Control Diagram - Swegon CASA W4 Smart Installation, Operation And Maintenance Instructions

7.7 Control diagram

7.7.1 W4
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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
TC01 TEMPERATURE CONTROL
T1 TEMPERATURE SENSOR
T2 TEMPERATURE SENSOR
T3 TEMPERATURE SENSOR
T4 TEMPERATURE SENSOR
T5 TEMPERATURE SENSOR
T7 TEMPERATURE SENSOR
T8 TEMPERATURE SENSOR
TZ01, TZ02 OVERHEATING PROTECTION
TV1 ACTUATOR + VALVE
CC1 AIR COOLER
F1 + F2 FILTER
F3 FILTER
HR HEAT EXCHANGER
SF1 FAN
EF1 FAN
SD1 DAMPER
SD2 DAMPER
RH SENSOR
RH + CO2 SENSOR
RH + VOC SENSOR
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 is controlled from the control panel. When necessary, the reheating function can also be switched off from the control panel.
Summer operation: In the summer, the extract air is steered past the heat exchanger when the controller opens the bypass cover.
– The air heater for reheating is equipped with a manually re-settable TZ01 automatic thermostat (preset limit value: 90 °C) as protection against overheating.
– The air heater is equipped with a TZ02 automatic thermostat with manual reset (preset limit value 90 °C) as protection against overheating.
– 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.
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EXPLANATION
Temperature control for the reheating air heater
Temperature sensor, outdoor air
Temperature sensor, supply air downstream of the heat exchanger
Temperature sensor, extract air
Temperature sensor, supply air. T4 (3 m), accessories: if necessary cable routing to duct (e.g. for cooling).
Temperature sensor, exhaust air
Excess temperature sensor for the preheating air heater
Room temperature sensor, accessory, separate cable routing
Overheating protection with manual reset
Three-way valve + actuator, control according to the room temperature, accessories
Duct cooler for cooling, accessory
Supply air filter
Extract air filter
Heat exchanger
Supply air fan
Extract air fan
Bypass damper for summer time
Shut-off dampers, accessory
Moisture sensor
Humidity/carbon dioxide sensor (accessory)
Humidity/VOC sensor (accessory)
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Swegon reserves the right to alter specifications.
W4.311016
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