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coefficients of utilization — zonal cavity method
RF 20 20 20
RC 80 50 30
RW 70 50 30 50 30 10 50 30 10
1 69 66 64 63 61 60 60 59 58
2 64 60 56 57 54 52 55 52 51
3 59 54 50 51 48 45 49 47 44
4 55 48 44 46 42 40 45 42 39
5 51 44 39 42 38 35 41 37 35
6 47 40 35 38 34 31 37 34 31
7 44 36 31 35 31 28 34 30 28
8 41 33 29 32 28 25 31 28 25
9 38 31 26 30 26 23 29 25 23
10 36 28 24 28 24 21 27 23 21
visual comfort probability (VCP) average 100 fc; reflectances 80/50/20
room size ceiling height ceiling height
WL8.5 10.0 13.0 16.0 8.5 10.0 13.0 16.0
20 20 79 73 66 70 79 72 67 72
20 30 82 75 70 66 81 75 69 65
20 40 84 78 73 69 83 77 73 68
20 60 85 80 76 72 84 79 75 71
30 20 83 77 69 70 83 77 69 71
30 30 85 79 72 66 84 79 72 66
30 40 86 81 75 69 86 81 74 68
30 60 87 83 77 72 87 82 77 71
30 80 87 83 79 74 87 84 78 73
40 20 84 80 73 71 84 80 74 72
40 30 86 81 76 68 86 81 75 68
40 40 87 83 78 71 87 83 77 70
40 60 88 84 80 73 88 84 79 72
40 80 88 84 81 75 88 85 81 74
40 100 88 84 81 77 88 85 82 76
60 30 87 82 77 71 86 82 77 71
60 40 88 84 79 73 87 84 79 73
60 60 89 85 81 75 88 85 81 74
60 80 89 85 82 77 89 86 82 76
60 100 89 86 83 79 89 86 83 78
100 40 88 84 81 75 87 84 80 74
100 60 89 85 82 77 88 85 81 76
100 80 89 86 83 79 89 86 83 78
100 100 89 86 84 80 89 86 84 80
Deepcel Plus DPA2G16LS26U
Page 2 of 2 2' x 2' Recessed Fluorescent, 3", 16 Cell Parabolic Louver
Static or Air/Return, 2 Lamp 6"U T8
Lightolier a Genlyte company www.lightolier.com
Technical Information: (978) 657-7600 • Fax (978) 658-0595
631 Airport Road, Fall River, MA 02720 • (508) 679-8131 • Fax (508) 674-4710
We reserve the right to change details of design, materials and finish.
© 2007 a Genlyte company
Section 2/Folio G51-36 Rev. A
Job Information Type:
Options/Accessories
Plaster Frame: Catalog Number: PF22.
Continuous Row Installation: For F type fixtures, half width flanges are required between
fixtures. Order Catalog Number: 2FC TRIM CSP (each joint).
Radio Interference Filter:
To order one RIF per fixture; SUFFIX: R. To order one RIF per ballast;
SUFFIX: B.
Electrical Wiring Options: Consult factory.
Air Closure Strip:
SUFFIX: ACS2 (factory installed).
Drywall Kit: Order Catalog Number: FK92X2. (Request Folio OA30-10 Rev. A).
Chicago Plenum: SUFFIX: CP.
Specifications
Performance: In an installation of 2 lamp 31W luminaires in a room cavity ratio of 1,
reflectance 80% ceiling, 50% wall, 20% floor, the C.U. shall not be less than .66. To prevent
glare the VCP shall be not less than 74 either lengthwise or crosswise (at 100fc level) and
the average brightness at 65° shall not exceed 914 candelas per square meter. To control
veiling reflections, luminaire output in the 30°-90° zone shall not be less than 62.8%.
Air Handling (DPA only) side air pasaages for air supply or air return. Supply air is discharged
vertically. Optional side closure strips. Air return is also provided through the lamp compartment
through fixture body ends.
Materials: Chassis parts are die-formed code gauge cold rolled steel. Housing
is ribbed for
rigidity with side rails hemmed over and housing ends turned-in for safe handling.
Louver is
pre-anodized aluminum (Coilzak
®
or equal.
Specifications (continued)
Finish: Chassis exterior–black baked polyester enamel. Cavity–white baked polyester
enamel minimum 86% reflectance. Phosphate undercoating. Louver–low iridescence semi-
specular anodized vertical grain aliminum reflector sheet is standard.
Electrical: Thermally protected class “P” ballast C.B.M. approved, non PCB. If K.O. is with-
in 3" of ballast, use wire suitable for at least 90°.
Labels: I.B.E.W. UL and ULc Listed.
Photometry Model No. DPA2G16LS26U120SO
LER = FP - 49.4 IW - 57.5 BF - 0.87
Comparative yearly lighting energy cost per 1000 lumens = $4.86
THISREPORTISBASEDONPUBLISHEDINDUSTRYPROCEDURES•FIELDPERFORMANCEMAYVARYFROMLABORATORYPERFORMANCE.
Deepcel Plus
Parabolic:
Pre-anodized
aluminum
louver
Body Style:
A=Air Supply
S=Static
2
Fixture
Width
2
Lamp
Quantity
6U
Lamp Type/
Fixture Length:
6"U Lamp
T8 or T12
(Nominal 24")
Note: For Linear
T5 Lamp option,
consult factory
Options:
Add appropriate
suffix to catalog no.,
ie: (CP)
Ballast Type:
<20THD <10THD
1-2 Lamp Elec. T8 SO * H
I *
LOL T8 Dimming PS –
*Instant Start Standard
Other dimming options. Consult factory.
NOTE:
For T8 UNV, you must use H
I
Ballast Code.
Ordering Information
Explanation of Catalog Number. Example: DPA2G16LS26U120SOCP
Ceiling Type:
G= Grid
(lay-in T bar)
F= Flanged (over
lap) Z spline and
plaster frame
T= Slot grid or
two-directional
concealed T
(see options)
16
Number of
Cells:
16=4 rows
of 4
Louver Finish:
L = Low
iridescence
Semi-specular
(standard)
P =Low
iridescence
Specular
W =White Baked
Enamel
S
Single "V"
Reflector
room cavity ratio
luminaries lengthwise
luminaries crosswise
Voltage:
120, 277 or
UNV=120-277
G00030
DPA2G16LS26U120SO
2 T* U6, EACHRATED 2750 LUMENS.
2X2 TROFFERWITH 4X416CELL LISEMISPECULAR LOUVER.
DP
Standard Deepcel
DY
For NYC Code – I.B.E.W. Manufactured
ND
For NYC Code – Local 3 Manufactured
5½" Deep Body