TVM

VAV dual duct terminal unit, variant TVM

VAV terminal unit for the control of variable supply air volume flows
Connecting spigots for warm and cold air arranged at an angle of 90°

TVM

For dual duct systems

VAV dual duct terminal units for dual duct systems with variable volume flows in buildings with demanding acoustic requirements

Individual temperature control for each room or zone
Highly effective integral attenuator
Electronic control components for various applications
Closed blade air leakage to EN 1751, up to class 4
Casing leakage to EN 1751, Class B

Optional equipment and accessories

Acoustic cladding for the reduction of case-radiated noise
Secondary silencer Type TS for the reduction of air-regenerated noise

General information

Application

VAV dual duct terminal unit for use in ventilation and air conditioning systems
Supply air control in dual-duct volume flow systems
Closed-loop volume flow control using an external power supply
For maximum acoustic and thermal comfort
Demand-based mixing of cold and warm air
Shut-off by means of switching (by others)

Special features

Integral effective pressure sensor with 3 mm measuring holes (resistant to dust and pollution)
Integral attenuator with at least 26 dB insertion loss at 250 Hz
Factory set-up or programming and aerodynamic function testing
Volume flow rate can later be measured and adjusted on site; additional adjustment device may be necessary
Inspection access according to VDI 6022

Nominal sizes

TVM-S: 125, 160, 200
TVM: 125, 160, 200, 250, 315, 400

Variants

TVM-S Dual duct unit, 60° spigot arrangement
TVM-S-D Dual duct unit with acoustic cladding, 60° spigot arrangement
TVM: Dual duct unit, 90° spigot arrangement
TVM-D: Dual duct unit with acoustic cladding, 90° spigot arrangement
Units with acoustic cladding and/or secondary silencer Type TS for very demanding acoustic requirements
Acoustic cladding cannot be retrofitted

Parts and characteristics

Ready-to-commission unit which consists of mechanical parts and control components
Averaging effective pressure sensors for volume flow rate measurement, one in the cold air flow and in the total air flow respectively
Damper blade
Integral attenuator
Inspection access
Factory-mounted control components complete with wiring and tubing
Aerodynamic functional testing on a special test rig before shipping of each unit
Set-up data is given on a label affixed to the unit
High control accuracy (even with upstream bend R = 1D)

Attachments

Compact controller: Compact unit consisting of controller with potentiometers, effective pressure transducer and actuator

Accessories

Double lip seals (factory-fitted)

Useful additions

Secondary silencer Type TS

Construction features

Rectangular casing
Spigot on the fan end suitable for circular ducts to EN 1506 or EN 13180
Spigot with groove for double lip seal
Connection on the room end suitable for ducts
Baffle plate is fitted after the damper blade for optimum aerodynamic performance
Position of the damper blade indicated externally at shaft extension
Thermal and acoustic insulation (lining)

Materials and surfaces

Casing and damper blade made of galvanised sheet steel
Damper blade seal made of TPE plastic
Lining is mineral wool
Effective pressure sensor made of aluminium
Plastic plain bearings
Shaft and linkage made of galvanised steel

Variant with acoustic cladding (-D)

Acoustic cladding made of galvanised sheet steel
Lining is mineral wool
Rubber elements for the insulation of structure-borne noise

Mineral wool

To EN 13501, fire rating class A1, non-combustible
RAL quality mark RAL-GZ 388
Non-hazardous to health thanks to being highly biosoluble in accordance with the Ordinance on Hazardous Substances and Note Q of the European Directive (EC) No. 1272/2008
Faced with glass fibre fabric as a protection against erosion from airflow velocities of up to 20 m/s
Inert to fungal and bacterial growth

Standards and guidelines

Fulfils the hygiene requirements of

EN 16798, Part 3
VDI 6022
DIN 1946, Part 4
Further standards, guidelines in accordance with hygiene certificate

Casing leakage

EN 1751, Class B

Closed blade leakage
Nominal sizes 125 and 160

EN 1751, Class 3
Fulfilment of the general requirements of DIN 1946, Part 4, with regard to the acceptable closed blade air leakage

Nominal sizes 200 to 400

EN 1751, Class 4
Fulfilment of the increased requirements of DIN 1946, Part 4, with regard to the acceptable closed blade air leakage

Maintenance

Maintenance-free as construction and materials are not subject to wear

Informaţii tehnice

Function, Technical data, Quick sizing, Specification text, Order code, Related Products

Schematic illustration of the TVM-S

1 Damper blade for q_v,cold

2 Double lip seal

3 Effective pressure sensor for q_v,cold

4 Control components, e. g. a Compact controller

5 Inspection access

6 Effective pressure sensor for q_v,tot

7 Noise insulation

8 Damper blade for q_v,warm

The VAV terminal unit is fitted with two effective pressure sensors for measuring the volume flow rates, one in the cold air flow and one in the total air flow. The control components (attachments) include two effective pressure transducers that transform the effective pressure into an electric signal, two controllers, and two actuators; as Compact controller or with individual components. In most cases, the setpoint value for the dual duct terminal unit comes from a room temperature controller. The room temperature controller administers the cold air volume flow controller and indicates the setpoint value for the cold air flow rate between 0 and a maximum volume flow qᵥ_max. The controller compares the actual value with the setpoint value and alters the control signal of the damper actuator if there is a difference between the two values. The warm/overall

controller is set to the minimum volume flow rate qᵥ_min and controls the damper blade in the heat duct. As a consequence, a corresponding proportion of warm air is added. As the demand for cooling increases, the warm air damper blade closes such that eventually only cold air flows. An integral attenuator reduces the noise that is created by the restriction of the airflow. The airflow velocity at the room end is, due to the larger rectangular cross section, about half the velocity in the circular duct.

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".

Precise results and spectral data for all control components can be calculated 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. A sufficient pressure differential must be ensured under all operating conditions across the regulator (Δ_pt,min) for all terminal units. 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

Control component dynamic measurement principle - qv Extended
Attachment BC0, BM0, BM0-J6

NS	qv [l/s]	qv [m³/h]	Δpstmin [Pa]		Δqv [±%]
NS	qv [l/s]	qv [m³/h]	①	②	Δqv [±%]
125	59	210	19	24	9
125	104	373	58	76	6
125	149	536	119	156	5
125	194	699	202	265	4
160	101	363	20	27	9
160	171	616	57	76	6
160	241	869	112	151	5
160	311	1122	187	251	5
200	152	545	17	28	9
200	270	973	54	87	6
200	389	1400	112	179	5
200	507	1828	190	305	4
250	213	765	15	24	9
250	398	1434	51	83	7
250	584	2102	108	178	5
250	769	2771	188	310	5
315	310	1115	11	16	10
315	633	2278	46	66	7
315	956	3440	104	150	5
315	1278	4603	186	269	4
400	501	1803	11	14	10
400	1037	3732	46	59	7
400	1573	5662	106	135	5
400	2108	7591	190	243	4

① Basic unit
② Basic unit with secondary silencer TS

Volume flow rate ranges and minimum differential pressure values
Control component dynamic measurement principle - q v As standard
Attachment XB0, LN0, LK0

NS	qv [l/s]	qv [m³/h]	Δpstmin [Pa]		Δqv [±%]
NS	qv [l/s]	qv [m³/h]	①	②	Δqv [±%]
125	59	210	19	24	9
125	93	333	46	60	7
125	126	455	86	112	6
125	160	578	139	181	5
160	101	363	20	27	9
160	153	551	45	61	7
160	206	740	82	109	6
160	257	928	128	172	5
200	152	545	17	28	9
200	241	867	43	69	7
200	331	1190	81	130	6
200	420	1512	130	209	5
250	213	765	15	24	9
250	354	1274	40	66	7
250	495	1783	78	128	6
250	636	2292	129	212	5
315	310	1115	11	16	10
315	559	2012	36	52	7
315	808	2910	75	108	6
315	1057	3807	127	184	5
400	501	1803	11	14	10
400	915	3295	36	46	7
400	1330	4787	76	97	6
400	1744	6279	130	166	5

① Basic unit
② Basic unit with secondary silencer TS

Quick sizing table for sound pressure levels

The quick sizing tables are based on generally accepted attenuation levels. If the sound pressure level exceeds the required level, a larger air terminal unit and/or a silencer or acoustic cladding is required. For more information on the acoustic data, see basic information and nomenclature.

Quick sizing table for air-regenerated noise L_PA
Controller including sound attenuator variants
(Total flow rate range of the type)

NS	qv [l/s]	qv [m³/h]	250 Pa		500 Pa
NS	qv [l/s]	qv [m³/h]	①	②	①	②
125	59	210	27	17	30	20
125	104	373	34	24	37	26
125	149	536	39	28	41	30
125	194	699	42	n.V.	44	33
160	101	363	29	19	33	23
160	171	616	35	25	39	29
160	241	869	39	29	42	32
160	311	1122	42	n.V.	45	34
200	152	545	27	17	31	21
200	270	973	31	21	35	25
200	389	1400	35	25	38	28
200	507	1828	38	n.V.	41	30
250	213	765	17	< 15	20	< 15
250	398	1434	26	16	28	18
250	584	2102	31	22	33	23
250	769	2771	35	n.V.	37	28
315	310	1115	18	< 15	21	< 15
315	633	2278	28	17	31	19
315	956	3440	34	23	37	24
315	1278	4603	39	n.V.	41	27
400	501	1803	15	< 15	17	< 15
400	1037	3732	27	16	29	17
400	1573	5662	34	25	36	25
400	2108	7591	40	n.V.	41	n.V.

Air-regenerated noise L_PA [dB(A)] in the case of total differential pressure Δ_pt of 250 or 500 Pa

① Basic unit

② Basic unit with secondary silencer TS

n.a.: specified total differential pressure Δ_pt is lower than the minimum differential pressure Δ_pt,min

Quick sizing table for case-radiated noise L_PA

Controller including acoustic cladding variant
(Total flow rate range of the type)

NS	qv [l/s]	qv [m³/h]	250 Pa		500 Pa
NS	qv [l/s]	qv [m³/h]	①	②	①	②
125	59	210	32	24	38	29
125	104	373	36	29	42	34
125	149	536	40	32	45	37
125	194	699	43	36	48	40
160	101	363	41	32	47	38
160	171	616	44	36	49	42
160	241	869	46	39	51	44
160	311	1122	48	42	53	47
200	152	545	36	28	42	33
200	270	973	40	34	46	38
200	389	1400	44	38	49	42
200	507	1828	47	42	52	45
250	213	765	29	23	34	28
250	398	1434	35	29	41	34
250	584	2102	40	34	45	38
250	769	2771	44	38	48	41
315	310	1115	37	31	44	38
315	633	2278	41	37	48	43
315	956	3440	44	41	50	47
315	1278	4603	47	45	52	50
400	501	1803	30	26	37	32
400	1037	3732	38	33	44	39
400	1573	5662	43	38	48	43
400	2108	7591	47	43	51	47

Case-radiated noise L_PA [dB(A)] in the case of total differential pressure Δ_pt of 250 or 500 Pa

① Basic unit

② Basic unit with acoustic cladding

n.a.: specified total differential pressure Δ_pt is lower than the minimum differential pressure Δ_pt,min

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.

Specification text

Rectangular VAV dual duct terminal units for dual duct systems with variable and constant volume flows, available in 6 nominal sizes. Connecting spigots for warm and cold air arranged at an angle of 90°. Up to nominal size 200, an angle of 60° is also possible and is therefore ideal for the refurbishment of older systems with dual duct units. High control accuracy (even with upstream bend R = 1D). Ready-to-commission unit which consists of the mechanical parts and the electronic control components. Each unit contains two averaging effective pressure sensors for volume flow rate measurement, one in the cold air flow and one in the total air flow, two damper blades, and an integral sound attenuator. Factory-mounted control components complete with wiring and tubing. Effective pressure sensor with 3 mm measuring holes, hence resistant to contamination. Spigot on the fan end with groove for double lip seal, suitable for ducts according to EN 1506 or EN 13180. Room end suitable for the connection of flanges. Two baffle plates, one fitted after each damper blade for optimum acoustic and aerodynamic performance. Casing with acoustic and thermal insulation. Position of the damper blade can be seen from the outside at the shaft extension. Closed blade air leakage to EN 1751, class 4 (nominal sizes 125 and 160, class 3). Casing leakage according to EN 1751, class B. Meets the hygiene requirements of VDI 6022, EN 16798, Part 3, VDI 3803 as well as DIN 1946 Part 4.

Special features

Integral effective pressure sensor with 3 mm measuring holes (resistant to dust and pollution)
Integral attenuator with at least 26 dB insertion loss at 250 Hz
Factory set-up or programming and aerodynamic function testing
Volume flow rate can later be measured and adjusted on site; additional adjustment device may be necessary
Inspection access according to VDI 6022

Materials and surfaces

Casing and damper blade made of galvanised sheet steel
Damper blade seal made of TPE plastic
Lining is mineral wool
Aluminium sensor tubes
Plastic plain bearings
Shaft and casing made of galvanised steel

Mineral wool:

To EN 13501, fire rating class A1, non-combustible
RAL quality mark RAL-GZ 388
Non-hazardous to health thanks to being highly biosoluble in accordance with the Ordinance on Hazardous Substances and Note Q of the European Directive (EC) No. 1272/2008
Faced with glass fibre fabric as protection against erosion through airflow velocities of up to 20 m/s
Inert to fungal and bacterial growth

Connection

Spigot with groove for double lip seal, suitable for ducts according to EN 1506 or EN 13180
Room end suitable for the connection of flanges

Technical data

Nominal sizes: 125 to 400 mm
Volume flow rate range: 59 – 2108 l/s or 210 – 7591 m³/h
Volume flow rate control range: approx. 30 – 100 % of the nominal volume flow rate
Minimum differential pressure: up to 202 Pa (without secondary silencer TS)
Maximum differential pressure: 1000 Pa

Specification text for attachment

Variable volume flow control with electronic Compact controller to switch an external control signal and an actual value signal for integration into the central BMS.

Supply voltage 24 V AC/DC
Signal voltages 0 – 10 V DC or 2 – 10 V DC
Possible override controls with external, volt-free switches: CLOSE, OPEN, qᵥmin and qᵥmax
Volume flow rate control range: approx. 30 – 100 % of the nominal volume flow rate

Sizing data

qᵥ_warm,min – qᵥ_warm,max (m³/h)
qᵥ_cold,min – qᵥ_cold,max (m³/h)
Δ_pt Total differential pressure [Pa]
L_PA Air-regenerated noise [dB(A)]
L_PA Case-radiated noise [dB(A)]

Variants, Attachments, Dimensions and weight, Product details

VAV dual duct terminal unit, variant TVM

VAV terminal unit for the control of variable supply air volume flows
Connecting spigots for warm and cold air arranged at an angle of 90°

Material

Standard construction

Order code detail	Part	Material
–	Casing	Galvanised sheet steel
	Effective pressure sensor (cold)	Aluminium tube
	Effective pressure sensor (total)	Aluminium
	Damper blade	Galvanised sheet steel
	Damper blade seal	Thermoplastic elastomer (TPE)
	Shaft and linkage	Galvanised steel
	Plain bearings	Thermoplastic elastomer (TPE)

With acoustic cladding (optional)

Order code detail	Part	Material
D	Lining	Mineral wool to EN 13501, fire rating class A1, non-combustible
	Acoustic cladding casing	Galvanised sheet steel
	Insulation of structure-borne noise	Polyethylene, PE

Option double lip seal

Order code detail	Part	Material
D2	Double lip seal	Rubber, EPDM

Control unit without acoustic cladding (TVM)

1 Inspection access
2 Keep clear to provide access to attachments

Control unit with acoustic cladding (TVM-D)

Control unit with spigot arrangement 60° (TVM-S)

Control unit with acoustic cladding and spigot arrangement 60° (TMV-S-D)

Dimensions/weight for TVM

NS	B	H	L	∅D	A	A₁	B₁	B₃	C	C₁	H₁	H₃	L₁	W	kg
125	198	152	1355	124	150	170	232	300	125	240	186	236	1205	265	28
160	308	152	1455	159	200	150	342	410	145	295	186	236	1255	265	34
200	458	210	1790	199	200	125	492	560	170	350	244	281	1590	265	50
250	598	201	2015	249	250	160	632	700	200	415	235	311	1765	540	65
315	798	252	2090	314	250	130	832	900	240	535	286	361	1840	540	90
400	898	354	2575	399	250	180	932	1000	290	625	388	446	2325	540	130

Dimensions/weight for (TVM-D)

NS	B	H	L	∅D	A	A₁	B₁	B₃	C	C₁	H₁	H₃	L₁	W	kg
125	198	152	1355	124	110	130	232	380	165	280	186	316	1245	305	42
160	308	152	1455	159	160	110	342	490	185	335	186	316	1295	305	51
200	458	210	1790	199	160	85	492	640	210	390	244	361	1630	305	78
250	598	201	2015	249	210	120	632	780	240	455	235	391	1805	580	105
315	798	252	2090	314	210	90	832	980	280	575	286	441	1880	580	140
400	898	354	2575	399	210	140	932	1080	330	665	388	526	2365	580	200

Dimensions/weight for (TVM-S)

NS	B	H	L	∅D	A	B₁	B₃	B₄	H₁	H₃	L₁	W	kg
125	198	152	1385	124	245	232	300	525	186	236	1190	173	30
160	308	152	1630	159	335	342	410	690	186	236	1360	173	35
200	458	210	1920	199	340	492	560	800	244	281	1660	173	50

Dimensions/weight for (TVM-S-D)

NS	B	H	L	∅D	A	B₁	B₃	B₄	H₁	H₃	L₁	W	kg
125	198	152	1385	124	225	232	380	525	186	316	1215	160	45
160	308	152	1630	159	295	342	490	690	186	316	1410	180	55
200	458	210	1920	199	300	492	640	800	244	361	1710	180	80

Bend

A bend with a centre line curvature radius of at least 1D – without an additional straight duct section upstream of the VAV terminal unit – has only a negligible effect on the volume flow rate accuracy.

Installation and commissioning

Horizontal (return edges of the casing with suspension holes at the top) and vertical installation orientation
Spigots for warm and cold air arranged at an angle of 60° (TVM-S) or 90° (TVM)
Return edges of the casing with drilled holes suitable for threaded rods

Upstream conditions

The volume flow rate accuracy Δqᵥ applies to a straight upstream section of the duct. Bends, junctions or a narrowing or widening of the duct cause turbulence that may affect measurement. Duct connections, e.g. branches off the main duct, must comply with EN 1505. Some installation situations require straight duct sections upstream. The upstream conditions apply primarily to the duct connection at the cold air spigot. Since the hot air spigot does not contain a sensor, the upstream section here has no effect on the volume flow rate accuracy; however, unfavourable upstream sections can also lead to increased sound pressure levels.

VARYCONTROL control components

Attachment	Controlled variable	Interface	Effective pressure transducer	Actuator	Manufacturer
Compact controller, dynamic
BC0	qv	0 – 10 V or 2 – 10 V or MP bus interface	integral	Slow running integral	②
LN0	qv	0 – 10 V or 2 – 10 V	integral	Slow running integral	⑤
LK0	qv	KNX interface	integral	Slow running integral	⑤
XB0	qv	0 – 10 V or 2 – 10 V	integral	Slow running integral	①
BM0	qv	Modbus RTU/BACnet MS/TP	integral	Slow running integral	②
BM0-J6	qv	Modbus RTU/BACnet MS/TP with RJ12 socket (for X-AIRCONTROL)	integral	Slow running integral	②

qv Volume flow rate
② TROX/Belimo, ③ TROX/Gruner, ⑤ Siemens; note restricted availability. LN0 and LK0 not available for variant TVM-S-D

Descărcări fişiere

informaţii produs

Basic information and nomenclature - VAV terminal units

Basic-information-and-nomenclature_VAV-terminal-units_PD_2022_02_25_DE_en Basic information and nomenclature 490 KB pdf
Product data sheet Type TVM

TVM_PD_2022_02_22_DE_en Product data sheet 760 KB pdf
Product data sheet XB0

XB0_PD_2025_02_28_DE_en Product data sheet 410 KB pdf
Product data sheet control components BC0

BC0_PD_2022_09_15_DE_en Product data sheet 840 KB pdf
Product data sheet control components BM0

BM0_PD_2022_09_15_DE_en Product data sheet 570 KB pdf
Product data sheet control components BM0-J6

BM0-J6_PD_2022_02_21_DE_en Product data sheet 23 MB pdf
Type TVM

K5 – 1.1 – 99 - RO 2,1 MB pdf

certificate

Certificate concerning statistical leakage tests

LC_v2_2024_10_DE_en Certificate 650 KB pdf
Certificate concerning statistical leakage tests

LC_v1_2024_10_DE_en Certificate 660 KB pdf
Declaration of conformity or declaration of incorporation Type TVM

CE_VVS_DE_en Declaration of conformity or declaration of incorporation 70 KB pdf
Declaration of hygiene conformity TVM

TVM_HC_2024_05_DE_en Hygiene certificate 1,3 MB pdf
Environmental product Declaration TVM

TVM_EPD_2024_12_DE_en Environmental product Declaration 990 KB pdf

manuale de operare

Assembly and operating instructions TVM

TVM_IOM_CD10013_V1_2024_01_GB_en 2,1 MB pdf

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Spigot arrangement	90°
Acoustic cladding	None
Nominal size	160 mm
Attachments (control component)	Compact controller
Operating mode	Variable
Signal voltage range	0 – 10 V DC
Operating values warm	qᵥ_warm,min = 750 m³/hqᵥ_warm,max = 1122 m³/h
Operating values cold	qᵥ_cold,min = 0 m³/hqᵥ_cold,max = 1122 m³/h


Volume flow rate range	50 – 2108 l/s or 210 – 7591 m³/h
Volume flow rate control range	Approx. 30 to 100 % of the nominal volume flow rate
Minimum differential pressure	Up to 202 Pa (without secondary silencer TS)
Maximum differential pressure	1000 Pa
Operating temperature	10 to 50 °C

For dual duct systems

General information

Informaţii tehnice

Function, Technical data, Quick sizing, Specification text, Order code, Related Products

Variants, Attachments, Dimensions and weight, Product details

Descărcări fişiere

informaţii produs

Basic information and nomenclature - VAV terminal units

Product data sheet Type TVM

Product data sheet XB0

Product data sheet control components BC0

Product data sheet control components BM0

Product data sheet control components BM0-J6

Type TVM

certificate

Certificate concerning statistical leakage tests

Certificate concerning statistical leakage tests

Declaration of conformity or declaration of incorporation Type TVM

Declaration of hygiene conformity TVM

Environmental product Declaration TVM

manuale de operare

Assembly and operating instructions TVM

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