TVE

Quick sizing tables provide a good overview of the minimum differential pressures, the volume flow rate accuracy and the room sound pressure levels that can be expected. Intermediate values may be achieved by interpolation. The sound power levels for calculating the sound pressure levels were measured in the TROX laboratory according to DIN EN ISO 5135 - see "Basic information and nomenclature". Exact results as well as spectral data for all control components are provided by the design with our Easy Product Finder design program. The first selection criteria for the nominal size are the actual volume flow rates q_vmin and q_vmax.

Volume flow rate ranges and minimum differential pressure values

The minimum differential pressure of VAV terminal units is an important factor in designing the ductwork and in rating the fan including speed control. It must be ensured that under all operating conditions a sufficient pressure differential across the regulator (Δ_pstat,min) is pending. The measurement points for fan speed control must be selected accordingly. The volume flow rates given for VAV terminal units depend on the nominal size and on the control component (attachment) that is installed.

Volume flow rate ranges and minimum differential pressure values

Dynamic and static measurement principle for controller

Attachment: Easy, XB0, XM0, XM0-J6, XS0, XS0-J6

NG	qv [l/s]	qv [m³/h]	Δpstmin [Pa]				Δqv [±%]
100	4	14	1	1	1	1	18
100	35	127	11	13	15	17	7
100	67	241	38	46	53	61	5
100	98	354	82	98	115	131	5
125	6	21	1	1	1	1	19
125	58	207	9	11	13	14	7
125	109	393	32	38	45	51	5
125	160	579	70	83	96	109	5
160	10	35	1	1	1	1	18
160	93	333	6	7	9	10	7
160	175	631	21	25	29	33	5
160	258	929	45	54	63	72	5
200	16	55	1	1	1	1	18
200	150	541	5	6	7	8	7
200	285	1027	18	21	25	28	5
200	420	1513	39	46	53	60	5
250	25	87	1	1	1	1	18
250	228	822	4	5	5	6	7
250	433	1558	14	16	18	21	5
250	636	2293	29	34	39	44	5

① Basic unit
② Basic unit with circular silencer CS/CF, insulation thickness 50 mm, length 500 mm
③ Basic unit with circular silencer CS/CF, insulation thickness 50 mm, length 1000 mm
④ Basic unit with circular silencer CS/CF, insulation thickness 50 mm, length 1500 mm

Quick sizing table sound pressure level

In the quick sizing are generally accepted attenuation and insulation values have been taken into account. If the sound pressure level exceeds the required level, a larger air terminal unit and/or a silencer is required. Further information on the acoustic data can be found in the basic information and nomenclature.

Quick sizing table for air-regenerated noise L_PA

Controller including sound attenuator variants

			Δpst = 150 Pa				Δpst = 500 Pa
NG	qv [l/s]	qv [m³/h]	LPA	LPA1② text box	LPA1③ text box	LPA1④ text box	LPA	LPA1② text box	LPA1③ text box	LPA1④ text box
100	4	14	32	< 15	< 15	< 15	42	17	< 15	< 15
100	35	127	46	32	28	24	56	40	34	31
100	67	241	51	37	33	29	60	47	42	38
100	98	354	55	37	32	30	63	50	46	42
125	6	21	37	15	< 15	< 15	48	26	16	< 15
125	58	207	48	34	28	25	59	42	35	31
125	109	393	52	39	34	31	62	47	41	37
125	160	579	56	41	37	34	63	49	44	40
160	10	35	42	24	15	< 15	54	38	29	22
160	93	333	45	33	28	25	58	43	36	31
160	175	631	50	38	34	31	58	44	38	34
160	258	929	53	40	35	33	57	44	39	36
200	16	55	33	20	< 15	< 15	44	32	26	21
200	150	541	46	36	31	28	57	47	42	39
200	285	1027	49	38	34	32	58	49	44	41
200	420	1513	53	43	40	38	58	49	45	42
250	25	87	40	29	22	17	52	42	36	31
250	228	822	46	37	32	29	58	50	45	41
250	433	1558	47	39	34	32	57	50	45	41
250	636	2293	52	45	41	38	57	50	45	42

Air-regenerated noise L_PA [dB] with static differential pressure Δ_pst from 150 or 500 Pa

① Basic unit

② Basic unit with circular silencer CS/CF, insulation thickness 50 mm, length 500 mm

③ Basic unit with circular silencer CS/CF, insulation thickness 50 mm, length 1000 mm

④ Basic unit with circular silencer CS/CF, insulation thickness 50 mm, length 1500 mm

 

Quick sizing table case-radiated noise L_PA

Controller including acoustic cladding variants

			Δpst = 150 Pa		Δpst = 500 Pa
NG	qv [l/s]	qv [m³/h]	LPA2 text box	LPA3 text box	LPA2 text box	LPA3 text box
100	4	14	15	< 15	25	< 15
100	35	127	29	18	39	28
100	67	241	34	23	43	32
100	98	354	37	26	46	35
125	6	21	20	< 15	31	20
125	58	207	31	20	42	31
125	109	393	35	24	45	34
125	160	579	40	29	47	36
160	10	35	22	15	34	27
160	93	333	25	18	38	31
160	175	631	31	24	39	32
160	258	929	36	29	40	33
200	16	55	< 15	< 15	24	< 15
200	150	541	26	< 15	37	22
200	285	1027	32	17	41	26
200	420	1513	38	23	43	28
250	25	87	24	< 15	36	21
250	228	822	32	17	44	29
250	433	1558	36	21	46	31
250	636	2293	43	28	48	33

Case-radiated noise L_PA [dB] with static differential pressure Δ_pst from 150 or 500 Pa

① Basic unit

② Basic unit with acoustic cladding

Note:

Information on case-radiated noise for combinations of basic unit and optional acoustic cladding and secondary silencer can be found in the Easy Product Finder design program.

Circular VAV terminal units for variable and constant air volume systems, suitable for supply or extract air, available in five nominal sizes. High control accuracy even in case of unfavourable upstream conditions. Control range at least 1:25. Differential pressure detection and control via the control damper blade. Transmission of effective pressure tubeless through differential pressure channel in the shaft. Closed blade air leakage to EN 1751: at least class 3, from NS 200: class 4. Casing air leakage to EN 1751, class C. Ready-to-commission unit which consists of the mechanical parts and the factory installed electronic control component. Position of the damper blade can be seen from the outside on the control component. Damper blade is factory set to open position which allows ventilation airflow even without control.

Special characteristics

• High effective pressure signal at a small angle of attack
• Factory set-up or programming and aerodynamic function testing
• Volume flow rate can be measured and subsequently adjusted on site; additional adjustment tool may be necessary (depending on the variant of the control component)
• Effective pressure monitoring tubeless via damper blade
• Effective pressure transmission through effective pressure channel in shaft
• Any direction of flow with dynamic transducer
• Any installation orientation even with static transducers
• Suitable for airflow velocity of 0.5 - 13 m/s
• Compact dimensions for use in confined ceiling areas

Materials and surfaces

• Casing made of galvanised sheet steel
• Control damper blade, effective pressure sensor and shaft made of plastic, PA6, UL94, flame retardant (V-0)
• Damper blade seal made of plastic, TPU, microbacterial resistant
• Plastic bearings

Connection type

• Spigot with groove for lip seal, suitable for ducts according to
• EN 1506 or EN 13180

Technical data

• Minimum differential pressure: Up to 82 Pa (without circular silencer)
  
  

Maximum differential pressure

• Control component with dynamic transducer: 900 Pa
• Control component with static transducer: 600 Pa

Specification text attachment

Variable volume flow control with electronic Easy controller to connect an external control signal; actual value signal can be integrated into the central BMS.

• Supply voltage 24 V AC/DC
• Signal voltages 0 – 10 V DC
• Possible override controls with external switches using volt-free switches: CLOSED, OPEN, qvmin and qvmax
• Potentiometers with percentage scales to set the volume flow rates qvmin andqvmax
• The actual value signal relates to the nominal volume flow rate such that commissioning and subsequent adjustment are simplified
• Volume flow rate control range: approx. 4 – 100 % of the nominal volume flow rate
• From the outside well visible indicator light for signaling the various operating conditions

Electrical connections with screw terminals. Double terminals for looping the supply voltage, i.e. for the simple connection of voltage transmission to the next controller.

Sizing data

qv _______________________ [m³/h]

Δpst _______________________ [Pa]

Air-regenerated noise

LPA _______________________ [dB(A)]

Case-radiated noise

LPA _______________________ [dB(A)]

Order code for volume flow control (with Easy attachment)

TVR

TVE	–	D	/	200	/	D2	/	Easy
|		|		|		|		|
1		2		5		6		7

1 Type

TVE, VARYCONTROL control components

Easy controller, dynamic
Easy	qv	0 – 10 V	integrated	slow running integrated	①
Compact controller, dynamic
XB0	qv	0 – 10 V or 2 – 10 V	integrated	slow running integrated	③
XM0	qv	Modbus-RTU-Schnittstelle	integrated	slow running integrated	①
XM0–J6	qv	Modbus-RTU-Schnittstelle mit RJ12 Steckbuchse (für X-AIRCONTROL)	integrated	slow running integrated	①
Compact controller, static
XS0	qv	Modbus-RTU-Schnittstelle	integrated	slow running integrated	①
XS0–J6	qv	Modbus-RTU-Schnittstelle mit RJ12 Steckbuchse (für X-AIRCONTROL)	integrated	slow running integrated	①

q_v Volume flow rate
① TROX, ③ TROX/Gruner