too warm does not cause discomfort to the room occupants .
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Air sensor : This is unit-mounted – if the control is wall mounted , a second air sensor located in the control can be used for fine tuning of the desired room temperature .
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Frost protection : This function ensures that the room temperature is kept above a minimum level . If the unit is in off mode , and the room temperature drops below 7 ° C , frost protection is enabled and the unit operates in heating mode until the temperature rises above 9 ° C . At this point the unit is switched off again .
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Booster heating management optimization ( available with electric heater option ): If the water temperature is below 30 ° C the system will work in the heat demand mode and the electric heater will be the only available heating source . If the water temperature is above 35 ° C the system will work in the booster heating mode , energising the water valve and electric heater together . The booster heating function will be deactivated if the water temperature is above 45 ° C ( the electric heater will be de-energised ).
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Energy saving : This feature allows saving energy when the room is unoccupied , without the need to switch off the unit . When 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 : - Cooling mode : Set point raised by 4 ° C - Heating mode : Set point lowered by 4 ° C The unit will resume normal operation , once the energy saving button is pressed again .
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LED intensity : For offices or light commercial applications , 10 seconds after the latest use of the user interface , all the necessary LEDs are lighted on at a reduced intensity . As soon as the user touches again the user interface , LED have to come back to normal light . In order not to disturb hotels customers , the thermostat can be configured from Night Mode to Dark Mode : 10 seconds after the latest use of user interface , all the LEDs are switched off . As soon as the user touches again the user interface , LEDs of the current condition are switched on with normal light .
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Air sampling : If no fan request is made and the Air sampling jumper is in ON position , the control performs the Air sampling function : the air is moved in the room , thermal stratification is reduced , ensuring a more reliable ambient temperature reading .
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Continuous fan : If there is no fan request and the Continuous fan jumper is in ON position , the control selects fan speed Low , Medium or High according to the fan-speed selection , regardless of thermal station conditions . If the fan is controlled in Auto fan mode and the control is not in the demand phase , the fan is permanently activated at Low speed .
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External contact : A high voltage input signal for external contact is present . If the external contact is activated , device behaviour depends on its configuration on site : - Presence detection ( empty room with hotel door card ), Energy saving mode is activated , internal temperature is raised by 4 ° C in cooling mode and reduced by 4 ° C in heating mode . - Window Contact : During OFF mode ( window open ), all outputs are disconnected ( fan , valves , etc .) and only the frost protection .
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Master / Slave control : Thermostat type A _ AC and B _ AC : the Control Board for grouping accessory ( 42N9006 ) is allowing fan speed relay only ( water valves have to be wired / relayed separately ) up to 300 units with control on Air temperature ( no water valve ), or 10 units 2 pipe with water control , or 5 units 4 pipe with water control - Thermostat type C _ EC and D _ EC : The Thermostat EC motor version can control up to 10 LEC units by wiring in parallel the analogue 0-10 two-wires output signal ( water valves have to be wired / relayed separately ).
NTC controller
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This is a communicating PID controller , combining energysaving algorithms and full control function solutions , compatible with the Aquasmart Evolution system package . The NTC controller can manage the EC motor option , and combines energy savings with optimised comfort .
WTC Controller
-- Open Communication protocol BACnet or LON
-- Communication PID controller
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Large range of user interfaces wall mounted or remote
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Manage the motorized louvers of the grill in manual or automatic
-- Manage the EC motor to optimise the comfort
-- Manage a CO2 sensor to improve Air Quality
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Optional Light and / or Blinds management modules from same user interface
-- Large range of sensors ( light , presence , etc .)
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Valve options Valve options
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Valve body : both the two-way or four-way ( three-way with integrated bypass ) valve options are factory-fitted and tested . The chilled-water valves are fully insulated within a moulded insulating shell , preventing condensation on the valve body , for both vertical and horizontal applications . This new shell reduces the complexity of the offer and prevents water leakage risk . Valves can be factory-fitted on the left or right-hand side .
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Valve actuators : a wide choice of actuators is available with two or four-way valve bodies to offer the right solution for any controller type and customer requirement , from on / off to proportional types , with either 230 V or 24 V power supply :
-- On / off 230 V actuator
-- On / off 24 V actuator
-- Floating 3-point 230 V actuator
-- Floating 3-point 24 V actuator
-- Modulating 0-10 V / 24 V actuator
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When combined with LEC motors and the NTC controller , floating three-point 230-V actuators are recommended to increase energy savings and enhance comfort .
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