TVRK

VAV terminal unit, variant

VAV terminal unit for variable volume flow control
With flanges to make detachable connections to the ductwork

TVRK

For contaminated air

Plastic circular VAV terminal units for aggressive extract air in variable air volume systems

Casing and damper blade made of flame-resistant polypropylene
Slide-out effective pressuresensor allows for easy cleaning
Suitable for the control of volume flow rate, room pressure or duct pressure
Electronic control components for different applications (Universal and LABCONTROL)
Suitable for airflow velocities up to 13 m/s
Closed blade air leakage to EN 1751, class 3
Casing air leakage to EN 1751, class C

Optional equipment and accessories

With flanges on both ends
Matching flanges for both ends
Plastic secondary silencer Type CAK for the reduction of air-regenerated noise

General information

Application

Circular VAV terminal units for use in ventilation and air conditioning systems
VAV terminal units made from plastic, suitable for contaminated air
For controlling, restricting or shutting off airflows, preferably extract air flows
Closed-loop volume flow control using an external power supply
For variable or constant volume flow systems
Shut-off by means of switching (by others)
Can also be used for duct or room pressure control with suitable control components

Special features

Slide-out integral effective pressure sensor with 3 mm measuring holes (resistant to contamination)
Factory set-up or programming and aerodynamic function testing
Parameters can also later be set on the control component; an additional adjustment device may be necessary

Nominal sizes

125, 160, 200, 250, 315, 400

Variants

TVRK: VAV terminal unit
TVRK-FL: VAV terminal unit with flanges on both ends

Parts and characteristics

Ready-to-commission unit which consists of mechanical parts and control components.
Averaging effective pressure sensor for volume flow rate measurement; can be removed for cleaning
Damper blade
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

Universal controller: controller, effective pressure transducer, and actuators for special applications
LABCONTROL: control components for air management systems

Accessories

Matching flanges for both ends, including seals

Useful additions

Plastic secondary silencer Type CAK for demanding acoustic requirements

Construction features

Circular casing
Spigot suitable for ducts according to DIN 8077
Both spigots with the same diameter
Position of the damper blade indicated externally at shaft extension

Materials and surfaces

Casing and damper blade made of flame-resistant polypropylene (PPs)
Effective pressure sensor and plain bearings made of polypropylene (PP)
Damper blade seal made of chloroprene rubber (CR)
Stainless steel shaft, material no. 14104

Standards and guidelines

Fulfils the hygiene requirements of

EN 16798, Part 3
VDI 6022, Sheet 1
DIN 1946, Part 4
For other applicable standards and guidelines refer to the hygiene certificate

Casing leakage

EN 1751, Class C

Closed blade air leakage

EN 1751, Class 3
Meets the general 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
Zero point correction of the static effective pressure transducer should be carried out once per year (recommendation)

Technical information

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

Schematic illustration of the TVRK

① Effective pressure sensor

② Casing

③ Actuator

④ Damper blade

⑤ Control components, e.g. a Universal controller

The VAV terminal unit is fitted with an effective pressure sensor for measuring the volume flow rate.

The control components (attachments) include an effective pressure transducer that transforms the effective pressure into an electric signal, a controller and an actuator as individual components (Universal or LABCONTROL).

For most applications, the setpoint value comes from an external setpoint adjuster.

The controller compares the actual value with the setpoint value and alters the control signal of the actuator if there is a difference between the two values.

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. It must be ensured that for all operating conditions and for all terminal units a sufficient pressure differential is applied to each controller (Δ_pstat,min). 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 for static pressure measurements
Attachment: XD0, XD4, BP3, BPG, BPB, BB3, BBB, BUSN, BUSNF, BUSS, TUN, TUNF, TUS, TUSD, ELAB

NS	qv [l/s]	qv [m³/h]	Δpstmin [Pa]				Δqv [±%]
NS	qv [l/s]	qv [m³/h]	①	②	③	④	Δqv [±%]
125	20	70	2	2	2	2	10
125	59	213	10	12	13	15	7
125	99	356	28	32	36	40	6
125	138	499	54	62	70	77	6
160	34	122	2	2	2	2	10
160	104	373	12	13	14	15	7
160	174	625	32	35	38	42	6
160	243	876	62	68	75	81	5
200	55	196	2	2	2	2	10
200	167	601	11	12	12	13	7
200	279	1005	29	31	34	36	6
200	391	1410	56	61	66	71	5
250	85	306	1	1	2	2	10
250	261	939	9	10	10	11	7
250	437	1572	24	26	28	30	6
250	612	2205	47	51	55	59	5
315	139	500	1	1	1	1	10
315	426	1533	6	6	7	8	7
315	713	2565	16	17	19	21	6
315	999	3598	30	33	37	40	5
400	231	830	1	1	1	1	10
400	707	2546	4	5	5	5	7
400	1184	4262	11	12	13	14	6
400	1660	5978	21	24	26	28	5

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

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 silencer
(total flow rate range of type)

NS	qv [l/s]	qv [m³/h]	150 Pa				500 Pa
NS	qv [l/s]	qv [m³/h]	①	②	③	④	①	②	③	④
125	20	70	35	20	< 15	< 15	41	24	18	< 15
125	59	213	46	32	27	22	52	37	31	26
125	99	356	51	38	33	29	57	43	37	32
125	138	499	54	42	37	33	60	47	41	37
160	34	122	36	23	18	15	42	27	22	17
160	104	373	47	35	30	27	53	40	34	29
160	174	625	51	39	35	31	57	44	39	34
160	243	876	53	41	37	34	58	47	41	37
200	55	196	41	28	23	19	51	40	35	30
200	167	601	44	32	27	23	55	43	38	34
200	279	1005	44	32	27	24	55	43	38	34
200	391	1410	44	32	29	28	55	43	38	34
250	85	306	41	29	23	18	52	40	34	29
250	261	939	44	33	28	24	55	44	39	34
250	437	1572	44	35	30	26	55	45	40	36
250	612	2205	44	36	32	29	55	45	41	37
315	139	500	43	33	28	24	49	38	33	29
315	426	1533	47	39	34	31	53	44	40	36
315	713	2565	50	42	37	34	56	47	43	40
315	999	3598	51	43	39	36	57	49	45	42
400	231	830	40	32	28	25	46	39	35	31
400	707	2546	45	38	35	32	52	45	41	38
400	1184	4262	48	41	38	35	54	48	44	41
400	1660	5978	49	43	40	37	56	49	46	43

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

① Basic unit

② Basic unit with circular silencer CAK, insulation thickness 50 mm, length 500 mm

③ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1000 mm

④ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1500 mm

n.a.: The specified static differential pressure Δ_pst is lower than the minimum differential pressure Δ_{pst min}.

Quick sizing table for case-radiated noise L_PA

NS	qv [l/s]	qv [m³/h]	150 Pa	500 Pa
125	20	70	18	30
125	59	213	26	38
125	99	356	29	41
125	138	499	32	44
160	34	122	19	30
160	104	373	29	40
160	174	625	34	44
160	243	876	37	47
200	55	196	30	41
200	167	601	33	45
200	279	1005	35	46
200	391	1410	36	47
250	85	306	28	40
250	261	939	33	45
250	437	1572	36	48
250	612	2205	37	49
315	139	500	31	40
315	426	1533	39	48
315	713	2565	43	51
315	999	3598	45	54
400	231	830	28	36
400	707	2546	38	46
400	1184	4262	42	51
400	1660	5978	45	54

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

n.a.: The specified static differential pressure Δ_pst is lower than the minimum differential pressure Δ_{pst min}.

Note:

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

Circular VAV terminal units made of PPs plastic, for variable and constant air volume systems, suitable for extract air, available in 6 nominal sizes. 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 an averaging effective pressure sensor for volume flow rate measurement, and a damper blade. Factory mounted control components complete with wiring and tubing Effective pressure sensor with 3 mm measuring holes, hence resistant to contamination. Position of the damper blade indicated externally at shaft extension. The damper blade is factory set to open position, which allows a ventilation airflow even without control; this does not apply to variants with defined safe position NC (normally closed). Closed blade air leakage to EN 1751, class 3. Casing air leakage to EN 1751, class B. Meets the hygiene requirements of EN 16798, Part 3, of VDI 6022, Sheet 1, and of DIN 1946, Part 4.

Special features

Slide-out integral effective pressure sensor with 3 mm measuring holes (resistant to contamination)
Factory set-up or programming and aerodynamic function testing
Parameters can also later be set on the control component; an additional adjustment device may be necessary

Materials and surfaces

Casing and damper blade made of flame-resistant polypropylene (PPs)
Differential pressure sensor and plain bearings made of polypropylene (PP)
Damper blade seal made of chloroprene rubber (CR)

Connection

Spigot, suitable for ducts according to DIN 8077

Technical data

Nominal sizes: 125 to 400 mm
Volume flow rate range: 20 – 1666 l/s or 70 – 5978 m³/h
Volume flow rate control range: approx. 12 – 100 % of the nominal volume flow rate
Minimum differential pressure: up to 62 Pa
Maximum differential pressure: 1000 Pa

Specification text for attachment

Variable volume flow control with electronic Universal controller for applying a reference value and capturing an actual value to be integrated with 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 switches using volt-free contacts: CLOSE, OPEN, q_ᵥmin and q_ᵥmax

Sizing data

q_ᵥ _______________________ [m³/h]
Δ_pst _______________________

[Pa]

Air-regenerated noise

L_PA _______________________

[dB(A)]

Case-radiated noise

L_PA _______________________

[dB(A)]

Order code for volume flow control (with VARYCONTROL attachment)

TVRK

–

160

XD4

200 – 900 [m³/h]

1 Type
TVRK
VAV terminal unit, plastic

2 Duct connectionNo entry: spigot
FL Flanges on both ends

3 Nominal size [mm]
125160200250315400

4 AccessoriesNo entry: none
GK Matching flanges for both ends

5 Attachments (control components)
For example
XD4 Universal controller (VARYCONTROL) with static effective pressure transducer

7 Operating mode
F Constant value (one setpoint value)
V Variable (setpoint value range)

8 Signal voltage range
For the actual and setpoint value signals
0 0 – 10 V DC
2 2 – 10 V DC

9 Operating values for factory setting
Volume flow rates [m³/h or l/s]
q_ᵥconst. (with operating mode F)
q_ᵥmin– q_ᵥmax(with operating mode V)

10 Damper blade position
Only with spring return actuators
NO Power off to OPEN
NC Power off to CLOSE

Order example: TVRK/160/XD4/V2/200–900 m³/h/NO

Duct connection	Spigot
Nominal size	160 mm
Attachments (control components)	VARYCONTROL Universal controller with static effective pressure transducer and safe position function with spring return actuator
Operating mode	Variable operation
Signal voltage range	2 – 10 V DC
Operating values	q_vmin = 200 m³/hq_vmax = 900 m³/h
Damper blade position	NO power off to OPEN

,
Order code for volume flow control (with TROX UNIVERSAL attachment)

TVRK

–

160

TUNF

UMZ

…

1 Type
TVRK VAV terminal unit, plastic

2 Duct connection
No entry required: Spigot
FL Flanges on both ends

3 Nominal size [mm]
125, 160, 200, 250, 315, 400

4 Accessories
No entry required: None
GK Matching flanges both sides

5 Attachments (control components)
TROX UNIVERSAL controller variants:
TUN Actuator (150 s)
TUNF Spring return actuator (150 s)
TUS Fast-running actuator (3 s)
TUSD Fast-running actuator (3 s), with digital communication interface (TROX HPD)

6 Equipment function
Room control
RE Extract air control (Room Extract)

7 Volume flow rate setting
M Master (RMF)
S Slave
F Constant flow rate controller

8 Signal voltage range
0 0 – 10 V DC
2 2 – 10 V DC

9 Expansion of attachments
Option 1: Power supply
No entry required: 24 V AC/DC
T EM-TRF for 230 V AC
U EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS)

Option 2: Digital communication interface
No entry required: None
B EM-BAC-MOD-01 for BACnet MS/TP
M EM-BAC-MOD-01 for Modbus RTU
I EM-IP: EM-IP for BACnet/IP, Modbus/IP and web server
R EM-IP with real time clock

Option 3: Automatic zero point correction
No entry required: None
Z EM-AUTOZERO with solenoid valve

10 Operating values [m³/h or l/s]
Master
q_ᵥmin: Minimum volume flow rate
q_ᵥmax: Maximum volume flow rate
q_{ᵥconst_Supply air}: Constant supply air
q_{ᵥconst_Extract air}: Constant extract air
q_ᵥDiff: Supply air/extract air difference

Constant value
q_ᵥconst: constant volume flow rate

Slave
No entry required

11 Damper blade position
Only with control component TUNF (spring return actuator)
NO Power off to OPEN
NC Power off to CLOSE

Useful additions
Room control panel
BE-LCD 40-character display

Order example: TVRK-FL/125/TUN/RE/S/0/UZ/

Flange	both ends
Nominal size	125 mm
Accessories	Without
Attachments (control components)	TROX UNIVERSAL controller, actuator run time 150 s
Equipment function	Extract air control
Volume flow rate setting	Slave
Signal voltage range	0 – 10 V DC
Expansion modules	With expansion module EM-TRF-USV,transformer for 230 V AC and uninterruptible power supply (UPS)With expansion module EM-AUTOZERO,solenoid valve for automatic zero point correction
Operating values	No entry required (slave)

,
Order code for differential pressure control (with VARYCONTROL attachment)

TVRK

–

160

XF4

PDE

500 Pa

1 Type
TVRK
VAV terminal unit, plastic

2 Duct connection
No entry: spigot
FL Flanges on both ends

3 Nominal size [mm]
125160200250315400

4 Accessories
No entry: none
GK Matching flanges for both ends

5 Attachments (control components)
For example
XF0 Compact controller for duct pressure
XF4 Universal controller for duct pressure (VARYCONTROL)

6 Equipment function/Installation location
PDS Duct pressure control, supply air
PDE Duct pressure control, extract air
PRS Room pressure control, supply air
PRE Room pressure control, extract air

7 Operating mode
F Constant value (one setpoint value)
V Variable (setpoint value range)

8 Signal voltage range
For the actual and setpoint value signals
0 0 – 10 V DC
2 2 – 10 V DC

9 Operating values for factory setting
For duct pressure control, enter the differential pressure [Pa] as an absolute value.
∆_pconst. (with operating mode F)
∆_pmin - ∆p_max (with operating mode V)

10 Damper blade position
Only with spring return actuators
NO Power off to OPEN
NC Power off to CLOSE

Order example: TVRK/315/XF0/PDE/F0/550 Pa

Duct connection	Spigot
Nominal size	315 mm
Attachments (control components)	Compact controller, static, duct pressure control
Equipment function/installation location	Duct pressure control, extract air
Operating mode	Constant value control
Signal voltage range	0 – 10 V DC
Operating value	∆_pconst. = 550 Pa

,
Order code for differential pressure control (with TROX UNIVERSAL attachment)

TVRK

–

160

TUNF

PRE

MFP

UMZ

…

1 Type
TVRK VAV terminal unit, plastic

2 Duct connection
No entry required: Spigot
FL both ends

3 Nominal size [mm]
125, 160, 200, 250, 315, 400

4 Accessories
No entry required: None
GK Matching flanges both sides

5 Attachments (control components)
TROX UNIVERSAL controller variants:
TUN Actuator (150 s)
TUNF Spring return actuator (150 s)
TUS Fast-running actuator (3 s)
TUSD Fast-running actuator (3 s), with digital communication interface (TROX HPD)

6 Equipment function
Pressure control
PRE Room pressure control, extract air
PDE Duct pressure control, extract air

7 Effectivepressure setting
MFP Master, constant pressure control
MVP Master, variable differential pressure control
SFP Slave, constant pressure control
SVP Slave, variable differential pressure control

8 Signal voltage range
0 0 – 10 V DC
2 2 – 10 V DC

9 Expansion of attachments
Option 1: Power supply
No entry required: 24 V AC/DC
T EM-TRF for 230 V AC
U EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS)

Option 2: Digital communication interface
No entry required: None
B EM-BAC-MOD-01 for BACnet MS/TP
M EM-BAC-MOD-01 for Modbus RTU
I EM-IP: EM-IP for BACnet/IP, Modbus/IP and web server
R EM-IP with real time clock

Option 3: Volume flow rate measurement
No entry required: None
V EM-V Volume flow rate measurement for differential pressure control

Option 4: Automatic zero point correction
No entry required: None
Z EM-AUTOZERO with solenoid valve (only with V)

10 Operating values [Pa, m³/h or l/s]
Slave SVP
Δ_pmin: Minimum differential pressure
Δ_pmax: Max. differential pressure

Slave SFP
Δ_pconst: Constant differential pressure

Master MFP and MVP – same as slave, but additionally:
q_ᵥmin: Minimum volume flow rate
q_ᵥmax: Maximum volume flow rate
qᵥ_{const_CLOSED}: Constant supply air
qᵥ_{const_Exhaust}: Constant extract air
qᵥ_Diff: Supply air/extract air difference

11 Damper blade position
Only with control component TUNF (spring return actuator)
NO Power off to OPEN
NC Power off to CLOSE

Useful additions
Room control panel
BE-LCD 40-character display
Differential pressure transducers for room pressure control or duct pressure control to be ordered separately, e.g.:
PT-699 for room pressure control
PT-699-DUCT for duct pressure control, including tube and pressure tap

Order example: TVRK/125/TUN/PDE/SVP/0/TVZ/100/350 Pa

Duct connection	Spigot
Nominal size	125 mm
Attachments (control components)	TROX UNIVERSAL controller, actuator run time 150 s
Equipment function	Duct pressure control, extract air
Effective pressure setting	Slave, variable differential pressure control
Signal voltage characteristics	0 – 10 V DC
Expansion modules	With expansion module EM-TRF, transformer for 230 V AC supply With expansion module EM-V, for volume flow rate measurement with differential pressure control With expansion module EM-AUTOZERO, solenoid valve for automatic zero point correction
Operating values	∆_pmin = 100 Pa ∆_pmax = 350 Pa

,
Order code for room control (with EASYLAB attachment)

TVRK

–

160

ELAB

UMZ

LAB

…

1 Type
TVRK
VAV terminal unit, plastic

2 Duct connection
No entry: spigot
FL Flanges on both ends

3 Nominal size [mm]
125160200250315400

4 Accessories
No entry: none
GK Matching flanges both sides

5 Attachments (control components)
ELAB EASYLAB controller TCU3

6 Actuators
S Fast-running actuator (3 s)
SD Fast-running actuator (3 s), with digital communication interface (TROX HPD)

8 Equipment function
Room control
RE Extract air control (Room Exhaust)
PC Differential pressure control (Pressure Control)

9 Expansion modules
Option 1: Power supplyNo entry: 24 V AC/DC
T EM-TRF for 230 V AC
U EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS)
Option 2: Digital communication interface
No entry: none
B EM-BAC-MOD-01 for BACnet MS/TP
M EM-BAC-MOD-01 for Modbus RTU
I EM-IP for BACnet/IP, Modbus/IP and web server
R EM-IP with real time clock
Option 3: Automatic zero point correction
No entry: none
Z EM-AUTOZERO Solenoid valve for automatic zero point correction

10 Additional functions
Without room management function
LAB Extract air led system (laboratories)
CLR Supply air led system (clean rooms)
Room management function is active
LAB-RMF Extract air led system
CLR-RMF Supply air led system

11 Operating values [m³/h or l/s, Pa]
(only required when room management function is active)
Total extract air/supply air of room:
q_v1: Standard mode
q_v2: Reduced operation
q_v3: Increased operation
q_v4: Constant supply air
q_v5: Constant extract air
q_v6: Supply air/extract air difference
Δ_pset: Setpoint pressure (only with differential pressure control)
Useful additionsRoom control panel
BE-LCD 40-character display
The differential pressure transducer required for room pressure control (equipment function) has to be ordered separately, e.g.
PT-699 Measuring range ±50 Pa or ±100 Pa
PT-GB604 Measuring range ±100 Pa

Order example: TVRK-FL/160/GK/ELAB/S/RE/LAB

Duct connection	Flanges on both ends
Nominal size	160 mm
Accessories	Matching flanges for both ends
Attachments (control components)	EASYLAB controller TCU3
Actuator	Fast-running (3 s)
Equipment function	Extract air control
Additional function	Room management function has been deactivated Extract air led system
Operating values	not required

,
Order code for single operation (with EASYLAB attachment)

TVRK

–

160

ELAB

–

UMZ

…

1 Type
TVRK
VAV terminal unit, plastic

2 Duct connection
No entry required: Spigot
FL Flanges on both ends

3 Nominal size [mm]
125160200250315400

4 Accessories
No entry required: None
GK Matching flanges both sides

5 Attachments (control components)
ELAB EASYLAB controller TCU3

6 Actuators
S Fast-running actuator (3 s)
SD Fast-running actuator (3 s), with digital communication interface (TROX HPD)

7 Equipment function
Single operation
EC Extract air controller

8 External volume flow rate setting
E0 Voltage signal 0 – 10 V DC
E2 Voltage signal 2 – 10 V DC
2P Switch contacts (provided by others) for 2 switching steps
3P Switch contacts (provided by others) for 3 switching steps
F Volume flow rate constant value, without signalling

9 Expansion modules
Option 1: Power supply
No entry required: 24 V AC/DC
T EM-TRF for 230 V AC
U EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS)
Option 2: Digital communication interface
No entry required: None
B EM-BAC-MOD-01 for BACnet MS/TP
M EM-BAC-MOD-01 for Modbus RTU
I EM-IP for BACnet/IP, Modbus/IP and web server
R EM-IP with real time clock
Option 3: Automatic zero point correction
No entry required: None
Z EM-AUTOZERO Solenoid valve for automatic zero point correction

10 Operating values [m³/h or l/s]
Depending on external volume flow rate setting
E0, E2: q_vmin/q_vmax2P: q_v1/q_v23P: q_v1/q_v2/q_v3F: q_vconst.

Order example: TVRK/200/ELAB/S/EC/E2/600/900

Duct connection	Spigot
Nominal size	200 mm
Attachments (control components)	EASYLAB controller TCU3
Actuator	Fast-running actuator (3 s)
Equipment function	Extract air controller
External volume flow rate setting	Voltage signal 2 – 10 V DC
Operating values	q_vmin = 600 m³/hq_vmax = 900 m³/h

,
Order code for fume cupboard control (with EASYLAB attachment)

TVRK

–

160

ELAB

FH – VS

UMZS

200 – 900 [m³/h]

1 Type
TVRK

VAV terminal unit, plastic

2 Duct connection
No entry: spigot
FL Flanges on both ends

3 Nominal size [mm]
125160200250315400

4 Accessories
No entry: none
GK Matching flanges both sides

5 Attachments (control components)
ELAB EASYLAB controller TCU3

6 Actuators
S Fast-running actuator (3 s)
SD Fast-running actuator (3 s), with digital communication interface (TROX HPD)

7 Equipment function
Fume cupboard control With face velocity transducer
FH-VS Face velocity control strategy
With face velocity transducer and sash distance sensor
FH-VD Optimised face velocity control strategy
With sash distance sensor
FH-DS Linear control strategy
FH-DV Safety-optimised control strategy
With switch contacts (by others) for switching steps
FH-2P Two switching steps
FH-3P Three switching steps
Without signalling
FH-F Volume flow rate constant value control

8 Expansion modules
Option 1: Supply voltage
No entry: 24 V AC/DC
T EM-TRF for 230 V AC
U EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS)
Option 2: Digital communication interface
No entry: none
B EM-BAC-MOD-01 for BACnet MS/TP
M EM-BAC-MOD-01 for Modbus RTU
I EM-IP for BACnet/IP, Modbus/IP and web server
R EM-IP with real time clock
Option 3: Automatic zero point correction
No entry: none
Z EM-AUTOZERO Solenoid valve for automatic zero point correction
Option 4: Lighting
No entry: none
S EM-LIGHT, wired socket for the connection of lighting and for switching the lighting on/off using the control panel
(only in combination with connection EM-TRF or EM-TRF-USV)

9 Operating values [m³/h or l/s]
Depending on the equipment function
FH-VS: q_vmin – q_vmaxFH-VD: q_vmin – q_vmaxFH-DS: q_vmin – q_vmaxFH-DV: q_vmin – q_vmaxFH-2P: q_v1/q_v2FH-3P: q_v1/q_v2 /q_v3FH-F: q_v1
Useful additions
Control panel for fume cupboard controller, for displaying the functions of the control system according to EN 14175BE-SEG-** OLED display
BE-LCD 40-character display

Order example: TVRK/200/ELAB/S/FH-2P/TZ/600/1200

Duct connection	Spigot
Nominal size	200 mm
Attachments (control components)	EASYLAB controller TCU3 with fast-running actuator
Actuator	Fast-running actuator (3 s)
Equipment function	Two switching steps
Expansion module	With expansion module EM-TRF, transformer for 230 V AC supply With expansion module EM-AUTOZERO, solenoid valve for automatic zero point correction
Operating values	q_vmin = 600 m³/h q_vmax = 1200 m³/h

Attachments
Type Compact, static
Type Universal, dynamic
Type EASYLAB TCU3

Additional products
Type CAK

Variants, Attachments, Dimensions and weight

VAV terminal unit, variant TVRK

VAV terminal unit for the control of variable air volume flow rates
Spigot to make connections to the ducting

Terminal unit (TVRK, nominal sizes 125 – 200)...

Notes: Length L depends on the nominal size. Only one of the suitable control components is shown. For exact dimensions see the

section 'Space required for commissioning and maintenance'.

Terminal unit (TVRK, nominal sizes 250 – 400)...

Terminal unit with flange (TVRK-FL, nominal sizes 125 –
200)...

Terminal unit with flange (TVRK-FL, nominal sizes 250 –
400)...

Dimensions and weights of TVRK

NG	L	∅D	B₃	H₃	kg
125	394	125	195	145	4.5
160	394	160	230	180	4.8
200	394	200	270	220	5.2
250	394	250	320	270	6.4
315	594	315	385	335	8.5
400	594	400	470	420	10.7

Dimensions and weight of TVRK-FL

NG	L	∅D	∅D₁	∅D₂	B₃	H₃	T	n	kg
125	400	125	165	185	195	145	8	8	4.7
160	400	160	200	230	230	180	8	8	5.2
200	400	200	240	270	270	270	8	8	5.7
250	400	250	290	320	320	270	8	12	7
315	600	315	350	395	385	335	10	12	9.4
400	600	400	445	475	470	420	10	16	11.9

<strong>Bend</strong>

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

Installation orientation must be as shown on the sticker

Upstream conditions

The volume flow rate accuracy Δq_ᵥ 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.

Downloads

product information

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
FProduct data sheet BURN

BURN_PD_2024_01_17_DE_en Product data sheet 730 KB pdf
Product data sheet BUPN

BUPN_PD_2024_01_16_DE_en Product data sheet 730 KB pdf
Product data sheet Type TVRK

TVRK_PD_2024_11_04_DE_en Product data sheet 16 MB pdf
Product data sheet control components BUPNF

BUPNF_PD_2024_01_17_DE_en Product data sheet 740 KB pdf
Product data sheet control components BUSN

BUSN_PD_2024_01_17_DE_en Product data sheet 750 KB pdf
Product data sheet control components BUSNF

BUSNF_PD_2024_01_17_DE_en Product data sheet 740 KB pdf
Product data sheet control components BUSS

BUSS_PD_2024_01_17_DE_en Product data sheet 710 KB pdf
Product data sheet control components XD0

XD0_PD_2022_01_24_DE_en Product data sheet 520 KB pdf
Product data sheet control components XD4

XD4_PD_2020_02_14_DE_en Product data sheet 38 MB pdf
Product data sheet control components XD4

XD4_PD_2020_02_14_DE_en Product data sheet 920 KB pdf
Product data sheet control components XF0

XF0_PD_2021_06_01_DE_en Product data sheet 490 KB pdf
Product data sheet control components XF4

XF4_PD_2020_02_27_DE_en Product data sheet 38 MB pdf
Product data sheet control components XF4

XF4_PD_2021_06_01_DE_en Product data sheet 890 KB pdf

certificates

Batch certificate DIN-EN-14175-6 - TROX VAV Type TVRK

Batch-certificate_TROX-VAV_TVRK_DIN-EN-14175-6_200429 Certificate 600 KB pdf
Certificate concerning statistical leakage tests

LC_v2_2024_10_DE_en Certificate 650 KB pdf
Declaration of conformity or declaration of incorporation Type TVRK

CE_VVS_DE_en Declaration of conformity or declaration of incorporation 200 KB pdf
Declaration of hygiene conformity Type TVRK

TVRK_HC_2024_05_DE_en Hygiene certificate 1,8 MB pdf

operation manuals

Assembly and operating instructions TVRK

TVRK_IOM_CD10014_V2_2024_01_GB_en 1,6 MB pdf
Installation instructions – Replacing GUAC actuators

IM_2018_01_A00000066402_GUAC-Stellantriebe_tauschen-V1_GB_en 1,4 MB pdf

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For contaminated air

General information

Technical information

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

Variants, Attachments, Dimensions and weight

Downloads

product information

Basic information and nomenclature - VAV terminal units

FProduct data sheet BURN

Product data sheet BUPN

Product data sheet Type TVRK

Product data sheet control components BUPNF

Product data sheet control components BUSN

Product data sheet control components BUSNF

Product data sheet control components BUSS

Product data sheet control components XD0

Product data sheet control components XD4

Product data sheet control components XD4

Product data sheet control components XF0

Product data sheet control components XF4

Product data sheet control components XF4

certificates

Batch certificate DIN-EN-14175-6 - TROX VAV Type TVRK

Certificate concerning statistical leakage tests

Declaration of conformity or declaration of incorporation Type TVRK

Declaration of hygiene conformity Type TVRK

operation manuals

Assembly and operating instructions TVRK

Installation instructions – Replacing GUAC actuators

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