ATEX-compliant parts and units
Application
Special features
Nominal sizes
Classification
Electronic control: Equipment group II
Pneumatic control: Equipment group II
Parts and characteristics
Attachments
Accessories
Technical data
Useful additions
Construction features
Materials and surfaces
Standards and guidelines
Maintenance
Electronic control:
The VAV terminal unit is fitted with a differential pressure sensor for measuring the volume flow rate. The control components (attachments) include a differential pressure transducer that transforms the differential pressure (effective pressure) into an electric signal, a controller, and an actuator. For most applications, the setpoint value comes from a room temperature controller which is installed outside of the potentially explosive atmosphere. 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 connections for the supply voltage and for the voltage signals are made in a terminal box that is suitable for use in potentially explosive atmospheres.
Nominal sizes | 125 – 400 mm |
Volume flow rate range | 15 – 1680 l/s or 54 – 6048 m³/h |
Volume flow rate control range | Approx. 15 to 100 % of the nominal volume flow rate |
Maximum differential pressure | 1000 Pa |
Operating temperature | 10 to 50 °C |
Electronic control with attachment S1S, S1F, S1X or S1Y
S1S | Schischek: Controller ExReg-V-300-A + actuator ExMax-5.10-CY |
S1F | Schischek: Controller ExReg-V-300-A + spring return actuator ExMax-5.10-CYF |
S1X | Schischek: Controller ExReg-V-300-A + actuator ExMax-5.10-CY + accessories ExSwitch and ExBox |
S1Y | Schischek: Controller ExReg-V-300-A + spring return actuator ExMax-5.10-CYF + accessories ExSwitch and ExBox |
Supply voltage | 24 V AC + 15% (24.0 ... 27.6 V AC), 50/60 Hz |
Supply voltage | 24 V DC + 15% (24.0 ... 27.6 V DC) |
IEC protection class | III (protective extra-low voltage) |
EC conformity | ATEX to 2014/34/EU, EMC to 2014/30/EU, low voltage to 2014/35/EU |
For the latest information on the electronic attachments please refer to the technical data in the manufacturer's product documentation:
Schischek GmbH, 90579 Langenzenn, Germany, www.schischek.com, info@schischek.com
For the ExReg-V volume flow controller see the documentation from version V04 of 3 June 2022
Electronic control with attachment TES, TEF, TEX or TEY
Components
TES | TROX controller TCU3 + Schischek components: differential pressure transducer ExCos-P, actuator ExMax-5.10-Y |
TEF | TROX: Controller TCU3 + Schischek components: differential pressure transducer ExCos-P, spring return actuator ExMax-5.10-YF |
TEX | TROX: Controller TCU3 + Schischek components: differential pressure transducer ExCos-P + actuator ExMax-5.10-Y + accessories ExSwitch and ExBox |
TEY | TROX: Controller TCU3 + Schischek components: differential pressure transducer ExCos-P + spring return actuator ExMax-5.10-YF + accessories ExSwitch and ExBox |
Controller TCU3 (TROX)
Supply voltage | 24 V AC ±15% (20.4 .. 27.6 V), 50/60 Hz |
Supply voltage | 24 V DC ±15% (20.4 .. 27.6 V) |
Supply voltage | Optional: 230 V AC mains supply (only with expansion module EM-TRF) |
Power rating | 8 VA |
Protection level | IP 20 |
IEC protection class | III (protective extra-low voltage) if 24 V AC/DC is used |
Installation | In closed rooms, outside of Ex zones (the TCU3 has to be installed away from TVR-Ex) |
EC conformity | EMC to 2014/30/EU |
Differential pressure transducer (Schischek)
Supply voltage | 24 V AC ±20% (19.2 .. 28.8 V), 50/60 Hz |
Supply voltage | 24 V DC ±20% (19.2 .. 28.8 V) |
IEC protection class | I (earthed) |
Protection level | IP 66 |
EC conformity | ATEX to 2014/34/EU, EMC to 2014/30/EU |
Actuator/spring return actuator (Schischek)
Supply voltage | 24... 240 V AC/DC, ±10%, self-adjusting, 50 – 60 Hz ±20% |
Supply voltage | We recommend a mains connection for the actuator |
Power rating | Be sure to see the additional information in the Schischek documentation |
IEC protection class | I (earthed) |
Protection level | IP 66 |
EC conformity | ATEX to 2014/34/EU, EMC to 2014/30/EU, low voltage to 2014/35/EU |
The information given here is just to give you an idea.
For the latest information on the electronic attachments please refer to the technical data in the manufacturer's product documentation:
Schischek GmbH, 90579 Langenzenn, Germany, www.schischek.com, info@schischek.com
Pneumatic
Operating pressure | 1.3 bar ± 0.1 bar |
Air consumption – volume flow control | 50 ln/h |
Air consumption – pressure and volume flow cascade | 100 ln/h |
Control pressure | 0.2 – 1.0 bar |
Maximum pressure | 1.5 bar |
Compressed air | Compressed air for instruments, free of oil, water and dust |
Protection level | IP 42 |
Quick sizing tables provide a good overview of the room sound pressure levels that can be expected. Approximate intermediate values can be interpolated. Precise intermediate values and spectral data can be calculated with our Easy Product Finder design program.
The first selection criteria for the nominal size are the actual volume flow rates qᵥmin and qᵥmax. 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 is required.
Volume flow rate ranges
The minimum differential pressure of VAV terminal units is an important factor in designing the ductwork and in rating the fan including speed control. Sufficient duct pressure must be ensured for all operating conditions and for all control 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. The tables give the minimum and maximum values for a VAV terminal unit. Some control components may only have a limited volume flow rate range. This applies in particular to control components with a static differential pressure transducer. For volume flow rate ranges for all control components refer to our Easy Product Finder design program.
TVR-Ex – electronic, volume flow rate ranges and minimum differential pressures
NS | ① | ② | ③ | ④ | |||
---|---|---|---|---|---|---|---|
qv [l/s] | qv [m3/h] | Δpstmin [Pa] | Δqv [±%] | ||||
125 | 22 | 79 | 5 | 5 | 5 | 5 | 15 |
125 | 60 | 216 | 15 | 20 | 20 | 20 | 7 |
125 | 105 | 378 | 45 | 50 | 55 | 60 | 6 |
125 | 150 | 540 | 90 | 100 | 110 | 115 | 5 |
160 | 35 | 126 | 5 | 5 | 5 | 5 | 15 |
160 | 100 | 360 | 15 | 15 | 15 | 15 | 8 |
160 | 175 | 630 | 35 | 40 | 45 | 45 | 7 |
160 | 250 | 900 | 70 | 80 | 85 | 95 | 5 |
200 | 60 | 216 | 5 | 5 | 5 | 5 | 15 |
200 | 160 | 576 | 15 | 15 | 15 | 15 | 7 |
200 | 280 | 1008 | 35 | 35 | 40 | 40 | 5 |
200 | 405 | 1458 | 65 | 70 | 75 | 80 | 5 |
250 | 90 | 324 | 5 | 5 | 5 | 5 | 15 |
250 | 245 | 882 | 10 | 10 | 10 | 10 | 7 |
250 | 430 | 1548 | 25 | 25 | 30 | 35 | 5 |
250 | 615 | 2214 | 45 | 50 | 55 | 65 | 5 |
315 | 145 | 522 | 5 | 5 | 5 | 5 | 15 |
315 | 410 | 1476 | 5 | 10 | 10 | 10 | 7 |
315 | 720 | 2592 | 15 | 20 | 20 | 20 | 7 |
315 | 1030 | 3708 | 30 | 35 | 40 | 40 | 5 |
400 | 240 | 864 | 5 | 5 | 5 | 5 | 15 |
400 | 670 | 2412 | 5 | 5 | 5 | 5 | 7 |
400 | 1175 | 4230 | 15 | 15 | 15 | 15 | 6 |
400 | 1680 | 6048 | 25 | 30 | 30 | 35 | 5 |
① TVR-Ex
② TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 500 mm
③ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1000 mm
④ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1500 mm
TVR-Ex – pneumatic, volume flow rate ranges and minimum differential pressures
NS | ① | ② | ③ | ④ | |||
---|---|---|---|---|---|---|---|
qv [l/s] | qv [m3/h] | Δpst min [Pa] | Δqv [±%] | ||||
125 | 15 | 54 | 5 | 5 | 5 | 5 | 15 |
125 | 40 | 144 | 10 | 10 | 10 | 10 | 10 |
125 | 70 | 252 | 20 | 25 | 25 | 25 | 7 |
125 | 100 | 360 | 40 | 45 | 50 | 55 | 5 |
160 | 25 | 90 | 5 | 5 | 5 | 5 | 15 |
160 | 75 | 270 | 10 | 10 | 10 | 10 | 10 |
160 | 125 | 450 | 20 | 20 | 25 | 25 | 7 |
160 | 175 | 630 | 35 | 40 | 45 | 45 | 5 |
200 | 40 | 144 | 5 | 5 | 5 | 5 | 15 |
200 | 125 | 450 | 10 | 10 | 10 | 10 | 10 |
200 | 210 | 756 | 20 | 20 | 25 | 25 | 7 |
200 | 300 | 1080 | 40 | 40 | 45 | 45 | 5 |
250 | 60 | 216 | 5 | 5 | 5 | 5 | 15 |
250 | 200 | 720 | 5 | 10 | 10 | 10 | 10 |
250 | 340 | 1224 | 15 | 15 | 20 | 20 | 7 |
250 | 475 | 1710 | 30 | 30 | 35 | 40 | 5 |
315 | 105 | 378 | 5 | 5 | 5 | 5 | 15 |
315 | 330 | 1188 | 5 | 5 | 5 | 5 | 10 |
315 | 555 | 1998 | 10 | 10 | 15 | 15 | 7 |
315 | 775 | 2790 | 20 | 20 | 25 | 25 | 5 |
400 | 170 | 612 | 5 | 5 | 5 | 5 | 15 |
400 | 545 | 1962 | 5 | 5 | 5 | 5 | 10 |
400 | 920 | 3312 | 10 | 10 | 10 | 10 | 7 |
400 | 1300 | 4680 | 15 | 20 | 20 | 20 | 5 |
① TVR-Ex
② TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 500 mm
③ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1000 mm
④ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1500 mm
TVR-Ex, electronic, sound pressure level at differential pressure 150 Pa
NS | pv [l/s] | pv [m3/h] | Air-regenerated noise | Case-radiated noise | |||
---|---|---|---|---|---|---|---|
① | ② | ③ | ④ | ① | |||
LPA [dB(A)] | LPA1 [dB(A)] | LPA2 [dB(A)] | |||||
125 | 22 | 79 | 36 | 25 | 16 | <15 | 16 |
125 | 60 | 216 | 45 | 36 | 30 | 28 | 25 |
125 | 105 | 378 | 49 | 40 | 34 | 32 | 31 |
125 | 150 | 540 | 52 | 41 | 34 | 32 | 35 |
160 | 35 | 126 | 41 | 30 | 22 | 19 | 22 |
160 | 100 | 360 | 47 | 39 | 34 | 31 | 28 |
160 | 175 | 630 | 50 | 42 | 37 | 34 | 32 |
160 | 250 | 900 | 53 | 44 | 39 | 36 | 37 |
200 | 60 | 216 | 41 | 32 | 24 | 22 | 21 |
200 | 160 | 576 | 47 | 40 | 34 | 33 | 29 |
200 | 280 | 1008 | 50 | 44 | 40 | 38 | 32 |
200 | 405 | 1458 | 54 | 45 | 39 | 38 | 38 |
250 | 90 | 324 | 38 | 30 | 24 | 22 | 22 |
250 | 245 | 882 | 47 | 40 | 34 | 32 | 35 |
250 | 430 | 1548 | 48 | 42 | 38 | 37 | 37 |
250 | 615 | 2214 | 52 | 44 | 38 | 37 | 42 |
315 | 145 | 522 | 43 | 36 | 29 | 26 | 29 |
315 | 410 | 1476 | 47 | 42 | 35 | 34 | 39 |
315 | 720 | 2592 | 49 | 44 | 39 | 38 | 42 |
315 | 1030 | 3708 | 53 | 48 | 42 | 41 | 46 |
400 | 240 | 864 | 43 | 36 | 29 | 26 | 31 |
400 | 670 | 2412 | 44 | 38 | 32 | 30 | 37 |
400 | 1175 | 4230 | 47 | 42 | 36 | 35 | 41 |
400 | 1680 | 6048 | 50 | 44 | 38 | 37 | 46 |
① TVR-Ex
② TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 500 mm
③ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1000 mm
④ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1500 mm
TVR-Ex, pneumatic, sound pressure level at differential pressure 150 Pa
NS | qᵥ [l/s] | qᵥ [m³/h] | Air-regenerated noise | Case-radiated noise | |||
---|---|---|---|---|---|---|---|
① | ② | ③ | ④ | ① | |||
LPA [dB(A)] | LPA1 [dB(A)] | LPA2 [dB(A)] | |||||
125 | 22 | 79 | 36 | 25 | 16 | <15 | 16 |
125 | 60 | 216 | 45 | 36 | 30 | 28 | 25 |
125 | 105 | 378 | 49 | 40 | 34 | 32 | 31 |
125 | 150 | 540 | 52 | 41 | 34 | 32 | 35 |
160 | 35 | 126 | 41 | 30 | 22 | 19 | 22 |
160 | 100 | 360 | 47 | 39 | 34 | 31 | 28 |
160 | 175 | 630 | 50 | 42 | 37 | 34 | 32 |
160 | 250 | 900 | 53 | 44 | 39 | 36 | 37 |
200 | 60 | 216 | 41 | 32 | 24 | 22 | 21 |
200 | 160 | 576 | 47 | 40 | 34 | 33 | 29 |
200 | 280 | 1008 | 50 | 44 | 40 | 38 | 32 |
200 | 405 | 1458 | 54 | 45 | 39 | 38 | 38 |
250 | 90 | 324 | 38 | 30 | 24 | 22 | 22 |
250 | 245 | 882 | 47 | 40 | 34 | 32 | 35 |
250 | 430 | 1548 | 48 | 42 | 38 | 37 | 37 |
250 | 615 | 2214 | 52 | 44 | 38 | 37 | 42 |
315 | 145 | 522 | 43 | 36 | 29 | 26 | 29 |
315 | 410 | 1476 | 47 | 42 | 35 | 34 | 39 |
315 | 720 | 2592 | 49 | 44 | 39 | 38 | 42 |
315 | 1030 | 3708 | 53 | 48 | 42 | 41 | 46 |
400 | 240 | 864 | 43 | 36 | 29 | 26 | 31 |
400 | 670 | 2412 | 44 | 38 | 32 | 30 | 37 |
400 | 1175 | 4230 | 47 | 42 | 36 | 35 | 41 |
400 | 1680 | 6048 | 50 | 44 | 38 | 37 | 46 |
① TVR-Ex
② TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 500 mm
③ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1000 mm
④ TVR-Ex with secondary silencer CA, insulation thickness 50 mm, length 1500 mm
Specification text
VAV terminal units for variable and constant air volume systems in potentially explosive atmospheres, suitable for supply or 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, the electronic control components, and parts for equipotential bonding and for use in potentially explosive atmospheres. Each unit contains an averaging differential pressure sensor for volume flow rate measurement and a damper blade. Factory mounted control components complete with wiring and tubing.
Differential pressure sensor with 3 mm measuring holes (resistant to dust and pollution)
Spigot with lip seal, for circular connecting ducts to EN 1506 or EN 13180.
Closed blade air leakage to EN 1751, class 4 (nominal sizes 125 and 160, class 3).
Casing air leakage to EN 1751, class C.
Special features
Materials and surfaces
Construction
Technical data
Attachments
Variable volume flow control with electronic controller to connect an external control signal; actual value signal can be integrated into the central BMS.
Sizing data
Air-regenerated noise
Case-radiated noise
TVR-Ex | – | P1 | / | 125 | / | S1F | / | V | 0 | / | 200 – 400 [m³/h] | / | NO |
| | | | | | | | | | | | | | | | ||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Type | TVR-Ex |
Material | Inner duct powder-coated, silver grey (RAL 7001) |
Nominal size [mm] | 125 |
Attachments (control components) | ExReg controller and spring return actuator |
Operating mode | Variable operation (adjustable setpoint value range) |
Signal voltage range | 0 – 10 V DC |
Operating values for factory setting | 200 – 400 [m³/h] |
Damper blade position | Power off to open (Normally Open) |
TVR-Ex | – | P1 | / | 160 | / | TEF | / | EC | – | E0 | / | M | / | 200 – 400 [m3/h] | / | NO |
| | | | | | | | | | | | | | | | | | ||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
Order example: TVR-Ex-P1/160/TEF/EC-E0/M/200-400[m3/h]/NO
Type | TVR-Ex |
Material | Inner duct powder-coated, silver grey (RAL 7001) |
Nominal size [mm] | 160 |
Attachments (control components) | TCU3 controller installed outside of the Ex zone (away from the terminal unit) |
Actuator | Spring return actuator |
Equipment function | Single controller – extract air (Extract Controller) |
External volume flow rate setting | Variable, signal voltage range 0 – 10 V DC |
Expansion modules | 24 V AC/DC power supply, EM-BAC-MOD for Modbus RTU communication interface |
Operating values for factory setting | 200 – 400 [m3/h] |
Damper blade position | Power off to open (Normally Open) |
TVR-Ex | – | P1 | / | 125 | / | PG5 | / | V | / | 200 – 400 [m³/h] | / | NO |
| | | | | | | | | | | | | | ||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 |
Order example: TVR-Ex-P1/125/PG5/V/200-400[m³/h]/NO
Type | TVR-Ex |
Material | Inner duct powder-coated, silver grey (RAL 7001) |
Nominal size [mm] | 125 |
Attachments (control components) | Volume flow controller with actuator |
Operating mode | Variable operation (adjustable setpoint value range) |
Operating values for factory setting | 200 – 400 [m3/h] |
Damper blade position | Power off to open (Normally Open) |
TVR-Ex
NS | ØD | B3 | H3 | C |
---|---|---|---|---|
125 | 124 | 372 | 221 | 129 |
160 | 159 | 372 | 221 | 111 |
200 | 199 | 463 | 311 | 182 |
250 | 249 | 463 | 311 | 157 |
315 | 314 | 627 | 461 | 289 |
400 | 399 | 627 | 461 | 246 |
TVR-Ex
NS | TVR-Ex/.../TEx | TVR-Ex/.../Pxx |
---|---|---|
kg | ||
125 | 17.5 | 15.5 |
160 | 17.5 | 15.5 |
200 | 19 | 17 |
250 | 19 | 17 |
315 | 23 | 21 |
400 | 23 | 21 |
Installation and commissioning
Electronic control
Pneumatic control
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.
Space required for commissioning and maintenance
Sufficient space must be kept clear near any attachments to allow for commissioning and maintenance. It may be necessary to provide sufficiently sized inspection access openings.
Space required
NS | ① | ② | ③ |
---|---|---|---|
125 | 600 | 220 | 300 |
160 | 600 | 220 | 300 |
200 | 600 | 310 | 300 |
250 | 600 | 310 | 300 |
315 | 600 | 460 | 300 |
400 | 600 | 460 | 300 |
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Kontakt
Tu smo za vas
Molimo Vas da navedete sadržinu poruke i vrstu zahteva
Tel.: +381 11 2622 543 | Fax: +49 (0)2845/202-265
Kontakt
Zahvaljujemo na vašoj poruci!
Vaša poruka je poslata i biće uskoro obrađena.
Naše odeljenje za servisnu podršku će Vas kontaktirati u najkraćem roku.
Za opšta pitanja u vezi proizvoda ili usluga možete takoše da pozovete:
Tel.: +381 11 2622 543 | Fax: +381 11 2624 150