Lightolier MBS2GPW224 User Manual

Mini-Beam 2' x 2' Recessed Fluorescent MBS2GPW224

Page 1 of 2 Direct/Indirect, Static, 2 Lamp, Linear T5, 24 Watt

Features

•

Direct/indirect lamp shield appearance with soft contoured
interior.

• Four inch wide perforated mesh lamp shield with white acrylic
overlay.

• 62.3% efficient.

• Only 5-1/2" deep.

• Same fixture fits both G and T ceiling types.

• Fits flush to face of slot grid (T) ceiling types.

• Lamp shield hinges from either side.

• Hinged external ballast housing compartment.

• Can be continuous row mounted.

• Wiring access plate standard.

• 4 hold-down clips standard.

• Housing is 20 gauge steel, meets NYC Code requirements.

• Optional DALI ballast accepts digital dimming commands from
computers, scene controllers and automatic control devices.

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.
Copyright 2004 Lightolier Section 5/Folio M20-10

3/04

Hinged external ballast housing
compartment

Exposed t-grid ceiling

Exposed slot t-grid ceiling

Acoustical
material
by others

Exposed T-bar
by others

1-1/2"
max.

Acoustical
material
by others

15/16"

24"

1-7/8"
max.

Exposed T-bar
by others

9/16"

24"

Hold-down clips

Mounting Methods Dimensions

Hinged external
ballast housing
compartment

Ballast

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

3-1/2"

(89mm)

24" (610mm)

Features

Hinged external ballast housing compartment

24" (610mm)

5-1/2"

(139mm)

4" (102mm)

Mini-Beam 2' x 2' Recessed Fluorescent MBS2GPW224

Page 2 of 2 Direct/Indirect, Static, 2 Lamp, Linear T5, 24 Watt

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.
Copyright 2004 Lightolier Section5/Folio M20-10

Job Information Type:

Ordering Information

Explanation of Catalog Number. Example: MBS2GPW224120PGGLR

Options/Accessories

Fusing: Internal fast-blow fusing. Suffix: GLR.

Internal slow-blow fusing. Suffix: GMF.

Electrical/Wiring Options: Consult factory.

Specifications

Performance: In an installation of 2 lamp 24W luminaires in a room cavity of 1,

with reflectance of 80% ceiling, 50% walls, 20% floor, the C.U. shall not be less
than .65. To reduce glare the average brightness at 65° shall not exceed 2725
candelas per square meter. To control veiling reflections, luminaire output in the
30°-90° zone shall not be less than 75.8%.

Materials: Housing is die-formed 20 gauge steel.
Finish: Chassis exterior–baked white acrylic enamel. Reflector–baked flat

white acrylic enamel, minimum 86% reflectance. Phosphate undercoating.

Lamp Shield–baked flat white acrylic enamel.
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.

Photometry

Model No. MBS2GPW224120PG

MB

Mini-Beam

Direct/Indirect

Recessed

with Perforated

Mesh Shield

2

Fixture

Width

G

Ceiling Type:

Fits both

Standard Grid

and

Slot Grid

P

Perforated

Lamp Shield

W

White

Reflector

Voltage:

120 or 277

Options:

Add appropriate
suffix to catalog

no, ie: (GLR)

Ballast:

PI = Linear T5

Instant Start
Less than 10 THD

PG = Programmed

Start
Less than 10 THD

DA = DALI digital

addressable
dimming

coefficients of utilization — zonal cavity method (effective floor cavity reflectance 0.20)

RF 20 20 20
RC 80 50 30

RW 70 50 30 50 30 10 50 30 10

1686562 615957 585755
2625652 535047 514846
3565044 474339 454239
4514438 413733 403633
5473833 363228 353128
6433429 322824 312724
7393125 292421 282421
8362722 262118 252118
9332519 231915 231815

10 31 22 17 21 17 14 21 16 13

visual comfort probability

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 64 71 82 91 54 62 76 88

20 30 60 64 72 81 47 52 60 73
20 40 59 62 67 73 45 48 53 61
20 60 59 61 64 69 43 46 48 54

30 20 62 69 79 88 56 63 75 86
30 30 58 62 68 77 49 53 59 71
30 40 57 59 63 69 46 48 52 59
30 60 57 58 60 65 44 46 47 51
30 80 57 59 59 63 43 45 45 49

40 20 63 69 77 86 59 65 75 85
40 30 59 61 67 75 52 55 60 71
40 40 57 59 61 67 48 50 52 58
40 60 57 57 58 62 45 47 47 51
40 80 57 58 57 61 45 46 44 48
40 100 58 58 57 60 45 45 44 46

60 30 59 62 66 73 54 57 61 70
60 40 58 59 60 65 50 52 53 59
60 60 57 57 57 60 47 48 47 51
60 80 57 57 56 58 46 46 45 47
60 100 58 58 56 58 46 46 43 45

100 40 60 61 61 66 56 56 56 61
100 60 59 59 57 60 52 52 50 53
100 80 59 58 56 58 50 50 47 49
100 100 60 59 56 57 49 49 46 47

room cavity ratio

luminaries lengthwise

luminaries crosswise

LER = FL - 41.9 IW - 52.0 BF - 1.00
Comparative yearly lighting energy cost per 1000 lumens = $5.72

S

Body Style:

S = Static

2

Lamp

Quantity

24

Lamp Quantity:

(By others)

24 = HO/T5 24 Watt

For Local 3 Manufacturing, substitute for . Example: MNS2GPW224120PGGLR .

MN

MN

For Local 3

Manufacturing

MB