Envistar Flex – EcoCooler

Air handling unit with rotary heat exchanger and cooling unit

Air handling unit with integrated controls and a wide range of functional sections. Integrated cooling unit with stepless cooling capacity.

View air flow ranges

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 air flow Technical max air flow	Rotor w/ cooling unit	Rotor	Reversible heat pump	Counter-flow exchanger	Counter-flow exchanger w/ cooling unit	Plate heat exchanger	Coil heat exchanger double-stacked	Coil heat exchanger
1280
1080
980
850
740
600
480
400
360
300
240
190
150
100
	m³/s 0.0 2.0 4.0 6.0 8.0 10.0 12.0

Filter within Envistar Flex

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

IV Produkt Designer

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 and EcoCooler

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

m³/hm³/s

Size	Cooling recovery	Air flow (m³/s)				Dimension (mm)					Control unit location	Weight (kg)	Refrigerant amount (kg)						Effect and fuse
Size	Cooling recovery	Min	SFP_v1,6	Ecodesign	Max	Width	Height	Length	Width duct connection	Height duct connection	Control unit location	Weight (kg)	R454B Circuit 1	R454B Circuit 2	R454B Circuit 3	tonne CO2e (R454B) Circuit 1	tonne CO2e (R454B) Circuit 2	tonne CO2e (R454B) Circuit 3	Cooling effect (kW)	System voltage
100-2V	-	0.22	0.73	0.98	1.01	1070	1090	2580	700	300	On unit roof	620	1.8	-	-	0.84	-	-	15	400VAC
100-2V	Yes	0.22	0.71	0.98	1	1070	1090	3000	700	300	On unit roof	-	1.8	-	-	0.84	-	-	21.6	400VAC
150-2V	-	0.33	1.13	1.41	1.63	1170	1470	2880	800	500	On unit roof	830	2.9	-	-	1.35	-	-	23.7	400VAC
150-2V	Yes	0.33	1.08	1.37	1.63	1170	1470	3300	800	500	On unit roof	-	2.9	-	-	1.35	-	-	32.3	400VAC
190-2V	-	0.42	1.6	1.93	2.09	1450	1470	2880	1000	500	On unit roof	950	3.7	-	-	1.72	-	-	30.6	400VAC
190-2V	Yes	0.42	1.54	1.9	2.09	1450	1470	3300	1000	500	On unit roof	-	3.7	-	-	1.72	-	-	44.2	400VAC
240-2V	-	0.49	1.91	2.26	2.44	1450	1686	3020	1000	600	On unit end	1100	4.1	-	-	1.91	-	-	32.1	400VAC
240-2V	Yes	0.49	1.72	2.2	2.44	1450	1686	3440	1000	600	On unit end	-	4.1	-	-	1.91	-	-	45.7	400VAC
300-2V	-	0.57	2.35	2.86	2.87	1666	1686	3020	1200	600	On unit end	1200	5.1	-	-	2.38	-	-	46.7	400VAC
300-2V	Yes	0.57	2.26	2.82	2.87	1666	1686	3440	1200	600	On unit end	-	5.1	-	-	2.38	-	-	66	400VAC
360-1V	-	0.74	2.6	3.11	3.71	1666	2060	3090	1200	800	On unit end	1550	6	-	-	2.8	-	-	51.1	400VAC
360-1V	Yes	0.74	2.45	3.01	3.71	1666	2060	3510	1200	800	On unit end	-	6	-	-	2.8	-	-	69.6	400VAC
360-2V	-	0.74	2.6	3.11	3.71	1666	2060	3090	1200	800	On unit end	1550	6	-	-	2.8	-	-	55.1	400VAC
360-2V	Yes	0.74	2.45	3.01	3.71	1666	2060	3510	1200	800	On unit end	-	6	-	-	2.8	-	-	74.3	400VAC
400-1V	-	0.8	3.12	3.57	4	1930	1900	3090	1400	700	On unit end	1480	7	-	-	3.26	-	-	52.3	400VAC
400-1V	Yes	0.8	3	3.48	4	1930	1900	3510	1400	700	On unit end	-	7	-	-	3.26	-	-	75.8	400VAC
400-2V	-	0.92	3.12	3.57	4	1930	1900	3090	1400	700	On unit end	1480	7	-	-	3.26	-	-	59.1	400VAC
400-2V	Yes	0.92	3	3.48	4	1930	1900	3510	1400	700	On unit end	-	7	-	-	3.26	-	-	84.1	400VAC
480-0V	-	0.93	3.77	4.4	4.66	2040	2060	3090	1400	800	On unit end	-	8.7	-	-	4.05	-	-	54.9	400VAC
480-0V	Yes	0.93	3.5	4.28	4.66	2040	2060	3510	1400	800	On unit end	-	8.7	-	-	4.05	-	-	80.9	400VAC
480-1V	-	1.07	3.77	4.4	4.66	2040	2060	3090	1400	800	On unit end	1930	8.7	-	-	4.05	-	-	62.7	400VAC
480-1V	Yes	1.07	3.5	4.28	4.66	2040	2060	3510	1400	800	On unit end	-	8.7	-	-	4.05	-	-	90.6	400VAC
480-2V	-	1.07	3.77	4.4	4.66	2040	2060	3090	1400	800	On unit end	1990	8.7	-	-	4.05	-	-	75.7	400VAC
480-2V	Yes	1.07	3.5	4.28	4.66	2040	2060	3510	1400	800	On unit end	-	8.7	-	-	4.05	-	-	106.1	400VAC
600-1V	-	1.16	4.66	5.33	5.78	2250	2270	3090	1600	800	On unit end	2165	8.2	-	-	3.82	-	-	63.1	400VAC
600-1V	Yes	1.16	4.28	5.2	5.78	2250	2270	3510	1600	800	On unit end	-	8.2	-	-	3.82	-	-	94.8	400VAC
600-2V	-	1.16	4.66	5.33	5.78	2050	2270	3090	1600	800	On unit end	2210	8.2	-	-	3.82	-	-	76.7	400VAC
600-2V	Yes	1.16	4.28	5.2	5.78	2250	2270	3510	1600	800	On unit end	-	8.2	-	-	3.82	-	-	111.5	400VAC
600-3V	-	1.16	4.53	5.33	5.78	2050	2270	3090	1600	800	On unit end	2235	6.2	3.6	-	2.89	1.68	-	90.5	400VAC
600-3V	Yes	1.16	4.33	5.2	5.78	2250	2270	3510	1600	800	On unit end	-	6.2	3.6	-	2.89	1.68	-	127.6	400VAC
740-2V	-	1.42	5.94	6.85	7.08	2480	2675	3710	2000	900	In unit next to fan	3265	10.1	-	-	4.71	-	-	81.9	400VAC
740-2V	Yes	1.42	5.45	6.65	7.08	2480	2675	4130	2000	900	In unit next to fan	-	10.1	-	-	4.71	-	-	121.7	400VAC
740-3V	-	1.42	5.94	6.85	7.08	2480	2675	3710	2000	900	In unit next to fan	3325	9.3	4.1	-	4.33	1.91	-	111.6	400VAC
740-3V	Yes	1.42	5.25	6.67	7.08	2480	2675	4130	2000	900	In unit next to fan	-	9.3	4.1	-	4.33	1.91	-	156.8	400VAC
850-1V	-	1.61	7.05	8.06	8.06	2610	2935	3710	2200	1000	In unit next to fan	3660	11.5	-	-	5.36	-	-	85.5	400VAC
850-1V	Yes	1.61	6.75	8.06	8.06	2610	2935	4130	2200	1000	In unit next to fan	-	11.5	-	-	5.36	-	-	130.7	400VAC
850-2V	-	1.61	7.13	8.06	8.06	2610	2935	3710	2200	1000	In unit next to fan	3675	9.3	5.8	-	4.33	2.7	-	101.7	400VAC
850-2V	Yes	1.61	6.55	8.06	8.06	2610	2935	4130	2200	1000	In unit next to fan	-	9.3	5.8	-	4.33	2.7	-	149.5	400VAC
850-3V	-	1.61	7.13	8.06	8.06	2610	2935	3710	2200	1000	In unit next to fan	3815	9.3	5.8	-	4.33	2.7	-	127.3	400VAC
850-3V	Yes	1.61	6.55	8.06	8.06	2610	2935	4130	2200	1000	In unit next to fan	-	9.3	5.8	-	4.33	2.7	-	181.2	400VAC
980-1V	-	1.95	7.82	8.93	9.77	2860	3085	3710	2400	1100	In unit next to fan	3890	14.6	-	-	6.8	-	-	89.9	400VAC
980-1V	Yes	1.95	7.33	8.75	9.77	2860	3085	4130	2400	1100	In unit next to fan	-	14.6	-	-	6.8	-	-	137.1	400VAC
980-2V	-	1.95	7.72	8.93	9.77	2860	3085	3710	2400	1100	In unit next to fan	3890	10.4	7.4	-	4.85	3.45	-	139.7	400VAC
980-2V	Yes	1.95	7.15	8.77	9.77	2860	3085	4130	2400	1100	In unit next to fan	-	10.4	7.4	-	4.85	3.45	-	195.7	400VAC
1080-1V	-	2.02	8.35	9.97	10.14	3000	3195	4310	2400	1100	In unit next to fan	-	11.3	7.1	-	5.27	3.31	-	108	400VAC
1080-1V	Yes	2.02	7.85	9.72	10.14	3000	3195	4290	2400	1100	In unit next to fan	-	11.3	7.1	-	5.27	3.31	-	162.2	400VAC
1080-2V	-	2.02	8.35	9.97	10.14	3000	3195	4310	2400	1100	In unit next to fan	-	11.3	7.1	-	5.27	3.31	-	131.7	400VAC
1080-2V	Yes	2.02	7.85	9.72	10.14	3000	3195	4290	2400	1100	In unit next to fan	-	11.3	7.1	-	5.27	3.31	-	191.5	400VAC
1080-3V	-	2.02	8.35	9.99	10.14	3000	3195	4310	2400	1100	In unit next to fan	-	7.1	5.8	5.8	3.31	2.7	2.7	158.6	400VAC
1080-3V	Yes	2.02	7.83	9.72	10.14	3000	3195	4290	2400	1100	In unit next to fan	-	7.1	5.8	5.8	3.31	2.7	2.7	223.9	400VAC
1280-1V	-	2.28	9.8	11.18	11.46	3180	3375	4310	2600	1200	In unit next to fan	-	12.9	9	-	6.01	4.19	-	119.7	400VAC
1280-1V	Yes	2.28	9	10.93	11.46	3180	3375	4290	2600	1200	In unit next to fan	-	12.9	9	-	6.01	4.19	-	180.7	400VAC
1280-2V	-	2.28	9.8	11.18	11.46	3180	3375	4310	2600	1200	In unit next to fan	-	12.9	9	-	6.01	4.19	-	145.9	400VAC
1280-2V	Yes	2.28	9	10.93	11.46	3180	3375	4290	2600	1200	In unit next to fan	-	12.9	9	-	6.01	4.19	-	213.2	400VAC
1280-3V	-	2.28	9.8	11.2	11.46	3180	3375	4310	2600	1200	In unit next to fan	-	9.5	6.7	6.7	4.43	3.12	3.12	185.8	400VAC
1280-3V	Yes	2.28	8.98	10.93	11.46	3180	3375	4290	2600	1200	In unit next to fan	-	9.5	6.7	6.7	4.43	3.12	3.12	260.6	400VAC

Technical data for related products

Documentation forEnvistar Flex Rotary Heat Exchanger EcoCooler

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 EcoCooler	Brochure	English	1	4/2024
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	00	9/2024
Connection instructions	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	-
EMMT-07 Interior Light Fitting, Technical Data	Product sheet	English	-	2022
BACnet conformance certificate en	Certificates and declarations	English	-	-
Connect safely with IV Produkt Cloud	Certificates and declarations Connection instructions	English	-	-
EPD Environmental Product Declaration – Envistar Flex	Certificates and declarations	English	-	2025
STA-04 Return air control	Control code	English	-	-
STC-01 Outdoor air damper	Control code	English	-	-
STC-02 Exhaust 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

Learn more about Easy Access

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.