VEX240 - exhausto.de

Product information - version 3 

VEX200 series 

Air handling unit 

with rotary heat exchanger 

VEX240: 400-2,350 m3/h 3 

VEX250: 700-3,700 700-3 700 m3/h 3 

VEX260: 1,100-5,600 m3/h 

VEX270-1: 1,300-7,600 m3/h 

VEX270-2: 1,800-9,100 m3/h 

VEX200 

R A N G E 

ROTARY 

HEAT EXCHANGER

Contents 

VEX240 (400-2,350 m 3 /h) ........................4 

- Technical specifications ..............................................................4 

- Capacity curves - bag filters .......................................................5 

- Capacity curves - compact filters ...............................................6 

- Temperature efficiency ..............................................................6 

- Sound data ................................................................................7 

- Data for the water heating coil ..................................................8 

- Data for the motor valve ...........................................................9 

- Dimensional sketches .............................................................10 

- Variant models ........................................................................11 

VEX250 (700-3,700 m 3 /h) ......................12 

- Technical specifications ............................................................12 

- Capacity curves - bag filters .....................................................13 

- Capacity curves - compact filters .............................................14 

- Temperature efficiency ............................................................14 

- Sound data ..............................................................................15 

- Data for the water heating coil ................................................16 

- Data for the motor valve .........................................................17 



VEX260 (1,100-5,600 m 3 /h) ...................20 





- Sound data ..............................................................................23 





VEX270 (700-9,100 m 3 /h) ......................28 





- Sound data ..............................................................................32 





The VEX200 control system..................38 

- Function overview ...................................................................39 

- Commissioning and operation .................................................40 

- Control ...................................................................................41 

- Advanced standard functions ..................................................42 

- Airflow measurement ..............................................................43 

- Technical specifications, modules ............................................44 

- Connection to external units ...................................................45 

- VEX200 for other control systems ...........................................46 

VEX200 General ....................................47 

- Conditions for capacity data ....................................................47 

- Conditions for sound data and calculation ex............................47 

- Water heating coil, principle for connection ............................49 

- Motor valve, calculating values ................................................50 

- Simplified diagrams .................................................................51 

- Cable plans .............................................................................54 

- Outdoor solution .....................................................................57 

- Service and maintenance .........................................................58 

- Disassembling and reassembling the modules / carbon fi lter ....59 

www.exhausto.com 

- Complete electronic documentation 

- EXselect product selection program range 

for professional calculation. 

2 

The VEX200 range 

– a brief introduction 

Cabinet: 

The VEX200 cabinet is made of sheet aluminium-zinc 

AZ185 C4, and insulated with 50mm mineral wool. 

Single and 

modular units: 

The VEX240 and 250 are available as single units where 

the depth without the doors is max. 890 mm. 

The VEX260 and 270-1/270-2 are supplied as units that 

need to be disassembled. The various modules can be moved 

separately through openings of at least 825 mm. 

Connecting to duct system: 

The VEX240 and 250 are supplied with round spigots, 

and the VEX260 and 270 with square connections to the 

duct system, with a proprietary fl ange system. 

External heating coil: 

Heating coils for electricity and water can be purchased as 

accessories to the VEX200 range. Heating coils are delivered 

in an un-insulated housing, the water heating coils are 

supplied with a separate control unit and the electrical 

heating coils are delivered with the control unit mounted. 

The heating coils can also be delivered in an insulated 

housing with control unit mounted and in a version for 

outdoor mounting.

Airflow from 400 to 9,100 m 3 /h with 

the VEX200 range 

Fan housing: 

The fans are hung on rails that make it easy to pull out and 

service individually. The design of the suspension system in 

which the motor, fan impeller and intake are brought 

together, provides optimum conditions for minimising 

vibrations. 

EXstream performance: 

The entire VEX200 range is supplied with EXHAUSTO’s newly 

developed EXstream impeller, which due to its high effi ciency 

and low sound levels, places the units among the best on the 

market. Add the use of EFF1 classifi ed motors, and you 

get high performance with low SFP fi gures. 

3 

Outdoor solutions: 

The VEX200 range can be supplied with a roof for fi tting 

outside. The roof is split up into sections, giving easy access to 

the connection box. 

Integrated control: 

In the VEX200 range the control system forms an integral part 

of the unit, placed just above the motor. All connections are at 

the front in the integrated connection box, so that no space is 

used above the unit. Cables and measurement sockets are 

located on the side of the connection box. 

Rotary heat exchanger: 

A rotary heat exchanger in aluminium, with low pressure loss 

and a temperature effi ciency of 80%. The rotor control 

comprises a gear motor with frequency converter. 

Bag and compact fi lters: 

The VEX200 range is supplied with 

a choice of compact or bag fi lters. 

Supplied with F5 or F7 fi lters. 

Base: 

The VEX240 and 250 are supplied 

as standard with feet. It is also 

possible to order a base with 

adjustable feet as extra. 

The VEX260 and 270 are modular 

units and supplied with an integrated 

base with adjustable feet.

VEX240 

Technical specifi cations - VEX240 (400-2,350 m 3 /h) 

Unit data 

Power consumption 1.6 kW 

Max. phase current 11.6 A (Power consumption is not sine shaped) 

Electricity supply 1 x 230 V + NE 50 Hz 

Principal dimensions excluding spigot, cable connections and base 

(if any). Integrated connection box for control system components 

4 

Height = 1,050 mm, Length = 1,490 mm, Depth = 860 mm 

Height = 65 mm (see dimensional sketch) 

Cabinet material Aluminium zinc, AZ185, Environmental class C4 

Insulation 50 mm mineral wool 

Duct connection Ø315 mm 

Service doors (can be removed) 2 side-hung doors 

Filters 

Bag filters 

1 F5 (EU5), á 3.9 m 

(outdoor air and extraction) Bag filters 

Compact filters 


2 , 465 x 755 - 10 x 380 mm 

1 F7 (EU7), á 4.9 m2 , 465 x 755 - 13 x 380 mm 

1 F5 (EU5), á 7.9 m2 , 500 x 755 x 96 mm 

1 F7 (EU7), á 12.8 m2 , 500 x 755 x 96 mm 

Weight: ready to operate unit 

260 kg 

Weight: unit prior to fitting 

200 kg (excluding doors and fan unit) 

Filter control, built into the connection box 

(Does not apply to units using other control systems) 

2 

Condensation rotor in sea-water proof aluminium 

Fan data 

Corrugation height 1.6mm 

Fan type EXstream, freely revolving B-impeller 

Vibration suppression Fan suspended in vibration dampers 

Motor data (per motor) With integrated control For other control systems 

Electrical supply (delta/star) 3 x 230 V / 400 V 3 x 230 V / 400 V 

Full load current (delta/star) 3 x 2.6 A / 1.5 A 3 x 2.6 A / 1.5 A 

Power consumption 0.55 kW 0.55 kW 

CEMEP class As EFF1 As EFF1 

Frequency converter data With integrated control For other control systems 

Electrical input 

Electrical output 

1 x 230 V 

3 x 230 V 

No frequency converter 

Current overload protection Built-in 

Control (Does not apply to units using other control systems) Variable via frequency control 

Rotor drive - frequency controlled gear motor 

Electrical input 230 V 

Phase current 0.3 A 

Power consumption 40 W 


Speed control (with built-in rotation control) Variable from 0.2 to 10 revolutions of the rotor 

Accessories 

VEX and heating coil for outdoor fitting Special roof and jointing of unit 

Water heating coil at toutside = -20°C , Full heat recovery, volume 

flow ratio = 1.0 and supply air temperature 20°C (Control system 

valve components are not supplied for other control systems) 

Post-heating coil (electricity) 

(Control not supplied for other control systems) 

None 

5.06 kW at 556 l/s (2000 m 3 /h) and 

tF / tR = 60 / 37°C 

(Weight: 11kg) 

6 kW, 1 step, modulating 

(Weight: 7 kg) 

Mounting base for the VEX240 Adjustable height 105-135 mm incl. feet 

Trim damper and cleaning sector For reduction of leakage air 

Carbon filter For odour removal, if any, in the supply air

Capacity curves - with bag filters 

VEX240-FC - with integrated control 

bag fi lters 

Capacity curve with F5 filters 

SFP curve 

Operation curves 

A = Pressure loss addition with F7 filter 

B = Pressure loss addition via external heating coil 

C = Pressure loss addition via cooling units 

D = Pressure loss addition via carbon filter 

= Area where operation of cooling unit is possible 

Conditions for capacity measurements are given on page 47. 

To calculate capacity data, we refer you to our product 

selection program at www.exhausto.com. 

5 

VEX240-X - for other control systems 

bag fi lters 

Total energy consumption is divided equally between the 

exhaust and supply air fans. 

Capacity curves are measured at the following max. frequency: 

VEX240-FC: 50 Hz - VEX240-X: 50 Hz 

If a VEX240 for other control systems is fitted with a 

frequency converter, the motor can cope with a load of up to 

50 Hz, and the capacity curve above can be used. 

VEX240


Capacity curves - with compact filters 

VEX240-FC - with integrated control 

compact fi lters 


SFP curve 







Temperature effi ciency 

The temperature efficiency of the VEX unit at 

different volume flow ratios is shown here, 

calculated as: 

Supply air 

= 0.8 and 1.0 

Extract air 

6 

VEX240-X - for other control systems 






VEX240-FC: 50 Hz - VEX240-X: 50 Hz 

If a VEX240 for other control systems is fitted with a frequency 

converter, the motor can cope with a load of up to 50 Hz, 

and the capacity curve above can be used. 

� 

t = t2.2 - t2.1 = Temperature efficiency 

t1.1 - t2.1 t2.1 = Temperature of outdoor air 

t2.2 = Temperature of supply air 

t1.1 = Temperature of extract air 

Extract air = 25°C 

Outdoor air = 5°C 

Temperature efficiency is given for dry heat 

recovery and is increased by condensation.

Sound data 

VEX240 L WA1 - Suction side VEX240 L WA2 - Pressure side 

Suction side (outdoor/extract air): 

LW1 = LWA1 + KW LWA1 read 

L W1 

L W3 

Surroundings: 


LpA3 = LWA1 +KpA KW (dB) KWA KpA Areas 63 125 250 500 1K 2K 4K 8K dB(A) dB(A) 

I 10 8 -2 2 -15 -16 -21 -35 

II 8 6 6 -5 -18 -20 -25 -35 

III 12 11 5 -5 -20 -27 -26 -27 

I 8 2 -11 -15 -19 -24 -29 -31 -11 -26 

II 9 2 -7 -14 -18 -19 -23 -23 -8 -24 

III 19 7 -8 -14 -22 -24 -24 -15 -5 -21 

LW2 

LW1 

1,2,A 

2,1,A 

1,1,A 

2,2,A 

Conditions for sound measurements are given on page 47. 

LW1 

LW2 

1 m 

2,1,A 

7 

Pressure side (supply/exhaust air): 


Areas 63 125 250 

KW (dB) 

500 1K 2K 4K 8K 

I -1 -6 -8 -3 -5 -6 -11 -20 

L W2 II 1 -7 3 -9 -6 -8 -12 -16 

III 6 3 0 -8 -5 -11 -8 -15 

Sound reduction through 

water heating coil and carbon filter 

LpA3 Insert silencer 

(dB) 

Component 63 125 250 500 1K 2K 4K 8K 

1,2,A 

Water heating 

coil 1 0 0 1 3 3 2 2 

Carbon filter 6 8 4 10 14 16 16 16 



Technical data for water heating coil - optional 

Technical specifi cations 

Test pressure 3,000 kPa 

Max. operating pressure 1,600 kPa 

Number of rows of pipes 1 

Number of circuits 2 

Face area (HxW) 0.350 x 0.350 m 

Pipe connection DN15 (1/2’’) 

Fin distance 1.6 mm 

Weight (without fl uid) 11 kg 

Water content 0.7 l 

Outside temperature -12°C 


Pressure loss in and across water heating coil 

Air side 

Water side 

8 

Capacity diagrams for water heating coil 

Conditions 

Water supply temperature t F 

Water return temperature t R 

Precision of reading and calculated results ± 10% 

Extract air temperature 22°C 

Volume flow ratio 1,0 

Heat recovery 100% 

NB 

For frost protection using glycol, the output values in 

the diagram below must be reduced by 15-20%. 

1 l/s = 3,6m 3 /h

Precalculated values for the motor valve 

Selection of Kvs value 

The kvs values shown in the chart are preselected on the 

following basis: 

• Two defi ned outside temperatures 

• Defi ned water supply temperature 

• Temperature of the extract/supply air 22/20°C 

• Airfl ow of 2,000 m3/h If your own data deviate from the preselected values in 

the chart, the Kvs value has to be calculated manually 

using the model provided on page 50. 

VEX240 (2,000 m3/h) Outside 

temperature 

Water supply Water return Water flow p HCW Kvs p Kvs Pipe connection 

[°C] [°C] [°C] [l/h] [kPa] [kPa] 

-12 80 31 72 0,3 0,25 8 

-12 70 32 80 0,4 0,25 9,5 

-12 55 33 150 1,2 0,63 7 

-12 55 33 150 1,2 0,40 15 

-20 80 35 108 0,5 0,40 9 

-20 80 35 108 0,5 0,25 20 

-20 70 36 140 0,8 0,63 6 

-20 70 36 140 0,8 0,40 14 

-20 55 33 252 2,7 1,00 7 

-20 55 33 252 2,7 0,63 18 

p Kvs: Must be selected in the interval 5-20 kPa 

9 

DN10 (3/8‘‘) 



Dimensional sketches - VEX240 

VEX240 - Fan position 1 

Unit dimensions in mm 

1 

1 

Water heating coil Electrical heating coil 

2 

2 

10 

VEX240 - Fan position 2 

Post heating coil - both electricity and water - measured in mm 

Carbon fi lter - measured in mm 

1 

1 

All measurements are exclusive feet (12 mm) 

and base (adjustable from 105-135 mm) 

2 

2 

1) Allow a service distance equal to the 

depth of the unit in front of the unit 

2) Allow min. 200 mm free height for service

Variant models - VEX240 

VEX with compact fi lter 

VEX with bag fi lter 

NB When using bag fi lters, spigot location B is not an option. 

1.1 Extract air 1.2. Exhaust air 2.1 Outdoor air 2.2 Supply air 

11 


VEX250 

Technical specifi cations - VEX250 (700-3,700 m 3/h) 

Unit data 


Max. phase current 8.5 A (Power consumption is assimilated from 2 phases and is not sine shaped) 




12 

Height = 1,100 mm, Length = 1,600 mm, Depth = 940 mm 

Height = 65 mm (see dimensional sketches) 



Duct connection ø400 mm 

Service doors (can be removed) 2 side-hung doors 

Filters 

(outdoor air and extraction) 

Bag filters 

Bag filters 



1 F5 (EU5), x 4.84 m 2 , 490 x 835 - 13 x 380 mm 

1 F7 (EU7), x 5.96 m 2 , 490 x 835 - 16 x 380 mm 

1 F5 (EU5), x 9.11 m 2 , 520 x 835 x 96 mm 

1 F7 (EU7), x 14.57 m 2 , 520 x 835 x 96 mm 

Weight: ready to operate unit 

272.5 kg 

Weight: unit prior to fitting 

194.5 kg (excluding doors and fan unit) 



2 


Fan data 

Corrugation height 1.6mm 







CEMEP class EFF1 EFF1 




1 x 230 V 

3 x 230 V 


Current overload protection 

Control (Does not apply to units using other control systems) 

Built-in 

Variable via frequency control 

None 







Accessories 


Water heating coil at toutside = -20°C , Full heat recovery, volume 10.79 kW at 833 l/s (3000 m 



3 /h) and 

tF / tR = 60 / 38°C 

(Weight: 15.5 kg) 





Mounting base for the VEX250 Adjustable height 105-135 mm incl. feet 




VEX250-FC - with integrated control 

bag fi lters 


SFP curve 










13 

VEX250-X - for other control systems 

bag fi lters 




VEX250-FC: 50 Hz - VEX250-X: 50 Hz 

If a VEX250 for other control systems is fitted with a frequency 

converter, the motor can cope with a load of up to 50 Hz, and 

the capacity curve above can be used. 

VEX250

VEX250 





SFP curve 











Supply air 

= 0.8 and 1.0 

Extract air 

14 







VEX250-FC: 50 Hz - VEX250-X: 50 Hz 


converter, the motor can cope with a load of up to 50 Hz, 

and the capacity curve above can be used. 

� 









Sound data 

VEX250 L WA1 - Suction side VEX250 L WA2 - Pressure side 



Surroundings: 



I 9 0 -4 3 -13 -17 -24 -39 

LW1 II 5 2 4 -1 -12 -18 -25 -37 

III 8 7 7 -1 -13 -21 -28 -27 

I 2 -6 -15 -19 -23 -28 -33 -37 -16 -32 

L W3 II 1 -4 -11 -17 -20 -25 -27 -26 -13 -29 

LW2 

LW1 

III 5 2 0 -9 -15 -15 -16 -14 -4 -20 

1,2,A 

2,1,A 

1,1,A 

2,2,A 


LW1 

LW2 

1 m 

2,1,A 

15 



K W 

(dB) 

Areas 63 125 250 500 1K 2K 4K 8K 

I -2 -10 -12 0 -6 -9 -16 -26 

LW2 II -4 -9 0 -5 -4 -9 -15 -26 

III 1 -3 2 -4 -4 -9 -19 -11 




(dB) 


1,2,A 

Water heating 

coil 1 1 1 1 3 2 2 1 

Carbon filter 6 8 4 10 14 16 16 16 

VEX250

VEX250 










Weight (without fl uid) 15.5 kg 







16 


Conditions 







NB 



1 l/s = 3,6 m 3 /h











VEX250 (3,000 m3/h) Outside 

temperature 


[°C] [°C] [°C] [l/h] [kPa] [kPa] 

-12 80 31 108 0,3 0,40 9 

-12 80 31 108 0,3 0,25 20 

-12 70 31 144 0,4 0,63 6,5 

-12 70 31 144 0,4 0,40 14 

-12 55 32 252 1,0 1,00 7 

-12 55 32 252 1,0 0,63 18 

-20 80 34 180 0,5 0,63 8,5 

-20 70 34 216 0,7 0,63 10,5 

-20 55 35 360 2,0 1,60 5 

-20 55 35 360 2,0 1,60 14 


17 

DN10 (3/8‘‘) 

VEX250

VEX250 

Dimensional sketches - VEX250 

VEX250 - Fan position 1 


1 

1 

2 

18 


Post heating coil - both electricity and water - measured in mm 



2 

1 

1 

All measurements are exclusive feet (12 mm) 

and base (adjustable from 105-135 mm) 

2 

2 



2) Allow min. 200 mm free height for service

Variant models - VEX250 





19 

VEX250

VEX260 

Technical specifi cations - VEX260 (1,100-5,600 m 3/h) 

Unit data 


Max. phase current 16.0A (Power consumption is assimilated from 2 phases and is not sine shaped) 




20 

Height = 1,570 mm, Length = 1,820 mm, Depth = 1,265 mm 




Duct connection 400 x 800 mm 

Service doors (can be removed) 2 side-hung doors, 1 removable door 

Filters 


Bag filters (F5) 




Compact filters (F5) 

Compact filters (F7) 

1 F5 (EU5), x 2.5 m 2 , 490 x 592 - 5 x 380 mm 

1 F5 (EU5), x 3.0 m 2 , 592 x 592 - 6 x 380 mm 

1 F7 (EU7), x 4.0 m 2 , 490 x 592 - 8 x 380 mm 

1 F7 (EU7), x 5.0 m 2 , 592 x 592 - 10 x 380 mm 

3 F5 (EU5), x 5.2 m 2 , 650 x 380 x 96 mm 

3 F7 (EU7), x 8.4 m 2 , 650 x 380 x 96 mm 

Weight: ready to operate unit (3 sections) 

525 kg (2 x 166,5 kg, 1 x 137 kg) 

Weight: unit prior to fitting (excluding doors, fan units and base) Fan units: 117 kg each, Rotor section: 127,5 kg 



2 


Fan data 

Corrugation height 1.6 mm 







CEMEP class EFF1 EFF1 




1 x 230 V 

3 x 230 V 


Current overload protection 

Control (Does not apply to units using other control systems) 


Built-in 

Variable via frequency control 

None 





Speed control (with built-in rotation control) 

Accessories 

Variable from 0.2 to 10 revolutions of the rotor 


Water heating coil at toutside = -20°C , Full heat recovery, volume 13.08 kW at 1389 l/s (5000 m 



3 /h) and 

tF / tR = 60 / 37°C 

(Weight: 9.2 kg) 


14kW, 1 step, modulating 







bag fi lters 


SFP curve 










21 


bag fi lters 


exhast and supply air fans. 


VEX260-FC: 52.5 Hz - VEX260-X: 50 Hz 


converter, the motor can cope with a load of up to 52.5 Hz, and 


VEX260

VEX260 





SFP curve 











Supply air 

= 0.8 and 1.0 

Extract air 

22 







VEX260-FC: 52.5 Hz - VEX260-X: 50 Hz 


converter, the motor can cope with a load of up to 52.5 Hz, and 


� 









Sound data - VEX260 

VEX260 L WA1 - Suction side VEX260 L WA2 - Pressure side 



Surroundings: 



I 5 6 -3 0 -7 -9 -14 -24 

LW1 II 3 2 4 -2 -7 -11 -18 -28 

III 6 10 2 -2 -10 -16 -22 -23 

I 18 10 -7 -12 -11 -16 -24 -28 -3 -20 

L W3 II 15 7 -2 -9 -10 -14 -21 -20 -3 -20 

LW2 

LW1 

III 20 18 7 1 -1 -4 -8 -6 8 -9 

1,2,A 

2,1,A 

1,1,A 

2,2,A 


LW1 

LW2 

1 m 

2,1,A 

23 



K W 

(dB) 

Areas 63 125 250 500 1K 2K 4K 8K 

I -8 -13 -12 -6 -3 -8 -12 -18 

LW2 II -9 -15 -3 -5 -3 -9 -12 -19 

III -4 -1 -5 -3 -3 -10 -19 -17 




(dB) 


1,2,A 

Water heating 

coil 1 1 1 1 0 1 1 1 

Carbon filter 6 8 4 10 14 16 16 16 

VEX260

VEX260 










Weight (without fl uid) 9.2 kg 







24 


Conditions 







NB 



1 l/s = 3,6 m 3 /h












temperature 


[°C] [°C] [°C] [l/h] [kPa] [kPa] 

-12 80 30 180 0,3 0,63 8,5 

-12 70 31 225 0,5 0,63 11 

-12 55 33 396 1,3 1,60 6 

-12 55 33 396 1,3 1,00 14 

-20 80 34 245 0,5 1,00 7 

-20 80 34 245 0,5 0,63 18 

25 

DN10 (3/8‘‘) 

-20 70 36 324 1,0 1,00 11 

-20 55 38 684 3,4 2,50 7 DN15 (1/2‘‘) 

-20 55 38 684 3,4 1,60 15 DN10 (3/8‘‘) 


VEX260

VEX260 




1 

1 

2 

26 


Post-heating coil - both electricity and water - measured in mm 



2 

1 

1 

2 

2 



2) Allow min. 200 mm free height for service 

* From the factory, the height of the base is set to 

200 mm. It can, however, be adjusted in the 

range 150–240 mm.





1.1 Extract air 1.2 Exhaust air 2.1 Outdoor air 2.2 Supply air 

27 

VEX260

VEX270 

Technical specifi cations - VEX270 (1,300-9,100 m 3/h) 

Unit data VEX270-1 VEX270-2 


Max. phase current 19.0 A (Power consumption is assimilated from 2 

phases and is not sine shaped) 

19.3 A 

Electricity supply 3 x 400 V + NE 50 Hz 3 x 400 V + NE 50 Hz 

Principal dimensions excluding spigot, cable connections and base (if any). 

Integrated connection box for control system components 

28 

Height = 1,800 mm, Length = 2,050 mm, Depth = 1,525 mm 




Duct connection 500 x 1000 mm 

Service doors (can be removed) 2 side-hung doors, 1 removable door 

Filters 


Bag filters 

Bag filters 



3 F5 (EU5), x 4.3 m 2 , 743 x 470 - 5 x 535 mm 

3 F7 (EU7), x 6.6 m 2 , 743 x 470 - 8 x 535 mm 

3 F5 (EU5), x 7.9 m 2 , 800 x 469 x 96 mm 

3 F7 (EU7), x 12.8 m 2 , 800 x 469 x 96 mm 

Weight: ready to operate unit (3 sections) 

VEX270-1: 734 kg (2 x 240 kg, 1 x 187 kg) 

Weight: unit prior to fitting (excluding doors, fan units and base) VEX270-2: 750 kg (2 x 248 kg, 1 x 187 kg) 

Fan units: 170.5 kg each, Rotor section: 187 kg 



2 

Condensation rotor in sea-water proof aluminium Corrugation height 1.6mm 

Fan data 



Motor data (per motor) VEX270-1 

With integrated control 

VEX270-2 

With integrated control 

VEX270-2 

For other control systems 

Electrical supply (delta/star) 3 x 230 V / 400 V 3 x 230 V / 400 V 3 x 230 V / 400 V 

Full load current (delta/star) 3 x 10.2 A / 5.8 A 3 x 13.1 A / 7.6 A 3 x 13.1 A / 7.6 A 

Power consumption 3.0 kW 4.0 kW 4.0 kW 

CEMEP class EFF1 EFF1 EFF1 

Frequency converter data 

Electrical input 1 x 230 V 3 x 400 V No frequency converter 

Electrical output 3 x 230 V 3 x 400 V 

Current overload protection Built-in Built-in None 

Control (Does not apply to units 

using other control systems) 

Variable via frequency control Variable via frequency control 







Accessories 


Water heating coil at toutside = -20°C , Full heat recovery, volume flow 

ratio = 1.0 and supply air temperature 20°C (Control system valve components 

are not supplied for other control systems) 

Post heating coil (electricity) 


16.34 kW at 1667 l/s (6000 m 3 /h) and tF / tR = 60 / 32°C 

19.86 kW at 2028 l/s (7300 m 3 /h) and tF / tR = 60 / 35°C 







VEX270-1-FC with integrated control 

Bag fi lters 


Bag fi lters 

29 


SFP curve 










Total energy consumption is divided equally 

between the exhaust and supply air fans. 


VEX270-1-FC: 41,5 Hz 

VEX270-2-FC: 49 Hz 

VEX270-2-X: 50 Hz 

If a VEX270-2 for other control systems is fitted with a frequency 


the capacity curve for VEX270-2-FC can be used. 

VEX270-2-X for other control systems 

Bag fi lters 

VEX270

VEX270 



Compact fi lters 


Compact fi lters 

30 


SFP curve 










Total energy consumption is divided equally 

between the exhaust and supply air fans. 


VEX270-1-FC: 41,5 Hz 

VEX270-2-FC: 49 Hz 

VEX270-2-X: 50 Hz 

If a VEX270-2 for other control systems is fitted with a frequency 


the capacity curve for VEX270-2-FC can be used. 

VEX270-2-X for other control systems 

Compact fi lters





Supply air 

= 0.8 and 1.0 

Extract air 

31 

� 








recovery and is increased by condensation. 

VEX270

VEX270 

Sound data - VEX270-1 

VEX270-1 L WA1 - Suction side VEX270-1 L WA2 - Pressure side 



Surroundings: 



I 6 2 0 1 -8 -14 -20 -27 

L W1 II 4 1 6 -4 -8 -15 -22 -32 

III 6 8 2 -1 -10 -19 -27 -25 

I 14 16 -7 -9 -11 -17 -23 -27 -1 -18 

L W3 II 17 9 0 -8 -9 -14 -19 -21 -2 -19 

LW2 

LW1 

III 23 19 3 1 0 -5 -10 -11 8 -9 

1,2,A 

2,1,A 

1,1,A 

2,2,A 


LW1 

LW2 

1 m 

2,1,A 

32 



K W 

(dB) 

Areas 63 125 250 500 1K 2K 4K 8K 

I -9 -10 -9 -3 -3 -10 -14 -20 

L W2 II -9 -13 -2 -3 -3 -10 -11 -20 

III -8 1 -7 -1 -6 -15 -21 -9 




(dB) 


1,2,A 

Water heating 

coil 1 1 1 1 0 1 1 1 

Carbon filter 6 8 4 10 14 16 16 16

Sound data - VEX270-2 

VEX270-2 L WA1 - Suction side VEX270-2 L WA2 - Pressure side 



L W1 

Surroundings: 



I 

5 1 -1 1 -7 -11 -18 -27 

II 

3 0 5 -3 -8 -15 -23 -33 

III 4 11 2 -1 -9 -20 -28 -25 

I 15 8 -7 -10 -11 -16 -23 -28 -4 -21 

L W3 II 16 7 -4 -9 -10 -17 -23 -25 -4 -21 

LW2 

LW1 

III 21 18 0 -1 -2 -7 -13 -13 6 -11 

1,2,A 

2,1,A 

1,1,A 

2,2,A 


LW1 

LW2 

1 m 

2,1,A 

33 



L W2 

K W 

(dB) 

Areas 63 125 250 500 1K 2K 4K 8K 

I 

-9 -13 -11 -4 -3 -8 -13 -19 

II 

-8 -13 -5 -2 -3 -10 -14 -20 

III -7 1 -6 -1 -3 -13 -22 -13 




(dB) 


1,2,A 

Water heating 

coil 1 1 1 1 0 1 1 1 

Carbon filter 6 8 4 10 14 16 16 16 

VEX270

VEX270 








Pipe connection DN25 (1’’) 


Weight (without fl uid) 15 kg 







34 


Conditions 







NB 



1 l/s = 3,6 m 3 /h







• Temperature of the exract/supply air 22/20°C 

• Airfl ow of 6,000 m3/h and 7,300 m3/h If your own data deviate from the preselected values in 




temperature 


[°C] [°C] [°C] [l/h] [kPa] [kPa] 

-12 80 25 216 0,1 0,63 10,5 

-12 70 27 252 0,2 1,00 7 

-12 70 27 252 0,2 0,63 18 

-12 55 30 468 0,4 1,60 8 

-20 80 28 288 0,2 1,00 9 

-20 70 30 360 0,3 1,60 5 

35 

DN10 (3/8‘‘) 

-20 70 30 360 0,3 1,00 14 

-20 55 34 684 1,3 2,50 7 DN15(1/2‘‘) 

-20 55 34 684 1,3 1,60 15 DN10 (3/8‘‘) 



temperature 


[°C] [°C] [°C] [l/h] [kPa] [kPa] 

-12 80 27 252 0,1 1,00 7 

-12 80 27 252 0,1 0,63 18 

DN10 (3/8‘‘) 

-12 70 29 324 0,2 1,00 11 

-12 55 32 612 0,7 2,50 6 DN15 (1/2‘‘) 

-12 55 32 612 0,7 1,60 13 

-20 80 31 360 0,3 1,60 5 

-20 80 31 360 0,3 1,00 14 

DN10 (3/8‘‘) 

-20 70 33 468 0,4 1,60 8 

-20 55 37 972 1,6 4,00 6 DN20 (3/4‘‘) 

-20 55 37 972 1,6 2,50 13 DN15 (1/2‘‘) 


VEX270

VEX270 




1 

1 

2 

36 


Post-heating coil - both electricity and water - measured in mm 



2 

1 

1 

2 

2 



2) Allow min. 200 mm free height for service 

* From the factory, the height of the base is set to 

200 mm. It can, however, be adjusted in the 

range 150–240 mm.






37 

VEX270

The VEX200 series: Control system 

VEX200 Control system 

Simple p to operate p 

and with an option for advanced control 

Behind the simple user interface, the 

advanced VEX200 control ensures the 

efficient and economic operation of the 

air handling unit. The control can also 

be adjusted to the daily rhythms of the 

location, whether it is a school, office or 

meeting room. 

The key functions are: 

• Simple operation using the DISPLAY and/or TOUCH panel 

• 3 levels of operation of the control ensure that all users can 

operate the unit in the best way 

• 3 operating levels adapt the ventilation to the actual 

requirement: Economy / Stand-by / Comfort 

• Built-in weekly timer with graphic display 

Integrated control 

The connection box is integrally mounted and located 

on the top of the VEX so that it is easy to access and operate. 

The filter controls are placed in the box, and the DISPLAY 

panel is factory-fitted and inside the box on delivery. 

The DISPLAY panel can be positioned as required. 

The motor controls are 

placed in a separate 

compartment, close to 

the fan motors. 

The motor control is 

positioned for ease of 

access for operation 

and service purposes 

38 

• Option for connection to DDC unit or EXHAUSTO iTool via 

LONWORKS ® as standard 

• The TOUCH panel can be set to different functions 

• Many functions are standard, e.g. night-time cooling 

The VEX200 control box, 

24V power supply, and 

the transducers for flow 

measurement (accessory) are 

sited directly above the rotor. 

This ensures fast, simple access 

when servicing the unit. 

The rotor control and 

rotor drive are positioned 

directly beneath the rotor. 

This makes them easy to 

access during service.

VEX200 Control system - list of functions 

The functions of the control system are described in the table below. There are more detailed descriptions of selected functions on the following pages. 

Function / component Description 

Filter sensor Pressure sensors for monitoring the pressure drop across the filters – alarm for a pressure drop 

more than the value set (due to dirt) 

Rotor control, variable Regulates the speed of the rotary heat exchanger, depending on the need for heat recovery, in 

order to maintain the desired supply air temperature. 

39 

● Standard 

❍ Extra 

Temperature sensor 1) In the extract air spigot for measuring/control of the room temperature 

● 

2) In the exhaust air spigot for measuring the temperature of the exhaust air 

● 

3) In the outdoor air spigot for outdoor temperature compensation and night-time cooling 

● 

4) In the supply air spigot for measuring/control of the supply air temperature 

● 

5) To the extract air ducts (external) 

❍ 

6) In a given room to control room temperature (alternative to 1 above) 

❍ 

Overheating protection (of the fan motor) If there is a danger of the motor overheating the unit will shut off – manual reset. ● 

Fire thermostat - 40/50/70°C The unit will be disconnected at temperatures above 40/50/70°C - manual reset of the thermostat 

- located in the supply air or extract air duct. Can be set so that in the event of fire, the unit: 

1) Stops completely, or 

2) Stops supply air but continues forced extract air, or 

3) Continues forced supply air and extract air 

4) Stops extract air, but continues supply air 

Closing damper, outdoor air 

(required with water heating coil) 

The damper is fitted in the outside air duct – it shuts when the unit stops – available with a spring-return 

motor 

Closing damper, extract air The damper is fitted in the extract air duct – it shuts when the unit stops – available with a 

spring-return motor 

Control of supply air temperature The supply air temperature is regulated according to set points with the option for compensation 

from the outdoor air. 

Control of room temperature The room temperature is regulated according to set points with an option for summer 

compensation and setting a maximum room temperature 

Delta T - Control of supply air temperature 

as a function of the room 

temperature 

The supply air temperature can be regulated according to the extract air temperature – with the 

option of compensating if the chosen set point is exceeded. It is also possible to compensate for 

the outdoor temperature 

Night-time cooling The unit can be set to start at night to cool the building ● 

DISPLAY panel Panel for operation at user, technician and specialist level (see previous page) ● 

Weekly timer For setting the required times for changing between operating levels: stop, economy, standby, comfort ● 

TOUCH panel Option for 5 functions (see previous page) ❍ 

LONWORKS ® Communication Bus communication for monitoring and/or control of the unit (connection to DDC) ● 

Cooling control (EON-XCU2) Control signal from the cooling system (EON-XCU2) ❍ 

CO 2 sensor for ”on-demand” control Regulates the airflow according to the measured CO 2 content of the air ❍ 

Humidity sensor for ”on-demand” control Regulates the airflow on the basis of the relative air humidity measured ❍ 

Constant pressure control Possible for both extract and supply air ❍ 

Measurement socket for 

airflow measurement 

Measuring points for pressure, 

temperature and air-flow 

Measuring points for airflow 

Measuring points for pressure and temperature (VENT criteria) 

Airflow control Sensors for measurement and control of constant airflow ❍ 

Alarm relay Change-over relay ● 

HCW - External water heating coil 

Temperature sensors HCW 1) In the supply air spigot for measuring/control of the supply air temperature. 

(Replaces the sensor in the supply air spigot on the VEX200 unit.) 

● 

2) On the return pipe from the water heating coil to keep the heating coil warm and as 

frost protection 

● 

3) For frost protection of external piping linked to the heating coil 

❍ 

Modulating motor valve Valve for variably regulating the flow of water to the heating coil, depending on the heat requirement ● 

Circulation pump control Control of the circulation pump for the water heating coil ● 

HCE - External electric heating coil 

Temperature sensors 1) In the supply air spigot for measuring/control of the supply air temperature. (Replaces the 

sensor in the supply air spigot on the VEX200 unit.) 

Overheating protection - 70/90°C At temperatures of more than 70/90°C the electricity supply to the heating coil is switched off 

– requires automatic reset at 70°C / manual reset at 90°C 

● 

● 

❍ 

❍ 

(●) 

❍ 

● 

● 

● 

● 

● 

● 

● 

The VEX200 series: Control system


VEX200 Control - Commissioning and operation 

The VEX200 control system allows control at 3 levels of 

operation as well as stopping the unit. Changing between the 

different levels can be carried out automatically via the builtin 

timer in the DISPLAY panel, which also contains a weekly 

planner with a graphic program display. 

Operating levels 

Simple operation of the VEX200 using the DISPLAY panel can 

be done at three levels: 

Operating mode Person Operating options using 

the DISPLAY panel 

User mode Users in the room, 

office staff, for 

example. 

Technician mode Responsible for the 

operation of the 

unit. 

Specialist mode EXHAUSTO’s fitters 

and other trained 

personnel 

Setting the airflow and 

temperature, as well 

as reading information 

about the operation of 

the unit (menu 1-3). 

Adjusting the daily operation 

(timer, temperature 

limits, etc.). 

All settings can be read, 

but only the settings 

in the menus marked 

with an asterix can be 

adjusted. 

All settings can be 

adjusted. 

40 

Manual control is via the DISPLAY or TOUCH panel. Alarms 

and information about deviations in operation can be read on 

the DISPLAY panel, which also allows the possibility to see an 

error list of the last 10 alarms, with dates and times. 

Operating level Operating situation Airflow Temperature 

Off (OFF) Stop unit No ventilation No heat control 

Economy (ECO) Night operation Step 1 (low airflow) Large permissible temp. deviation* 

Standby (SBY) Basic ventilation Step 1 (low airflow) Small temp. deviation permitted* 

Comfort (COM) Comfort ventilation Steps 1-10 (large airflow) Precise temperature* 

* permitted temp. deviation can be adjusted 

DISPLAY panel TOUCH panel 

Day TIme 

Indicator 

light 

Operating 

level 

OFF Standby 

Economy Comfort Switch-/button 

The settings that can 

be adjusted are marked 

with an asterix (*) 

De-activation of 

function 

Indicator light 

Activation of 

function 

The TOUCH panel can be set on installation to one of the 

following five functions 

Function Setting Typical 

locations 

Timer function Overrides to Comfort level for a 

preset time. 

Timer function, 

master 

Manual 

function 

Manual 

function, master 

Holiday function. 

Overrides to Comfort level for 

a preset time. Resets other 

panels. 

Manual change of level of 

operation, either for starting or 

stopping the unit (outside the 

timer program) or for temporarily 

changing the level of operation 

until the timer changes. 

As manual function. 

Resets all other panels to zero. 

Stops the unit until the next 

activation of the panel. 

Meeting 

room 

Typically centrally 

located, e.g. 

in a reception 

Lounge with 

24 hour 

ventilation 

Same but with 

requirement for 

corr. function. 

Centrally 

located, e.g., 

in a reception 

The TOUCH panel can be set to the required function at the 

rear of the panel. Up to 8 TOUCH panels can be linked to the 

unit. These only need to have their own address, which is also 

set at the rear of the panel on installation. Use the DISPLAY 

panel to set the time on the timer function.

VEX200 Control system - Regulation 

The VEX200 control system meets all the control requirements 

for maintaining a perfect indoor climate. As standard there 

is an option to control the VEX200 from the DDC unit via 

LONWORKS ® or EXHAUSTO’s iTool Internet server, which gives 

a direct connection to the VEX from your PC. 

Several operating levels – save energy 

The control system features a range of options designed to 

save energy when operating in economy and standby modes 

(see fig. 1). 

Regulation principles 

The control system controls any external heating coils (water or 

electric coils) in sequence with heat recovery and the cooling 

unit (fig. 2). 

The control offers options for regulating the room 

temperature, the supply air temperature or Delta T regulation. 

Fig. 1: Example of temperature set point for 

comfort, standby and economy operation 

T_Comfort 

max. 40 o C 

T_Comfort 

22 o C 

T_Comfort 

min. 10 o C 

(22+1 = 23 o C) 

Cooling 

requirement 

Recovery �T_Comfort 

(+/- 1K) 

(22-1 = 21 o C) 

(22+3 = 25 o C) 

(22-3 = 19 o C) 

�T_Standby 

(+/- 3K) 

Heat 

requirement 

T_Cool Economy 

(e.g. 30 o C) 

T_Heat Economy 

(e.g. 16 o C) 

Comfort Standby Economy 

The control system regulates the damper (heat recovery effect) 

to maintain the required T-comfort of 22°C. With �T-comfort, 

it is set to how close to the 22°C temperature is required, either 

heating (22-1=21°C) or cooling (22+1=23°C). 

Standby operation with low airflow (step 1) gives the option to 

achieve even greater savings by setting to T-standby. 

As shown above, this is achieved with heating 22-3=19°C, and 

with cooling 22+3=25°C when the unit is in standby. 

With economy heating the setting is an absolute temperature, 

such as 16°C for heating and 30°C for cooling. This allows the 

option to lower the temperature during heating and that the 

cooling unit only starts when the temperature rises above 30°C. 

When controlling the cooling unit there is also an option to set 

the max. temperature difference T between the room and the 

supply air temperature. 

41 

Room temperature control 

Room temperature is controlled by means of the builtin 

temperature sensor or an external room sensor. When 

summer compensation is selected (fig. 3), the set point for the 

desired room temperature will increase in line with the outside 

temperature. This avoids an unpleasant cold shock because 

of too great a difference between the indoor and outdoor 

temperature, and also saves energy. 

Supply air regulation 

When regulating the supply air temperature there is an option 

for outdoor compensation (fig. 4). When this is selected the 

set point for the supply air temperature is lowered in summer 

(possibly raised in winter), so the supply air temperature is 

compensated on the basis of the outside temperature. 

Summer and outdoor compensation is controlled by the 

built-in temperature sensor in the outdoor air spigot. 

Delta T regulation 

Delta T regulation controls the supply air temperature on 

the basis of the measured room temperature. The supply air 

temperature is measured by the temperature sensor in the 

supply air spigot; and the extract air temperature is measured 

either by the temperature sensor in the extract air spigot or 

by a sensor placed in the room or the extract air duct. 

When the set point is exceeded the supply air temperature can be 

compensated so that no additional heat energy is added to the 

room. 

It is possible to operate with outside temperature 

compensation as well as supply air regulation 

Fig. 2: Heat, heat recovery and cooling control 



VEX200 Control system - advanced standard functions 

Fig. 3: Regulation of room temperature 

with summer compensation 

Required room temperature = 20°C 

Additional standard functions 

Night-time cooling 

Without any extra equipment, night-time cooling can be selected, 

which functions without any cooling unit being attached. 

In buildings with a large mass (weight) the comfort in summer 

can be improved by cooling the building with outdoor air at 

night. 

Night-time cooling is particulary suitable for offices, 

institutions, etc., where people do not work at night. 

Night-time cooling can only be activated during summer and 

when unit is not in Comfort operating mode. It is possible to 

set a temperature and a time for night-time cooling. 

Frost protection of external water heating coils 

Frost protection of water heating coils is controlled by a 

temperature sensor on the return pipe. If during operation the 

temperature falls under the set temperature, the unit stops. 

When the unit stops a heat retention function starts which 

keeps the water in the return pipe at a set temperature. 

This minimises the risk of frost in the heating coil and the 

unit is ready to start immediately, even when the 

temperatures outside are low. 

There is also a built-in control to run the circulation pump 

during periods when heating is not required. 

Starting the unit 

On starting, the unit always runs for a few minutes with 

exhaust air to warm up the rotary heat exchanger before the 

supply air is started. 

42 

Fig. 4: Regulation of supply air temperature 

with outdoor air compensation 

Required room temperature = 20°C 

Max. supply air temperature = 35°C 

Min. supply air temperature = 10°C 

Run on with external electric heating coil 

With an electric heating coil there is a built-in run on, 

so the fan runs for 3 minutes after the unit stops. 

The heating coil is disconnected during these 3 minutes. 

Outside compensation of airfl ow 

The control system has a built-in function for reducing 

the airflow when the outdoor temperature is falling. 

The temperature is measured in the outdoor air spigot. 

Air reduction 

Air reduction is a function that may be used if you choose not 

to mount post heating coil or if there is not enough effect for 

required post heating. 

The function reduces the supply air flow as a function of the 

supply air temperature in order to maintain the latter. 

Filter control 

Filters sensors are built into the unit. These are locked in the 

connection box and can easily be set during operation. If a filter 

needs to be changed a yellow lamp lights up on the DISPLAY 

and TOUCH panel, and an entry is made on the alarm list.

VEX200 Control system - airflow control 

Airfl ow control 

• Airflow control for maintaining the same airflow 

despite dirty filters, etc. 

The airflow is shown in the DISPLAY panel. 

This function can be fitted in the VEX unit to order. 

Example of control of airfl ow with CO 2 and/or humidity override 

When the automatic control system is 

operative, this function can be used to 

increase the required airflow when the CO 2-/ 

humidity concentration in the room increases. 

Max. 

airflow 

Desired 

airflow 

Airflow 

10 

8 

6 

4 

2 

0 0 

0% 

EON-ZONE EON-ZONE 

1. 2. 

CO 2 

43 

RH 

1000 

50% 

Limit of compensating 

start 

XTP 

EON-PRESSURE 

DISPLAY-panel 

with built-in clock 

2000 

100% 

CO 2 (ppm) 

%RH (%) 

Limit of full compensation 

Example of ZONE control with modulating damper and constant pressure regulation 

• Constant pressure control of 

the flow of extract and/or supply air 

• CO 2 sensor for overriding the fan 

speed. 

• Humidity sensor (RH) for overriding 

the fan speed. 

• ZONE control of local on/off 

damper via, for example manual 

activation, PIR sensor (Passive 

Infrared Reciever) or humidity 

sensor on/off) 

• ZONE control of local modulating 

damper (0-10V control voltage) 

via, for example, CO 2 or humidity 

sensor 

EON 

VEX 200-serien 

Possibility 

LonWorks for DDC 



VEX200 Control system - Technical specifications, modules 

Protection class 

DISPLAY panel IP20 

TOUCH panel IP20 

EON modules 

VEX200 Control system 

IP54 

Time resolution in 

the timer function 

10 min. 

Precision, timer function 1 sec./day 

Timer in TOUCH panel 10-600 min. 

Precision of heat control ± 1K with stationary 

operation 

LON network transceiver 

Relay contact for the 

FTT-10 A 

circulation pump 

ZONE module 

250 V, 2 A 

Control signal, AI/AO 0-10 V 

Control signal for DI Potential free 

Relay contact, DO 

CO2 sensor 

250 V, 8 A (AC1) 

Control signal, AO 0-10 V 

Measurement area 0-2000 ppm 

Precision 

Humidity sensor 

± 20 ppm (at 25°C) 

Control signal, AO 0-10 V 

Measurement area 5-95% RH 

Precision ± 3% RH (30-70% RH) 

PIR sensor 

Perspective, horizontal 90° 

Range 6 m 

Cut-out delay 10 min. 

5 

8 

6 

6 

44 

DISPLAY panel 

EON-DISPLAY - 8 

TOUCH panel 

EON-TOUCH - 6 

5 

8 

66 

EON-TOUCH - 8 

85 

126 

32 

32 

33 

49,2

VEX200 Control system - connection to external units 

Connection to external units 

External units operate via EXHAUSTO Operating Network 

(EON), which is a bus-based network. 

With the start and initial adjustment of the unit the control 

system checks what units are linked to the network. During 

day-to-day operation, the control system monitors all the units 

that are operating and provides information about any errors 

that may occur. 

The units to be linked to the network should be positioned in 

a structured manner, like a daisy chain. 

The signal cable is a 4-wire cable (2x2x0.6mm) where 2 wires 

are used for the electric current (24VDC) and 2 are used for 

communication. 

Service can be carried out quickly without affecting the other 

units in the network, as one module can be removed without 

breaking the connection to the others (the cable is looped 

onto plug terminals). 

For servicing, an extra DISPLAY panel can be linked to the 

VEX. This has to be done in specialist mode and takes over 

the normal operation of the unit. 

Connection to DDC unit 

The VEX200 control system can be connected to LONWORKS ® , 

which is an open communication system with standardised 

communication exchange. 

LONWORKS ® is integrated in the control system, and LON- 

Mark compatibility is assured in the relevant areas. A standard 

network variable is used (SNVT) to transfer all information, 

allowing a connection to most DDC units and other control 

systems. The control system has a built-in communication 

interface to the LON network with a transceiver (FTT-10A). 

The transceiver functions as a transmitter/receiver between 

the control (neuron chip) and the LONWORKS ® network. 

The VEX200 control system can power LONWORKS ® units with 

max. 250 mA. 

EXHAUSTO has tested LON communication in partnership with 

the leading DDC suppliers in Denmark. 

iTool – connection to the ventilation unit via your PC or mobile 

iTool is an Internet server, which connects the ventilation 

unit and the Internet using TCP/IP protocol. This allows you 

to monitor and control the unit from your computer or from 

your mobile phone – via the Internet or a local network. 

Just link up your computer to iTool. The communication from 

your computer will take place over a standard Internet browser 

such as MS EXPLORER 5.5 or higher. You will also need to 

use Adobe Reader 6.0. iTool’s software has been developed 

for MS EXPLORER, but can work with NETSCAPE. 

This means that communication can take place from anywhere, 

and you are not forced to link up from a specific computer 

or with a specialised piece of software. 

45 

NOINOIOIN 

4 

DISPLAY 

Panel 

Up to 20 units 

Max. 50 m cable connection 

GSM (GPRS) 

Internet (TCP/IP) 

4 4 

CO2 - 

sensor 

Pressure 

sensor 

4 

Plug and 

Play 

TOUCH 

Panel 

4 

TOUCH 

Panel 

Max. 8 pcs. 

4 

......... 



VEX200 for other control systems 

Freedom to choose 

As alternatives, all VEX200 units (except the VEX270-1) 

offer a solution with a different control system. This allows 

integrating the VEX200 units with a control system from other 

suppliers. The solution is optimised for simple and effi cient 

integration on site. 

The following table shows which components are included in 

a VEX200 for other control systems. 

The connections are all made at the same place 

To make the fi tting and integration as simple as possible, all 

the connections are collected on a terminal board. The motor 

cables, hoses for volume fl ow measurement and pressure 

loss across the fi lter are led to the terminal board. The rotor 

control is tested and set, and the connections are led to the 

terminal board in the connection box. 

Capacity 

The solution for other control systems is supplied with the 

same highly effi cient fan as the VEX200 units with integrated 

control, though without a frequency converter. 

46 

Included in 

Component 

the solution 

for another 

control 

VEX200 

2 motors / fans ● 

Rotor control, variable ● 

Air hoses ● 

Connection box with electric con- 

● 

nections 

Connection box with air hoses ● 

HCW 

External water heating coil ❍ 

HCE 

External electric heating coil ❍ 

Overheating thermostat for 

Built-in in electric 

electric heating (OH70/OH90) 

heating coil 

❍ 

● Standard 

❍ Extra

Conditions for capacity data 

EXHAUSTO air handling 

units are measured with 

a 1m level duct (VEX270 

however with 2m) for all 

connection spigots. 

The uniform low speed profile 

of the air in the spigot does 

not cause significant system 

pressure loss. This means that 

bends can be used immediately 

after the unit. 

p t is the total available pressure 

on both the extract and 

supply air sides. 

All internal pressure loss in 

the rotary heat exchanger 

and the clean filters (F5) is 

deducted. 

The stated operation curves 

show the characteristic of 

the fan at reduced load. 

Measuring 

position: 

The SFP curves stated show 

the specific fan power in 

J/m 3 air, i.e. the total electricity 

consumption of the 

unit for both fans, including 

all internal pressure loss. 

Conditions for sound data 

LW2 

LW1 

1,2,A 

2,1,A 

EXHAUSTO air handling units 

must be fitted with silencers 

in the duct system in 

accordance with the 

applicable sound regulations 

for both the premises to be 

ventilated and the 

surrounding area. 

In order to meet the 

applicable norms, the duct 

system must be insulated out 

of consideration for sound, 

heat loss and condensation. 

Sound output levels are used 

as the basis for calculating the 

sound pressure level in the 

operational area of the unit, 

and the level of silencing 

required in the duct system 

itself. 

1,2,A 

2,1,A 

Conditions for 

sound data: 

p t = total pressure 

pt = pt2.2 - pt2.1 Temperature = 20°C 

Density = 1.2 kg/m 3 

SFP = Specific fan power 

(J/m 3 ) 

q V = Volume flow (l/s) 

47 

1,1,A 

2,2,A 

P2,1,A P2,2,A 

1,1,A 

2,2,A 

LW1 

LW2 

KW : Correction factor for 

calculating sound 

output in the octave 

band 

KWA : Correction factor for 

calculating A-weighted 

sound output. 

KpA : Correction factor for 

calculating A-weighted 

sound pressure 

P 1 = Power consumption (W) 

P 1 = SFP x q V x 10 -3 

P 1 = SFP (J/m3 ) x q V (l/s) 

1000 

LpA3 

1 m 

1,2,A 

2,1,A 

LW : Sound output level dB 

Reference 1 pW Tolerance + 3dB 

I: Upper operating area 

II: Middle operating area 

III: Lower operating area 

LW1 : Sound output level 

to duct (outdoor/ 

extract air) Measured 

according to ISO 5136 


LW2 : Sound output level 

to duct (supply/ 

exhaust air) Measured 

according to ISO 5136 

L W2 = L WA2 + K W 

L WA2 read 

Example: 

Required external output: 

q V = 900 l/s (3.240 m 3 /h) 

p t = 250 Pa 

Selected solution: 

VEX250 with F7 filters 

External 

pressure output, pt = 250 Pa 

Pressure supplement 

F7 filters, pt = 45 Pa 

Total 

pressure output, p t = 295 Pa 

Read specific fan power 

SFP = 2.300 J/m 3 

Power consumption 

P 1 = 2300 x 900 = 2.070 Watt 

1000 

L W3 : Sound output level 

to surroundings 

Measured according to 

ISO 3744 


LpA3 : Sound pressure level 

dB(A) at a distance 

of 1 metre from the 

edge of VEX (see 

drawing) with 

semispherical sound 

dissipation in free field 

and with insulated 

connections ducts 

L pA3 = L WA1 +K pA 

L WA1 is read 

The VEX200 series: General

The VEX200 series: General 

Sound data – calculation example 

Calculation example: 

Unit: 

VEX250 

Required output 

qv = 900 l/s (3.240 m3/h) and Pt = 250 Pa 

48 

Reading: 

Read LWA1 (suction ducts) and 

LWA2 (pressure ducts) on the curve. 

LWA1: 67.5 in area I 

LWA2: 81 in area I 

Figures for correction factors, see page 15 


Frequency band (Hz) 63 125 250 500 1K 2K 4K 8K 

L WA1 read in area I 67.5 67.5 67.5 67.5 67.5 67.5 67.5 67.5 

Correction factor KW (LW1 ) read in chart 9 0 -4 3 -13 -17 -24 -39 

Sound output level suction side LW1 76.5 67.5 63.5 70.5 54.5 50.5 43.5 28.5 


Frequency band (Hz) 63 125 250 500 1K 2K 4K 8K 

LWA2 read in area I 81 81 81 81 81 81 81 81 

Correction factor KW (LW2 ) read in chart -2 -10 -12 0 -6 -9 -16 -26 

Sound output level pressure side L W2 79 71 69 81 75 72 65 55 

Surroundings (sound output): 

Frequency band (Hz) 63 125 250 500 1K 2K 4K 8K dB(A) 

LWA1 read in area I 67.5 67.5 67.5 67.5 67.5 67.5 67.5 67.5 67.5 

Correction factor KW (LW3) read in chart 2 -6 -15 -19 -23 -28 -33 -37 -16 

Sound output level surroundings LW3 69.5 61.5 52.5 48.5 44.5 39.5 34.5 30.5 51.5 

Surroundings (sound output): 

Weighting dB(A) 

LWA1 read in area I 67,5 

Correction factor KpA (LW3) read in chart -32 

Sound pressure level surroundings LpA3 35.5 

VEX250 L WA1 - Suction side VEX250 L WA2 – Pressure side 

Calculation example 


selection program at www.exhausto.com.

Water heating coil - principle for connection 

The diagrams below are only simplified diagrams. 

The valves and pipes must be dimensioned. 

Mixing loop type 1 

Variable flow in primary circuit (supply) 

and constant flow in secondary circuit (VEX). 

Mixing loop type 2 

Constant flow in primary circuit (supply) 

and constant flow in secondary circuit (VEX). 

II - A 

III - B 

I - AB 

49 

Isolation valve *) 

Line control valve*) 

Non-return valve*) 

Three-way motor valve (MVM) 

Water heating coil (HCW) 

Circulation pump*) 

Pressure difference regulator*) 

Impurity trap*) 

*) Not supplied by EXHAUSTO 



Motor valve – calculating values 

Motor valve MVM - K vs 0.2-4.0 

Valve 

Test pressure 1600 kPa 

Max. differential pressure 100 kPa 

Permissible medium temperature 5... 110°C 

Calculation of K vs value 

For values other than those shown in the table, the pressure 

loss across MVM must be calculated (K vs value). 

Start by calculating the heating requirement P[kW], 

which is used to calculate the volume of water, q w . 

This value is used in the formula for pressure control 

loss, p MVM . 

The K vs value is then found in the diagram below on 

the basis of the calculated water flow q w . (The K vs value 

must be in the interval 5...20 kPa). 

Calculation of heating requirement 

The heating requirement is determined using the following 

formula: 

P[kW] = 

te (air temperature before heating coil) at: 

tout = -12°C means that te = 15.2°C 

tout = -20°C means that te = 13.6°C 

(ηt = 80%, textract air = 22°C) 

(t-te ) (0.34 x qvm3/h) 1000 

The temperature t, must be greater than or equal to the desired 

supply air temperature + the temperature drop in the duct work 

system, if any. 

50 

Motor: 

Permissible ambient temperature -30...50°C 

Ingress protection according to IEC529 IP40 

Open/close time 34 s 

Supply (50/60 Hz, AC/DC): 24 VAC ±20%, 24 VDC ±20% 

Regulation: 0-10VDC 

Calculation of water fl ow 

Calculation of the volume of water flow, q w : 

q w = P[kW] x 1000 

1.163 x (t F - t R ) [l/h] 

Pressure loss control 

Check of pressure loss, p MVM , across motor valve MVM: 

pMVM = 100 x qw [l/h] 2 [kPa] ( 1000 x kvs )

Simplified diagrams 

The VEX200 is supplied with 

components fitted in the unit 

or for fitting in the duct system 

and in the appropriate room. 

The layout drawings show the 

components that can be fitted 

to VEX200 air handling units 

with or without water or 

electrical heating coils. 

The table lists the components 

for the VEX200. The table 

shows whether the 

components are connected 

via the network (EON) and 

whether they are standard 

or extra components which 

need to be ordered 

separately. 

* = 

Silicone tubes for measurement 

are fitted 

** = 

When heating coil is installed 

Standard = 

Accessories = 

Type 

Standard = 

Accessories = 

VEX200 with external 

heating coil - Water (HCW) 

51 

Abbre viation Via EON 

(EXHAUSTO 

Operating 

Network) 

With 

control 

sys tem 

For 

other 

control 

system 

Rotor with rotor control GV1 X 

Filter control, extract PDS Bottom *) 

Filter control, outdoor air PDS Top *) 

Temperature sensor, extract air – spigot 1.1 TE11 

Temperature sensor, exhaust air – spigot 1.2 TE12 

Temperature sensor, outdoor air – spigot 2.1 TE21 

Temperature sensor, supply air – spigot 2.2 TE22 

Temperature sensor, extract air duct (external) TS-DUCT X 

Temperature sensor, room TS-ROOM X 

Temperature sensor, return pipe from water heating coil (HCW) TE-HCW ** 

Temperature sensor, external piping (HCW) TS-MVM X 

Motor valve, water heating coil (HCW) MVM X ** 

Overheating, exhaust motor TSA Bottom 

Overheating, supply air motor TSA Top 

Overheating thermostat 70°C and 90°C TSA70/90 ** ** 

DISPLAY panel DISPLAY X 

Closing damper, extract air LSA 

Closing damper, outdoor air (requirement for water heating coil) LSF 

Airflow control (required with cooling unit) 

AFC Top 

AFC Bottom 

*) 

Fire thermostat 40°C or 50°C and 70°C 

BT40/BT50/BT70 

Electric heating coil (Heating Coil Electric) HCE X 

Humidity sensor RH X 

Water heating coil (Heating Coil Water) HCW X 

TOUCH panel TOUCH X 

CO2 sensor CO2 X 

Pressure sensor for constant pressure control PRESSURE X 

Cooling module XCU X 

Fan placement 1 - Left 



Simplified diagrams 

VEX200 with external post-heating coil 

- Electric (HCE) 

VEX200 without external post-heating coil 

52 


Fan placement 1 - Left

Simplifi ed diagrams 

VEX200 with external post-heating coil - 

Water (HCW) – for other control system 

VEX200 with external post-heating coil - 

Electric (HCE) – for other control system 

VEX200 without post-heating coil – for other control system 

53 






Cable plans 

Cable dimensioning 

All cable and fuse sizes should be understood as minimum 

requirements. The electrician installing the unit is 

responsible for ensuring that all sizes used are compatible 

with current legislation and regulations. 

Installing the leak circuit breakers 

If earth leak circuit breakers are fi tted in the installation, they 

must be of a type that meets the following requirements: 

VEX240 / VEX250 / VEX260 / VEX270-1: 

FI breaker type A in relation to standard IEC 755, 

Amendment 2, which breaks the circuit when they register 

vagrant current with DC content (pulsating DC). 

VEX270-2: 

FI breaker type B in relation to standard IEC 755, 

Amendment 2, which breaks the circuit when they register 

vagrant current with DC content (pulsating DC) and smooth 

vagrant current. 

A current leakage of up to 300mA can be expected. 

VEX200 with external post-heating coil - Water (HCW) 

Size 


(max. phase 

current) (A) 

* Not supplied by EXHAUSTO 

** Can be supplied as accessories 

*** The number depends on the VEX size. 

Max. 

neutral 

current (A) 

54 

Current (V) Fuses F1 (AgL)* 

Cable 

W1*- W2* 

Cable W3* 

VEX240-FC 11,6 1x230+NE 13,0 3G1,5 3G1,5 

VEX250-FC 8,5 14 3x400 +NE 10,0 ****5G1,5 3G1,5 

VEX260-FC 16,0 24,8 3x400 +NE 20,0 ****5G4,0 3G1,5 

VEX270-1-FC 19,0 26,0 3x400+NE 20,0 ****5G4,0 

VEX270-2-FC 19,3 3x400+NE 25,0 5G4,0 

3G1,5 

3G1,5 

**** Dimensioning of the neutral conductor. The current 

assimilated in the two frequency converters is not a pure 

sine wave. The neutral conductor must be dimensioned to 

cope with the load.

Cable plans 

VEX200 with external post heating coil - Electric (HCE) 

Size 




VEX200 without external post-heating coil 

Size 

Output: 

(kW) 


(max. phase current) (A) 

Fans 

Heating 

coil 





(max. phase 

current) (A) 

Total Voltage: (V) F1* 

Max. 

neutral 

current (A) 

55 

Fuses (AgL) Cable* 




cope with the load. 

Current (V) Fuses F1 (AgL)* 

Cable 

W1*- W2* 

VEX240-FC 11,6 1x230V+NE 13,0 3G1,5 

VEX250-FC 8,5 14,0 3x400 +NE 10,0 ****5G1,5 

VEX260-FC 16,0 24,8 3x400 +NE 20,0 ****5G4,0 

VEX270-1-FC 19,0 26,0 3x400+NE 20,0 ****5G4,0 

VEX270-2-FC 19,3 3x400+NE 25,0 5G4,0 

F2** 

Fans 

F3** 

Heating 

coil 

Cable 

W1/W2 

W3 W4 

VEX240-FC 6 11,6 8,7 20,3 3x400+NE 25 13 10 5G4,0 3G1,5 4G1,5 

VEX250-FC 12 8,5 17,3 25,8 3x400+NE 35 10 20 5G4,0 **** 5G1,5 4G2,5 

VEX260-FC 14 16,0 20,2 36,2 3x400+NE 50 20 25 5G10,0 **** 5G2,5 4G4,0 

VEX270-1-FC 21 19,0 30,3 49,3 3x400+NE 63 20 35 5G16,0 5G4,0 4G6,0 

VEX270-2-FC 21 19,3 30,3 49,6 3x400+NE 63 25 35 5G16,0 5G4,0 4G6,0 




cope with the load. 



Cable plans 

Accessories 

56

VEX200 For outdoor assembly 

57 

The VEX200 cabinet is insulated with 50 mm mineral wool, 

and is suitable for outdoor fitting. 

For outdoor fitting the VEX is supplied with a complete roof with 

service hatch which ensures easy access to the control system. 

The roof is designed so that cables can be led under it to the 

left, the right and the back side of the cabinet. 

The motor valves and damper can also be supplied in a model 

for outdoor fitting. 

The VEX200 VEX200 series: Generral 

General


VEX200 Service and maintenance 

Operational reliability requires regular maintenance 

EXHAUSTO’s products are reliable and solid solutions. 

But even the best solutions require ongoing maintenance 

and service to ensure problem-free operation. 

The rotary heat exchanger needs cleaning regularly. 

When cleaning we recommend the use of compressed air. 

58 

We have made the VEX200 range as easy as possible to 

service continuously. Regularly replacing the filters protects 

against dirt on the rotary heat exchanger and fan impeller, 

and prolongs the lifetime of the unit. 

The fan sections are suspended in track systems which make 

pulling them out and servicing them easy. The motor, fan 

impeller and inlet are collected together in the track system. 

This gives extra effective vibration suppression. 

Simply change the filter by pulling out the old and replacing 

it with a new.

Disassembling/reassembling the modules 

VEX260, VEX270-1 and VEX270-2 

VEX260 and 270 units will be delivered mounted, but will 

easily be disassembled in modules, and assembled again on 

the spot. 

Dismount each fan section by loosening 8 bolts. 

Now dismount the hoses (at the brass sockets). 

Loosen the wires (socket-outlets and plugs). 

Carbon fi lter 

The idea behind the installation of a ventilation unit is to 

provide buildings with outdoor air and thereby contribute to 

improved well-being and comfort. 

The EXHAUSTO carbon fi lter solution consists of a housing 

insulated with 50 mm insulation material of the same execution 

as the VEX unit with carbon fi lter of compact execution 

adapted to the individual units. 

Using EXHAUSTO carbon fi lter effectively removes offensive 

odours (not pollutants) as the fi lter material absorbs organic 

vapours/gases and smells, as well as sulphur dioxide, which is 

often prevalent in city environments. 

The life of EXHAUSTO carbon fi lters depends to a great extent 

on the strain placed on the fi lter – but there is an expected 

VEX size Type Outdoor variants Number of cells* 

VEX240 CARBON140/240 CARBON140/240OD 1 

VEX250 CARBON150/250 CARBON150/250OD 1½ 

VEX260 CARBON260 CARBON260OD 2½ 

VEX270 CARBON270 CARBON270OD 4 

* 1 cell = 592 x 592 mm 

59 

You will find a detailed description in the manual supplied 

with the product. 

lifetime of approx. 2-3 years. Whether the fi lter actually needs 

to be replaced depends entirely on the user’s perception of the 

air quality. 

The EXHAUSTO carbon fi lter is especially intented for use in 

the fi eld of residential ventilation where rotary heat exchangers 

are applied. The carbon fi lter may also be used with other 

types of ventilation plants where the outdoor air contains 

undesirable gases/smells to be removed. 

To gain optimum benefi t from the fi lter, the inlet side must be 

protected by a pre-fi lter having a minimum fi lter class of F7 

and should, if possible, be placed before the cooling unit and 

after the heating coils. 

Cooling unit Post-heat Carbon fi lter Cold water coil, if any 

Supply air 


3002636 - 09.2009 - We reserve the right to make changes without notice 

VEX100 - Air handling units with 

cross-fl ow heat exchanger 

As an alternative to the VEX200 range, EXHAUSTO 

offers VEX100. A series of compact, fl exible 

air handling units with cross-fl ow heat 

exchanger and the same optimised 

functionality as VEX200. 

EXHAUSTO A/S 

Odensevej 76 

DK-5550 Langeskov 

Energy-saving 

Low SFP figures = lower 

energy consumption 

Nonvibrating 

A minimum of 

vibrations 

System solutions 

Residential ventilation 

EBV, ventilation of residential buildings 

with or without heat recovery. 

Kitchen ventilation 

EKV, ventilation of 

kitchens and restaurants. 

More air 

EXstream impeller 

- increased air volumes 

EXHAUSTO products are widely used and carefully designed to always 

ensure maximum functionality and to comply with applicable legislation. 

Our solutions make life easier, providing a better flow in: 

Tel. +45 65 66 12 34 

Fax +45 65 66 11 10 

exhausto@exhausto.dk 

www.exhausto-ventilation.com 

User-friendly 

User interface divided 

into levels: User level, 

technician level and 

specialist level 

The VEX100 and VEX200 are equipped with 

a newly developed, laser-welded EXstream 

impeller, which is dynamically balanced to 

provide the optimum airflow. 

dB 

Office ventilation 

Ventilation of offices, shops and other 

buildings and large areas with both 

CAV and VAV systems. 

Low sound 

level 

More economical sound 

reduction 

School ventilation 

ESV, ventilation of schools. For the design 

of both classrooms and staff rooms 

with both CAV and VAV systems.

VEX240 - exhausto.de

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