TDV-SilentAir

TDV-SA-Q-Z/600

Circular diffuser face

White air control blades

Horizontal two-way air discharge

Horizontal one-way air discharge

Horizontal swirling air discharge

TDV-SILENTAIR

WITH VERY LOW SOUND POWER LEVEL FOR COMFORT ZONES AND INDIVIDUALLY MANUALLY ADJUSTABLE AIR CONTROL BLADES

Circular and square ceiling swirl diffusers

Nominal sizes 12, 16, 20, 24 in
Volume flow rate range 23 - 627 cfm
Diffuser face made of galvanized sheet steel, powder-coated
For supply and extract air
For variable and constant volume flows
For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
High induction results in a rapid reduction of the temperature difference and airflow velocity
Air control blades can be adjusted individually for adjusting the air pattern
Ideal for comfort zones

Optional equipment and accessories

Exposed diffuser face available in RAL CLASSIC colors, air control blades in black or white
Horizontal or vertical duct connection
Plenum box with cord-operated damper blade and pressure tap

Initialize order code

Application

Application

Type TDV-SilentAIR ceiling swirl diffusers are used as supply air or extract air diffusers for comfort zones
Attractive design element for building owners and architects with demanding aesthetic requirements
Horizontal swirling supply air discharge for mixed flow ventilation
The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity (supply air variant)
Individually adjustable air control blades to meet individual requirements
For variable and constant volume flows
For supply air to room air temperature differences from –21.6 to +18 °F
For room heights up to 13.3 ft (lower edge of suspended ceiling)
For all types of ceiling systems
With an extended border also suitable for freely suspended installation (supply air variant)

Special characteristics

Very low sound power level, ideal for comfort zones
Individually manually adjustable air control blades
For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
Black or white air control blades

Nominal sizes

12, 16, 20, 24

Description

Variants

TDV-SA-Q: Square diffuser face
TDV-SA-R: Circular diffuser face
TDV-SA-*-Z: Supply air
TDV-SA-*-A: Extract air

Connection

H: Horizontal duct connection
V: Vertical duct connection

Parts and characteristics

Circular or square diffuser face
Diffuser face with individually manually adjustable air control blades
Simple installation of the diffuser face due to central fixing screw with decorative cap
Damper blade for volume flow rate balancing (optional)

Attachments

M: Damper blade for volume flow rate balancing
MN: Pressure tap and cord-operated damper blade for volume flow rate balancing with the diffuser face in place

Accessories

Lip seal

Construction features

Inlet suitable for circular ducts to ANSI/SMACNA 006-2006 and EN 1506 or EN 13180
Inlet with groove for lip seal (if accessory lip seal has been ordered)

Materials and surfaces

Diffuser face made of galvanized sheet steel
V, H: Plenum box and cross bar made of galvanised sheet steel
X: Plenum box made of plastic and galvanized sheet steel
Air control blades made of plastic, UL 94, V-0, flame retardant
Lip seal made of rubber
Exposed diffuser face powder-coated RAL 9010, pure white
P1: Powder-coated, RAL CLASSIC colour
Air control blades for supply air similar to RAL 9005, black; extract air variant without air control blades
Q11: Air control blades for extract air similar to RAL 9005, black
Q21: Air control blades for supply air and extract air similar to RAL 9010, white

Standards and guidelines

Sound power level of the air-regenerated noise measured according to EN ISO 5135

Maintenance

Maintenance-free as construction and materials are not subject to wear
Inspection and cleaning to VDI 6022

Technical information

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

Schematic illustration of the TDV-SA, with plenum box for horizontal duct connection

A TDV-SA-Q
B TDV-SA-R
① Diffuser face
② Central fixing screw
③ Adjustable air control blades
④ Plenum box
⑤ Cross bar
⑥ Suspension hole
⑦ Spigot
Optional
⑧ Lip seal
⑨ Damper blade for volume flow rate balancing
⑩ Pressure tap
⑪ Green cord for closing the damper blade
⑫ White cord for opening the damper blade
⑬ Measuring tube
⑭ Text label indicating plenum box variant

Functional description

Ceiling swirl diffusers in air conditioning systems create a swirl to supply air to rooms. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. Ceiling swirl diffusers allow for large volume flow rates. The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.

Type TDV ceiling swirl diffusers have adjustable air control blades. The air pattern can be adjusted to meet different local requirements. Horizontal air discharge is one-way, two-way or omni directional. Vertical air discharge is possible but only for heating. The supply air to room air temperature difference may range from –12 to +10 K.

A damper blade (optional) simplifies volume flow rate balancing for commissioning. Pressure tap and cord-operated damper blade (optional) allow for volume flow rate balancing with the diffuser face in place.

To give rooms an aesthetic, uniform look, Type TDV diffusers may also be used for extract air. Air control blades are not required for extract air applications.

Nominal sizes	300, 400, 500, 600, 625 mm
Minimum volume flow rate, with Δt_Z = –6 K	11 – 47 l/s or 40 – 169 m³/h
Maximum volume flow rate, with L_WA ≅ 50 dB(A)	95 – 315 l/s or 342 – 1134 m³/h
Supply air to room air temperature difference	–12 to +10 K

Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures.

The minimum volume flow rates apply to a supply air to room air temperature difference of –6 K.

The maximum volume flow rates apply to a sound power level of approx. 50 dB (A) with damper blade position 0°.

Exact values for all parameters can be determined with our Easy Product Finder design programme.

TDV-SA-Q-Z-H (supply air), sound power level and total differential pressure

Nominal size	V		Damper blade position
Nominal size	V		0°		45°		90°
Nominal size	V		Δp_t	L_WA	Δp_t	L_WA	Δp_t	L_WA
Nominal size	l/s	m³/h	Pa	dB(A)	Pa	dB(A)	Pa	dB(A)
300	11	40	1	<15	1	<15	2	<15
300	40	144	11	25	14	27	32	25
300	65	234	28	37	37	37	83	38
300	95	342	60	50	79	48	179	52
400	20	72	1	<15	1	<15	3	<15
400	60	216	10	26	12	18	28	27
400	100	360	26	39	35	36	79	39
400	140	504	52	50	68	49	154	49
500	30	108	1	<15	2	<15	6	<15
500	80	288	11	22	16	21	46	26
500	135	486	30	38	46	38	130	43
500	190	684	59	50	91	51	257	55
600, 625	47	169	2	<15	2	<15	6	<15
600, 625	125	450	12	22	15	22	44	27
600, 625	200	720	30	38	39	37	112	43
600, 625	275	990	57	50	74	49	212	55

TDV-SA-R-Z-H (supply air), sound power level and total differential pressure

Nominal size	V		Damper blade position
Nominal size	V		0°		45°		90°
Nominal size	V		Δp_t	L_WA	Δp_t	L_WA	Δp_t	L_WA
Nominal size	l/s	m³/h	Pa	dB(A)	Pa	dB(A)	Pa	dB(A)
300	11	40	1	<15	1	<15	2	<15
300	40	144	10	25	14	24	32	23
300	70	252	31	35	43	36	97	38
300	111	398	78	50	108	50	243	54
400	20	72	1	<15	1	<15	3	<15
400	65	234	11	25	14	25	34	25
400	115	414	34	39	45	39	105	41
400	155	558	62	50	82	48	191	51
500	30	108	1	<15	2	<15	6	<15
500	90	324	13	22	20	23	56	28
500	155	558	39	38	59	40	165	45
500	215	774	75	50	114	52	318	57
600, 625	47	169	2	<15	2	<15	6	<15
600, 625	130	468	13	21	19	22	47	30
600, 625	215	774	35	37	51	38	130	45
600, 625	295	1062	66	50	96	50	244	57

TDV-SA-*-Z-V (supply air), sound power level and total differential pressure

Nominal size	V		Damper blade position
Nominal size	V		0°		45°		90°
Nominal size	V		Δp_t	L_WA	Δp_t	L_WA	Δp_t	L_WA
Nominal size	l/s	m³/h	Pa	dB(A)	Pa	dB(A)	Pa	dB(A)
300	11	40	1	<15	1	<15	2	<15
300	30	108	6	17	8	19	17	18
300	65	234	29	37	36	38	82	38
300	95	342	63	50	77	51	174	52
400	20	72	1	<15	1	<15	3	<15
400	60	216	9	21	12	23	29	22
400	110	396	31	39	40	39	96	42
400	150	540	58	50	73	51	179	54
500	30	108	1	<15	2	<15	6	<15
500	85	306	11	20	18	23	49	29
500	140	504	30	38	49	42	133	46
500	195	702	59	50	94	56	258	58
600, 625	47	169	2	<15	3	<15	7	<15
600, 625	120	432	12	23	17	25	42	33
600, 625	190	684	29	38	42	42	106	48
600, 625	260	936	55	50	79	55	198	60

Ceiling swirl diffusers with square or circular diffuser face. Supply air and extract air variants for comfort zones. Diffuser face with individually manually adjustable air control blades for horizontal swirling supply air discharge creating high induction levels. For installation into all types of suspended ceilings.

Ready-to-install component which consists of the diffuser face with radially arranged, individually adjustable black or white air control blades, and of a plenum box, equalising element (only supply air variants), side entry or top entry spigot, and suspension holes or suspension lugs.

The diffuser face is fixed to the cross bar with a central screw, concealed by a decorative cap.

Spigot suitable for ducts to EN 1506 or EN 13180.

Sound power level of the air-regenerated noise measured according to EN ISO 5135.

Special characteristics

Very low sound power level, ideal for comfort zones
Individually manually adjustable air control blades
For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
Black or white air control blades

Materials and surfaces

Diffuser face made of galvanised sheet steel
V, H: Plenum box and cross bar made of galvanised sheet steel
X: Plenum box made of plastic and galvanised sheet steel
Air control blades made of plastic, UL 94, V-0, flame retardant
Lip seal made of rubber
Exposed diffuser face powder-coated RAL 9010, pure white
P1: Powder-coated, RAL CLASSIC colour
Air control blades for supply air similar to RAL 9005, black; extract air variant without air control blades
Q11: Air control blades for extract air similar to RAL 9005, black
Q21: Air control blades for supply air and extract air similar to RAL 9010, white

Technical data

Nominal sizes: 300, 400, 500, 600, 625 mm
Minimum volume flow rate, with Δt_Z = –6 K: 11 – 47 l/s or 40 – 169 m³/h
Maximum volume flow rate, with L_WA ≅ 50 dB(A): 95 – 315 l/s or 342 – 1134 m³/h
Supply air to room air temperature difference: –12 to +10 K

Sizing data

V _______________________ [m³/h]
Δp_t _______________________ [Pa]

Air-regenerated noise

L_WA _______________________ [dB(A)]

Type
TDV-SA Swirl diffuser

Construction style
R Circular
Q Square

System
Z Supply air
A Extract air

Connection
H Horizontal
V Vertical

Damper blade for volume flow rate balancing
       No entry: without damper blade
M       With damper blade
MN       With cords and pressure tap (only for connection H)

Accessories
No entry: without accessories
L With lip seal

Nominal size [mm]
300
400
500
600
625

Colour of air control blades
No entry: supply air – black air control blades, extract air – no air control blades
Q11       Extract air – black air control blades
Q21       Supply air – white air control blades
       Extract air – white air control blades

Exposed surface
No entry: powder-coated RAL 9010, pure white
P1 Powder-coated, specify RAL CLASSIC colour

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

Order example: TDV-SA–Q–Z–H–MN–L/600/P1–RAL 9016

Construction style	Square
System	Supply air
Connection	Horizontal
Damper blade for volume flow rate balancing	With cords and pressure tap
Accessories	Lip seal
Nominal size	600
Colour of air control blades	Black
Exposed surface	RAL 9016, traffic white, gloss level 70 %

Variants, Dimensions and weight, Product details

TDV-SA-Q-Z/600

TDV-SA-Q-*-H

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

Ceiling swirl diffuser with square diffuser face
With plenum box for horizontal duct connection

Nominal sizes

300, 400, 500, 600, 625

Parts and characteristics

Square diffuser face
Plenum box for horizontal duct connection
Square opening to accommodate the diffuser face
Equalising element that ensures a uniform airflow through the diffuser face (supply air variant)
Simple installation of the diffuser face due to central fixing screw with decorative cap
Damper blade for volume flow rate balancing (optional)
Pressure tap and cord-operated damper blade for volume flow rate balancing (optional)
Lip seal (optional)

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180
Spigot with groove for lip seal (if accessory lip seal has been ordered)

TDV-SA-Q-*-V

Designed for high comfort

Variant

Ceiling swirl diffuser with square diffuser face
With plenum box for vertical duct connection

Nominal sizes

300, 400, 500, 600, 625

Parts and characteristics

Square diffuser face
Plenum box for vertical duct connection
Circular opening to accommodate the diffuser face
Equalising element that ensures a uniform airflow through the diffuser face (supply air variant)
Simple installation of the diffuser face due to central fixing screw with decorative cap
Damper blade for volume flow rate balancing (optional)
Lip seal (optional)

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180
Spigot with groove for lip seal (if accessory lip seal has been ordered)

TDV-SA-R-*-H

Designed for high comfort

Variant

Ceiling swirl diffuser with circular diffuser face
With plenum box for horizontal duct connection

Nominal sizes

300, 400, 500, 600, 625

Parts and characteristics

Circular diffuser face
Plenum box for horizontal duct connection
Circular opening to accommodate the diffuser face
Equalising element that ensures a uniform airflow through the diffuser face (supply air variant)
Simple installation of the diffuser face due to central fixing screw with decorative cap
Damper blade for volume flow rate balancing (optional)
Pressure tap and cord-operated damper blade for volume flow rate balancing (optional)
Lip seal (optional)

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180
Spigot with groove for lip seal (if accessory lip seal has been ordered)

TDV-SA-R-*-V

Designed for high comfort

Variant

Ceiling swirl diffuser with circular diffuser face
With plenum box for vertical duct connection

Nominal sizes

300, 400, 500, 600, 625

Parts and characteristics

Circular diffuser face
Plenum box for vertical duct connection
Circular opening to accommodate the diffuser face
Equalising element that ensures a uniform airflow through the diffuser face (supply air variant)
Simple installation of the diffuser face due to central fixing screw with decorative cap
Damper blade for volume flow rate balancing (optional)
Lip seal (optional)

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180
Spigot with groove for lip seal (if accessory lip seal has been ordered)

Square diffuser face with plenum box for horizontal duct connection

TDV-SA-Q-*-H

Nominal size	□Q₁ mm	H₁ mm	□Q₃ mm	H₃ mm	ØD mm	A mm	C mm	Plenum box	m kg
300	298	8	290	250	158	139	50	AK-Uni-001	3.7
400	398	8	372	295	198	164	50	AK-Uni-002	5.7
500	498	8	476	295	198	164	50	AK-Uni-003	7.8
600	598	8	567	345	248	199	48	AK-Uni-004	10.9
625	623	8	567	345	248	199	48	AK-Uni-004	11.5

Weights apply to the supply air variant

TDV-SA-Q-*-V

Nominal size	□Q₁ mm	H₁ mm	ØD₃ mm	H₃ mm	ØD mm	C mm	m kg
300	298	8	275	200	158	50	2.7
400	398	8	364	200	198	50	4.2
500	498	8	462	200	198	50	6.0
600	598	8	559	200	248	48	8.2
625	623	8	559	200	248	48	8.4

Weights apply to the supply air variant

TDV-SA-R-*-H

Nominal size	ØD₁ mm	H₁ mm	□Q₃ mm	H₃ mm	ØD₄ mm	H₄ mm	ØD mm	A mm	C mm	Plenum box	m kg
300	300	8	290	285	278	250	158	174	50	AK-Uni-013	4.0
400	400	8	372	330	362	295	198	199	50	AK-Uni-014	6.1
500	500	8	476	330	460	295	198	199	50	AK-Uni-015	8.3
600	600	8	567	380	557	345	248	234	48	AK-Uni-016	11.2
625	625	8	567	380	557	345	248	234	48	AK-Uni-016	11.8

Weights apply to the supply air variant

TDV-SA-R-*-V

Nominal size	ØD₁ mm	H₁ mm	ØD₃ mm	H₃ mm	ØD mm	C mm	m kg
300	300	8	275	200	158	50	2.6
400	400	8	364	200	198	50	4.0
500	500	8	462	200	198	50	5.7
600	600	8	559	200	248	48	7.4
625	625	8	559	200	248	48	7.6

Weights apply to the supply air variant

Diffuser face TDV-SA-Q

TDV-Q

Nominal size	□Q₁ mm	ØD₂ mm	A_eff m²
300	298	254	0.0120
400	398	336	0.0210
500	498	440	0.0310
600	598	530	0.0440
625	623	530	0.0440

TDV-R

Nominal size	ØD₁ mm	ØD₂ mm	A_eff m²
300	300	254	0.0120
400	400	336	0.0210
500	500	440	0.0310
600	600	530	0.0440
625	625	530	0.0440

Installation examples, Installation details, Commissioning, Basic information and nomenclature

Installation in T-bar ceilings

Flush ceiling installation with square plenum box

① Duct
② Suspension hole
③ Diffuser face

Horizontal duct connection
Four suspension holes
Suspension with cords, wires or hangers, to be provided by others

Installation and commissioning

Preferably for rooms with a clear height up to 4.0 m
Flush ceiling installation
Freely suspended installation only with an extended border (supply air variant)
Horizontal or vertical duct connection
If necessary, carry out volume flow rate balancing with the damper blade

These are only schematic diagrams to illustrate installation details.

AK-Uni-...-MN Volume flow rate balancing

① Damper blade
② White cord for opening the damper blade

Open, 0°

Volume flow rate balancing

When several diffusers are connected to just one volume flow controller, it may be necessary to balance the volume flow rates.

Ceiling diffusers with universal plenum box and damper blade (variant -M): The diffuser face can be removed to access the damper blade; the damper blade can then be set to any position between 0 and 90°
Ceiling diffusers with universal plenum box, damper blade and pressure tap (variant -MN): The diffuser face need not be removed since the damper blade can be set with two cords (white and green).

Volume flow rate measurement

Ceiling diffusers with universal plenum box, damper blade and pressure tap (variant -MN) allow for volume flow rate balancing even with the diffuser face in place.

Connect the measuring tube to the digital manometer
Read the effective pressure
Read the volume flow rate off the characteristic or calculate it
If necessary, adjust the damper blade position with the cords

A characteristic is included with each AK-Uni plenum box.

Principal dimensions

ØD [mm]

Outer diameter of the spigot

ØD₁ [mm]

Outer diameter of a circular diffuser face

ØD₂ [mm]

Diameter of a circular diffuser face style

ØD₃ [mm]

Diameter of a circular plenum box

□Q₁ [mm]

Outer diameter of a square diffuser face

□Q₂ [mm]

Dimensions of a square diffuser face style

□Q₃ [mm]

Dimensions of a square plenum box

H₁ [mm]

Distance (height) from the lower edge of the suspended ceiling to the lower edge of the diffuser face

H₂ [mm]

Height of a ceiling diffuser, from the lower edge of the suspended ceiling to the upper edge of the spigot

H₃ [mm]

Height of a ceiling diffuser with plenum box, from the lower edge of the suspended ceiling to the upper edge of the plenum box or of the spigot

A [mm]

Position of the spigot, defined by the distance of the spigot centre line to the lower edge of the suspended ceiling

C [mm]

Length of the spigot

m [kg]

Weight

Nomenclature

L_WA [dB(A)]

A-weighted sound power level of air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δt_z [K]

Supply air to room air temperature difference, i.e. supply air temperature minus room temperature

Δp_t [Pa]

Total differential pressure

A_eff [m²]

Effective air discharge area

All sound power levels are based on 1 pW.

Downloads

product information

Product data sheet Type TDV-Silentair

Product data sheet 3,8 MB pdf

certificates

Declaration of hygiene conformity Type TDV-SilentAir

TDV-SilentAir_HC_2024_05_DE_en Hygiene certificate 1,8 MB pdf
Environmental Product Declaration TDV

TDV_EPD_2024_11_DE_en Environmental Product Declaration 1,1 MB pdf

operation manuals

Installation manual Air terminal devices

IM_2018_06_A00000054447 Installation manual 1,2 MB pdf

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TDV-SILENTAIR

WITH VERY LOW SOUND POWER LEVEL FOR COMFORT ZONES AND INDIVIDUALLY MANUALLY ADJUSTABLE AIR CONTROL BLADES

Application

Description

Technical information

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

Variants, Dimensions and weight, Product details

Installation examples, Installation details, Commissioning, Basic information and nomenclature

Downloads

product information

Product data sheet Type TDV-Silentair

certificates

Declaration of hygiene conformity Type TDV-SilentAir

Environmental Product Declaration TDV

operation manuals

Installation manual Air terminal devices

TECHNICALLY NECESSARY

STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

FOR THE BEST TROX EXPERIENCE