Design And Operating Principle - Vents VK Series User Manual

Model
VK 100 Q/VK 100/VK 100 Duo
VK 125 Q/VK 125/VK 125 Duo
VK 150/VK 150 Duo
VK 200/VK 200 Duo
VKS 200
VK 250 Q/VK 250/VK 250 Duo
VK 315/VK 315 Duo
VKS 315

DESIGN AND OPERATING PRINCIPLE

1. Casing
2. Motor
3. Impeller
4. Mounting bracket
5. Terminal box
The fan is equipped with a single-phase motor with an external rotor, equipped with a centrifugal impeller. The Duo models are
supplied with a double-speed asynchronous motor.
The fan is rated for continuous operation.
Electronics operation algorithm
VK U/U1/U2
The fan is equipped with an electronic module TSC (speed controller with an electronic thermostat) for automatic speed
control (air flow) depending on the air temperature.
The terminal compartment incorporates 2 control knobs:
• presetting speed
• setting electric thermostat threshold value
The fan is equipped with two indicators:
• temperature sensor indicator (hereinafter referred to as TSI) - yellow colour
• motor control indicator (hereinafter referred to as MCI) - green/yellow colour
When the fan turns on, the TSI indicates the unit operation algorithm:
• one pulse - U
• two pulses - U1
• three pulses - U2
The MCI lights up in green when the motor rotates and in red when it stops (or rotates
very slowly).To set the thermostat threshold, rotate the thermostat control knob clockwise to increase or counter-clockwise to decrease
the temperature set point. To set the fan speed (air flow), rotate the speed control knob in the same way.
VK U: In this case, fan speed switching operations are rare.
The TSI lights up and the fan switches to the maximum speed as the room air temperature exceeds the set point.
As the air temperature drops 2 °C below the set point or if the initial temperature is below the set point, the TSI goes out and the fan
operates with the set speed.
VK U1: The speed switching operations are more frequent as compared to the temperature-based functioning logic (U), but one speed
interval continues at least 5 minutes.
The TSI lights up and the fan switches to the maximum speed as the room air temperature exceeds the set point.
As the air temperature drops down below the set point, the TSI starts blinking, the timer starts a 5-minute countdown and then the fan
switches to the set lower speed and the TSI goes out.
VK U2: The fan starts only at a certain air temperature.
The TSI lights up and the fan switches to the set speed as the room air temperature exceeds the set point.
As the air temperature drops 2 °C below the set point or if the initial temperature is below the set point, the TSI goes out and the fan
turns off.
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Overall dimensions of the unit [mm]
Dimensions [mm]
D D1
100 250 270
125 250 270
150/160 300 310
200 340 354
200 340 354
250 340 354
315 400 414
315 400 414
Weight
[kg]
B L
230 2,01
220 2,2
286 2,45
276 3,0
276 4,3
265 4,3
276 4,85
276 4,85
4
5
3
2
1
Temperature regulator
Air flow regulator
25
26
24
23 27
22 28
29
21
min max
20°C 30°C
7