TROX TLG-LOV Circular Diffuser User Manual

User Manual TLG-LØV
Circular diffuser
GB0618
09.21

• Design-protected LØV perforation
• Excellent low temperature resistance
• Adjustable slot height
• Low-profile design
• Data provided with Luna plenum box installed
• Box lined with sound absorber in polyester

APPLICATION

TLG-LØV is a circular supply diffuser for ceiling mounting. TLG-LØV offers excellent induction, and is suitable for both constant and variable air flow rates.
DESIGN
TLG-LØV features a front panel with LØV perforation and adjustable slot height.”
MATERIALS AND SURFACE COATING
The diffuser and ceiling plate are in a steel design, and the connection collar is equipped with an EPDM rubber gasket. All internal and external diffuser elements come in a RAL 9003 – gloss 30 finish. Other colours are available on request.

QUICK SELECTION

Table 1: The table shows air flow rates at given sound power levels.Maximum slot height and valve fitted directly in straight duct.

ORDERCODE,TLG-LØV(TLG-LOEV)

Example: TLG- LOEV-0-125-0
Explanation: TLG-LOEV dim. Ø125
ORDER CODE, Luna Example:
Luna-0-0-125-125
Explanation:
Luna plenum box with inlet Ø125 and outlet Ø125.
DIMENSIONS AND WEIGHT, TLG-LØV

Dim.| A| B| J| T| Groove dim.| Weight diffuser [kg]
---|---|---|---|---|---|---
100| 209| 99| 40| 34-45| 105| 0,7
125| 238| 124| 35| 34-45| 130| 0,9
160| 279| 159| 45| 36-50| 165| 1,1
200| 334| 199| 45| 38-52| 205| 1,4
250| 419| 249| 40| 52-72| 255| 2,1
315| 525| 314| 40| 52-72| 325| 3

Table 2 APPLICATION
The Luna plenum box is recommended for improved sound attenuation, and works as an adjustment and measurement unit. Luna is a rectangular box equipped with a removable damper which provides access to the connecting duct. The damper can be secured in any position required.
DESIGN
Luna plenum box features a damper and measuring outlet for commissioning. It is insulated with sound absorber in polyester and is available with one or two dimensional changes between inlet and outlet.
Furthermore, the box can be delivered with external condensation insulation [I].
A lowprofile design [UI] is also available, and for this design a reduction in capacity of approx. 20% will apply. The distance between diffuser and box can be increased by up to 35 cm without extending the wire and measuring tube.
MATERIALS AND SURFACE COATING
Luna is supplied a galvanised finish, and with all four internal walls lined with sound absorber in polyester. The connection collar is fitted with an EPDM rubber gasket.
QUICK SELECTION

Table 3: The table provides air flow rates at given sound power levels and 50 Pa total pressure loss.
DIMENSIONS AND WEIGHT, Luna****

Dim.| D| DA| B| H| H1| H2| L| L1| L2| Weight (kg) Luna
---|---|---|---|---|---|---|---|---|---|---
100-100| 99| 102| 220| 122| 180| 58| 325| 292| 127| 2,3
100–125| 99| 127| 220| 122| 180| 58| 325| 292| 127| 2,3
100–160| 99| 162| 220| 122| 180| 58| 360| 309| 145| 2,4
125–125| 124| 127| 250| 147| 205| 58| 360| 334| 145| 2,4
125–160| 124| 162| 250| 147| 205| 58| 360| 334| 145| 2,9
125–200| 124| 202| 250| 147| 205| 58| 400| 354| 165| 3,1
160–160| 159| 162| 340| 182| 240| 58| 403| 390| 167| 4,1
160–200| 159| 202| 340| 182| 240| 58| 403| 390| 167| 4,2
160–250| 159| 252| 340| 182| 285| 103| 453| 415| 192| 4,6
200–200| 199| 202| 380| 222| 280| 58| 453| 457| 190| 5,7
200–250| 199| 252| 380| 222| 325| 103| 453| 457| 190| 5,7
200–315| 199| 317| 380| 222| 325| 103| 515| 487| 222| 6,1
250–250| 249| 252| 390| 272| 375| 103| 515| 537| 222| 7,4
250–315| 249| 317| 390| 272| 375| 103| 515| 537| 222| 7,4
315–315| 314| 317| 500| 337| 440| 103| 600| 654| 255| 11

Table 4

ACOUSTIC DATA

The diagrams provide a summary of the A-weighted sound power level from diffuser, LWA . Correction factors in table 6, page 8, are used to calculate emitted sound power level at the respective frequencies, LW = LWA + KO. A room with absorption equivalent to 10m² Sabine will have a sound pressure level which is 4 dB below the sound power level emitted.
The diagrams assume maximum slot height.

Example:

TLG-LØV with Luna 125-125. Desired air flow rate: 35 l/s.

From diagram 4 we find that LWA  = 31 dB(A) with damper open and 20

Pa total pressure loss. We would like to find the following data:

a) Emitted sound power level at 250 Hz

b) A-weighted sound pressure level in an office

c) A-weightedsoundpressurelevelinanofficeat50Patotal

 pressure loss (i.e. 30 Pa choking with the unit’s damper)

 a) The correction factor is 2 dB. Emitted sound power level at 250 Hz is thus: LW = LWA  + KO =  31 + (2)= 33 dB

 b) If we assume a room absorption equivalent to 10m² Sabine,A-weightedsoundpressurelevelwillbe: 31 – 4 = 27 dB(A)

c) Tracing the 35 l/s line in the diagram up to 50 Pa   give sus areading of 33 dB(A)= increase of 2dB, and  A-weighted sound pressure level will thus be 29 dB(A)

CALCULATION DIAGRAMS

Static sound attenuation incl. end reflection for TLG-LØV with LunaCorrection factor [KO], TLG-LØV with LunaStatic sound attenuation incl. end reflection, TLG-LØV

Correction factor [KO], TLG-LØV

TLG-LØV

|

KO [dB]

---|---
Dim.| 63| 125| 250| 500| 1k| 2k| 4k| 8k
100| -3| -1| -6| -6| -5| -5| -13| -22
125| -6| -4| -6| -6| -6| -5| -12| -23
160| 1| -1| -3| -4| -5| -6| -16| -21
200| 0| 0| -5| -6| -5| -5| -16| -24
250| 0| -5| -5| -4| -3| -7| -20| -21
315| -3| -7| -8| -6| -3| -6| -19| -26

THROW LENGTHS
FLOW PATTERN

THROW LENGTHS

Velocities for the vertical jet produced by TLG-LØV-S have been measured. For isothermal conditions, the vertical throw length can be found by using diagram 19.
In the event of overheated air (heating), diagrams 20 and 21 are used to find the jet inflection point for respectively 5° or 10° overheating relative to the indoor air temperature.

INSTALLATION

When mounted in fixed ceiling or inserted in ceiling plate, TLG-LØV is attached by means of two mounting brackets as shown in fig. 5, or the diffuser is screwed on to the box outlet. If a Luna plenum box is used, the unit is attached to the rear of the support bracket by means of threaded rod or strap (fig. 5).

COMMISSIONING

During commissioning, the diffuser front must be fitted. Measuring tube and adjustment wire are pulled through the slot. The damper is secured by using a clamping nut on the wire, tighten the clamping nut properly so the damper not change position. Correction factors for calculation of air flow rates are provided on the label inside the diffuser, or can be found in our commissioning guide at our website: www.trox.no.

MAINTENANCE

The diffuser can be cleaned by using a damp cloth. When cleaning the duct network, the diffuser front must be removed in order to gain access to the duct. In Luna is used, diffuser plate and damper are to be removed in order to gain free access to the duct.

ENVIRONMENT

Enquiries regarding product declaration can be directed to our sales team, or information can be found at www.trox.no
TLG-LØV is developed and manufactured by:
The company reserves the right to make amendments without prior notice.

Head Office:
TROX Auranor Norge AS, Auranorvegen 6, NO-2770 Jaren
Telephone: +47 61 31 35 00 www.trox.no
TROX Auranor Norge AS
Auranorvegen 6
NO-2770 Jaren
Telephone +47 61 31 35 00
E-mail: firmapost-no@troxgroup.com
www.trox.no

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