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Smart ventilation units from 2015-2024

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ProCASA Designer W3	Learn more ProCASA Designer tool for system configuration definition.	xls
ProCASA Tutorial video W3		video
Functional Diagram (DWG) W3	Learn more System functional diagram, functional description, Connection and Configuration. Use ProCASA Designer to configure functional diagram layer visibility.	dwg
Functional Diagram (PDF) W3		pdf
Technical catalogue W3	Learn more Technical catalogue	pdf
Installation, commissioning and maintenance instruction W3		pdf
eManual W3	Learn more Genius eManual	web
Modbus register definition W3	Learn more Modbus register addesses and info	pdf
Declaration of conformity (Air handling unit) W3		pdf
Declaration of conformity (Cooker Hood) W3		pdf

Energy calculator

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-24,9°C ... 29,9°C

Data from TRY 2020

Include Finnish regulation

Select and print pages

Energy calculation and dimensions ErP Specification (NRVU units)

Project

Customer

Location

Default values

Supply air

Extract air

Air flow

Duct pressure

Click here for dynamic fan curves

Cooker hood airflow

Learn more

Airflow can either be extracted from a seperate roof fan, or via by-pass from the AHU (selected models). In both cases without heat recovery.

usage time per day

Indoor temperature 21°C

Minimum supply air temperature (+10°C…+21°C)

Slider:

*) Additional accessories may be needed

Eco-Design requirements

SEC class:

SEC cold / average / warm climates

-72.6 -36 -12.5 / kWh/a.m2

Max airflow rate

80 l/s

Sound power level:

39 dB(A)

This unit can be equipped with:

Learn more

Central = DCV with one sensor
Local = DCV with more than one

Clock control*

Central demand control*

Local demand control*

W3 is ventilation unit with counterflow heat exchanger

Fan power and energy use EN13141-7

Supply air	33 W
Extract air	25 W
SPI	0.32 W / (m³/h)
SFP	1.17 kW / (m³/s)	Learn more Measurements made according to EN 13141-7.
Annual energy use of fans	512 kWh

Energy used to heat the air EN13141-7

Preheating	514 kWh
Reheating 17 °C	63 kWh	76W peak load
Heating the supply air to 21 °C	1244 kWh	Learn more Heating the supply air is energy consumption consumed when supply air is heated to 21 °C degrees.
Heating the infiltraded air to 21 °C	0 kWh	Learn more Warming of infiltrated air is energy consumption consumed when leakage air (outdoor air coming inside from cracks etc.) is heated to 21 °C
Energy used to heat up ventilated air to 21 °C	1821 kWh
Energy used without heat recovery	7502 kWh
Annual energy efficiency for room	75.7 %	Learn more The part of the annual energy that the unit recovers up to room temperature 21 °C

Heating the infiltraded air to 17 °C	0 kWh
Energy used to heat up ventilated air to 17 °C	577 kWh
Annual energy efficiency for AHU (17 °C)	92 %	Learn more The part of the annual energy that the unit recovers up to selected supply air temperature

Temperature efficiency of heat exchanger	81 %	Learn more Heat exchanger efficiency according to SFS-EN308
Temperature efficiency of air handling unit	81 %	Learn more SFS-EN13141-7 (including fans)
Humidity recovery	0 %

Acoustic data
Octave band (Hz)	63, L_W	125, L_W	250, L_W	500, L_W	1k, L_W	2k, L_W	4k, L_W	8k, L_W	L_wa
Sound preassure emmited to:	dB	dB	dB	dB	dB	dB	dB	dB	dB(A)
supply air duct	73	73	66	60	56	52	48	43	64
extract air duct	61	56	53	49	38	35	27	24	50
outdoor air duct	63	59	55	49	39	35	26	23	51
exhaust air duct	74	71	65	58	53	50	46	41	62
kitchen bypass duct	75	59	52	46	43	36	28	24	52
surroundings	53	49	44	32	25	15	15	13	38

surroundings at -4dB sound attenuation							L_pa, dB(A)		34

Swegon Casa

Finnish national regulations

E -value calculation

Select heating mode

Energy form factor
1.2

Energy production

Efficiency
97 %

Heating system

Efficiency
90 %

Finnish national regulations

AHU temperature efficiency 1:1	78.4 %	Learn more Calculations are done according Finnish national building regulations part D3, D5:2012 and Balancing Calculation Guide 2018 by The Ministry of Environment
Defrost start limit	2.0 °C
Annual efficiency of the exhaust air	73.6 %

Preheating	874 kWh
Reheating	108 kWh
Heating the supply air to	1710 kWh
Heating the infiltraded air to	0 kWh
Energy used to heat up ventilated air to	2691 kWh

Print datasheet with national regulations