TROX TLG-LOV Circular Diffuser User Manual

User ManualTLG-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

Contents hide

1 APPLICATION

2 QUICK SELECTION

3 ACOUSTIC DATA

4 CALCULATION DIAGRAMS

10 Documents / Resources

10.1 References

11 Related Posts

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

TLG- ØV	[m³/h]
Dim.	25 dB(A)	30 dB(A)	35 dB(A)
100	87	104	123
125	144	167	194
160	238	273	312
200	328	378	436
250	560	650	754
315	825	962	1122

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

TLG- ØV	Luna	m3 /h
Dim.	Dim.	25 dB(A)	30 dB(A)	35 dB(A)
100	100-100	67	81	97
125	100-125	77	103	133
	125-125	94	112	133
160	125-160	94	130	169
	160-160	148	176	216
200	160-200	162	198	245
	200-200	216	252	295
250	200-250	238	295	392
	250-250	324	371	540
315	250-315	295	371	475
	315-315	504	572	652

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

TLG-LØV	Demping [dB]
Dim.	63	125	250	500	1k	2k	4k	8k
100	26	18	13	7	3	2	3	6
125	22	16	11	6	1	0	2	4
160	19	14	11	4	1	0	3	4
200	16	12	7	3	0	0	2	3
250	16	10	5	1	0	0	1	2
315	15	7	4	1	0	0	1	2

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

Documents / Resources

TROX TLG-LOV Circular Diffuser [pdf] User Manual
TLG-LOV Circular Diffuser, TLG-LOV, Circular Diffuser, Diffuser

References

User Manual