CHM

Multifunctional wall diffuser

{249}

For volume flow limiter VFL: variants prepared with longer spigot

{249}

Standard connection spigot, optionally with lip seal and/or flow adjustment damper

Various diffuser faces

{249}

Installation into ceiling bulkheads

CHM

Multifunctional wall diffuser

Wall diffusers for supply air, extract air, or as a supply and extract air combination with various diffuser faces, for installation in the ceiling bulkhead or wall, e.g. above doors

Wide range of applications due to different diffusers faces and optional additional functions
Diffuser face with slot diffusers, type PURELINE
Nominal lengths 550 – 1175 mm
Easy and tool-free assembly of the diffuser face, e.g. after completion of all preliminary work

Optional equipment

Removable optional splitter for improved cross-talk sound attenuation.
Prepared for room-side mountable volume flow limiter for setting the maximum volume flow rate
Spigot with damper screen for volume flow rate balancing and/or lip seal
Mounting bracket for secure wall mounting
Different looks thanks to colourless anodised or powder-coated slot diffusers and manually adjustable air control blades, optionally in black, white or grey

Initialize order code

Allgemeine Informationen

Application

Wall diffusers as supply or extract air diffuser, or as supply and extract air combination in ventilation systems for comfort areas
The diffuser face can be fitted with type PURELINE front rails
Airflow with ceiling effect or directly into the room as turbulent mixed ventilation
Depending on the setting of the air control blades, the minimum installation height is defined
High induction causes a rapid reduction of the temperature difference and the airflow velocity
For constant and variable volume flows
For supply air to room air temperature differences of -10 to +10 K
For room heights up to 4 m (lower edge of suspended ceiling)
Space-saving installation in walls and ceiling bulkheads
Optionally with mounting brackets for wall mounting (wall thickness 90 to 130 mm)

Special characteristics

Uniform air pattern to reduce dirt deposits that occur on the wall due to induced room air
One-sided supply airflow with ceiling influence, or directly into the room through manually adjustable air control blades
Large penetration depths or throw distances due to direct airflow into the room
Airflow with ceiling influence leads to air distribution below the ceiling with a positive effect on airflow velocity and comfort
Splitters (removable from room side) as cross-talk silencers (optional):
- To reduce sound transmission to adjacent rooms via the air duct system
Optionally with flow rate limiter for setting the maximum volume flow rate
Tool-free fixing for easy and safe installation of the front rail
Installation of the front rail still possible after completion of all preparatory work
Comfortable room climate due to rapid reduction of temperature differences and airflow velocities
High-quality appearance due to extruded aluminium sections with anodised finish or powder coating (according to RAL CLASSIC colour scale)
The front rail has been optimised for maximum volume flow rate at low sound power levels

Nominal sizes

Nominal length L_N:

550, 850, 1000, 1175 mm

Casing depth (without spigot)

340 mm

Casing height (without mounting bracket)

145 mm

Nominal width of air duct (DN): The actual diameter of the spigot depends on the selected variant.

100, 125 mm

Variants

Diffuser face

-PL35: powder-coated front plate with 1 × 3-slot front rail PURELINE35
-3PL35: powder-coated front plate with 3 × 1-slot front rail PURELINE35
-3PL18: powder-coated front plate with 3 × 1-slot front rail PURELINE18
-2PL50: powder-coated front plate with 2 × 1-slot front rail PURELINE50

System

-S: Supply air
-E: Extract air
-SE: Supply and extract air combination

Construction

Diffuser face finish

Type PURELINE front rails anodised, E6-C-0 (natural colour)
-P1: Type PURELINE front rails powder-coated in RAL-CLASSIC colours
Front plate powder-coated in RAL 9010
-P2: Front panel powder-coated in RAL-CLASSIC colours
Manually adjustable air control blades optionally in black, white or grey

Parts and characteristics

Attachments

Splitter

Without splitters: Supply air variants with integrated perforated plate for uniform airflow through the diffuser
-CT: with splitters (removable from the front) to improve cross-talk sound attenuation to reduce sound transmission via the air duct system

Volume flow limiter

Without volume flow limiter:
- With standard connection spigot - optionally available with damper screen for volume flow balancing and/or lip seal to reduce duct leakage
Prepared for volume flow limiter:
- With enlarged outer diameter of the spigot for insertion of a volume flow limiter on the room side - e.g. type VFL
- Damper screen (-D) and lip seal (-LS) not possible with these variants

Construction features

Standard spigot suitable for round air ducts according to EN1506 or EN13180
Manually adjustable air control blades with detent for defined adjustment of the airflow
Factory preset airflow that can be manually adjusted on site (only airflow with ceiling influence or direct airflow into the room)
Standard spigot with groove for lip seal (only for version with lip seal)
Wall diffuser available in nominal lengths 550 - 1175 mm
Mounting brackets for wall mounting: Wall thickness 90 – 130 mm
Fixing material for front diffusers is enclosed loosely, packed in a drawstring bag

Materials and surfaces

Front plate, plenum box, spigot and cassette for splitter mounting made of galvanised sheet steel
Front rails made of extruded aluminium profiles
Air control blades made of ABS plastic, UL 94, V-0, flame retardant
Lip seal made of Evoprene
Acoustic lining made of mineral wool
Front rail anodised E6-C-0 (natural colour) or powder-coated (-P1), colour according to RAL CLASSIC
Surface front plate powder-coated in RAL 9010 or another RAL CLASSIC colour (-P2)
Air control blades similar to RAL 9005, jet black
-W: Air control blades similar to RAL 9010, pure white
-G: Air control blades similar to RAL 9006, grey

Mineral wool

Mineral wool on surfaces in contact with air laminated with glass fibre fabric, abrasion-resistant up to 20 m/s
According to EN13501, building material class A1, non-combustible
RAL quality mark RAL-GZ 388
Non-hazardous thanks to high biosolubility according to the German Ordinance on Hazardous Substances and Note Q of the European Regulation (EC) No. 1272/2008
Inert to fungal and bacterial growth

Standards and guidelines

Sound power level of the air-regenerated noise measured according to EN ISO 5135.
Conforms to VDI 6022
Transmission loss according to ISO 7235

Maintenance

Low maintenance as construction and materials are not subject to wear and tear
Inspection and cleaning according to VDI 6022

Technical information

FUNCTION, SPECIFICATION TEXT, ORDER CODE

Schematic illustration, CHM-35-* as supply and extract air combination

1 Diffuser face consisting of front plate and front rails

2 Adjustable air control blade

3 Plenum box

Optional

4 Mounting brackets for wall mounting (wall thickness 90 - 130 mm)

5 Spigot, prepared for the installation of a volume flow limiter

6 Flow limiter type VFL (to be ordered separately)

7 Standard spigot

8 Damper screen

9 Lip seal

10 Splitters (removable from room side)

Wall diffusers allow the supply air of ventilation and air conditioning systems to flow into the room, with ceiling influence or directly. The airflow occurs with a high induction of the room air. This quickly reduces the air velocity and the temperature difference between supply air and room air. The result is a mixed ventilation system for comfort areas with good room air circulation and low turbulence in the occupied zone. The wall diffusers are equipped with a removable front plate. The front plate contains front rails type PURELINE, which are supplied with factory-set air control blades. The air control blades can be adjusted manually on site. The different airflow directions allow adaptation to different local conditions at any time. The supply air to room air temperature difference may range from -10 to +10 K. To increase transmission loss and reduce sound transmission into adjacent rooms, the diffuser can optionally be equipped with splitters in the plenum box. Damper blades (optional) in the spigot enable the volume flow rate to be balanced during commissioning. The damper screen is adjusted via the opening for the diffuser face. Alternatively, the wall diffuser CHM can also be pre-equipped for combination with a volume flow limiter VFL. The volume flow limiter is set according to the local system parameters and can be mounted from the room side via the opening for the diffuser face. For an architecturally uniform design, the CHM type can be used as an extract air diffuser or also as a supply and extract air combination.

Specification text

Wall diffusers as supply or extract air diffusers, or as supply and extract air combination, for the supply and extraction of air in ventilation and air conditioning systems. Consisting of a plenum box with spigot for connection to the on-site duct system and a removable front plate. Extract air variants are also available without spigot or without a connection option to the on-site duct system. The front plate serves as a carrier for the front rails, which are integrated into the front plate. Air is directed into the room via manually adjustable air control blades which are integrated into the front rails. The airflow with ceiling influence or direct air flow into the room can be preset at the factory. Optionally, splitters are available for improved cross-talk sound attenuation (can be removed from the room side). In addition, the wall diffusers can also be optionally extended with a finely adjustable volume flow limiter in round design.

Material

Plenum box and spigot made of galvanised sheet steel
Cassette for holding splitters made of galvanised sheet steel (can be removed from the room side)
Splitter frames made of galvanised sheet steel
Front plate made of galvanised sheet steel
Mounting brackets made of galvanised sheet steel
Front rails made of extruded aluminium profiles
Air control blades made of plastic ABS, UL94, V-0
Splitters' sound insulation material made of mineral wool, laminated with glass fibre fabric on surfaces in contact with air

Surfaces

Front plate powder-coated, RAL CLASSIC colours
Front rail anodised (E6 C-0), natural colour
Front rail powder-coated, RAL CLASSIC colours
Air control blades black, similar to RAL 9005
Air control blades white, similar to RAL 9010
Air control blades grey, similar to RAL 9006

Order code

Design-specific

Nominal size

Length [mm]

550, 850, 1000, 1175

Plenum box depth [mm] (without spigot)

345

Nominal width (DN) Spigot [mm]

100, 125

Technical data / design data

Design-specific

Standards and guidelines

Conforms to VDI 6022
Sound power level in air-regenerated noise measured according to EN ISO 5135
Transmission loss according to ISO 7235
Mineral wool according to EN13501 of building material class A1, non-combustible, with RAL quality mark RAL-GZ 388
Mineral wool according to the German Ordinance on Hazardous Substances and Note Q of the European Regulation (EC) No. 1272/2008

Variants

Various front plates with integrated front rails
Optionally with or without splitters
Optionally with standard spigot or prepared for room-side installation of a volume flow limiter
Variants with standard spigot optionally with lip seal and/or damper screen
Optionally with mounting brackets for wall mounting (wall thickness 90 to 130 mm)

Accessories

Volume flow limiter for insertion, e.g. type VFL

Equivalence criteria

Uniform air pattern to reduce dirt deposits on the wall
Air distribution with ceiling influence or directly into the room via manually adjustable air control blades
Splitters can be removed tool-free due to interlocking connection
Glass fibre fabric abrasion-resistant up to 20 m/s
Mineral wool harmless to health due to high biosolubility
Mineral wool with glass fibre fabric, inert to fungal and bacterial growth
Prepared for volume flow limiter that can be mounted from the room side
Volume flow limiter aerodynamically tested and factory set to reference volume flow rate
Limiter adjustable via volume flow rate scale (values in l/s, m³/h and cfm)
Front plate can be mounted tool-free after completion of the installation work

Make of the tender

TROX

Type

CHM

–

PL35

–

1000

345

–

100

VFLS

P1 - RAL 9016

P2 - RAL 9016

1 Type
CHM Wall diffuser

2 Diffuser face
PL35 Face plate with one PURELINE35 front rail, 3 slots
3PL35 Face plate with 3 front rails PURELINE35, 1 slot
3PL18 Face plate with 3 front rails PURELINE18, 1 slot
2PL50 Face plate with 2 front rails PURELINE50, 1 slot
3 System
S Supply air
E Extract air
SE Supply and extract air combination

4 Nominal length [mm]
550, 850, 1000, 1175

5 Plenum box depth [mm]
345 (without spigot)

6 Nominal width (DN) Spigot [mm]
100, 125

7 Number of spigots
0, 1, 2

8 Volume flow rate balancing
No entry: without volume flow balancing
D with damper blade
VFLS prepared for volume flow limiter in the supply air
VFLE prepared for volume flow limiter in the extract air
VFLSE prepared for volume flow limiters in the supply and extract air

9 Lip seal
No entry: without lip seal
LS with lip seal (not with damper blades VFLS, VFLE, VFLSE)

10 Splitters
No entry: without splitters
CT with splitters

11 Airflow settings
HR Airflow with ceiling effect
V direct airflow into the room

12 Attachments
No entry: without fixing bracket for wall mounting
F with fixing brackets for wall mounting

13 Surface front rail
No entry: anodised, E6-C-0 (no colour)
P1 powder-coated, specify RAL CLASSIC colour

14 Surface face plate
No entry: powder-coated RAL 9010 (pure white)
P2 powder-coated, specify RAL CLASSIC colour

15 Colour of air control blades
No entry: similar to RAL 9005 (jet black)
W similar to RAL 9010 (pure white)
G similar to RAL 9006 (white aluminium)Order example: CHM-PL35-SE/1000×345-100/1/VFLS/CT/HR/F/P1-RAL9016/P2-RAL9016/W

Type	CHM
Diffuser face	Front plate with front rail PURELINE35 3-slots
System	Supply and extract air combination
Nominal length [mm]	1000
Plenum box depth [mm]	345
Nominal width (DN) Spigot [mm]	100
Number of spigots	1 (extract air without spigot)
Damper screen for volume flow rate balancing	prepared for volume flow limiter in supply air
Lip seal	without lip seal
Splitters	with splitters
Airflow settings	Airflow with ceiling effect
Fixing	with mounting brackets for wall mounting
Surface front rail	powder-coated, RAL 9016 (traffic white)
Surface front plate	powder-coated, RAL 9016 (traffic white)
Colour of air control blades	similar to RAL 9010 (pure white)

Variants

Standard connection spigot, optionally with lip seal and/or flow adjustment damper

Application

Available spigots:

Standard spigot
Prepared for the installation of a volume flow limiter

Standard spigot

With or without damper screen for flow rate balancing
With or without lip seal (groove in the spigot only for variant with lip seal)
Suitable for circular air ducts according to EN 1506 or EN 13180

Prepared for the installation of a volume flow limiter

Extra deep spigot with larger outer diameter: for inserting a volume flow limiter (e.g. type VFL)
A sleeve or connector is required for connection to the on-site air duct network
The volume flow limiter can be inserted up to approx. 10 cm into the spigot

Application

Number of spigots

Number of spigots	0	1	2
Extract air	￭	￭
Supply air		￭
Supply and extract air combination		￭	￭

Application

Diffuser faces
4 different front diffusers are available from the factory. In addition, project-specific solutions can also be technically implemented.

-PL35: powder-coated front plate with 1 × 3-slot front rail PURELINE35
-3PL35: powder-coated front plate with 3 × 1-slot front rail PURELINE35
-3PL18: powder-coated front plate with 3 × 1-slot front rail PURELINE18
-2PL50: powder-coated front plate with 2 × 1-slot front rail PURELINE50

Installation and commissioning

Preferably for rooms with a clear height up to 4.0 m
Installation in walls and ceiling bulkheads
Horizontal duct connection
If necessary, carry out volume flow rate balancing on damper screen
If necessary, set the maximum volume flow on volume flow limiter
Suitable fastening material must be provided by the qualified personnel according to the structural conditions

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