Envistar Flex

Air handling unit with rotary heat exchanger

Innovative air handling unit with integrated controls and a wide range of functional sections.

Why choose Envistar Flex?

Envistar Flex is available with a wide range of functional sections, fans, motors and heat recovery units, providing excellent conditions for energy-optimised air handling.

Envistar Flex can be delivered in sections to facilitate transport into the building. There are also versions that are designed especially to be placed outdoors.

The units are designed for comfort ventilation of premises and are suitable for most types of property, e.g. schools, offices, hotels, shopping centres, industrial premises and hospitals.

Envistar Flex – air handling units with high flexibility. Here in an outdoor version on the roof of battery manufacturer Modine.

Airflow

0.10–13.0 m³/s

18 sizes

High flexibility and large airflow range

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Can be controlled and monitored via cloud service

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Cost-effective

Low installation and operating costs

Patented defrosting

ODS Optimised Defrosting System ensures the highest possible annual efficiency

Integrated cooling unit

Option: EcoCooler, also with cooling recovery. Stepless control of cooling power via frequency converter.

Comfort cooling and heat pump in one

Option: The reversible heat pump ThermoCooler HP with stepless control of cooling and heating power

Optimised energy efficiency

Energy optimisation function – ECO

Efficient fans

The fans have PM motors with EC or frequency converter control

Wide selection of sections

Mixing section, recirculation section and much more available as options

For all weather conditions

Available in outdoor configuration

Air flow ranges for Envistar Flex

m³/hm³/s


	Ecodesign Technical max	Rotor	Rotor w/ cooling unit	Reversible heat pump	Counter-flow exchanger	Counter-flow exchanger w/ cooling unit	Plate heat exchanger	Coil heat exchanger double-stacked	Coil heat exchanger
1580
1540
1280
1250
1080
980
850
740
600
480
400
360
300
240
190
150
100
060
	m³/s 0.0 3.2 6.4 9.6 12.8 16.0

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m³/hm³/s

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Envistar Flex with rotary heat exchanger

Air flow

Min:0.11m³/s

Max:15.46m³/s

Envistar Flex with rotary heat exchanger and EcoCooler

Air flow

Min:0.22m³/s

Max:11.46m³/s

Envistar Flex with rotary heat exchanger and ThermoCooler HP

Air flow

Min:0.25m³/s

Max:11.46m³/s

Envistar Flex with counter-flow heat exchanger

Air flow

Min:0.13m³/s

Max:8.5m³/s

Envistar Flex with counter-flow heat exchanger and EcoCooler

Air flow

Min:0.22m³/s

Max:8.06m³/s

IV Produkt Designer Product selection software

For object-specific data, use our product selection software

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Envistar Flex med plate heat exchanger

Air flow

Min:0.33m³/s

Max:14m³/s

Envistar Flex with plate heat exchanger and EcoCooler

Air flow

Min:0.33m³/s

Max:11.46m³/s

Envistar Flex with coil recovery

Air flow

Min:0.11m³/s

Max:14.1m³/s

Envistar Flex with coil recovery and EcoCooler

Air flow

Min:0.22m³/s

Max:11.46m³/s

Envistar Flex in single-stacked configuration

Air flow

Min:0.11m³/s

Max:11.2m³/s

Envistar Flex in Single-stacked configuration with coil recovery

Air flow

Min:0.11m³/s

Max:9.5m³/s

Envistar Flex Supply Air Unit

Air flow

Min:0.11m³/s

Max:11.2m³/s

Envistar Flex Extract air unit

Air flow

Min:0.11m³/s

Max:11.2m³/s

Technical dataforEnvistar Flex with rotary heat exchanger

Here you will find dimensions and weights as well as power and performance information about Envistar Flex with rotary heat exchanger .

m³/hm³/s

Size	Air flow (m³/s)				Dimension (mm)					Control unit location	Weight (kg)	System voltage
Size	Min	SFP_v1,5	Ecodesign	Max	Width	Height	Length	Width duct connection	Height duct connection	Control unit location	Weight (kg)	System voltage
60	0.11	0.46	0.6	0.6	890	960	1760	500	300	On unit roof	395	400VAC
100	0.17	0.74	0.99	1.06	1020	1090	1760	700	300	On unit roof	450	400VAC
150	0.29	1.13	1.4	1.7	1120	1470	1980	800	500	On unit roof	595	400VAC
190	0.38	1.59	1.91	2.2	1400	1470	1980	1000	500	On unit roof	670	400VAC
240	0.47	1.91	2.26	2.6	1450	1686	2570	1000	600	On unit end	755	400VAC
300	0.54	2.35	2.81	3.3	1666	1686	2570	1200	600	On unit end	835	400VAC
360	0.66	2.54	3.11	3.8	1666	2060	2200	1200	800	On unit end	1020	400VAC
400	0.66	3.1	3.56	4	1930	1900	2200	1400	700	On unit end	995	400VAC
480	0.85	3.74	4.38	5.2	2040	2060	2200	1400	800	On unit end	1375	400VAC
600	1.06	4.58	5.34	6	2250	2270	2200	1600	800	On unit end	1560	400VAC
740	1.19	5.64	6.83	8.3	2480	2480	2820	2000	900	In unit next to fan	1970	400VAC
850	1.35	6.95	8.28	10	2610	2740	2820	2200	1000	In unit next to fan	2200	400VAC
980	1.66	7.42	8.93	10.6	2860	2890	2820	2400	1100	In unit next to fan	2485	400VAC
1080	1.95	8.23	9.98	11.63	3000	3000	2960	2400	1100	In unit next to fan	-	400VAC
1250	1.75	8.96	10.76	11.21	3180	3180	2960	2200	1200	In unit next to fan	-	400VAC
1280	2.24	9.37	11.16	12.9	3180	3180	2960	2600	1200	In unit next to fan	-	400VAC
1540	2.35	10.33	12.3	14.98	3180	3360	2960	2600	1200	In unit next to fan	-	400VAC
1580	2.48	11.47	13.21	15.46	3500	3500	3020	3000	1200	In unit next to fan	-	400VAC

Technical data for related products

Documentation forEnvistar Flex Rotary Heat Exchanger

Here you will find general documentation for this product series. Download the latest versions of product brochures, instruction manuals, certificates, and other documents.

Your air handling unit

If you are looking for information about your AHU, search using the order number.

Document	Document type	Language	Version
Brochure Envistar	Brochure	English	3	9/2024
Operation and maintenance EcoCooler	Operation and maintenance	English	05	9/2025
Operation and maintenance Envistar Flex	Operation and maintenance	English	01	2/2026
Connection instructions Air treatment unit	Connection instructions	English	05	5/2025
Commissioning record AHU	Commissioning	English	06	12/2025
Assembly Instructions Envistar Flex	Assembly instruction	English	07	10/2025
Dokument under framtagning lyftinstruktion	Assembly instruction	English	00	11/2025
Immersion detector	Assembly instruction	Swedish/English	-	-
lyftinstruktioner	Assembly instruction	English	-	-
BACnet addresses for Counter flow, Plate and Run around coil heat exchangers, examples	Configuration and settings	English	-	-
BACnet Addresses for EcoCooler and ZON, examples	Configuration and settings	English	-	-
BACnet IP communication, object addresses for AHU V1 en	Configuration and settings	English	-	-
Climatix Hand-held Terminal	Configuration and settings	Swedish	02	-
Climatix Touch screen manual	Configuration and settings	English	-	-
Example AHU Modbus	Configuration and settings	English	-	-
Examples of useful Modbus addresses	Configuration and settings	English	-	-
Modbus Zone 1	Configuration and settings	English	-	-
Modbus Zone 2	Configuration and settings	English	-	-
Modbus Zone 3	Configuration and settings	English	-	-
Modbus Zone 4	Configuration and settings	English	-	-
Modbus Zone 5	Configuration and settings	English	-	-
Wi-Fi router, description and configuration	Configuration and settings	English	V3	-
Connect safely with IV Produkt Cloud	Product sheet Connection instructions	English	-	-
Product sheet EMMT-07 Interior Light Fitting, Technical Data	Product sheet	English	-	2022
Product sheet Pipe coupling EXLP	Product sheet	English	00	1/2026
BACnet conformance certificate en	Certificates and declarations	English	-	-
EPD Environmental Product Declaration – Envistar Flex	Certificates and declarations	English	-	2025
Eurovent Certification Envistar	Certificates and declarations	English	-	2/2025
STA-04 Return air control	Control code	English	-	-
STC-01 Outdoor air damper	Control code	English	-	-

Document	Document type	Language	Version		Download/Share
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Control equipment with proprietary software

The entire range has integrated control equipment with software developed by us. We use Siemens Climatix hardware. The control equipment offers over 100 standard features to choose from so that you can optimise according to your needs. Air flow rates and temperatures can be optimised easily. The units can be connected to the web, IV Produkt Cloud or a parent system (BMS) via multiple communication protocols.

Project-specific electrical and control diagrams are included in the delivery. The unit has been function-tested and is ready for commissioning.

Easy site transportation of Envistar Flex
with ThermoCooler HP

Thanks to the smart solutions of split design for the rotary heat exchanger and the reversible heat pump ThermoCooler HP, this large unit is easily transported through a standard door. To learn more, watch the video and get some helpful tips along the way!

Air flow: 4.5 m³/s
Unit size (mounted): W 2220 x H 2465 x L 3760 mm
Split in: 11 sections
Door size: 2100 x 900 mm

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Full control with IV Produkt Cloud

IV Produkt Cloud is a cloud service for our air handling units with integrated controls, giving you and your colleagues the ability to monitor your systems wherever you are.