DAYLED
LED TROFFER 2X4
quality performance,
energy
savings,
an economical solution
Project:
PHILIPS DAY-BRITE DAYLED LED TROFFER 2X4
Location:
Catalog No:
Fixture Type:
The Philips Day-Brite DayLED is an LED troffer offering general lighting
distribution excellent for ambient illumination. It features a sealed,
maintenance free, low profile housing, along with a frameless design that
maximizes its luminous aperture and provides a clean, attractive ceiling
appearance.
Mfg:
Qty:
Notes:
Ordering guide
Width
Family
2 2'
LT
example: 1LTG34L840-4-21-UNV
Ceiling
Type
Lumen Package
G Grid
40L
Color
Length
—
DayLED LED
Troffer
47L
56L
71L
4000
nominal
delivered
lumens
4700
nominal
delivered
lumens
5600
nominal
delivered
lumens
7100
nominal
delivered
lumens
­
Accessories (order separately)
• FMA24 – 2'x4' "F" mounting frame for NEMA "F" mounting
482-SR 08/14 840
835
80 CRI,
4000K
80 CRI,
3500K
Lens
Voltage
Options
—
4 4'
21
12
19
184
Pattern 12,
347
.125" nominal UNV Universal
DB-12, .156"
voltage,
nominal
120-277 volt
DB-19, .156"
nominal
Pattern 12,
.125" nominal,
diffuse
See sheet 420-SR for
other options
Canadian
Market
DIM 0-10V dimming
driver
SDIM Step dimming
driver
F1
3/8" flex, 3 wire
18 gauge
GLR1 Fusing, fast
blow
CM
DAYLED
LED TROFFER 2X4
Application
Electrical
• High efficacy long life solid state lighting platform.
• General lighting distribution is excellent for ambient lighting.
• Lumen packages range from 4,000 to 7,100 lumens, providing flexibility to optimize
light levels for a specific application.
• High CRI source provides excellent color rendering.
• LEDs are an excellent source for use with controls since frequent switching does not
affect the life of the light source.
• Suitable for use in clean room application.
• Driver and LED boards are accessible from above. LED boards are individually
replaceable if required.
• ETL listed to UL standards, suitable for damp locations.
• Five-year luminaire warranty including LED boards and driver.
• High efficiency LEDs have 50,000 hour rated life (defined as 70% lumen maintenance.)
• Combinations are available providing up to 93 delivered lumens per Watt.
• Rated for clean room use – meets ISO14644-1 Class 5 (equivalent to Federal Standard
No. 209E Class 100).
• Listed for used in insulated ceilings (Type IC).
Contruction/Finish
• Lower housing includes smooth edges for safe, easy handling.
• Housing is multi-stage phosphate treated for maximum corrosion resistance and finish
coat is high reflectance baked white enamel.
• Sealed housing prevents the entry of dirt and bugs into the luminaire which eliminates
the need for internal cleaning and reduces maintenance.
• T-bar clips are included.
Dimensions
48" O.C. Grid Tees
(1219mm)
482-SR 08/14 page 2 of 5
• Standard sealed configuration does not include a door frame since cleaning and
relamping are not required.
• Frameless design maximizes luminous aperature and provides a clean appearance.
• A variety of lenses are available to tailor the luminaire to the application.
• Contact factory for applications requiring a door frame.
Energy data
3-9/16"
(90mm)
24" O.C. Grid Tees (610mm)
Enclosures
Model
Initial Delivered Lumens
at 25˚C Ambient*
Input
Power
Lumens
Per Watt*
2LTG40L840-4-21
4,034
45W
90LPW
2LTG40L840-4-184
3,896
45W
87LPW
2LTG47L840-4-21
4,658
53W
88LPW
2LTG47L840-4-184
4,521
53W
85LPW
2LTG56L840-4-21
5,598
60W
93LPW
2LTG56L840-4-184
5,492
60W
92LPW
2LTG71L840-4-21
7,067
78W
91LPW
2LTG71L840-4-184
6,935
78W
89LPW
*3500K models are approx. 7% lower.
DAYLED
LED TROFFER 2X4
DayLED LED Troffer 2x4, 4000 nominal delivered lumens, standard lens
Catalog No.
2LTG40L840-4-21
Test No.
29847
S/MH
1.2
Source
45WLED
Lumens/Lamp
4034
Input Watts
45
Comparative yearly lighting energy cost per 1000
lumens – $2.67 based on 3000 hrs. and $.08 pwr
KWH.
The photometric results were obtained in the Philips
Day-Brite laboratory which is NVLAP accredited by the
National Institute of Standards and Technology.
Candlepower
AngleEnd 45
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
LER – 90
171017101710
171617061685
169416811667
166016451631
160015931581
152215201515
142014221428
129112981310
114111531166
975980991
798793798
628612615
473447450
342305324
262211234
206158176
150123130
817174
Photometric values based on test performed in
compliance with LM-79.
Degrees
0-30
0-40
0-60
0-90
2LTG40L840-4-184
Test No.
29717
S/MH
1.2
Source
45WLED
Lumens/Lamp
3896
Input Watts
45
Comparative yearly lighting energy cost per 1000
lumens – $2.76 based on 3000 hrs. and $.08 pwr
KWH.
The photometric results were obtained in the Philips
Day-Brite laboratory which is NVLAP accredited by the
National Institute of Standards and Technology.
Candlepower
AngleEnd 45
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Cross
164416441644
164116331631
161216061602
156515631557
150114971494
141314161415
130713091311
118211861188
104610471052
900897906
757749758
618607615
492478485
384362369
292272278
220197203
153136139
807175
Photometric values based on test performed in
compliance with LM-79.
2LTG47L840-4-21
Test No.
29854
S/MH
1.2
Source
53WLED
Lumens/Lamp
4658
Input Watts
53
Comparative yearly lighting energy cost per 1000
lumens – $2.73 based on 3000 hrs. and $.08 pwr
KWH.
The photometric results were obtained in the Philips
Day-Brite laboratory which is NVLAP accredited by the
National Institute of Standards and Technology.
Photometric values based on test performed in
compliance with LM-79.
482-SR 08/14 page 3 of 5
Candlepower
AngleEnd 45
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Cross
197319731973
197819701944
195619391921
191518981880
185118391823
175717511745
164116411647
148814971511
131813311346
112411311138
921913917
725707710
546520524
399354372
303242269
238181203
173142152
958287
% Luminaire
32.8
52.9
85.3
100.0
AngleEnd 45°Cross
45 211221232147
55 167716341642
65 123911051174
75 12199351042
85 142312481300
EFFECTIVE FLOOR CAVITY REFLECTANCE 20 PER (pfc=0.20)
pcc80
70
50
pw
705030
705030
5030
RCR
0
118118118
115115115
111111
1110
105101
107103 98
98 95
2101
9386
979184
8882
393
8275
908173
7871
484
7366
827265
6964
579
6757
776657
6456
672
5952
705952
5751
768
5546
665446
5346
863
5041
615041
4740
958
4639
574638
4538
1056
4234
544134
4034
LER – 87
Light Distribution
Average Luminance
Degrees
0-30
0-40
0-60
0-90
AngleEnd 45°Cross
45 194919431962
55 165016211642
65 139213121337
75 130211661201
85 140612481318
Lumens % Luminaire
1244
32.0
198450.9
322482.8
3894100.0
Coefficients of Utilization
EFFECTIVE FLOOR CAVITY REFLECTANCE 20 PER (pfc=0.20)
pcc80
70
50
pw
705030
705030
5030
RCR
0
118118118
115115115
111111
1109
105101
107102 98
97 94
2100
9285
969083
8681
392
8173
898072
7770
483
7265
817164
6861
578
6656
766556
6155
671
5851
695750
5648
767
5446
655345
5245
863
5040
604840
4740
958
4638
564536
4436
1055
4134
544134
4034
DayLED LED Troffer 2x4, 4700 nominal delivered lumens, standard lens
Catalog No.
Lumens
1324
2134
3441
4034
Coefficients of Utilization
DayLED LED Troffer 2x4, 4000 nominal delivered lumens, diffuse lens
Catalog No.
Average Luminance
Light Distribution
Cross
LER – 88
Light Distribution
Average Luminance
Degrees
0-30
0-40
0-60
0-90
AngleEnd 45°Cross
45 243524502465
55 193618881896
65 144612831348
75 140810711201
85 166914411529
Lumens % Luminaire
1528
32.8
246352.9
397385.3
4659100.0
Coefficients of Utilization
EFFECTIVE FLOOR CAVITY REFLECTANCE 20 PER (pfc=0.20)
pcc80
70
50
pw
705030
705030
5030
RCR
0
118118118
115115115
111111
1110
105101
107103 98
98 95
2101
9386
979184
8882
393
8275
908173
7871
484
7366
827265
6964
579
6757
776657
6456
672
5952
705852
5751
768
5546
665446
5346
863
5041
615041
4740
958
4639
574638
4538
1056
4234
544134
4034
DAYLED
LED TROFFER 2X4
DayLED LED Troffer 2x4, 4700 nominal delivered lumens, diffuse lens
Catalog No.
2LTG47L840-4-184
Test No.
29708
S/MH
1.2
Source
53WLED
Lumens/Lamp
4521
Input Watts
53
Comparative yearly lighting energy cost per 1000
lumens – $2.82 based on 3000 hrs. and $.08 pwr
KWH.
The photometric results were obtained in the Philips
Day-Brite laboratory which is NVLAP accredited by the
National Institute of Standards and Technology.
Candlepower
AngleEnd 45
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Cross
190219021902
189218961883
185918671851
180518131796
172717411727
163216421635
150615211511
136413761369
120612161213
104210481048
876873874
718708710
569558560
447424428
341318321
257231236
176158161
958488
Photometric values based on test performed in
compliance with LM-79.
LER – 85
Light Distribution
Average Luminance
Degrees
0-30
0-40
0-60
0-90
AngleEnd 45°Cross
45 225722702270
55 191718911896
65 162015371551
75 152113671397
85 166914761546
Coefficients of Utilization
EFFECTIVE FLOOR CAVITY REFLECTANCE 20 PER (pfc=0.20)
pcc80
70
50
pw
705030
705030
5030
RCR
0
118118118
115115115
111111
1109
105101
107102 98
97 94
2100
9285
969083
8681
392
8173
898072
7770
483
7265
817164
6861
578
6656
766456
6155
671
5851
695750
5648
767
5446
655345
5245
863
5040
604840
4740
958
4638
564536
4436
1055
4134
544134
4034
DayLED LED Troffer 2x4, 5600 nominal delivered lumens, standard lens
Catalog No.
2LTG56L840-4-21
Test No.
29832
S/MH
1.2
Source
60WLED
Lumens/Lamp
5598
Input Watts
60
Comparative yearly lighting energy cost per 1000
lumens – $2.58 based on 3000 hrs. and $.08 pwr
KWH.
The photometric results were obtained in the Philips
Day-Brite laboratory which is NVLAP accredited by the
National Institute of Standards and Technology.
LER – 93
Candlepower
Light Distribution
Average Luminance
AngleEnd 45
Cross
0
236523652365
5
236523572341
10
233823292313
15
228522752263
20
220922012193
25
209821032099
30
195919681976
35
178117971816
40
157215971615
45
134313631378
50
110011021111
55
870851861
60
653620637
65
482427461
70
370290323
75
288221245
80
207172185
85
109100104
Degrees
0-30
0-40
0-60
0-90
AngleEnd 45°Cross
45 290929522985
55 232322722299
65 174715481671
75 170413081450
85 191617571828
Photometric values based on test performed in
compliance with LM-79.
2LTG56L840-4-184
Test No.
29730
S/MH
1.2
Source
60WLED
Lumens/Lamp
5492
Input Watts
60
Comparative yearly lighting energy cost per 1000
lumens – $2.61 based on 3000 hrs. and $.08 pwr
KWH.
The photometric results were obtained in the Philips
Day-Brite laboratory which is NVLAP accredited by the
National Institute of Standards and Technology.
Photometric values based on test performed in
compliance with LM-79.
482-SR 08/14 page 4 of 5
Lumens % Luminaire
1831
32.7
295252.7
476985.2
5598100.0
Coefficients of Utilization
EFFECTIVE FLOOR CAVITY REFLECTANCE 20 PER (pfc=0.20)
pcc80
70
50
pw
705030
705030
5030
RCR
0
118118118
115115115
111111
1110
105101
107103 98
98 95
2101
9386
979184
8882
392
8275
908173
7871
484
7366
827265
6964
579
6757
776657
6356
672
5952
705851
5751
768
5546
665446
5346
863
5041
615041
4740
958
4639
574638
4538
1056
4234
544134
4034
DayLED LED Troffer 2x4, 5600 nominal delivered lumens, diffuse lens
Catalog No.
Lumens % Luminaire
1441
31.9
229850.8
373882.7
4519
100.0
LER – 92
Candlepower
Light Distribution
Average Luminance
AngleEnd 45
Degrees
0-30
0-40
0-60
0-90
AngleEnd 45°Cross
45 274427422753
55 233422802304
65 195318451874
75 182916511687
85 195117751863
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Cross
232123212321
231623122297
227522712258
221122052195
211721152109
199719991996
184318501850
167116681675
147514761486
126712661271
106710541062
874854863
693674675
539509517
413381390
309279285
213189195
111101106
Lumens % Luminaire
1758
32.0
280151.0
454882.8
5490100.0
Coefficients of Utilization
EFFECTIVE FLOOR CAVITY REFLECTANCE 20 PER (pfc=0.20)
pcc80
70
50
pw
705030
705030
5030
RCR
0
118118118
115115115
111111
1109
105101
107102 98
97 94
2100
9285
969083
8681
392
8173
898072
7770
483
7265
817164
6861
578
6656
766556
6155
671
5851
695850
5650
767
5446
665345
5245
863
5040
604840
4740
958
4638
564536
4436
1055
4134
544134
4034
DAYLED
LED TROFFER 2X4
DayLED LED Troffer 2x4, 7100 nominal delivered lumens, standard lens
Catalog No.
2LTG71L840-4-21
Test No.
29838
S/MH
1.2
Source
76WLED
Lumens/Lamp
7067
Input Watts
78
Comparative yearly lighting energy cost per 1000
lumens – $2.64 based on 3000 hrs. and $.08 pwr
KWH.
The photometric results were obtained in the Philips
Day-Brite laboratory which is NVLAP accredited by the
National Institute of Standards and Technology.
Candlepower
AngleEnd 45
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
Cross
297729772977
298129702948
294229312911
288228712849
278427742757
265126512643
247524812489
224622722287
199320222040
169617141742
138513901403
109210761090
827791807
602541577
460372415
363278310
261216232
138125135
Photometric values based on test performed in
compliance with LM-79.
LER – 91
Light Distribution
Average Luminance
Degrees
0-30
0-40
0-60
0-90
AngleEnd 45°Cross
45 367437133773
55 291628732911
65 218219612091
75 214816451834
85 242521972372
Coefficients of Utilization
EFFECTIVE FLOOR CAVITY REFLECTANCE 20 PER (pfc=0.20)
pcc80
70
50
pw
705030
705030
5030
RCR
0
118118118
115115115
111111
1110
105101
107103 98
98 95
2101
9386
979184
8882
392
8275
908173
7871
484
7366
827265
6964
579
6757
776557
6356
672
5952
705851
5751
768
5546
665446
5346
863
5041
615041
4740
958
4638
574638
4538
1056
4234
544134
4034
DayLED LED Troffer 2x4, 7100 nominal delivered lumens, diffuse lens
Catalog No.
2LTG71L840-4-184
Test No.
29724
S/MH
1.2
Source
76WLED
Lumens/Lamp
6935
Input Watts
78
Comparative yearly lighting energy cost per 1000
lumens – $2.70 based on 3000 hrs. and $.08 pwr
KWH.
The photometric results were obtained in the Philips
Day-Brite laboratory which is NVLAP accredited by the
National Institute of Standards and Technology.
Lumens % Luminaire
2309
32.7
372352.7
601885.1
7069100.0
LER – 89
Candlepower
Light Distribution
Average Luminance
AngleEnd 45
Cross
0
292529252925
5
291929132897
10
286928632850
15
279127812770
20
267126712660
25
251725172515
30
232623342332
35
211021122118
40
185918671879
45
160316041614
50
134913321338
55
109810811092
60
876844852
65
681648653
70
522481490
75
393352356
80
270238245
85
141129136
Degrees
0-30
0-40
0-60
0-90
AngleEnd 45°Cross
45 347234743496
55 293228872916
65 246823482367
75 232620832107
85 247822672390
Photometric values based on test performed in
compliance with LM-79.
© 2014 Koninklijke Philips N.V. All rights reserved.
Specifications are subject to change without notice.
www.philips.com/luminaires
482-SR 08/14 page 5 of 5
Lumens % Luminaire
2217
32.0
353451.0
574282.8
6932100.0
Coefficients of Utilization
EFFECTIVE FLOOR CAVITY REFLECTANCE 20 PER (pfc=0.20)
pcc80
70
50
pw
705030
705030
5030
RCR
0
118118118
115115115
111111
1109
105101
107102 98
97 94
2100
9285
969083
8681
392
8173
898072
7770
483
7265
817164
6861
578
6656
766556
6155
671
5851
695750
5648
767
5446
655345
5245
863
5040
604840
4740
958
4638
564536
4436
1055
4134
544134
4034
Philips Lighting
North America Corporation
200 Franklin Square Drive
Somerset, NJ 08873
Tel. 855-486-2216
Imported by: Philips Lighting,
A division of Philips Electronics Ltd.
281 Hillmount Rd,
Markham, ON Canada L6C 2S3
Tel. 800-668-9008