Vents VKV EC User manual

USER’S MANUAL
VKV EC
VKH EC
Centrifugal roof fan

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VKV EC/VKH EC
www.ventilation-system.com
CONTENTS
This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
The manual contains information about purpose, technical details, operating principle, design, and installation of the VKV EC/VKH EC unit
and all its modifications.
Technical and maintenance staff must have theoretical and practical training in the field of ventilation systems and should be able to
work in accordance with workplace safety rules as well as construction norms and standards applicable in the territory of the country.
Safety requirements ................................................................................................................................................................... 3
Purpose................................................................................................................................................................................................ 5
Delivery set........................................................................................................................................................................................ 5
Designation key.............................................................................................................................................................................. 5
Technical data.................................................................................................................................................................................. 6
Design and operating principle........................................................................................................................................... 7
Mounting and set-up.................................................................................................................................................................. 7
Connection to power mains .................................................................................................................................................. 8
Technical maintenance.............................................................................................................................................................. 10
Troubleshooting............................................................................................................................................................................. 12
Storage and transportation regulations.......................................................................................................................... 12
Manufacturer’s warranty........................................................................................................................................................... 13
Certificate of acceptance.......................................................................................................................................................... 14
Seller information.......................................................................................................................................................................... 14
Installation certificate.................................................................................................................................................................. 14
Warranty card................................................................................................................................................................................... 14

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SAFETY REQUIREMENTS
All user’s manual requirements as well as the provisions of all the applicable local and national
construction, electrical, and technical norms and standards must be observed when installing
and operating the unit.
Disconnect the unit from the power supply prior to any connection, servicing, maintenance, and
repair operations.
Only qualied electricians with a work permit for electrical units up to 1000 V are
allowed for installation. The present user’s manual should be carefully read before
beginning works.
Check the unit for any visible damage of the impeller, the casing, and the grille before starting
installation. The casing internals must be free of any foreign objects that can damage the
impeller blades.
While mounting the unit, avoid compression of the casing! Deformation of the casing may result
in motor jam and excessive noise.
Misuse of the unit and any unauthorised modifications are not allowed.
Transported air must not contain any dust or other solid impurities, sticky substances, or fibrous
materials.
Do not use the unit in a hazardous or explosive environment containing spirits, gasoline,
insecticides, etc.
Do not close or block the intake or extract vents in order to ensure the efficient air flow.
Do not sit on the unit and do not put objects on it.
The information in this user’s manual was correct at the time of the document’s preparation.
The Company reserves the right to modify the technical characteristics, design, or configuration
of its products at any time in order to incorporate the latest technological developments.
Never touch the unit with wet or damp hands.
Never touch the unit when barefoot.

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VKV EC/VKH EC
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This unit is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the unit by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the unit.
Connection to the mains must be made through a disconnecting device, which is integrated
into the fixed wiring system in accordance with the wiring rules for design of electrical units,
and has a contact separation in all poles that allows for full disconnection under overvoltage
category III conditions.
Ensure that the unit is switched off from the supply mains before removing the guard.
Precautions must be taken to avoid the back-flow of gases into the room from the open flue of
gas or other fuel-burning appliances.
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
The fan is connected to the ventilation duct by means of a counter flange, which is attached
directly to the fan base (see «Mounting and set-up»).

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THE UNIT SHOULD NOT BE OPERATED BY CHILDREN OR PERSONS WITH REDUCED
PHYSICAL, MENTAL, OR SENSORY CAPACITIES, OR THOSE WITHOUT THE APPROPRIATE
TRAINING.
THE UNIT MUST BE INSTALLED AND CONNECTED ONLY BY PROPERLY QUALIFIED
PERSONNEL AFTER THE APPROPRIATE BRIEFING.
THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT UNAUTHORISED
ACCESS BY UNATTENDED CHILDREN.
PURPOSE
DELIVERY SET
DESIGNATION KEY
NAME NUMBER
Fan 1 pc.
User’s manual 1 pc.
Packing box 1 pc.
The VKV EC/VKH EC roof fans in metal casing are designed for ventilation systems in industrial premises as well as pools, apartment
buildings, offices, hospitals, restaurants and other premises heated during the winter season.
The fan is mounted on the external exhaust shaft of the air duct and is used only for exhaust ventilation.
Designation example: VKV zEC 310 RT
Centrifugal roof fan
VKV – with vertical air discharge
VKH – with horizontal air discharge
Casing material
z – galvanized steel
_ – polymer-coated steel
A – aluminium
Electric heater type
EC – electronically commutated
Turbine standard size [mm]
Options
RT – integrated pressure differential regulator
RV – integrated constant air flow regulator
S1 – built-in external switch

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VKV EC/VKH EC
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TECHNICAL DATA
The unit is rated as a Class I electrical appliance.
VKV EC
ØD
4xød
6xM
Model Overall and connecting dimensions [mm] Weight
[kg]
Ø D ø d M A H L L1 L2
VKV 190 EC 213 9 M6 417 166 355 245 470 7
VKV 225 EC 213 9 M6 417 210 355 245 470 7
VKV 250 EC 285 11 M6 481 236 425 330 534 11
VKV 280 EC 285 11 M6 547 274 425 330 600 14
VKV 310 EC 285 11 M6 613 296 477 330 666 20
VKV 355 EC 438 11 M8 738 326 598 450 791 23
VKV 400 EC 438 11 M8 738 371 598 450 791 25
VKV 450 EC 438 11 M8 738 425 668 535 791 44
VKV 500 EC 438 11 M8 859 456 668 535 912 52
VKV 560 EC 605 11 M8 859 478 850 750 912 65
VKV 630 EC 605 20 M8 951 530 939 750 1004 83
VKH EC
ØD
4xød
6xM
L1
Model Overall and connecting dimensions [mm] Weight
[kg]
Ø D ø d M H H1 A L L1
VKH 190 EC 213 11 M6 189 195 351 350 245 8
VKH 225 EC 213 11 M6 234 241 351 350 245 8
VKH 250EC 285 11 M6 237 244 451 450 330 13
VKH 280 EC 285 11 M6 263 270 451 450 330 13
VKH 310 EC 285 11 M6 263 270 451 450 330 16
VKH 355 EC 438 11 M8 322 361 625 620 450 27
VKH 400 EC 438 11 M8 384 422 625 620 450 27
VKH 450 EC 438 11 M8 420 459 710 700 535 46
VKH 500 EC 445 11 M8 467 506 710 700 535 51
VKH 560 EC 605 11 M8 489 528 900 895 750 71
VKH 630 EC 600 20 M8 520 560 1000 990 750 101
Parameter
VKV/VKH 190 EC VKV/VKH 225 EC VKV/VKH 250 EC VKV/VKH 280 EC VKV/VKH 310 EC VKV/VKH 355 EC VKV/VKH 400 EC VKV/VKH 450 EC VKV/VKH 500 EC VKV/VKH 560 EC VKV/VKH 630 EC
Unit voltage [V/50 (60) Hz] 1~ 230 1~ 230 1~ 230 1~230 1~230 1~230 1~230 3~400 3~400 3~400 3~400
Power [W] 102 101 161 182 391 669 526 1323 1350 2412 2973
Current [A] 0.77 0.80 1.29 1.34 1.72 9.36 3.90 3.27 2.08 3.83 4.66
Maximum air flow [m³/h] 670 1 290 1 470 2 330 3 100 3 830 5 380 8 110 10 900 13 640 18 270
RPM [min-1] 3520 2400 3300 2610 2600 1550 1450 1560 1480 1540 1450
Sound pressure level at 3 m distance
[dBA] 52 47 54 48 49 51 58 63 67 69 71
Transported air temperature [°C] -25…+60 -25…+60 -25…+60 -20…+60 -20…+60 -25…+50 -25…+50 -20…+60 -25…+50 -25…+60 -25…+55
Motor protection rating IP54 IP54 IP54 IP44 IP54 IP54 IP54 IP54 IP55 IP54 IP54
Product protection rating IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4

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Depending on the model the fan casing is made of polymer coated steel, aluminium or galvanized steel.The units feature electronically
commutated (EC) direct current motors with an external rotor and centrifugal impellers with backward curved blades. EC motor is
free of friction and wear parts such as a commutator and brushes. These components are replaced by a maintenance-free electronic
circuit board.
DESIGN AND OPERATING PRINCIPLE
• Fans are designed for horizontal mounting on a flat roof directly above an air duct or a ventilation shaft.
• In order to avoid ingress of water and snow into the ventilation duct, it is possible to install a fan on the mounting frame.
• The fan is connected to the ventilation duct by means of a counter flange, which is attached directly to the fan base.
• The fan base has holes for fixing bolts that attach the fan to a stationary even surface or to a mounting frame.
• In the VKV 225 EC, VKV/VKH 500 EC, VKV/VKH 630 EC models the counter flange is attached together with the fan inlet ring.
• A mounting frame, a counter flange and mounting bolts are not included in the delivery set and must be purchased separately.
VKH EC
VKV EC
MOUNTING AND SETUP
WHILE INSTALLING THE UNIT ENSURE CONVENIENT ACCESS FOR SUBSEQUENT
MAINTENANCE AND REPAIR.
BEFORE MOUNTING MAKE SURE THE CASING DOES NOT CONTAIN ANY FOREIGN
OBJECTS E.G. FOIL, PAPER.

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VKV EC/VKH EC
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Electrical connection is made on the terminal block located in the remote or integrated terminal box of the electric motor.
The terminal designations are shown on the label inside the fan casing.
ACCESS TO THE TERMINAL BLOCK VKH EC
ACCESS TO THE TERMINAL BLOCK VKV EC
CONNECTION TO POWER MAINS
DISCONNECT THE POWER SUPPLY PRIOR TO ANY OPERATIONS WITH THE UNIT.
CONNECTION OF THE UNIT TO POWER MAINS IS ALLOWED BY A QUALIFIED
ELECTRICIAN WITH A WORK PERMIT FOR THE ELECTRIC UNITS UP TO 1000 V AFTER
CAREFUL READING OF THE PRESENT USER’S MANUAL.
THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE GIVEN ON THE
MANUFACTURER’S LABEL.
• The unit is rated for connection to power mains with the parameters specified in the «Technical specifications» section, according to
the wiring diagram.
• The unit must be connected to power mains using insulated electric conductors (cables, wires). The actual wire cross section selection
must be based on the maximum load current, maximum conductor temperature depending on the wire type, insulation, length and
installation method.
• The external power input must be equipped with an automatic circuit breaker built into the stationary wiring to open the electric
circuit in case of overload or short-circuit. The circuit breaker installation place must provide quick access for emergency shutdown
of the unit. The trip current of the automatic circuit breaker QF must exceed the maximum current consumption of the unit (refer
to the technical data table). The recommended trip current of the circuit breaker is the next current in the standard trip current row
following the maximum current of the connected unit. The automatic circuit breaker is not included in the delivery set.

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Power supply parameters and examples of wiring diagrams depending on the unit model
~230 V
50 (60) Hz
VKV/VKH 190 EC
VKV/VKH 225 EC
VKV/VKH 250 EC
VKV/VKH 280 EC
VKV/VKH 310 EC
VKV/VKH 355 EC
VKV/VKH 400 EC
1
L1
2
L2
3L3
4
1
2
3
4
X1
X2
PE
L3
L2
L1
+1 V
GN
Tacho
+10V
CRT
GND
Tacho
A
QF
1
L1
2
L2
3L3
4
1
2
3
4
X1
X2
ND
Tacho
+10 0V
CRT
GND
Tacho
A
QF
0-10V
~400 V
50 (60) Hz
1
L1
2 L2
3
L3
4
1
X1
X2
PE
L3
L2
L1
+10V+10V
A
QF
1
L1
2 L2
3
L3
4
1
X1
X2
PE
L3
L2
L1
+10V+10V
A
QF
2
3
0-10V
GND
CRT
GND
2
3
0-10V
GND
CRT
GND
~400 V
50 (60) Hz
VKV/VKH 500 EC
VKV/VKH 450 EC VKV/VKH 560 EC
VKV/VKH 630 EC
Model Recommended cable, nxS, where n is the number of wires, and S is the cross section in mm
VKV/VKH 190...400 EC 3 x 1,0
VKV/VKH 450 EC 5 x 0,75
VKV/VKH 500...630 EC 5 x 1,5

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VKV EC/VKH EC
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• The technical maintenance includes periodic cleaning of the surfaces from accumulated dust and dirt.
• When carrying out fan maintenance, it is necessary to partially disassemble it in order to access contaminated parts of the fan.
• The impeller blades require thorough cleaning once in 6 months.
• Use a soft dry cloth, brush or compressed air to remove dust.
• Carry out wet cleaning using warm water and a mild household detergent.
• Protect the electric motor against liquid ingress.
• Do not immerse the unit in water!
• Do not use aggressive solvents, or sharp objects as they may damage the impeller.
VKH EC
VKV 400 EC, VKV 450 EC, VKV 500 EC, VKV 560 EC, VKV/VKH 630 EC
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY MAINTENANCE
OPERATIONS!
MAKE SURE THE UNIT IS DISCONNECTED FROM POWER MAINS BEFORE REMOVING THE
PROTECTION
TECHNICAL MAINTENANCE