AT2
ARCHITECTURAL LED TROFFER – CURVED DEEP CENTER
CATALOG #:
TYPE:
PROJECT:
2x2 | 2x4
NOTES:
-
AT2
EXAMPLE
t
SERIES
2 4
t t
-
NOM. NOM.
W.L.
L70/835
t
t
-
D
t
-
OPTIONS
t
LUMEN
CRI &
SHIELDING
OPTIONS
PACKAGE CCT
CROSS SECTION
-
DIM
t
DRIVER
-
UNV
t
VOLTAGE
FEATURES
4-3/8”
Matte white paint and diffuse lens
combination provide pleasing architectural
aesthetics with non-glare reflective
surfaces
XX
Quiet and smooth illumination for visual
comfort
XX
Hinged door frame with optical assembly
swings down to allow easy access from
room side of fixture
XX
Optional gasketed acrylic lens adds extra
layer of protection
XX
Available with decorative inserts to
customize center lens
XX
Integral occupancy and daylight sensor
available
XX
Rated >60,000 hours at 70% lumen
maintenance (L70)
XX
Minimum 82 CRI; 3000K, 3500K, or 4000K CCT
XX
Rated for 25°C ambient operating
temperature.
XX
This fixture is proudly made in the USA
XX
23-5/8”
ORDERING INFORMATION
SERIES
OPTIONS
AT2
Architectural LED Troffer – Curved Deep Center
NOMINAL WIDTH
2
2’
EM/10W
EQCLIPS
OCC__
(L__)
NOMINAL LENGTH
2
4
2’
4’
SS
LED PACKAGE
AMW
NEMA F
Example: L70/835
Lumen
Package
L20
L30
L40
L50
L30
L40
L55
L70
L85
L100
NOMINAL LUMENS
D
2x2
2,000
3,000
4,000
5,000
2x4
3,000
4,000
5,500
7,000
8,500
10,000
P
1,700
2,400
3,200
4,000
2,600
3,400
4,600
6,000
7,200
9,000
MINIMUM CRI & CCT
830 = 82 CRI, 3000K
835 = 82 CRI, 3500K
840 = 82 CRI, 4000K
WATTAGE
21
31
44
50
31
42
59
70
86
99
10-watt emergency LED driver (120V-277V only)
Earthquake clips (4 per fixture)
Integral occupancy and daylight sensor (not
available with SS option):
OCCPH LRI1655 120/277
Additional lower lumen packages available.
Specify in increments of 100 nominal lumens.
Option must be specified with next higher lumen
package.
Example: 5,000 nominal lumens =
AT2-24-L55/835-D-(L50).
Gasketed clear flat acrylic lens (not available
with OCC option)
Anti-microbial white finish
NEMA Type “F” flange kit, factory-installed
DRIVER
Additional dimming drivers available, see Technical Info.
DRV
Driver prewired for non-dimming applications
DIM
Driver prewired for 0-10V low-voltage dimming
applications
VOLTAGE
120
277
UNV
347
120V
277V
120-277V
347V (not available with EM drivers)
Nominal lumen output based on 3500 CCT. Actual lumens may vary
+/-5%. See specific fixture performance data. Additional LED lumen
packages available, see options.
SHIELDING
D
P
Diffuse matte acrylic center
Perforated center
DIFFUSE CENTER DECORATIVE INSERTS
Only available with D shielding option. See page 3 for details
DI1
Triple wave
DI2
Brushed metal
DI3
Elliptical Perf
DI4
Circles
DI5
Stripes
DI6
Tri-Pyramid
H.E. Williams, Inc.
Carthage, Missouri
w w w.hew.com
417-358-4065
Recessed
Page 1 of 3
AT2
ARCHITECTURAL LED TROFFER – CURVED DEEP CENTER
2x2 | 2x4
PHOTOMETRY
60°
40°
0°
20°
0°
90°
Horizontal Angle
0º
45º
90º
1521.
1521.
1521.
1517.
1510.
1508.
1429.
1434.
1452.
1269.
1293.
1331.
1054.
1096.
1140.
812.
877.
894.
591.
645.
665.
371.
416.
449.
182.
221.
240.
36.
55.
40.
0.
0.
0.
Zonal
Lumens
144.2
407.6
601.2
692.0
673.7
568.2
409.7
230.3
48.0
Zone
Lumens
% Fixture
0 - 30
0 - 40
0 - 60
0 - 90
0 - 180
1153.
1845.
3087.
3775.
3775.
30.5
48.9
81.8
100.0
100.0
Zone
Lumens
% Fixture
0 - 30
0 - 40
0 - 60
0 - 90
0 - 180
2112.
3371.
5625.
6903.
6903.
30.6
48.8
81.5
100.0
100.0
AT2-24-L70/835-D-DIM-UNV Report #: 18891.0; 06/10/15 | Total Luminaire Output: 6903 lumens; 70 Watts
Efficacy: 98.8 lm/W | 82 CRI; 3500K CCT | IES Spacing Criteria: End: 1.1, Across: 1.2, Diagonal: 1.1
40°
IMPORTANT:
0°
20°
0°
90°
Vertical
Angle
0
5
15
25
35
45
55
65
75
85
90
Horizontal Angle
0º
45º
90º
2850.
2850.
2850.
2823.
2823.
2826.
2639.
2666.
2697.
2286.
2348.
2409.
1920.
2010.
2077.
1510.
1609.
1680.
1055.
1138.
1186.
681.
752.
790.
343.
413.
436.
92.
112.
101.
0.
0.
0.
Zonal
Lumens
LUMEN SUMMARY
90°
80°
60°
Electrostatic sensitive unit. Observe precautions
when handling.
Vertical
Angle
0
5
15
25
35
45
55
65
75
85
90
LUMEN SUMMARY
90°
80°
CANDLEPOWER DISTRIBUTION
Housing – Precision die-formed 22-gauge
C.R.S.
Door Frame – Hinged, flat, extruded
aluminum door frame with optical assembly.
Shielding – Diffuse polycarbonate lens and
acrylic center standard.
Finish – 95% reflective white polyester
powder coat bonded to phosphate-free, multistage pretreated metal. All parts painted after
fabrication to facilitate installation, increase
efficiency, and inhibit corrosion.
Electrical – High quality mid-power LED
boards. L70 >60,000 hours per IES TM-21.
Mounting – NEMA Type “G” standard, NEMA
Type “F” available.
Labels – cETLus conforms to UL STD 1598
and UL STD 8750. Certified to CAN/CSA STD
C22.2 No. 250.0. Suitable for damp locations.
Warranty – 5-year limited warranty, see hew.com/warranty.
CANDLEPOWER DISTRIBUTION
SPECIFICATIONS
AT2-22-L40/835-D-DIM-UNV Report #: 18885.0; 06/02/15 | Total Luminaire Output: 3775 lumens; 43 Watts
Efficacy: 87.7 lm/W | 82 CRI; 3500K CCT | IES Spacing Criteria: End: 1.2, Across: 1.2, Diagonal: 1.2
269.5
755.9
1086.6
1259.0
1240.8
1012.6
739.4
423.1
115.6
FIXTURE PERFORMANCE DATA
LED PACKAGE
DIFFUSE ACRYLIC SHIELDING (D)
DELIVERED LUMENS
PERFORATED SHIELDING (P)
WATTAGE
EFFICACY (LM/W)
DELIVERED LUMENS
WATTAGE
EFFICACY (LM/W)
21
21
21
31
31
31
44
44
44
50
50
50
100.7
96.7
106.0
95.4
91.6
100.5
91.0
87.6
95.6
98.9
102.5
106.2
1746
1676
1839
2498
2399
2631
3341
3209
3518
3845
4005
4172
21
21
21
31
31
31
44
44
44
50
50
50
85.6
82.2
90.1
81.1
77.9
85.4
77.3
74.3
81.4
78.3
81.6
85.0
31
31
31
42
42
42
59
59
59
71
70
71
86
86
86
99
99
99
102.9
101.8
107.6
97.6
97.2
102.7
93.7
93.2
98.5
100.6
98.8
105.0
97.6
96.2
98.4
107.1
105.6
109.4
2696
2640
2814
3480
3407
3632
4731
4631
4937
6097
5969
6363
7258
7154
7317
9096
8964
9289
31
31
31
42
42
42
59
59
59
70
70
70
86
86
86
99
99
99
89.0
87.1
92.9
84.5
82.7
88.2
81.0
79.3
84.5
87.1
85.3
90.9
84.4
83.2
85.1
92.6
91.3
94.6
2x2
L20/830
L20/835
L20/840
L30/830
L30/835
L30/840
L40/830
L40/835
L40/840
L50/830
L50/835
L50/840
2054
1972
2163
2939
2822
3095
3931
3775
4139
4858
5033
5214
L30/830
L30/835
L30/840
L40/830
L40/835
L40/840
L55/830
L55/835
L55/840
L70/830
L70/835
L70/840
L85/830
L85/835
L85/840
L100/830
L100/835
L100/840
3118
3053
3254
4024
3940
4200
5471
5356
5710
7051
6903
7359
8394
8273
8462
10519
10367
10742
2x4
LED Product Partner
DLC qualified products listed at www.designlights.org.
The U.S. Department of Energy’s Lighting Facts ®
Program has verified product performance based on
industry-standardized testing. For details, see
H.E. Williams AT2 series at www.lightingfacts.com.
Recessed
Page 2 of 3
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■■
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Photometrics tested in accordance with IESNA LM-79. Results shown are based on 25°C ambient temperature.
Wattage shown is average for 120V through 277V input.
Results based on relative CCT output.
H.E . W illiams, In c.
C ar t hage, Mis s our i
Information contained herein is subject to change without notice.
w w w.he w.c om
417- 3 5 8 - 4 0 6 5
HEW70516JL REV.09/22/16
AT2
ARCHITECTURAL LED TROFFER – CURVED DEEP CENTER
2x2 | 2x4 LED
FIXTURE DETAIL
BACK VIEW
NEMA TYPE “F” INSTALLATION
Access Plate
with (2) 7/8” KOs
4-3/8”
1” Min.
3-3/8” Max.
25-5/16”
Note: Maximum recommended ceiling opening is 24-3/8” x 24-38” for 2’x2’
and 24-3/8”x 48-3/8” for 2’x4’. For continuous row mounting, add 49-5/16” for
each additional fixture to obtain ceiling opening. 1-5/16” between end plates.
24” (2’ x 2’) or 48” (2’ x 4’)
OCCUPANCY SENSOR DETAIL
DIFFUSE CENTER DECORATIVE INSERT DETAILS
Triple Wave
Brushed Metal
Elliptical Perf
Circles
Stripes
Tri-Pyramid
H.E. Williams, Inc.
Carthage, Missouri
w w w.hew.com
417-358-4065
Recessed
Page 3 of 3