MANUAL IRS INSIDE DUCT SILENCER

Manual IRS Inside duct silencer

03-2017

IRS Inside duct silencer

Mounting

Application areas

• For sound insulation

• As an insert with full valve function

• Pressure control (also subsequently)

Easy and quick installation with pre-punched openings.

1. According to the required number remove the elliptical

openings.

2. Push the IRS (I) into the ventilation duct.

Ød1

Description

The IRS is made from a special type of plastic foam with

very good damping abilities. Pressure and air mass ﬂ ow

is easily adjusted by varying the number of open holes

in the damper. The unique material and design of the

damper results in low sound generation even at large

pressure drops. The IRS is incredibly easy to install, which

makes the damper ideal for use with existing installations.

Operation

The IRS is designed for circular pipes. He is completely

produced of soft elastic plastic foam, which has good

damping properties. The damper has a number of oval

openings which are provided with insertable stopper.

Regarding to the special material and design of the

openings the noise generation , even for large pressure

waves, is decreased. The IRS is provided with a measure-

ment outlet opening in order to accelerate the setting.

Soundprooﬁ ng

The stable plastic foam has an open cell structure and

a high density, which enables him to absorb noise in an

exceptional manner. By cascading set multiple IRS in a

channel is the noise damping further increased.

Material properties

The IRS is primarily made of polyester ﬁ ber. This material

meets the SBI test, Pr EN 13823 Class B (B, s1, dO).

The IRS also includes a small proportion of ﬂ exible

polyurethane foam. This substance is non-ﬂ ammable and

corresponds to the FMVSS-302 on combustible materials.

The material of the damping element consists of ﬁ re and

mildew-proof foam, the requirements to the emission

class M1 corresponds (melamine resin). The IRS corres-

ponds to the ﬁ re class B.

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Manual IRS Inside duct silencer IRS Inside duct silencer Application areas • For sound insulation • As an insert with full valve function • Pressure control (also subsequently) Description The IRS is made from a special type of plastic foam with very good damping abilities. Pressure and air mass ﬂow is easily adjusted by varying the number of open holes in the damper. The unique material and design of the damper results in low sound generation even at large pressure drops.
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Manual IRS Inside duct silencer Dimensions ⌀D₂ S Size ⌀D₁ ⌀D₂ S 80 80 82 50 100 100 102 50 125 125 127 50 160 160 162 50 200 200 202 50 ⌀D1 = Diameter of the pipe Installation ⌀D₁ To make the stated technical values asserted, it is necessary that the values shown in the drawing are complied with.