Skip to content
Linear slot diffuser
Linear slot diffuser

Halton SLL – Linear slot diffuser

Aesthetic design for demanding environments.

  • Adjustable throw pattern, flexibility of orientation with different configurations
  • Ceiling or wall installation, suitable also for continuous “wall to wall” installations

Overview

  • Horizontal or vertical plane jet air supply
  • Suitable also for supply and exhaust
  • Special profile diffuser blade creates a Coanda effect which enables wide range of airflow rates
  • Supply in one or two directions
  • 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

Dimensions


Standard dimensions of the Halton SLL linear slot with standard end caps are presented in the table at the end of this page.

The amount of spigots shown in table below is Halton’s recommendation. On request other amount of spigots and sizes are available. Please contact your sales.

In addition to standard linear slot diffuser sizes, other sizes can be ordered.

The maximum active length of one piece is 2000 mm. The minimun is 372 mm.

Continuous diffusers with modular design are also available for installation lengths greater than 2000 mm.

Halton SLL + Halton PLL

Standard dimensions of the Halton SLL + Halton PLL unit with standard end caps are presented in the table below.

Active
length
Slots F L L1 H H1 K K1 K2 ØD
572 1 54 618 572 255..275 200 67 47 117 1×160
872 1 54 918 872 255..275 200 67 47 117 1×160
1172 1 54 1218 1172 255..275 200 67 47 117 1×160
1472 1 54 1518 1472 255..275 200 67 47 117 2×160
1772 1 54 1818 1772 255..275 200 67 47 117 2×160
572 2 92 618 572 295..315 240 105 85 155 1×200
872 2 92 918 872 295..315 240 105 85 155 1×200
1172 2 92 1218 1172 295..315 240 105 85 155 1×200
1472 2 92 1518 1472 295..315 240 105 85 155 2×200
1772 2 92 1818 1772 295..315 240 105 85 155 2×200
572 3 130 618 572 295..315 240 143 123 193 1×200
872 3 130 918 872 295..315 240 143 123 193 1×200
1172 3 130 1218 1172 295..315 240 143 123 193 1×200
1472 3 130 1518 1472 295..315 240 143 123 193 2×200
1772 3 130 1818 1772 295..315 240 143 123 193 2×200
572 4 168 618 572 345..365 290 181 161 231 1×250
872 4 168 918 872 345..365 290 181 161 231 1×250
1172 4 168 1218 1172 345..365 290 181 161 231 1×250
1472 4 168 1518 1472 345..365 290 181 161 231 2×250
1772 4 168 1818 1772 345..365 290 181 161 231 2×250

Installation hole in the ceiling =  F x (L1+10)

Material

Part Material Finishing Note
Outer frame Aluminium Mill finished,
Epoxy-painted:
White
(RAL 9003 / 30% gloss)
Special colours available.
Epoxy/polyester painted
as option.
End caps /
T profiles
Aluminium Mill finished,
Epoxy-painted:
White
(RAL 9003 / 30% gloss)
Special colours available.
Epoxy/polyester painted
as option.
Inner vanes Aluminium Mill finished,
Epoxy-painted :
White
(RAL 9003 / 30% 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

Accessory Code Description
Plenum PLL Plenum for duct connection
(with or without attenuation material)
Plenum PLD Plenum for duct connection
(without attenuation material)
End caps N1 For modular ceiling, Width = 23 mm (2 pcs)
End caps E1 For modular ceiling, Width = 12.5 mm (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

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

Code description
1.     Mounting bracket
2.     Transversal bar
3.     Screw

The Halton SLL linear slot diffuser is connected directly to the Halton PLL or Halton PLD 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 SLL 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 2000mm. So when length is superior to 2000mm, it is necessary to place side by side several pieces. Some alignement guides are given in order to make the the mounting easier.

Adjustment

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 airflow is determined by measuring the pressure difference with a measurement module.
Measure the differential pressure with a manometer. The airflow rate is calculated according to the following formula:

∆pm      Measured pressure [Pa]
           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
NS > 6xD min 3xD
160 19 22
200 49 32
250 51 51

Adjust the airflow 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

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

Option:
With balancing plenum Halton PLD + MSM/MEM or Halton PLL + 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.

Specification

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

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

The linear slot diffuser has an extruded aluminium outer frame, flow deflection vanes and T- profiles, and polyester-painted to white (RAL 9003) colour.

The diffuser is connected to the ductwork using a plenum with mineral wool as sound attenuation material.
The removable linear slot diffuser is mounted into the plenum with invisible screws.

The plenum comprises an airflow measurement and adjustment module.
The linear diffuser is removable in order to provide access to the measurement and adjustment module in the plenum.

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

Order Code

SLL/S-N-L; SE-ST-FI-CO-ID-ZT

S = Model
S      Supply
E      Exhaust

N = Number of slots
1, 2, 3, 4

L = Active length (mm)
372, +1, .., 50000

Other options and accessories

FP=Front plate option (available from Crépy factory)
N         No
TC       TC Ceiling
FC       Fineline Ceiling

SE = End caps (Y/N)
Y         Yes
N         No

ST = Type of end caps
NA       Not assigned
N1       Standard 23 mm
E1        12,5mm

FI  = Finishing
PN       Painted
MF       Mill finished

CO = Colour
SW     Signal white (RAL 9003)
X         Special colour (RAL xxxx)
N         No painting

ID = Diffuser assembled with plenum (available from Crépy factory)
N         No
Y         Yes

ZT = Tailored product
N        No
Y        Yes (ETO)

Sub products

PLL      Plenum (Linear slot diffusers)
PLD     Plenum (Diffusers)

Code example

SLL/S-1-400, SE=Y, ST=N1, FI=PN, CO=SW, ZT=N

Downloads

Halton SLL – Linear slot diffuser
Data
en
Halton SLL – Lineaarinen rakohajottaja
Data
fi
SLL Diffuseur linéaire à ailettes mobiles
Data
fr
SLL Spaltspridare för montage i undertak eller vägg
Data
se
Halton SLL - fr
Datasheet
fr_FR
748.00 KB
  • Max. file size: 128 MB.

Search