Vents VKP User manual

Duct rectangular fan
USER’S MANUAL
VKP/VKPI/VKPF/VKPFI

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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 VKP 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
Mounting and set-up.................................................................................................................................................................. 12
Connection to power mains .................................................................................................................................................. 13
Technical maintenance.............................................................................................................................................................. 17
Troubleshooting............................................................................................................................................................................. 19
Storage and transportation regulations.......................................................................................................................... 19
Manufacturer’s warranty........................................................................................................................................................... 20
Certificate of acceptance.......................................................................................................................................................... 21
Seller information.......................................................................................................................................................................... 21
Installation certificate.................................................................................................................................................................. 21
Warranty card................................................................................................................................................................................... 21
CONTENTS

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VKP/VKPI/VKPF/VKPFI
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 and maintenance. 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.
• Do not expose the device to adverse atmospheric agents (rain, sun, etc.).
• 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.
WARNING! Similar to the use of any other household electrical appliances when operating
this fan, the following basic rules must be followed:
• Never touch the unit with wet or damp hands.
• Never touch the unit when barefoot.
The installation site of the fan must have protective elements that prevent foreign objects from
entering the fan.
When starting, setting up and operating the fan, the exhaust and supply spigots must be protected
to prevent injury from the rotating parts of the fan.

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THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
This appliance 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 appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
The connection to the supply mains must be made through a means of disconnection, which is
incorporated in the fixed wiring in accordance with the wiring rules, and has a contact separation in
all poles that allows for full disconnection under overvoltage category III conditions.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly
qualified persons in order to avoid a safety hazard.
Ensure that the appliance is switched off from the supply mains before removing the guard.
WARNING: If there are any unusual oscillating movements, immediately stop using the appliance
and contact the manufacturer, its service agent or suitably qualified persons.
The replacement of parts of the safety suspension system device shall be performed by the
manufacturer, its service agent or suitably qualified persons.
Fixing means for attachment to the ceiling such as hooks or other devices shall be fixed with a
sufficient strength to withstand 4 times the weight of the appliance.
The mounting of the suspension system shall be performed by the manufacturer, its service agent
or suitably qualified persons.
The appliance is to be installed so that the blades are more than 2.3m above the floor.
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.

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VKP/VKPI/VKPF/VKPFI
DELIVERY SET
DESIGNATION KEY
NAME NUMBER
Fan 1 pc.
User's manual 1 pc.
Packing box 1 pc.
Designation example: VKP 4 E 500x300 ___/___
Series
VKP — standard
VKPI — insulated casing
VKPF — forward curved impeller blades
VKPFI — forward curved impeller blades, insulated casing
Poles
2 – two-pole
4 – four-pole
6 – six-pole
Phases
E – single-phase
D – three-phase
Size of the rectangular duct (WxH) [mm]
Power
Voltage/Frequency [V/Hz]
_ – 220/50 (by default)
(220V/60Hz)
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
The duct rectangular fan is designed for supply and exhaust ventilation of domestic, public and industrial premises with high
requirements to the noise level and with limited space for mounting.
The unit is rated for continuous operation.
The unit is a component part and is not designed for stand-alone operation.
Transported air must not contain any flammable or explosive mixtures, evaporation of chemicals, sticky substances, fibrous materials,
coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust,
pathogenic germs).

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TECHNICAL DATA
The unit is designed for indoor application with the ambient temperature ranging from 0 °C up +45 °C and relative humidity up to 80 %.
The unit is rated as a Class I electrical appliance.
The unit design is constantly being improved, thus some models may be slightly different from those described in this manual.
VKP/VKPI 2E 400200 2E 500250 4E 500300 4D 500300
Voltage [V] 1~ 220-240 1~ 220-240 1~ 220-240 3~ 400
Frequency [Hz] 50 60 50 60 50 60 50 60
Power [W] 138 200 305 380 140 175 136 165
Current [A] 0.60 0.88 1.32 1.65 0.57 0.73 0.34 0.53
Maximum air flow [m3/h] 930 1070 1720 1850 1700 1855 1380 1620
RPM [min-1] 2600 2850 2550 2830 1390 1530 1360 1600
Sound pressure level at 3 m distance
[dBA] 69/61* 71/63* 76/65* 78/67* 53/45* 55/46* 53/45* 55/46*
Transported air temperature [°С] -25...+45 -25...+45 -25...+45 -25...+45 -25...+45 -25...+50 -25...+65 -25...+55
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP44 IP44 IP44 IP44 IP54 IP54 IP54 IP54
VKP/VKPI 4E 600300 4D 600300 4E 600350
Voltage [V] 1~ 220-240 3~ 400 1~ 220-240
Frequency [Hz] 50 60 50 60 50 60
Power [W] 220 310 230 235 470 700
Current [A] 0.9 1.38 0.52 0.53 2.37 3.15
Maximum air flow [m3/h] 2470 2510 2530 2630 2950 3515
RPM [min-1] 1400 1450 1360 1600 1370 1460
Sound pressure level at 3 m distance
[dBA] 55/47* 55/57* 53/46* 53/46* 67/59* 68/59*
Transported air temperature [°С] -25...+45 -25...+45 -25...+70 -25...+65 -40...+80 -40...+55
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP54 IP54 IP54 IP54 IP54 IP54
VKP/VKPI 4D 600350 4D 1000500
Voltage [V] 3~ 400 Δ 3~ 400 Y 3~ 400
Frequency [Hz] 50 60 50 60 50
Power [W] 510 750 380 515 3800
Current [A] 1.41 1.44 0.7 0.93 6.6
Maximum air flow [m3/h] 2970 3410 2660 2730 15000
RPM [min-1] 1415 1610 1235 1220 1360
Sound pressure level at 3 m distance
[dBA] 64/55* 64/55* 63/55* 63/55* 70
Transported air temperature [°С] -40...+60 -40...+60 -40...+80 -40...+40 -25...+40
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP54 IP54 IP54 IP54 IP54
* Parameters for a VKPI model.

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VKP/VKPI/VKPF/VKPFI
VKP VKP 4D 1000x500 VKPI
Model Dimensions [mm] Weight [kg]
BB1 B2 HH1 H2 H3 L
VKP 2E 400х200 400 420 440 200 220 240 240 500 11.25
VKP 2E 500х250 500 520 540 250 270 290 290 640 17.88
VKP 4E 500х300 500 520 540 300 320 340 340 680 19.80
VKP 4D 500х300 500 520 540 300 320 340 340 680 19.80
VKP 4E 600х300 600 620 640 300 320 340 342 680 27.77
VKP 4D 600х300 600 620 640 300 320 340 342 680 27.77
VKP 4E 600х350 600 620 640 350 370 390 390 735 36.38
VKP 4D 600х350 600 620 640 350 370 390 390 735 36.38
Model Dimensions [mm] Weight [kg]
BB1 B2 HH1 H2 H3 L
VKP 4D 1000х500 1000 1020 1040 500 520 540 720 1150 126.0
Model Dimensions [mm] Weight [kg]
BB1 B2 B3 HH1 H2 H3 L
VKPI 2E 400х200 400 420 440 500 200 220 240 360 500 24.5
VKPI 2E 500х250 500 520 540 600 250 270 290 410 640 27.6
VKPI 4E 500х300 500 520 540 600 300 320 340 460 680 37.2
VKPI 4D 500х300 500 520 540 600 300 320 340 460 680 37.2
VKPI 4E 600х300 600 620 640 700 300 320 340 460 680 43.5
VKPI 4D 600х300 600 620 640 700 300 320 340 460 680 43.5
VKPI 4E 600х350 600 620 640 700 350 370 390 530 735 56.2
VKPI 4D 600х350 600 620 640 700 350 370 390 530 735 56.2

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VKPF/VKPFI 4E 400x200 4D 400x200 4E 500x250 4D 500x250 6E 500x250
Unit voltage [V/50 (60) Hz] 1~ 230 3~ 400 1~ 230 3~ 400 1~ 230
Power [W] 295 282 535 570 244
Current [A] 1.32 0.60 2.49 0.94 1.22
Maximum air flow [m3/h] 1440 1470 1750 1850 1460
RPM [min-1] 1350 1300 1250 1270 910
Sound pressure level at 3 m distance [dBA] 50/42* 52/43* 53/44* 54/44* 45/37*
Transported air temperature [°С] -25...+40 -25...+45 -20...+40 -20...+40 -20...+50
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP54 IP54 IP54 IP54 IP54
VKPF/VKPFI 6D500x250 4E500x300 4D500x300 6E500x300 6D500x300
Unit voltage [V/50 (60) Hz] 3~ 400 1~ 230 3~ 400 1~ 230 3~ 400
Power [W] 274 710 855 283 303
Current [A] 0.67 3.10 1.70 1.59 0.8
Maximum air flow [m3/h] 1490 2350 2350 1550 1620
RPM [min-1] 930 1230 1300 890 910
Sound pressure level at 3 m distance [dBA] 45/38* 57/47* 56/47* 47/39* 51/41*
Transported air temperature [°С] -20...+60 -25...+70 -20...+50 -20...+70 -20...+60
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP54 IP54 IP54 IP54 IP54
VKPF/VKPFI 4E600300 4D600300 6E600300 6D600300 4E 600350
Unit voltage [V/50 (60) Hz] 1~ 230 3~ 400 1~ 230 3~ 400 1~ 230
Power [W] 1240 1560 419 397 2840
Current [A] 6.45 2.73 2.05 0.78 13.90
Maximum air flow [m3/h] 2950 3740 2260 2320 4260
RPM [min-1] 1210 1310 870 920 1260
Sound pressure level at 3 m distance [dBA] 59/51* 57/50* 50/42* 49/41* 59/51*
Transported air temperature [°С] -25...+50 -25...+65 -20...+70 -20...+70 -20...+40
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP54 IP54 IP54 IP54 IP54
* Parameters for a VKPFI model.

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VKP/VKPI/VKPF/VKPFI
VKPF/VKPFI 4D 600350 6E600350 6D600350 4D 700400
Unit voltage [V/50 (60) Hz] 3~ 400 1~ 230 3~ 400 3~ 400
Power [W] 2460 720 743 3630
Current [A] 3.93 3.6 1.47 6.00
Maximum air flow [m3/h] 5020 2755 3310 6450
RPM [min-1] 1300 820 940 1320
Sound pressure level at 3 m distance [dBA] 60/52* 51/43* 55/46* 65/56*
Transported air temperature [°С] -20...+40 -20...+60 -20...+70 -25...+40
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP54 IP54 IP54 IP54
VKPF/VKPFI 4D 600350 6E600350 6D600350 4D 700400
Unit voltage [V/50 (60) Hz] 3~ 400 1~ 230 3~ 400 3~ 400
Power [W] 2460 720 743 3630
Current [A] 3.93 3.6 1.47 6.00
Maximum air flow [m3/h] 5020 2755 3310 6450
RPM [min-1] 1300 820 940 1320
Sound pressure level at 3 m distance [dBA] 60/52* 51/43* 55/46* 65/56*
Transported air temperature [°С] -20...+40 -20...+60 -20...+70 -25...+40
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP54 IP54 IP54 IP54
VKPF/VKPFI 6D 700400 4D 800500 6D 800500 8D800500
Unit voltage [V/50 (60) Hz] 3~ 400 3~ 400 3~ 400 3~ 400
Power [W] 1150 5850 2790 1377
Current [A] 2.3 9.35 5.18 3.40
Maximum air flow [m3/h] 4050 8120 7610 5620
RPM [min-1] 890 1140 830 710
Sound pressure level at 3 m distance [dBA] 58/49* 67/61* 59/53* 58/49
Transported air temperature [°С] -20...+70 -25...+40 -20...+50 -20...+40
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP54 IP54 IP54 IP54
VKPF/VKPFI 6D 900500 8D900500 6D 1000500 8D1000500
Unit voltage [V/50 (60) Hz] 3~ 400 3~ 400 3~ 400 3~ 400
Power [W] 3870 2000 3870 2000
Current [A] 7.0 4.1 7.0 4.1
Maximum air flow [m3/h] 9540 7175 9540 7175
RPM [min-1] 930 680 930 680
Sound pressure level at 3 m distance [dBA] 61/55* 59/50* 61/55* 59/51*
Transported air temperature [°С] -20...+55 -20...+40 -20...+55 -20...+40
Ingress protection rating of the unit IPX4 IPX4 IPX4 IPX4
Electric motor IP rating IP54 IP54 IP54 IP54
* Parameters for a VKPFI model.

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VKPF VKPFI
Model Dimensions [mm] Weight [kg]
BB1 B2 HH1 H2 H3 L
VKPF 4E 400х200 400 420 440 200 220 240 255 500 17.5
VKPF 4D 400х200 400 420 440 200 220 240 255 500 17.5
VKPF 4E 500х250 500 520 540 250 270 290 335 640 24
VKPF 4D 500х250 500 520 540 250 270 290 335 640 24
VKPF 6E 500х250 500 520 540 250 270 290 335 640 24
VKPF 6D 500х250 500 520 540 250 270 290 335 640 24
VKPF 4E 500х300 500 520 540 300 320 340 365 680 33
VKPF 4D 500х300 500 520 540 300 320 340 365 680 33
VKPF 6E 500х300 500 520 540 300 320 340 365 680 33
VKPF 6D 500х300 500 520 540 300 320 340 365 680 33
VKPF 4E 600х300 600 620 640 300 320 340 375 680 35
VKPF 4D 600х300 600 620 640 300 320 340 375 680 35
VKPF 6E 600х300 600 620 640 300 320 340 375 680 35
VKPF 6D 600х300 600 620 640 300 320 340 375 680 35
VKPF 4E 600х350 600 620 640 350 370 390 425 735 49.5
VKPF 4D 600х350 600 620 640 350 370 390 425 735 49.5
VKPF 6E 600х350 600 620 640 350 370 390 425 735 49.5
VKPF 6D 600х350 600 620 640 350 370 390 425 735 49.5
VKPF 4D 700х400 700 720 740 400 420 440 480 780 60
VKPF 6D 700х400 700 720 740 400 420 440 480 780 56
VKPF 4D 800х500 800 820 840 500 520 540 580 820 74
VKPF 6D 800х500 800 820 840 500 520 540 580 820 70
VKPF 8D 800х500 800 820 840 500 520 540 580 820 70
VKPF 6D 900х500 900 920 940 500 520 540 580 954 90
VKPF 8D 900х500 900 920 940 500 520 540 580 954 90
VKPF 6D 1000х500 1000 1020 1040 500 520 540 580 954 95
VKPF 8D 1000х500 1000 1020 1040 500 520 540 580 954 95

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VKP/VKPI/VKPF/VKPFI
Model Dimensions [mm] Weight [kg]
BB1 B2 B3 HH1 H2 H3 L
VKPFI 4E 400х200 400 420 440 470 200 220 240 360 500 29
VKPFI 4D 400х200 400 420 440 470 200 220 240 360 500 29
VKPFI 4E 500х250 500 520 540 570 250 270 290 410 640 40.5
VKPFI 4D 500х250 500 520 540 570 250 270 290 410 640 40.5
VKPFI 6E 500х250 500 520 540 570 250 270 290 410 640 40.5
VKPFI 6D 500х250 500 520 540 570 250 270 290 410 640 40.5
VKPFI 4E 500х300 500 520 540 570 300 320 340 460 680 52.5
VKPFI 4D 500х300 500 520 540 570 300 320 340 460 680 52.5
VKPFI 6E 500х300 500 520 540 570 300 320 340 460 680 52.5
VKPFI 6D 500х300 500 520 540 570 300 320 340 460 680 52.5
VKPFI 4E 600х300 600 620 640 670 300 320 340 480 680 56
VKPFI 4D 600х300 600 620 640 670 300 320 340 480 680 56
VKPFI 6E 600х300 600 620 640 670 300 320 340 480 680 56
VKPFI 6D 600х300 600 620 640 670 300 320 340 480 680 56
VKPFI 4E 600х350 600 620 640 670 350 370 390 530 735 72
VKPFI 4D 600х350 600 620 640 670 350 370 390 530 735 72
VKPFI 6E 600х350 600 620 640 670 350 370 390 530 735 72
VKPFI 6D 600х350 600 620 640 670 350 370 390 530 735 72
VKPFI 4D 700х400 700 720 – 800 400 420 – 620 880 103
VKPFI 6D 700х400 700 720 – 800 400 420 – 620 880 99
VKPFI 6D 800х500 800 820 – 900 500 520 – 720 935 120
VKPFI 4D 800х500 800 820 – 900 500 520 – 720 935 127
VKPFI 8D 800х500 800 820 – 900 500 520 – 720 935 120
VKPFI 6D 900х500 900 920 – 1000 500 520 – 720 1000 142
VKPFI 8D 900х500 900 920 – 1000 500 520 – 720 1000 142
VKPFI 6D 1000х500 1000 1020 – 1100 500 520 – 720 1000 150
VKPFI 8D 1000х500 1000 1020 – 1100 500 520 – 720 1000 150

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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.
The fan can operate at any position.
When positioned under the ceiling, it is advisable to mount the fan with the motor cover downwards for easy access to the terminal box
and the motor.
Check the fan power cables for integrity and make sure the impeller has smooth rotation prior to mounting.
Install flexible connectors on both sides of the fan.
Mount the fan in such a way that the arrow on the fan casing matches the air flow direction in the system.
The fan should always be installed on its own hangers so that it does not load the flexible connectors and the connected air ducts.
The most suitable mounting option is fixing the unit to the ceiling with anchors or suspending it on perforated metal plates.
Before mounting, apply a self-adhesive seal to the end surfaces of the fan.
Connect the fan to the air ducts with M8 bolts and nuts.
Since the fan belongs to Class 1 in terms of electrical hazard protection proper grounding is a must:
the PE terminal must be connected to the protective ground.
The fan design is constantly being improved, thus some models may be slightly different from those described in this manual.
VARIANT OF FAN MOUNTING BETWEEN SEGMENTS OF RECTANGULAR AIR DUCTS
1
3
2
4

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VKP/VKPI/VKPF/VKPFI
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.
Depending on the fan type it is rated for connection either to single-phase AC 230 V/50/60 Hz or three-phase AC 380-400 V/50/60 Hz
power mains.
The connection must be made using durable, insulated and heat-resistant conductors (cables, wires).
The external lead-in must be equipped with a circuit breaker built into the stationary wiring to disconnect all the mains phases.
The QF external circuit breaker location must ensure free access for quick shutdown of the fan.
The trip current must be in compliance with current consumption.
The recommended rated current of the circuit beaker and the conductor cross section for various types of fans are shown in the table.
The given conductor cross sections are for reference only.
The actual conductor cross–section selection must be based on its type, the maximum permissible heating, insulation, length and
installation method (in the air, pipes or inside walls).
The recommended type of circuit breakers is D or C, but with replacement to D or to a higher rating in case of tripping because of
frequent start-ups.
The recommended circuit breaker rated current and conductor cross section
Model Rated current of the circuit breaker
Recommended cable, n x S, where n is the
number of wires, and S is the cross section
in mm2
VKP, VKPI 2E 400x200 3 3 x 0.75
VKP, VKPI 2E 500x250 6 3 x 0.75
VKP, VKPI 4E 500x300 2 3 x 0.75
VKP, VKPI 4D 500x300 2 5 x 0.75
VKP, VKPI 4E 600x300 4 5 x 0.75
VKP, VKPI 4D 600x300 2 5 x 0.75
VKP, VKPI 4E 600x350 10 3 x 1
VKP, VKPI 4D 600x350 4 5 x 0.75
VKP 4D 1000x500 20 5 x 1.5
VKPF, VKPFI 4E 400x200 4 3 x 0.75
VKPF, VKPFI 4D 400x200 2 5 x 0.75
VKPF, VKPFI 4E 500x250 10 3 x 1
VKPF, VKPFI 4D 500x250 4 5 x 0.75
VKPF, VKPFI 4E 500x300 4 3 x 0.75
VKPF, VKPFI 4D 500x300 2 5 x 0.75
VKPF, VKPFI 4E 600x300 10 3 x 1.5
VKPF, VKPFI 4D 600x300 6 5 x 0.75
VKPF, VKPFI 4E 600x350 6 3 x 2.5
VKPF, VKPFI 4D 600x350 3 5 x 1.0
VKPF, VKPFI 4D 700x400 20 5 x 1.5
VKPF, VKPFI 4D 800x500 10 5 x 1.5
VKPF, VKPFI 6D 800x500 10 5 x 1.0
VKPF, VKPFI 6D 900x500 3 5 x 1.5
VKPF, VKPFI 6D 1000x500 40 5 x 2.5

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Wiring diagram for VKP/VKPI 2E 400х200;
VKP/VKPI 2E 500х250; VKP/VKPI 4E 500Х300;
VKP/VKPI 4E 600Х300; VKP/VKPI 4E 600Х350 units with a single-
phase motor
Wiring diagram for VKP/VKPI 4D 500х300 units (first option) with
a three-phase motor
~230 V
50/60 Hz
L
N
X1
1
2
3
N
L
QF
PE
~230 В
50/60 Гц
4
PE
L2
L1
QF
PE
~400 В
50/60 Гц L2
L1
X1
2
4
1
3
L3
L3
L2
L1
QF
PE
L2
L1
X1
2
4
1
3
L3
L3
PE
L2
L1
QF
PE
~400 В
50/60 Гц L2
L1
X1
2
4
1
3
L3
L3
5
4
TW1
TW2
TW1
TW2
L2
L1
QF
PE
~400 В
50/60 Гц
L2
L1
X1
2
7
1
3
L3
L3
5
4
6
V1
U1
W1
W2
PE
U2
V2
L1
L2
L3
8
9
TW2
TW1TW1
TW2
TW1
TW2
PE
PE
~400 V
50/60 Hz
L
N
X1
1
2
3
N
L
QF
PE
~230 В
50/60 Гц
4
PE
L2
L1
QF
PE
~400 В
50/60 Гц
L2
L1
X1
2
4
1
3
L3
L3
L2
L1
QF
PE
L2
L1
X1
2
4
1
3
L3
L3
PE
L2
L1
QF
PE
~400 В
50/60 Гц L2
L1
X1
2
4
1
3
L3
L3
5
4
TW1
TW2
TW1
TW2
L2
L1
QF
PE
~400 В
50/60 Гц
L2
L1
X1
2
7
1
3
L3
L3
5
4
6
V1
U1
W1
W2
PE
U2
V2
L1
L2
L3
8
9
TW2
TW1TW1
TW2
TW1
TW2
PE
PE
Wiring diagram for VKP/VKPI 4D 500х300 (second option),
VKP/VKPI 4D 600х300 units with a three-phase motor
Wiring diagram for VKP/VKPI 4D 600х350 units with a three-phase
motor
~400 V
50/60 Hz
L
N
X1
1
2
3
N
L
QF
PE
~230 В
50/60 Гц
4
PE
L2
L1
QF
PE
~400 В
50/60 Гц L2
L1
X1
2
4
1
3
L3
L3
L2
L1
QF
PE
L2
L1
X1
2
4
1
3
L3
L3
PE
L2
L1
QF
PE
~400 В
50/60 Гц
L2
L1
X1
2
4
1
3
L3
L3
5
4
TW1
TW2
TW1
TW2
L2
L1
QF
PE
~400 В
50/60 Гц
L2
L1
X1
2
7
1
3
L3
L3
5
4
6
V1
U1
W1
W2
PE
U2
V2
L1
L2
L3
8
9
TW2
TW1TW1
TW2
TW1
TW2
PE
PE
~400 V
50/60 Hz
L
N
X1
1
2
3
N
L
QF
PE
~230 В
50/60 Гц
4
PE
L2
L1
QF
PE
~400 В
50/60 Гц L2
L1
X1
2
4
1
3
L3
L3
L2
L1
QF
PE
L2
L1
X1
2
4
1
3
L3
L3
PE
L2
L1
QF
PE
~400 В
50/60 Гц L2
L1
X1
2
4
1
3
L3
L3
5
4
TW1
TW2
TW1
TW2
L2
L1
QF
PE
~400 В
50/60 Гц
L2
L1
X1
2
7
1
3
L3
L3
5
4
6
V1
U1
W1
W2
PE
U2
V2
L1
L2
L3
8
9
TW2
TW1TW1
TW2
TW1
TW2
PE
PE
Wiring diagram for VKPF, VKPFI fans with a single-phase motor Wiring diagram for VKPF, VKPFI fans with a three-phase motor
~230 V
50 Hz
N
L
QF
PE
~230 В
50 Гц
L
N
X1
3
6
2
5
4
1
TK1
TK2
T
K2
T
K1
РЕ
1
2
TW1
TW2
TW1
TW2
L2
L1
QF
PE
~400 В
50 Гц
L2
L1
X1
4
9
3
5
L3
L3
7
6
8
U1
W2
W1
PE
U2
V2
L1
L2
L3
V1
РЕ
~400 V
50 Hz
N
L
QF
PE
~230 В
50 Гц L
N
X1
3
6
2
5
4
1
TK1
TK2
TK2
TK1
РЕ
1
2
TW1
TW2
T
W1
TW2
L2
L1
QF
PE
~400 В
50 Гц
L2
L1
X1
4
9
3
5
L3
L3
7
6
8
U1
W2
W1
PE
U2
V2
L1
L2
L3
V1
РЕ
* Х1 – terminal block, QF – automatic circuit breaker (not included in the delivery set).

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VKP/VKPI/VKPF/VKPFI
Recommended wiring diagram for a single-phase motor with
thermal protection
Recommended wiring diagram for a three-phase motor with
thermal protection
~230 V
50/60 Hz
L
N
X1
1
2
3
L
QF
N
PE
TW 1
4
5
6
TW 2
KM 1
S1
“ON”
S2
“OFF”
KM 1
РЕ
L1
TW1
TW2
S1
“ON”
S2
“OFF”
KM1
L2
L3
QF
L1
L2
L3
N
PE
PE
X1
~400 V
50/60 Hz
L
N
X1
1
2
3
L
QF
N
PE
TW 1
4
5
6
TW 2
KM 1
S1
“ON”
S2
“OFF”
KM 1
РЕ
L1
TW1
TW2
S1
“ON”
S2
“OFF”
KM1
L2
L3
QF
L1
L2
L3
N
PE
PE
X1
X1 – terminal block, QF – circuit breaker, KM1 – magnetic starter, S1, S2 – control buttons (QF, KM1, S1, S2 are not included in the delivery
set)
The TW1, TW2 (TK1, TK2) are the electrical leads of the normally closed contact of the motor overheating protection.
Connect the contact in series to power circuit of the magnetic starter coil KM1 that starts the motor after pressing the S1 button.
After the motor overheating the contact gets broken and switches the starter coil off to cut power off and stop the motor.
The QF circuit breaker, the magnetic starter KM1, the control knobs S1 and S2 are not included in the delivery set and must be installed
by the user.
VKP, VKPI, VKPF, VKPFI 400200, 500250, 500300, 600300, 600350
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1234
VKPF, VKPFI 700400, 800500, 900500, 1000500
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
4
1234

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VKP/VKPI/VKPF/VKPFI
www.ventilation-system.com
ASYNCHRONOUS ELECTRIC MOTOR STARTING METHODS
There are several methods for starting asynchronous squirrel-cage electric motors.
The most common methods are: direct-on-line (DOL), with a soft starter (SS) or with a frequency converter (FC).
Direct-on-line starting
In case of direct-on-line starting (i.e. by connecting the motor to the electric mains with a simple line contactor), the motor starting
time significantly increases due to high inertia of the impeller, which, in turn, results in high in-rush starting currents in the circuit. These
currents of long duration may cause voltage slumps (especially if the feed line section falls short of the requirements), which may affect
load operation.
The in-rush current consumed by an electric motor in case of DOL starting is 5-8 times larger than the rated value (or even 10-14 times
larger in some rare instances). It should be noted that the torque developed by the motor also significantly exceeds the rated value.
Upon energisation the motor operates as a transformer with a squirrel-cage secondary winding formed by the rotor cage with a very low
resistance.
The rotor develops high induced current causing a rush of current in the feed line.
The startup torque during starting averages 0.5-1.5 of the rated torque value.
Despite such advantages as simple construction, high startup current, quick start and low cost, direct-on-line systems are suitable only
in the following cases:
• the motor power is low compared to the mains power which limits the adverse effect of the rush of current
• the driven mechanism does not require gradual speed build-up or is equipped with a damping device to smooth out the inrush
• the high startup torque has no adverse effects on the operation of the driven mechanism
Soft start. SS starting.
A soft starter gradually increases the voltage supplied to the motor – from the initial to the rated value.
This starting system can be used to meet the following goals:
• limit the motor current
• regulate the torque
Regulation by limiting the current sets the maximum in-rush current equal to 300-400 % (or 250 % in some rare instances) of the rated
current and reduces torque characteristics. This type of regulation is especially suited for turbomachinery such as centrifugal pumps and
fans.
Regulation by variation of torque optimizes the torque during startup and reduces in-rush current in the circuit. These conditions are
suitable for mechanisms with constant load resistance.
This type of soft starting may differ in the implementation pattern:
• motor start
• motor start and stop
• device bridging at the end of start sequence
• start and stop of several motors in stage circuits
Soft start. FC starting.
During the starting the FC raises the frequency from 0 Hz to the electrical mains frequency (50 or 60 Hz). As the frequency is increased
gradually, the motor can be assumed to operate at its rated speed for a given frequency value. Furthermore, on the assumption that the
motor runs at its rated speed the nominal torque should be immediately available whereas the current will be approximately equal to
the rated value.
This starting system is used for speed control and regulation and can be used in the following cases:
• start with high-inertia load
• start with high load and limited-capacity power supply source
• optimization of electric power consumption depending on turbomachinery speed
The aforementioned starting system can be used for all types of mechanisms.
Problems associated with DOL starting
The problems caused by DOL starting may be divided into two groups:
1. An abrupt start causes mechanical shock, jolts in the mechanism, shock removal of free play etc.
2. A heavy start cannot be completed.
Let us review three variations of a heavy start:
1. The feed line performance is barely sufficient or insufficient to maintain the induced current.
Typical symptoms: Upon starting the circuit breakers at the system input are tripped; the lights, certain relays and contactors go off,
and the supply generator shuts down.
Solution: In the best-case scenario an SS device may help reduce the in-rush current to 250 % of the motor rated current. If this is
insufficient, an FC is necessary.

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VKP/VKPI/VKPF/VKPFI
2. The motor cannot start the mechanism with DOL starting.
Typical symptoms: The motor fails to turn or “freezes”at certain speed which is maintained until actuation of the protection suite.
Solution: This problem may not be solved with an SS device. The motor develops insufficient shaft torque. However, this problem can
be addressed by using an FC, but each case may be different.
3. The motor spins up the mechanism with authority, but fails to reach the rated rotation speed.
Typical symptoms: The input automatic circuit breaker is tripped during spin-up. This often happens with heavy-weight fans with a
considerable rotation speed.
Solution: Such problems may be addressed with an SS device, but not with 100 % certainty. The closer the motor speed to the rated
value during the actuation of the protective equipment, the higher the chances of success. The use of an FC in this case helps solve the
problem fundamentally.
Standard switching equipment (automatic circuit breakers, contactors and motor starters) is not designed to withstand
prolonged overloads normally causing the fan to shut down automatically DOL starting that continues for a long period of
time.
Using switching equipment with a higher maximum current rating renders the electric motor protection system less sensitive.
As a result the switching equipment will not be able to detect motor overload in time due to a high current sensing threshold.
Such problems as mentioned above can only be addressed by utilizing a soft starter or a frequency converter to start the fan.
MAKE SURE THAT THE FAN IMPELLER ROTATES IN THE DIRECTION MARKED BY THE
ARROW ON THE FAN CASING.
IF NECESSARY, CHANGE THE IMPELLER ROTATION DIRECTION BY ALTERING THE PHASE
SEQUENCE ON THE ELECTRIC MOTOR TERMINALS.
Prior to performing any technical maintenance and repair disconnect the fan from the electric mains and wait until its rotating parts
come to a complete stop.
The technical maintenance includes periodic cleaning of the surfaces from accumulated dust and dirt.
Use a soft brush or compressed air to remove dust from metal surfaces of the fan. Use a vacuum cleaner to remove dust from the sound
insulating surface.
The impeller blades require thorough cleaning once in 6 months.
Detach air ducts from the fan before starting maintenance works.
Clean the impeller blades with a soft cloth wetted in mild water detergent solution. Avoid liquid dripping on the motor.
Wipe the fan surfaces dry after cleaning.
While cleaning the fan make sure the balance counterweights are not shifted and the impeller is not misaligned.
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY MAINTENANCE
OPERATIONS!
ENSURE THAT THE UNIT IS SWITCHED OFF FROM THE SUPPLY MAINS BEFORE
REMOVING THE GUARD.
TECHNICAL MAINTENANCE

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1
3
4
5
6
2

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VKP/VKPI/VKPF/VKPFI
STORAGE AND TRANSPORTATION REGULATIONS
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range
from +5 ˚C to +40 ˚C and relative humidity up to 70 %.
• Storage environment must not contain aggressive vapors and chemical mixtures provoking corrosion, insulation, and sealing
deformation.
• Use suitable hoist machinery for handling and storage operations to prevent possible damage to the unit.
• Follow the handling requirements applicable for the particular type of cargo.
• The unit can be carried in the original packaging by any mode of transport provided proper protection against precipitation and
mechanical damage. The unit must be transported only in the working position.
• Avoid sharp blows, scratches, or rough handling during loading and unloading.
• Prior to the initial power-up after transportation at low temperatures, allow the unit to warm up at operating temperature for at least
3-4 hours.
Problem Possible reasons Troubleshooting
The fan does not run. No power supply. Check the automatic circuit breaker.
Check the electric connections.
Noisy operation. Impeller imbalance. Clean the impeller.
TROUBLESHOOTING

20
VKP/VKPI/VKPF/VKPFI
www.ventilation-system.com
MANUFACTURER’S WARRANTY
The product is in compliance with EU norms and standards on low voltage guidelines and electromagnetic compatibility. We hereby
declare that the product complies with the provisions of Electromagnetic Compatibility (EMC) Directive 2014/30/EU of the European
Parliament and of the Council, Low Voltage Directive (LVD) 2014/35/EU of the European Parliament and of the Council and CE-marking
Council Directive 93/68/EEC. This certificate is issued following test carried out on samples of the product referred to above.
The manufacturer hereby warrants normal operation of the unit for 24 months after the retail sale date provided the user's observance
of the transportation, storage, installation, and operation regulations. Should any malfunctions occur in the course of the unit operation
through the Manufacturer's fault during the guaranteed period of operation, the user is entitled to get all the faults eliminated by the
manufacturer by means of warranty repair at the factory free of charge. The warranty repair includes work specific to elimination of faults
in the unit operation to ensure its intended use by the user within the guaranteed period of operation. The faults are eliminated by means
of replacement or repair of the unit components or a specific part of such unit component.
The warranty repair does not include:
• routine technical maintenance
• unit installation/dismantling
• unit setup
To benefit from warranty repair, the user must provide the unit, the user's manual with the purchase date stamp, and the payment
paperwork certifying the purchase. The unit model must comply with the one stated in the user’s manual. Contact the Seller for warranty
service.
The manufacturer’s warranty does not apply to the following cases:
• User’s failure to submit the unit with the entire delivery package as stated in the user’s manual including submission with missing
component parts previously dismounted by the user.
• Mismatch of the unit model and the brand name with the information stated on the unit packaging and in the user's manual.
• User’s failure to ensure timely technical maintenance of the unit.
• External damage to the unit casing (excluding external modifications as required for installation) and internal components caused
by the user.
• Redesign or engineering changes to the unit.
• Replacement and use of any assemblies, parts and components not approved by the manufacturer.
• Unit misuse.
• Violation of the unit installation regulations by the user.
• Violation of the unit control regulations by the user.
• Unit connection to power mains with a voltage different from the one stated in the user's manual.
• Unit breakdown due to voltage surges in power mains.
• Discretionary repair of the unit by the user.
• Unit repair by any persons without the manufacturer’s authorization.
• Expiration of the unit warranty period.
• Violation of the unit transportation regulations by the user.
• Violation of the unit storage regulations by the user.
• Wrongful actions against the unit committed by third parties.
• Unit breakdown due to circumstances of insuperable force (fire, flood, earthquake, war, hostilities of any kind, blockades).
• Missing seals if provided by the user’s manual.
• Failure to submit the user’s manual with the unit purchase date stamp.
• Missing payment paperwork certifying the unit purchase.
FOLLOWING THE REGULATIONS STIPULATED HEREIN WILL ENSURE A LONG AND
TROUBLEFREE OPERATION OF THE UNIT.
USER’S WARRANTY CLAIMS SHALL BE SUBJECT TO REVIEW ONLY UPON
PRESENTATION OF THE UNIT, THE PAYMENT DOCUMENT AND THE USER’S MANUAL
WITH THE PURCHASE DATE STAMP.