Lightolier Calculite 7790QD Manual de usuario

8 1/4"

A19

8 7/8"

A21

8 1/2" Overlap7 3/4" Flush

7 7/16" Dia.

1 1/ 8" min. 1 7/8 " max.

(Ceiling Runner)

1" max.

Ceiling Thickness



4-1/4"

13"

111 1/2"1 1/2"

13"

Flush Trim White Trim Ring

Top View

Calculite®Incandescent Lensed Downlight 7790QD

Page 1 of 2 7 3/8” Aperture A19 / A21 / MB19 Fresnel Lenslite

Job Information Type:

Job Name:

Cat. No.:

Lamp(s):

Notes:

Lightolier a Genlyte Thomas Company www.lightolier.com

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.

Features

1. Socket Cup: Die-cast aluminum cup effectively dissipates heat and assures

lamps maintain proper optical alignment to reflector. Snaps onto reflector

neck for easy tool-less installation. Contains medium base porcelain socket,

nickel plated screw shell wired with No 18 SF1 leads to J-Box.

2. Mounting Brackets: Adjusts vertically from inside of fixture. Durable

16 ga. steel construction. Use with standard 3/4" or 1/2" lathing channels (by

others), 1/2" EMT pipe (by others), or Lightolier accessory mounting bars.

3. Retaining Springs: Torsiontite springs secure bezel reflector housing.

4. Reflector: Specular Alzak®aluminum, 16 ga., reflector housing can be

detached from inside of fixture for access to splices after installation.

5. Junction Box: 14 ga. steel, 4" x 3" x 2" box allows inspection from below.

6. Thermal Protector: Meets NEC and UL requirements. Insulation must be

kept 3" away from fixture sides and wiring compartments and must not be

placed above fixture in a manner which will entrap heat.

7. Trim Frame: Die-cast aluminum suitable for dry or plaster ceilings. Flanges

for dry ceilings, reversible flangeless trim for use in plaster ceilings. Matte

white baked enamel finish.

8. Bezel: Die-cast aluminum bezel forms deep attractive conical aperture.

Matte white baked enamel finish. Includes black polyurethane foam gasket

to provide effective light and dust shield.

9. Lens: 6" diameter gray color louver risers. Regressed 1 1/2" from ceiling line

by bezel.

Options & Accessories

18" Mounting Bars 1950 (set of 2)

27" Mounting Bars 1951 (set of 2)

T-Bar Anchor Clips 1956 (set of 4, for 1950 & 1951 bars)

Wood Joist Mtg. Bars 7994 (set of 2)

Step Down Transformer 7997 (see 7997 specification sheet)

Chicago Air Plenum Consult Factory

Ceiling Cutout: 7 3/4” Dia.

Catalog Number Lamp

7790QD A19 100W max.

MB19 100W max.

A21 150W max.

Electrical

UL Listed for maximum of 8 No. 12, 75°C through branch circuit supply conduc-

tors, or 60°C supply conductors for end of run.

Labels

UL Listed for wet locations, I.B.E.W.

Alzak®is a registered trademark of ALCOA.

Conversion Factors: 150W A21, F.C. X 1.4

Use quick calculator c art to determine spacing of luminaires for desired level of illumination.



80% Ceiling; 50% Walls; 20% Floor

Room Surface Reflectances:

100 Watt A-19

1750 Lumens Per Lamp

RCR = 10 (Rm. Width - Mtg. Ht. above work plane)

RCR = 5 (Rm. Width - 2Mtg. Ht. above work plane)

RCR = 1 (Rm. Width - 10 x Mtg. Ht. above work plane)

CENTER TO CENTER DISTANCE OF FIXTURES IN FEET

AREA PER FIXTURE IN SQUARE FEET

INITIAL FOOTCANDLES

10 11 12 13 149876543

25 50 75 100 125 150 175 200

COEFFICIENTS OF UTILIZATION

% EFFECTIVE CEILING CAVITY REFLECTANCE

80 70 50 30 10 0

ROOM CAVITY RATIO

20% FLOOR CAVITY REFLECTANCE

50 30 10 50 30 10 50 30 10 50 30 10 50 30 10 0

.59 .57 .56 .58 .56 .55 .55 .54 .53 .53 .52 .52 .51 .51 .50 .49

.54 .52 .50 .53 .51 .49 .51 .49 .48 .50 .48 .47 .48 .47 .46 .45

.50 .47 .44 .49 .46 .44 .47 .45 .43 .46 .44 .42 .45 .43 .42 .41

.45 .42 .40 .45 .42 .39 .44 .41 .39 .43 .40 .38 .41 .40 .38 .37

.42 .38 .35 .41 .38 .35 .40 .37 .35 .39 .37 .35 .38 .36 .34 .33

.38 .35 .32 .38 .34 .32 .37 .34 .32 .36 .34 .31 .036 .33 .31 30

.35 .32 .29 .35 .31 .29 .34 .31 .29 .33 .31 .29 .33 .30 .28 .28

.32 .28 .26 .32 .28 .26 .31 .28 .26 .31 .28 .26 .30 .27 .25 .25

.29 .26 .23 .29 .25 .23 .28 .25 .23 .28 .25 .23 .28 .25 .22 .22

.27 .23 .21 .27 .23 .21 .26 .23 .21 .26 .23 .21 .25 .22 .20 .19

% WALL REFLECTANCE

Conversion Factor: For 150W A21 units, multiply C.U.s by 0.9

100

200

300

400

500

E.T.L, Inc. report No. 390909

Date: 06-24-64

Efficiency: 52.0%

Spacing Ratio = 1.3

ZONE LUMENS LAMP

0-30 461 26.5

0-40 705 40.5

0-60 909 52.0

0-90 936 53.5

DEG CP ZONAL FLUX

0 484

5 492 47

15 551 156

25 558 258

35 389 244

45 181 140

55 71.0 64

65 25.4 25

75 2.0 2

85 0 0

Candlepower Summary

Calculite®Incandescent Lensed Downlight 7790QD

Page 2 of 2 7 3/8” Aperture A19 / A21 / MB19 Fresnel Lenslite

Lightolier a Genlyte Thomas Company www.lightolier.com

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.

Job Information Type:

100W A19

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