SLM - Linear slot diffuser

Linear slot diffuser for ceiling or wall installation

Larger slot diffuser for higher air flow.

  • Horizontal or vertical plane jet air supply
  • Suitable for supply and exhaust
  • Special profile diffuser blade creates a Coanda effect which enables wide range or air flow rates
  • Supply in one or two directions
  • The product can handle big air flow rates with low noise level
  • Ceiling or wall installation, suitable also for continuous "wall to wall" installations
  • Adjustable throw pattern, flexibility of orientation with different configurations
  • Detachable diffuser allows cleaning of the terminal unit and ductwork
     

ACCESSORIES

  • Plenum with a circular duct connection(s) D160...250mm with rubber gasket
  • Plenum options with measurement and adjustment functions
  • Sound insulation for plenum

Halton-brand ceiling diffuser, type SLM, with one to four slots, suitable for variable air flow

Excellent Coanda effect provided with a wide range of air flow rates.

Each air pattern adjustment section shall comprise two flow deflection vanes.

The supply air pattern shall be directable by adjusting the flow deflection vanes without any change in the appearance of the diffuser.

The linear slot diffuser shall have an extruded aluminium outer frame, flow deflection vanes and T- profiles, and be anodised or polyester-painted to white (RAL 9010) colour.

The diffuser shall be connected to the ductwork using a plenum with mineral wool as sound attenuation material.

The removable linear slot diffuser shall be mounted into the plenum with invisible screws.

The plenum shall comprise an airflow measurement and adjustment module.

The linear diffuser shall be removable in order to provide access to the measurement and adjustment module in the plenum.

Flow deflection vanes and T-profiles shall be easily removable for access to the plenum.

Introduction

Halton SLM

Linear Slot Diffuser


 

  • Suitable for supply and exhaust
  • Adjustable throw pattern, flexibility of orientation with different configurations with slots adjustable separately
  • Special profile diffuser blade creates a Coanda effect which enables wide range or air flow rates
  • Diffuser big airflow, the product can handle big airflow rates with low noise level
  • Ceiling or wall installation, suitable also for continuous “wall to wall”  installation
  • Detachable diffuser allows cleaning of the terminal unit and ductwork

Accessories

  • Plenum Halton PLM with a large volume to improve the air diffusion quality and have a low noise level.
  • Possible to add attenuation (Halton PLM) on 2 or 5 sides
  • Plenum Halton PMM with right sides more economic
  • Plenum with a circular duct connection(s) D160…250 mm with rubber gasket
  • Plenum option: measurement and adjustment airflow module MSM (only for supply)
  • Staff brackets
     

 

Dimensions

Dimensions

Halton SLM

'
 
 

Halton SLM + Halton PLM



 

 

 

Standard dimensions of the Halton SLM + Halton PLM are presented in the table below : 

Active
length
Slots F L L1 H H1 K K1 K2 ØD
572 1 64 636 572 275..295 200 90 59 130 1x160
872 1 64 936 872 275..295 200 90 59 130 1x160
1172 1 64 1236 1172 275..295 200 90 59 130 1x160
1472 1 64 1536 1472 275..295 200 90 59 130 2x160
1772 1 64 1836 1772 275..295 200 90 59 130 2x160
572 2 114 636 572 315..335 240 141 109 181 1x200
872 2 114 936 872 315..335 240 141 109 181 1x200
1172 2 114 1236 1172 315..335 240 141 109 181 1x200
1472 2 114 1536 1472 315..335 240 141 109 181 2x21000
1772 2 114 1836 1772 315..335 240 141 109 181 2x200
572 3 165 636 572 365..385 290 192 160 232 1x200
872 3 165 936 872 365..385 290 192 160 232 1x200
1172 3 165 1236 1172 365..385 290 192 160 232 1x200
1472 3 165 1536 1472 365..385 290 192 160 232 2x200
1772 3 165 1836 1772 365..385 290 192 160 232 2x200
572 4 216 636 572 365..385 290 243 211 283 1x250
872 4 216 936 872 365..385 290 243 211 283 1x250
1172 4 216 1236 1172 365..385 290 243 211 283 1x250
1472 4 216 1536 1472 365..385 290 243 211 283 2x250
1772 4 216 1836 1772 365..385 290 243 211 283 2x250


Installation hole for the ceiling : F x (L1+10)
 

Material

Material


Halton SLM

 Part  Material  Finishing  Note
 Outer frame  Aluminium  Mill finished,
 Anodised or
 Epoxy-painted
 White
 (RAL 9010/ 50% gloss)
 Special colours available
 Epoxy/Polyester painted
 as option
 End caps /
 T profiles
 Aluminium  Mill finished,
 Anodised or
 Epoxy-painted
 White
 (RAL 9010/ 50% gloss) 
 Special colours available
 Epoxy/Polyester painted
 as option
 Inner vanes  Aluminium  Mill finished,
 Anodised or
 Epoxy-painted
 White
 (RAL 9010/ 50% gloss) 
 Special colours available
 Epoxy/Polyester painted
 as option
 Flow deflection
 vanes
 (for supply
 application)
 Aluminium  Mill finished  Special colours available
 Epoxy/Polyester painted
 as option
 Plenum  Galvanised
 steel
   


Accessories

Accessories


Halton SLM 

 Accessory Code  Description
 Plenum PLM  Plenum for duct connection
 (with or without attenuation material)
 Plenum PMM  Plenum for duct connection
 (without attenuation material)
 End caps  N2, O3  For modular ceiling, Width = 23 mm (1 or 2 pcs)
 Installation brackets    For installation of the diffuser with a PLL or PLD plenum
 Staff brackets    For installation of the diffuser without plenum

Special end caps are available for modular ceilings.
 

Function

Function


Halton SLM

 



Supply air is supplied through the linear slots of the diffuser horizontally along the ceiling surface or vertically into the occupied zone.
For wall installation, the plane jet air is supplied horizontally or directed to the ceiling surface, which increases the throw length.

For an exhaust application, the diffuser is supplied without flow control vanes.
 

Installation

Installation


Halton SLM

 

  1.   Mounting bracket
  2.   Transversal bar
  3.   Screw

The Halton SLM linear slot diffuser is connected directly to the Halton PLM or Halton PMM plenum.
The plenum is installed into the suspended ceiling with M8 drop rods (not included in the delivery) and connected to the ductwork.

Remove the T-profiles of the Halton SLM by pulling them gently, in order to access the transversal bars located behind the profiles.
Fit the installation brackets into the grooves of the plenum and secure with the screws supplied with the unit.
Put screws into the holes of the transversal bars. Screw on until the diffuser is flush to the ceiling.
Replace the T-profiles.

The unit can be installed without plenum using the staff brackets. Those pieces are available as accessory (2 by slad or by linear meter).
 

String course mounting

The maximum length is 2000 mm. So when length is superior to 2000 mm, it is necessary to place side by side several pieces. Some alignement guides are given in order to make the the mounting easier.

Adjustment

Adjustment


Halton SLM 

The air pattern can be changed through 180° by adjusting the flow deflection vanes using a screwdriver. Each deflection vane section can be individually adjusted without removing the T-profiles in order to provide flexibility in supply air pattern orientation.
Diffusers are delivered unadjusted with the flow deflection vanes in the open position.
 

 

To aid in adjusting and measuring the air flow rate, it is recommended that the diffuser is connected to a plenum equipped with a MSM.
The supply air flow is determined by measuring the pressure difference with a measurement module.
Measure the differential pressure with a manometer. The air flow rate is calculated according to the following formula:
 

    

∆Pm       Measured pressure [Pa]
k            Factor given as a function of mounting and diameter
Qv         Airflow rate [l/s]

 

The k factor for installations with different safety distances (distance of other items from the MSM):

 

  Safety distance
Spigot (ØD) > 6xD min 3xD
160 19 22
200 49 32
250 51 51


Adjust the air flow rate by rotating the control spindle until the desired setting is achieved.
Lock the damper in position with a screw.
Replace the tubes and spindle in the plenum, and return the linear diffuser to its position.

Servicing

Servicing


Halton SLM 

Remove the T-profiles.
Remove the linear diffuser by unscrewing the screws of the transversal bars.
Clean the parts by wiping them with a damp cloth.
Push the linear diffuser back into place by screwing the transversal bars to the installation brackets.
 

Option: with balancing plenum PLM + MSM/MEM or PMM + MSM/MEM

Remove the measurement and adjustment module by gently pulling the shaft; (not the control spindle or measurement tubes!).
Wipe the parts with a damp cloth, instead of immersing in water.
Reassemble the measurement and adjustment module by pushing the shaft back into place until the module meets the stopper.
Push the linear diffuser back into place by screwing the transversal bars to the installation brackets.
 

Technical specification

Technical specification

  

Halton-brand ceiling diffuser, type Halton SLM, with one to four slots, suitable for variable air flow

Excellent Coanda effect provided with a wide range of air flow rates.
Each air pattern adjustment section shall comprise two flow deflection vanes.
The supply air pattern shall be directable by adjusting the flow deflection vanes without any change in the appearance of the diffuser.

The linear slot diffuser shall have an extruded aluminium outer frame, flow deflection vanes and T- profiles, and be anodised or polyester-painted to white (RAL 9010) colour.

The diffuser shall be connected to the ductwork using a plenum with mineral wool as sound attenuation material.

The removable linear slot diffuser shall be mounted into the plenum with invisible screws.
The plenum shall comprise an airflow measurement and adjustment module.

The linear diffuser shall be removable in order to provide access to the measurement and adjustment module in the plenum.
Flow deflection vanes and T-profiles shall be easily removable for access to the plenum.
 

Product Code

Product code


SLM/S-N-L

S = Model
     
S    Supply
      E    Exhaust

N = Number of slots
      
1, 2, 3, 4

L = Active Length
      
400, +1, .., 50000

 

Other options and accessories

SE = End caps
         Y        Yes
         N        No

ST = Type of end caps
         NA      Not assigned
         N2      Standard (32 mm)
         O3      Only one end cap (32 mm)

FI = Finishing
        
AN      Anodised (class 10 um)
        PN      Painted
        MF      Mill finished

CO = Colour
        
W       White
         X        Special colour
         N        No painting

ZT = Tailored products
        
N        No


Sub products

        PLM     Plenum
        PMM    Plenum


Code example

        SLM/S-1-400, SE=Y, ST=N2, FI=AN, CO=N, ZT=N
 


 

Downloads & Media

Halton SLM - fr
Type
Datasheet
Language
French (France)
Size
956.4 kB
Halton SLM - gb
Type
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English (United Kingdom)
Size
573.5 kB
Halton SLM - dk
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Danish (Denmark)
Size
572.4 kB
Halton SLM - nl
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Language
Dutch (Netherlands)
Size
573.4 kB
Halton SLM - se
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Language
Swedish (Sweden)
Size
574.0 kB
Halton SLM - fi
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Language
Finnish (Finland)
Size
573.4 kB
Halton SLM - ru
Type
Datasheet
Language
Russian (Russia)
Size
593.4 kB