TZ-Silenzio

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TZ-SILENZIO

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Function, Technical data, Specification text, Order codes, Related products

Variants

VAV terminal unit, variant TZ-Silenzio

VAV TERMINAL UNIT, VARIANT TZ-SILENZIO - D

product information

brochures

certificates

operation manuals

For supply air systems with demanding acoustic requirements and low airflow velocities

General Information

Function, Technical data, Specification text, Order codes, Related products

Variants

VAV terminal unit, variant TZ-Silenzio

VAV TERMINAL UNIT, VARIANT TZ-SILENZIO - D

product information

brochures

certificates

operation manuals

Product data sheet TZ-Silenzio

Sales flyer Type LVC, TZ-Silenzio, TA-Silenzio, VFL

Declaration of conformity or declaration of incorporation Types TZ-Silenzio, TA-Silenzio

Declaration of hygiene conformity Type TZ-Silenzio

Environmental Product Declaration TZ-Silenzio

Environmental Product Declaration TZ-Silenzio-D

Assembly and operating instructions TZ-Silenzio

VAV terminal unit Type TZ-Silenzio

Easyregler-Compactregler_img_01_2020_01_DE__6_psd.psd.link

Easy controller, Compact controller

TU-ELAB-Regler_img_01_2020_01_DEpsd.psd.link

TROX UNIVERSAL controller,

TROX LABCONTROL controller

Rectangular connections on both ends

For all upstream conditions

Tested to VDI 6022

TZ-SILENZIO

For supply air systems with demanding acoustic requirements and low airflow velocities

Rectangular VAV terminal units for the supply air control in buildings with variable air volume systems, demanding acoustic requirements and low airflow velocities

Highly effective integral attenuator
Optimised for airflow velocities of 0.7 – approx. 7 m/s
High control accuracy, even in case of unfavourable upstream conditions
Compact construction with rectangular connections on both ends
Electronic control components for different applications (Easy, Compact, Universal, and LABCONTROL)
Closed blade air leakage to EN 1751, Class 4
Casing leakage to EN 1751, Class C

Optional equipment and accessories

Acoustic cladding for the reduction of case-radiated noise
Secondary silencer Type TS for the reduction of air-regenerated noise
Hot water heat exchanger of Type WT for reheating the airflow

Application

Rectangular VAV terminal units for use in ventilation and air conditioning systems
For controlling, restricting or shutting off airflows in supply air systems with low velocities and demanding acoustic requirements
Integral attenuator
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 differential pressure control with suitable control components

Special features

Hygiene tested and certified
Direct connection to ductwork
Factory set-up or programming and aerodynamic function testing
Parameters can also later be set on the control component; additional adjustment device may be necessary

Nominal sizes

125, 160, 200, 250, 315

Variants

TZ-Silenzio: supply air unit
TZ-Silenzio-D: supply air unit with acoustic cladding
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 sensor for volume flow rate measurement
Damper blade
Integral attenuator
Factory assembled control components complete with wiring and tubing
Aerodynamic functional testing on a special test rig prior to shipping of each unit
Set-up data is given on a label or volume flow rate scale affixed to the unit
High control accuracy, even in case of unfavourable upstream conditions

Attachments

Easy controller: compact unit with potentiometers
Compact controller: compact unit consisting of controller with potentiometers, effective pressure transducer and actuator
Universal controller: controller, effective pressure transducer and actuators for special applications
LABCONTROL: Control components for air management systems

Useful additions

Secondary silencer Type TS
Heat exchanger Type WT

Construction features

Rectangular casing
Replaceable seals
Flanges on both ends for the connection to ductwork
Position of the damper blade indicated externally at shaft extension
Thermal and acoustic insulation (lining)

Materials and surfaces

Casing made of galvanised sheet steel
Damper blade and effective pressure sensor made of aluminium
Lining is mineral wool
Plastic plain bearings
Shaft and linkage: 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, 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 4
Meets 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

Technical information

Schematic illustration of the TZ-Silenzio

① Integral sound attenuator

② Effective pressure sensor

③ Control components, e.g. an Easy controller

④ Damper blade with seal

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; the control functions can be achieved with an Easy controller, with a Compact controller, or with individual components (Universal).

For most applications, the setpoint value comes from a room temperature controller.

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.

An integral attenuator reduces the noise that is created by the restriction of the airflow.


Nominal sizes	125 – 315
Volume flow rate range	27 – 1093 l/s or 95 – 3937 m³/h
Volume flow rate control range (unit with dynamic effective pressure measurement)	Approx. 10 – 100 % of the nominal volume flow rate
Minimum differential pressure	Up to 106 Pa (without secondary silencer)
Maximum differential pressure	1000 Pa
Operating temperature	10 to 50 °C

Specification text

Rectangular VAV terminal units for variable and constant air volume systems, for demanding acoustic requirements, suitable for supply air, available in 5 nominal sizes. High control accuracy even in case of unfavourable upstream conditions. 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, a damper blade, and an integral sound attenuator. Factory-assembled control components complete with wiring and tubing. Effective pressure sensor with 3 mm measuring holes, hence resistant to contamination. Casing with acoustic and thermal insulation. 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). Meets the hygiene requirements of EN 16798, Part 3, of VDI 6022, Sheet 1, and of DIN 1946, Part 4.

Special features

Hygiene tested and certified
Direct connection to ductwork
Factory set-up or programming and aerodynamic function testing
Parameters can also later be set on the control component; additional adjustment device may be necessary

Materials and surfaces

Casing made of galvanised sheet steel
Damper blade and differential pressure sensor made of aluminium
Lining is mineral wool
Plastic plain bearings

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 from airflow velocities of up to 20 m/s
Inert to fungal and bacterial growth

Connection type

Flanges on both sides, suitable for duct connection

Technical data

Nominal sizes: 125 – 315
Volume flow rate range: 27 – 872 l/s or 95 – 3142 m³/h
Minimum differential pressure: up to 106 Pa (without secondary silencer)
Maximum differential pressure: 1000 Pa
Closed blade air leakage to EN 1751, Class 4
Casing leakage to EN 1751, Class C

Specification text for 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 contacts: CLOSED, OPEN, qᵥ_minand qᵥ_max
Potentiometers with percentage scales to set the volume flow rates qᵥ_min and qᵥ_max without adjustment device
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. 10 – 100 % of the nominal volume flow rate
Clearly visible external indicator light for signalling the functions: set, not set, and power failure
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]
Δ_pst _______________________[Pa]

Air-regenerated noise

L_PA _______________________[dB(A)]

Case-radiated noise

L_PA _______________________[dB(A)]

Equivalence criteria

Declaration of hygiene conformity in accordance with VDI 6022, part 1 (01/2018), ÖNORM H 6020 (02/2007) and ÖNORM H 6021 (09/2003)
Setting of the volume flow rates without an adjustment device using _Vmin- and _Vmaxpotentiometers
Electrical connections with screw terminals, no junction box required
Aerodynamic functional testing of each volume flow controller on a test rig before shipping (test result on a sticker on the controller)
No upstream section required
Acoustic data to ÖNORM EN ISO 5135:1999
Maximum control deviation of 5 % at q_vmax, without upstream section

Order code for volume flow control (with Easy attachment)

1 Type
TZ-Silenzio VAV terminal unit, supply air

2 Acoustic cladding
No entry: None
D With acoustic cladding

3 Nominal size
125, 160, 200, 250, 315

4 Attachments (control component)
Easy Volume flow controller, dynamic, analogue interface, setting of q_vmin and q_vmax with potentiometers

Order example: TZ–Silenzio/125/Easy

Acoustic cladding	None
Nominal size	125
Attachments (control component)	Easy volume flow controller, dynamic, setting of q_ᵥmin and q_ᵥmax with potentiometers

Order code for volume flow control (with VARYCONTROL attachment)

TZ-Silenzio

–

200

XB4

400 -– 1200 [m³/h]

1 Type
TZ-Silenzio VAV terminal unit, supply air

2 Acoustic cladding
No entry: None
D With acoustic cladding

3 Nominal size
125, 160, 200, 250, 315

4 Attachments (control component)
For example
BC0 Compact controller
XB4 Universal controller (VARYCONTROL)

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

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

8 Operating values for factory setting
Volume flow rates [m³/h or l/s]
qᵥ_const (with operating mode F)
qᵥ_min – qᵥ_max (with operating mode V)

9 Damper blade position
Only with spring return actuators
NO Power off to OPEN
NC Power off to CLOSED

Order example: TZ–Silenzio/200/BC0/V0/300–1200 m³/h

Acoustic cladding	None
Nominal size	200
Attachments (control component)	Compact controller, dynamic transducer, analogue or MP bus interface
Operating mode	Variable operation q_ᵥmin– q_ᵥmax
Signal voltage range	0 – 10 V DC
Operating values	q_ᵥmin = 300 m³/h q_ᵥmax = 1200 m³/h

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

TZ-Silenzio

–

200

TUNF

UMZ

…

qᵥ_{const_sup}: Constant supply air

qᵥ_{const_ext}: Constant extract air

qᵥ_Diff: Supply air/extract air difference

Constant value
qᵥ_const: Constant volume flow rate

Slave
No entry required

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

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

Order example: TZ–Silenzio/200/TUN/RS/M/2/UIZ/600/1250/0/0/-100

Acoustic cladding	None
Nominal size	200
Attachments (control component)	TROX UNIVERSAL controller, actuator 150 s
Equipment function	Supply air control
Volume flow rate setting	Master (RMF)
Signal voltage characteristic	2 – 10 V DC
Expansion modules	with expansion module EM-TRF-USV (transformer for 230 V AC and uninterruptible power supply), with expansion module EM-IP (communication interface BACnet IP, Modbus IP, web server), with expansion module EM-AUTOZERO (solenoid valve for automatic zero point correction)
Operating values	q_vmin = 600 m³/h q_vmax = 1250 m³/h q_{vconst_sup} = 0 m³/h q_{vconst_ext} = 0 m³/h q_vDiff = -100 m³/h

Order code for differential pressure control (with VARYCONTROL attachment)

TZ-Silenzio

–

200

XF4

PRS

30 – 60 [Pa]

1 Type
TZ-Silenzio VAV terminal unit, supply air

2 Acoustic cladding
No entry: None
D With acoustic cladding

3 Nominal size
125, 160, 200, 250, 315

4 Attachments (control component)
For example
XF0 Compact controller for duct pressure
XF4 Universal controller for duct pressure (VARYCONTROL)

5 Equipment function/Installation location
PDS Duct pressure control, supply air
PRS Room pressure control, supply air

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

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

8 Operating values for factory setting
With duct pressure control, the differential pressure [Pa] is always an absolute value
Δ_p,const (with operating mode F)
Δ_p,min - Δ_p,max (with operating mode V)

9 Damper blade position
Only with spring return actuators
NO Power off to OPEN
NC Power off to CLOSED

Order example: TZ-Silenzio-D/315/XF0/PDS/V2/250 – 375 Pa

Acoustic cladding	With
Nominal size	315
Attachments (control component)	Compact controller for duct pressure
Equipment function	Duct pressure control, supply air
Operating mode	Variable pressure control P_min - P_max
Signal voltage characteristic	2 – 10 V DC
Operating values	P_min = 250 Pa P_max = 375 Pa

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

TZ-Silenzio

–

200

TUNF

PRS

MFP

UMZ

…

1 Type
TZ-Silenzio VAV terminal unit, supply air

2 Acoustic cladding
No entry: None
D With acoustic cladding

3 Nominal size
125, 160, 200, 250, 315

4 Attachments (control component)
TROX UNIVERSAL controller with
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)

5 Equipment function
Differential pressure control
PRS Room pressure control, supply air
PDS Duct pressure control, supply air

6 Differential pressure setting
MFP Master, constant pressure control
MVP Master, variable pressure control
SFP Slave, constant pressure control
SVP Slave, variable pressure control

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

8 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: 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: Volume flow rate measurement
No entry: None
V EM-V Volume flow rate measurement for differential pressure control

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

9 Operating values for factory setting
Volume flow rate [m³/h] or [l/s], pressure [Pa]

Slave SVP
Δp_min: Minimum differential pressure
Δp_max: Maximum differential pressure slave SFP
Δp_const: Constant differential pressure

Master MFP and MVP – same as slave, but additionally:
qᵥ_min: Minimum volume flow rate
qᵥ_max: Maximum volume flow rate
qᵥ_{const_sup}: Constant supply air
qᵥ_{const_ext}: Constant extract air
qᵥ_Diff: Supply air/extract air difference

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

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

Order differential pressure transducer for room or duct pressure control separately, e.g.
PT-699 For room pressure control
PT-699-DUCT For duct pressure control, including tube and pressure tap

Order example: TZ-Silenzio/200/TUSD/PRS/MFP/2/BV/-20 Pa/600/1250/0/0/-100

Acoustic cladding	None
Nominal size	200
Attachments (control component)	TROX UNIVERSAL controller, fast-running actuator (3 s) with digital communication interface
Equipment function/installation location	Room pressure control, supply air
Differential pressure setting	Master, constant pressure control
Signal voltage range	2 – 10 V DC
Expansion modules	with expansion module EM-BAC-MOD-01 (communication interface BACnet MS/TP), with expansion module EM-V (volume flow rate measurement for differential pressure control)
Operating values	Δ_pconst = -20 Pa q_vmin = 600 m³/h q_vmax = 1250 m³/h q_{vconst_sup} = 0 m³/h q_{vconst_ext} = 0 m³/h q_vDiff = -100 m³/h

Order code for room control (with EASYLAB attachment)

TZ–Silenzio

–

200

ELAB

UMZ

LAB

…

1 Type
TZ-Silenzio VAV terminal unit, supply air

2 Acoustic cladding
No entry: None
D With acoustic cladding

3 Nominal size
125
160
200
250
315

4 Attachments (control component)
ELAB EASYLAB controller TCU3

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

6 Equipment function
Room control
RS Supply air control (Room Supply)
PC Differential pressure control (Pressure Control)

8 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: 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

9 Additional functions
Without room management function
LAB Extract air led system (laboratories)
CLR Supply air led system (clean rooms)

With room management function
LAB-RMF Extract air led system
CLR-RMF Supply air led system

10 Operating values for factory setting
(only required when room management function is active)

Volume flow rate [m³/h] or [l/s], pressure [Pa]

Total extract air/supply air of room:
qᵥ₁: Standard mode
qᵥ₂: Reduced operation
qᵥ₃: Increased operation
qᵥ₄: Constant supply air
qᵥ₅: Constant extract air
qᵥ₆: Supply air/extract air difference
Δp_Set: Setpoint pressure (only with differential pressure control)

Useful additions
Room control panel (only for units with RMF)
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: TZ–Silenzio/200/ELAB/S/RS/LAB

Acoustic cladding	None
Nominal size	200
Attachments (control component)	EASYLAB controller TCU3
Actuator	Fast-running actuator (3 s)
Equipment function	Supply air control (Room Supply)
Additional function	Extract air led system (laboratories)
Operating values	Not required (room management function is not active)

Order code for single operation (with EASYLAB attachment)

TZ–Silenzio

–

200

ELAB

–

UMZ

…

1 Type
TZ-Silenzio VAV terminal unit, supply air

2 Acoustic cladding
No entry: None
D With acoustic cladding

3 Nominal size
125
160
200
250
315

4 Attachments (control component)
ELAB EASYLAB controller TCU3

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

6 Equipment function
Single operation
SC Supply air controller

7 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

8 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: 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 Operating values for factory setting
Volume flow rate [m³/h] or [l/s]
Depending on external volume flow rate setting:
E0, E2: q_vmin/q_vmax
2P: qᵥ₁/qᵥ₂
3P: qᵥ₁/qᵥ₂/qᵥ₃
F: qᵥ₁

Order example: TZ-Silenzio/160/ELAB/S/SC/3P/400/600/800 m³/h

Acoustic cladding	None
Nominal size	160
Attachments (control component)	ELAB
Actuators	Fast-running actuator (3 s)
Equipment function	Single controller for supply air
External volume flow rate setting	Switch contacts (provided by others) for 3 switching steps
Operating values	q_v1 = 400 m³/hq_v2 = 600 m³/hq_v3 = 800 m³/h

Attachments
Type Easy
Type Compact, dynamic
Type Compact, static
Type Universal, dynamic
Type Universal, static

Additional products
Type TS
Type WT

VAV terminal unit, variant TZ-Silenzio

Application

VAV terminal unit for variable supply air volume flow control

Application

VAV terminal unit with acoustic cladding for variable supply air volume flow control
For rooms where the case-radiated noise of the unit is not sufficiently reduced by a false ceiling
The ducts for the room under consideration must have adequate acoustic insulation (to be provided by others) on the fan end
Ideally, the ducts on the room side should also be insulated (by others)
Acoustic cladding cannot be retrofitted

Standard construction

Order code detail	Part	Material
-	Casing	Galvanised sheet steel
-	Effective pressure sensor	Aluminium
-	Damper blade	Aluminium
-	Damper blade seal	Polyethylene, PE
-	Shaft and linkage	Galvanised steel
	Plain bearings	Plastic
	Gears	Plastic, ABS

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

Downloads

Product data sheet TZ-Silenzio

TZ-Silenzio_PD_2023_06_14_DE_en Product data sheet 810 KB pdf

Sales flyer Type LVC, TZ-Silenzio, TA-Silenzio, VFL

SF/LVC/TZ-Silenzio/TA-Silenzio/VFL/DE/en Sales flyer 940 KB pdf

Declaration of conformity or declaration of incorporation Types TZ-Silenzio, TA-Silenzio

CE_VVS_DE_en Declaration of conformity or declaration of incorporation 200 KB pdf
Declaration of hygiene conformity Type TZ-Silenzio

TZ-Silenzio_HC_2024_05_DE_en Hygiene certificate 1,4 MB pdf
Environmental Product Declaration TZ-Silenzio

TZ-Silenzio_EPD_2024_11_DE_en Environmental Product Declaration 1,1 MB pdf
Environmental Product Declaration TZ-Silenzio-D

TZ-Silenzio-D_EPD_2024_11_DE_en Environmental Product Declaration 1,1 MB pdf

Assembly and operating instructions TZ-Silenzio

TZ-Silenzio_IOM_CD10009_V1_2024_01_GB_en.pdf 1,7 MB pdf

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TZ-Silenzio