Krantz Components

The SailRadiation · induction · convectionin section

AVACS

Multifunction free-hanging ceiling sail

blue = cool supply air orange = warm air

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An acoustic metal chilled sail with a hidden induction unit. Cooling, heating, air circulation and sound absorption in one panel. (DS 4170 E p. 2)

AVACS Multifunction free-hanging ceiling sail by Krantz
AVACSRadiant cooling · chilled ceiling
Overall height
50 mm (panel); min. suspended height 170 mmp. 3
System type
multifunction acoustic chilled sail with supply air via induction unitp. 2
Heating capacity
graph to EN 14037 (with 100 m³/h, 20 °C supply air); layout example 678 Wp. 5
Source · DS 4170 EKrantz, Multifunction exposed ceiling AVACS, DS 4170 E 06.2024

Stylised view, not a measurement

Technical data ↓

Air principle

From outlet to occupied zone.

At the outlet

The induction unit discharges about 25 % of the supply air above the panel and 75 % below it. That sets a lot of room air in motion. (DS 4170e 06.2024 p. 2)

In the room

The Coanda effect carries the air almost horizontally along the underside of the sail. The panel also cools and heats by radiation. (DS 4170 E p. 2)

Construction

A perforated ceiling plate with bonded aluminium contact profiles and a copper meander, carried by steel cross members. The induction unit is screwed to the plate; optional return grille and absorbers. (DS 4170 E p. 2–3)

Technical data AVACS

Krantz Components, Multifunction ceiling sail AVACS, DS 4170e 06.2024 (krantz.de).

Page numbers are PDF pages of the data sheet.

Download documents

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Air

Specifications of the AVACS with the source of each value · Air
PropertyValue · Source
Principle radiant cooling and heating, induction, convection; Coanda effect along the underside DS 4170 E p. 2
Cooling capacity up to 165 W/m² at 10 K (EN 14240) p. 5
Measured 125 W/m² at 8 K with 100 m³/h supply air (test set-up 3 400 × 900 mm, two-part) p. 5
Per floor area up to 80 W/m² at approx. 85 % coverage, with turbulent mixing ventilation p. 8
Heating chart to EN 14037 (100 m³/h, supply air 20 °C); worked example 678 W p. 5
Supply air 50 – 150 m³/h; recirculation version 50 – 100 m³/h p. 6
Water (design) room 26 °C, flow 17 °C, return 19 °C; min. 45 l/h per circuit; max. water-side pressure drop 30 kPa p. 8
Sound supply air: 7 – 66 Pa, LWA < 20 to 47 dB(A) at 50 – 150 m³/h; recirculation: 35 – 52 dB(A) at 50 – 100 m³/h p. 6

Design

Specifications of the AVACS with the source of each value · Design
PropertyValue · Source
Dimensions length 1 000 – 6 000 mm (single or multi-panel, panel max. 3 000 mm); width 800 – 1 350 mm; height 50 mm p. 3
Installation min. suspension height 170 mm p. 3
Material perforated steel plate max. 0.8 mm (hole 2.5 mm, approx. 16 % open), powder-coated, with acoustic fleece; copper tube 12 × 0.4 mm; aluminium contact profile 78 mm; cross members 2 mm steel p. 3
Connections water: push-in fittings Ø 12 mm; air: oval spigot for flexible duct DN 125 p. 2
Operating pressure / weight 6 bar (up to 16 bar); approx. 8 kg/m² filled, plus 3.4 kg for the induction unit p. 3
Options single or multi-part; rigid or hinged; with or without supply air; recirculation with fan; return grille; absorbers; inspection element p. 2

Versions and sizes

Lengths from 1 to 6 m, widths from 800 to 1 350 mm.

1 000 … 6 000 mm × 800 – 1 350 mm × 50 mm (DS 4170e p. 3)

Versions

with supply air, or as recirculation version with fan (p. 2, p. 6)

Finish

powder-coated similar to RAL 9010 (satin), perforated, with fully bonded acoustic fleece (p. 3)

In the room

free-hanging below the ceiling, rigid or hinged (p. 2–3)

Applications

Where it belongs.

Offices, meeting rooms, foyers, exhibition spaces and libraries, at medium cooling loads (DS 4170 E p. 2).

When not: If no air function is needed and you want an exposed sail with higher radiant cooling, look at the SKS-5/3 (160 W/m² as chilled sail, DS 4105 E p. 2). For very high loads above an open ceiling the SKS-4/3-duo fits (216 W/m², DS 4143 E p. 2).

Related in the collection

Same family, a different character.

TypeWhat it isEssenceSource
SKS-5/3Static chilled ceiling, exposedfree-floating sail or island; 160 W/m² elementDS 4105 E p. 2
SKS-4/3-duoStatic chilled ceiling, concealedabove an open suspended ceiling; 216 W/m² elementDS 4143 E p. 2
KrantzCoolMultifunction ceiling sailcompact, close to the concrete soffit; two-way horizontal dischargekrantz.de

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