Lightolier MPA2G78LS432 User Manual

MOUNTING METHODS DIMENSIONS

G

exposed T-grid ceiling.

T

exposed slot T-grid ceiling.

F

concealed Z-spline ceiling.

F

plaster ceiling/flanged.

T

direct concealed two directional
T-grid ceiling (see options for

splay trim).

drywall kit. (See options)

1/4" max.

15/16"
or 1"

24"

24"

1/4" max.

3/8"

24"

Type “G”
Fixture

15/16"

Ceiling Opening
24-5/16" x 48-5/16"

Support
(by others)

Drywall Kit
(See Options)

Drywall
(by others)

13/16"

Plaster

Opening

24-1/8"

24-11/16"

1-1/8" min.
3-3/4" max.

9/16"

24"

1-1/2" max.

1-7/8" max.

1-7/8" max.

1-1/8" min.
3-3/4" max.

6" (152mm)

Air supply slots
(MPA only)

39-1/4" (997mm)

47-31/32" (1218mm)

2" x 2-1/2" access plate
with two K.O.s
(7/8" dia.)

24" (610mm)

5" (127mm)

PARABAFFLE plus MPA2G78LS432

Page 1 of 2 2'x4' RECESSED FLUORESCENT, 1 1/2" DEEP, 78 CELL PARABOLIC LOUVER

STATIC OR AIR SUPPLY/RETURN, 4 LAMP, T8 OR T12

Job Information Type:

Job Name:

Cat. No.:

Lamp(s):

Volts/Ballast:

Lightolier a Genlyte Thomas Company www.lightolier.com

Technical Information: [phone] • Fax [phone]
631 Airport Road, Fall River, MA 02720 • [phone] • Fax [phone]
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division)
A0902 SECTION 2/Folio G20-20

FEATURES

• 5" deep body.

• 3 1/2" x 3 1/2" cell size.

• 62.1% efficient.

• Clean contoured interior.

• Eyeleted heat removal vents in fixture ends.

• One-piece housing has ribbed construction for added strength.

• Hemmed over side rails for safe handling.

• Fixture ends turned-in for safe handling.

• Built-in earthquake clips (patent no. 5,072,344).

• Pre-anodized aluminum parabolic louver.

• Vertical grain louver eliminates reflected lamp images on cross baffle.

• Spring-loaded rooster head latches.

• 18 gauge steel hinges.

• Louver frame with integral positive light stop.

• Louver has protective film dust guard.

• Construction to meet Chicago Plenum is available.

PHOTOMETRY MODEL NO. MPA2G78LS432

coefficients of utilization — zonal cavity method

RF 20 20 20
RC 80 50 30

RW 70 50 30 50 30 10 50 30 10

1696765 636260 615958
2646057 575452 555351
3595450 514845 504744
4554844 464239 454139
5514439 423835 413734
6474035 383431 373330
7443631 353027 343027
8413328 322825 312724
9383026 292522 292522

10 36 28 23 27 23 20 27 23 20

visual comfort probability (VCP) average 100 fc; reflectances 80/50/20

room size ceiling height ceiling height
W L 8.5 10.0 13.0 16.0 8.5 10.0 13.0 16.0
20 20 84 78 72 77 82 75 67 73

20 30 86 81 76 73 82 79 72 67
20 40 86 81 80 76 82 79 76 71
20 60 86 82 80 79 82 79 76 75

30 20 85 82 73 75 82 80 70 73
30 30 86 85 77 71 82 83 74 67
30 40 86 85 81 75 82 83 78 71
30 60 86 85 81 78 83 83 78 75
30 80 86 85 81 78 83 83 78 75

40 20 85 82 75 76 82 80 72 74
40 30 86 85 80 72 82 83 77 69
40 40 86 85 82 76 83 83 80 73
40 60 87 85 82 79 83 83 80 76
40 80 87 85 82 79 83 83 80 76
40 100 87 85 82 79 83 83 80 76

60 30 86 85 80 75 83 83 77 73
60 40 86 85 82 78 83 83 80 76
60 60 87 85 82 81 83 83 80 77
60 80 87 85 82 80 83 83 80 78
60 100 87 85 82 80 83 83 80 77

100 40 87 85 82 78 83 83 80 76
100 60 87 85 82 80 83 83 80 77
100 80 87 85 82 80 83 83 80 77
100 100 87 85 82 80 83 83 80 77

room cavity ratio

luminaries lengthwise

luminaries crosswise

ORDERING INFORMATION

Explanation of Catalog Number. Example: MPA2G78LS432120O4RF

OPTIONS & ACCESSORIES

PLASTER FRAME: Catalog Number: PF24.
CONTINUOUS ROW INSTALLATION: For F type fixtures, half-width flanges
are required between fixtures. Order Catalog Number: S2FCTRIM (each joint).
SPLAY TRIM: For T ceiling type only. SUFFIX: CTZ24 S2 SPLAY TRIM.
RADIO INTERFERENCE FILTER: 120 or 277 volt, 50 or 60 Hz. One per fixture
standard. SUFFIX: RF.
ELECTRICAL/WIRING OPTIONS: Consult factory.
AIR CLOSURE STRIP: SUFFIX: ACS4 (factory installed).
DRYWALL KIT: Order Catalog Number: FK92X4. (Request Folio OA30-10)
CHICAGO PLENUM: SUFFIX: CP.

SPECIFICATIONS

PERFORMANCE: In an installation of 4 lamp 32W luminaires in a room cavity

ratio of 1, with reflectance of 80% ceiling, 50% wall, 20% floor, the C.U. shall
not be less than .67. To prevent glare the VCP shall be not less than 80 either
lengthwise or crosswise (at 100fc level) and the average brightness at 65° shall
not exceed 1098 candelas per square meter. To control veiling reflections,
luminaire output in the 30°-90° zone shall not be less than 64.8%.
AIR HANDLING (MPA only) side air passages 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.

SPECIFICATIONS (continued)

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).
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 aluminum reflec­tor sheet is standard.
ELECTRICAL: Thermally protected class “P” ballast C.B.M. approved, non PCB.
If K.O. is within 3" of ballast, use wire suitable for at least 90°.

LABELS: I.B.E.W. UL and ULc Listed.

MP

PARABAFFLE

1-1/2" PARABOLIC:

Pre-anodized

aluminum louver

BODY STYLE:
A=Air Supply
S=Static

2

FIXTURE

WIDTH

CEILING TYPE:

G= Grid

(lay-in T bar)

F=Flanged

(overlap)

Z spline and
plaster frame

T=Slot grid or

two-directional
concealed

T

(see options)

78

NUMBER OF

CELLS

LOUVER

FINISH*:

L= Low

Iridescence
Semi-specular

(standard)

P= Low

Iridescence

Specular

W=White Baked

Enamel

S

SINGLE

REFLECTOR

4

LAMP

QUANTITY

LAMP TYPE/

FIXTURE
LENGTH:

32=T8
34=T12

(Nominal 48")

VOLTAGE:

120 or 277

OPTIONS:

Add appropriate
suffix to catalog

no, ie: (RF)

BALLAST TYPE:

2-2 Lamp Mag. T12 LE

<20THD <10THD

2-2 Lamp Elec. T8 SO* HI*
1-4 Lamp Elec. T8 O4* H4*
LOL T8 Dimming PS –

*Instant Start Standard

Other dimming options. Consult factory.

Luminaire Efficacy Rating
LER-54.8 Watts-116.2 BF-0.86

Lightolier a Genlyte Thomas Company www.lightolier.com

Technical Information: [phone] • Fax [phone]
631 Airport Road, Fall River, MA 02720 • [phone] • Fax [phone]
We reserve the right to change details of design, materials and finish.
© 2002 Genlyte Thomas Group LLC (Lightolier Division)
A0902 SECTION 2/Folio G20-20

Job Information Type:

PARABAFFLE plus MPA2G78LS432

Page 2 of 2 2'x4' RECESSED FLUORESCENT, 1 1/2" DEEP, 78 CELL PARABOLIC LOUVER

STATIC OR AIR SUPPLY/RETURN, 4 LAMP, T8 OR T12