VENTS TT 125 S

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Inline mixed flow fan. Maximum capacity - 440 m³/h.

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Description
Characteristics
Downloads
Dimensions
Additional characteristics
Designation key
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Description

APPLICATION
The VENTS TT fans are featured with wide capabilities and high performance of axial and centrifugal fans and are specifically designed for supply and exhaust ventilation of premises requiring high pressure, powerful air flow and low noise level.	The fans are compatible with round air ducts from Ø 100 to 315 mm. Exhaust ventilation systems based on the VENTS TT fans are the best solution for ventilation of bathrooms and kitchens and other humid premises as well for ventilation of flats, cottages, shops, cafes, etc.
DESIGN
The casing is made of high-quality durable plastic.	All the models may be equipped with a regulated timer with turn-off delay adjustable from 2 to 30 min.

The removable impeller and motor block with a terminal box is fixed to the casing assembled with the spigots by means of special clamps with latches. This makes the fan maintenance fast and easy. The fan maintenance does not require total disassembling. Just pull out the central block from the casing and perform required servicing.
MOTOR
The models of VENTS TT series are equipped with a single phase motor and are available in single or two speed modifications. Some dimension types are available with a more powerful motor (VENTS TT…S). The motors have thermal overheating protection to prevent the motor overload.	The ball bearings extend the motor service life up to 40 000 hrs. at non-stop operation. The motor has IP X4 ingress protection rating.

SPEED CONTROL
The double-speed motors are controlled with a built-in switch (V option) or an external switch for multi-speed fans (available upon separate order).	An integrated speed controller (option P), an external TRIAC or autotransformer speed controller (available upon separate order) are used for smooth speed control when connected to the maximum speed terminal.
MOUNTING
The fans are suitable for mounting at any angle and point of the system. Several fans may be installed inside one system. Several fans may be installed inside one system: parallel mounting to increase air flow; in series mounting to increase operating pressure;	The fan case is equipped with a flat mounting plate to attach the fan to the wall. The mounting box may be installed in any position to facilitate mounting and wiring.
THE FAN WITH ELECTRONIC MODULE OF THE TEMPERATURE SENSOR AND SPEED CONTROLLER (U OPTION)
The ideal solution for ventilation of the premises with high demands to permanent indoor temperature level, e.g. greenhouses. The fan with the electronic module of the temperature sensor and the speed controller is used for automatic speed control (air capacity regulation) depending on the air temperature in the ventilation duct or inside a room. Two modifications are possible: temperature sensor integrated inside a fan duct (U/U1 option) external temperature sensor fixed on 4 m power cable (Un / U1n option)	The electronic module of the front panel incorporates: the speed control knob for the setting the impeller speed; the thermostat control knob for setting the temperature set point. thermostat LED light.
OPERATING LOGIC OF THE FAN WITH THE ELECTRONIC MODULE OF THE TEMPERATURE SENSOR AND SPEED CONTROLLER
Set the desired air temperature (set point of the thermostat) with the thermostat control knob. Set the required minimum impeller speed (air flow) with the speed control knob. The motor switches to maximum speed (maximum air flow) as the temperature reaches and exceeds the set temperature set point. The motor switches to the pre-set speed as the temperature drops down below the set temperature point.	To avoid the frequent motor switching, e.g. when the temperature in the supply air duct is equal to the threshold value, the switching delay time is activated.
There are two switch delay patterns for various cases:
The temperature sensor-based switch delay (U option): the motor switches to higher speed as the air temperature exceeds 2°C above the set thermostat set point. The motor revers to the pre-set lower speed as the air temperature drops below the thermostat set point. This pattern is used to keep air temperature to within 2°C. In this case the fan switches are rare.	The timer-based switch delay (U1 option): as the air temperature exceeds the set thermostat set point, the motor switches to higher speed and the switch delay timer is activated for 5 min. The motor reverts to lower speed as the air temperature drops down below the thermostat set point and only after the timer countdown.This pattern is used for exact air temperature control. The fan changes its speed more often as compared to the temperature sensor-based switch delay, however the minimum timer interval is 5 minutes.
TT FANS APPLICATIONS

bathroom ventilation example	office ventilation example

parallel installation of fans in the storehouse to increase the air capacity

Characteristics

Parameter	TT 125 S min	TT 125 S max	Measurement unit
Voltage	1~230	1~230	V
Frequency	50/60	50/60	Hz
Current	0.14	0.27	A
Sound pressure level at 3 m distance	31	42	dBА
Power consumption	32	60	W
Maximum air capacity	295	440	m³/h
RPM	1850	2510	min^-1
Maximum transported air temperature	-25 +60	-25 +60	°С
Protection rating	IP X4	IP X4	-
Design	mixed-flow	mixed-flow	-
Weight	3.14	3.14	kg
Duct diameter	125	125	mm
Casing material	plastic	plastic	-
SEC Class	C	C	-
Duct	for round air ducts	for round air ducts	-
Mounting	Inline	Inline	-
*	To meet the requirements of ErP 2018, a speed controller and local demand control typology must be applied (connect a sensor).	To meet the requirements of ErP 2018, a speed controller and local demand control typology must be applied (connect a sensor).	-

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Dimensions

Characteristics

Parameter	Value	Measurement unit
∅D	123	mm
B	223	mm
H	250	mm
L	295	mm

Additional characteristics

Sound power level, A-filter applied											Sound pressure level at 3 meters, A-filter applied	Sound pressure level at 1 meters, A-filter applied
		Gen.	Octave-frequency band [Hz]								Sound pressure level at 3 meters, A-filter applied	Sound pressure level at 1 meters, A-filter applied
	Hz	Gen.	63	125	250	500	1000	2000	4000	8000	LpA, 3 m [dBA]	LpA, 1 m [dBA]
Min speed
L_wA to inlet	dBA	56	28	38	53	51	49	46	37	24	36	46
L_wA to outlet	dBA	55	27	37	52	50	48	45	37	23	35	45
L_wA to environment	dBA	52	23	33	47	46	44	42	34	21	31	41

Max speed
L_wA to inlet	dBA	67	38	49	63	63	60	57	50	38	47	57
L_wA to outlet	dBA	66	38	48	61	62	59	56	48	37	46	56
L_wA to environment	dBA	63	34	45	58	58	56	53	46	35	42	52

Designation key

Series	Air duct diameter	Options
VENTS TT	100; 125; 150; 160	S: high-powered motor; Т: adjustable timer from 2 to 30 minutes; U: speed controller with an electronic thermostat and a temperature sensor integrated inside an air duct. Temperature-based operation logic; Un: speed controller with an electronic thermostat and a temperature sensor fixed on a 4 m cable. Temperature-based operation logic; U1: speed controller with an electronic thermostat and a temperature sensor integrated inside an air duct. Timer-based operation logic; U1n: speed controller with an electronic thermostat and a temperature sensor fixed on a 4 m cable. Timer-based operation logic; U2n: speed controller with an electronic thermostat and a temperature sensor fixed on a 4 m cable. Temperature-based switching on/off; R1: power cord with mains plug; V: threeposition speed switch; P: integrated smooth speed controller.

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