W3.260419
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DESCRIPTION OF THE FUNCTIONS
CONTROL FUNCTIONS:
The ventilation unit can be operated from a separate Smart control panel or a compatible CASA cooker hood. When the ventilation unit is controlled from the cooker
hood in the Home/Away/Boost modes and for local extraction, the time can be set to 30, 60 or 120 minutes. The supply air temperature can be manually set with the
water-heated air heater thermostat valve. Whenever necessary, the post heating function can be switched off by setting the thermostat to the zero setting.
Summer operation: In the summer, the extract air is steered past the heat exchanger when the controller opens the bypass cover.
– Freeze protection for water-heated air heater for post heating: The fans will stop if the return water temperature drops below 10 °C, measured on the surface of the
return pipe. The fans start again when the return water temperature reaches the set value 16 °C.
– The air heater for preheat is equipped with an automatic thermostat TZA2 and a thermostat TZ02 with manual reset (set value 90 °C).
– The fans have automatic overtemperature protective devices.
IF THE SAFETY EQUIPMENT TRIPS:
– If an overheating protection with manual reset trips, it can be reset by pressing a reset button above the air heater.
– The automatic overheating protections of the fans will reset themselves when the temperature has dropped below the setting value.
7.7.2 W3 Econo
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1: Group electrical distribution box | 2: Electrical equipment cubicle | 3: Exhaust air | 4: Outdoor air | 5: Power supply: 230 V, 10 A with plug-in
connection | 6: The damming height of the water trap, 100 mm | 7: Supply demarcation of the ventilation unit | 8: Separate extract air, bypasses the
heat exchanger | 9: General ventilation | 10: Supply air | 11: Modular cables with RJ9-connectors | 12: Control panel | 13: Cooker hood
SYMBOL DESIGNATION EXPLANATION
TC1 MANUAL TEMPERATURE CONTROLS Manual temperature control for the post heating air heater, factory settings 17 °C
TV1 SELF-DRIVEN THERMOSTAT VALVE Thermostat valve on the air heater for post heating
TE3 TEMPERATURE SENSOR Thermostat valve’s temperature sensor
T1 TEMPERATURE SENSOR Temperature sensor, outdoor air
T2 TEMPERATURE SENSOR Temperature sensor, supply air downstream of the heat exchanger
T3 TEMPERATURE SENSOR Freeze protection for water-heated air heater for post heating
T4 TEMPERATURE SENSOR Temperature sensor, supply air.
T5 TEMPERATURE SENSOR Temperature sensor, exhaust air
T6–T9 TEMPERATURE SENSOR Connected to SET, the functions are determined through the programming of SET (accessory)
TZ02 OVERHEATING PROTECTION Overheating protection with manual reset
TZA2 OVERHEATING PROTECTION Automatic over temperature protection
SET CONNECTION UNIT Connection unit for Smart control signals
SEM CONNECTION UNIT Connection unit for Smart Modbus/control signals
F1 + F2 FILTER Supply air filter
F3 FILTER Extract air filter
HR HEAT EXCHANGER Heat exchanger
SF1 FAN Supply air fan
EF1 FAN Extract air fan
SD1 DAMPERS Bypass damper summer time
SD2 DAMPERS Shut-off dampers, accessory
SK AIR HEATER/COOLER Electric air heater, accessory
LP AIR HEATER/COOLER Air heater accessory
VP AIR HEATER/COOLER Air cooler, accessory
RH + T SENSOR Humidity and temperature sensor
RH + CO2 SENSOR Humidity/carbon dioxide sensor, accessory
RH + VOC SENSOR Humidity/VOC sensor, accessory
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