Lightolier Calculite 7794QD User manual

6 1/2"
7 7/16" Dia.
7 3/4" Flush
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5
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7
8
9
3"
1-1/8" min. -
1-7/8" max.
(Ceiling Runner)
Overlap 8 1/2"
4 1/4"
14 1/2"
11 1/2"
13"
Top View
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 • [phone] • Fax [phone]
We reserve the right to change details of design, materials and finish.
© 2003 Genlyte Thomas Group LLC (Lightolier Division) • B0303
Features
1. Socket Cup: Die-formed steel effectively dissipates heat and assures lamps
maintain proper optical alignment to reflector. Contains medium base
porcelain socket with nickel plated screw shell wired with No. 18 SF1 leads
to J-Box.
2. Mounting Brackets: Adjust vertically from inside of fixture. Durable 16 ga.
steel construction. Use with standard 3/4" or 1 1/2" lathing channels
(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 1/2" 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 colouvered risers. Recessed 1 1/2" from ceiling.
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)
Sloped Ceiling Adapter 7926 (see SCA specification sheet)
Step Down Transformer 7997 277v Step Down Transformer
(277v primary 1.1 amp/120v secondary,
300w capacity)
Ceiling Cutout: 7 7/8" Dia.
Ordering Information
Catalog Number Lamp
7794QD A19 100W
MB19 100W
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.
Calculite®Incandescent Lensed Downlight 7794QD
Page 1 of 2 7 3/8” Aperture Horizontal Lamp Fresnel Lenslite
Alzak®is a registered trademark of ALCOA.
Flush Trim Overlap Trim

Calculite®
Incandescent
Lensed Downlight
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
.64 .62 .61 .62 .61 .60 .60 .59 .58 .58 .57 .56 .56 .55 .54 .53
.60 .57 .55 .59 .56 .54 .57 .355 .53 .55 .53 .52 .53 .52 .51 .50
.56 .53 .51 .55 .52 .50 .54 .51 .50 .52 .50 .49 .51 .49 .48 .47
.52 .49 .47 .51 .49 .46 .50 .48 .46 .49 .47 .45 .48 .46 .45 .44
.49 .46 .43 .49 .45 .43 .48 .45 .43 .47 .44 .42 .46 .44 .42 .41
.46 .43 .40 .46 .43 .40 .45 .42 .40 .45 .42 .40 .43 .41 .39 .39
.43 .40 .38 .43 .40 .38 .42 .39 .37 .42 .39 .37 .41 .39 .37 .36
.41 .37 .35 .40 .37 .35 .40 .37 .35 .39 .36 .34 .39 .36 .34 .34
.38 .35 .32 .38 .35 .32 .37 .34 .32 .37 .34 .32 .36 .34 .32 .31
.34 .30 .28 .34 .30 .28 .33 .30 .28 .33 .30 .28 .32 .30 .28 .27
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% Wall reflectance
Conversion Factor:
Conversion Factors:
Use quick calculator chart 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 ISTANCE OF FIXTURES IN FEET
AREA PER FIXTURE IN SQUARE FEET
INITIAL FOOTCAN LES
10 11 12 13 14 159876543
25 50 75 100 125 150 175 200 225
40
35
30
25
20
15
10
5
150
300
90
60
30
450
600
Spacing Ratio = 1.1
ETL, Inc. Report No. 387916-A
ate: 08-12-63
Efficiency: 55.5%
Candlepower Summary
DEG CP ZONAL FLUX
0 697
5 686 65
15 654 185
25 634 294
35 393 247
45 140 108
55 53.4 48
65 26.3 26
75 8.8 9
85 2.6 3
90 0
ZONE LUMENS %
0-30 544 32.0
0-40 791 44.5
0-60 947 55.5
0-90 985 58.0
Calculite®Incandescent Lensed Downlight 7794QD
Page 2 of 2 7 3/8” Aperture Horizontal Lamp Fresnel Lenslite
Lightolier a Genlyte Thomas Company www.lightolier.com
631 Airport Road, Fall River, MA 02720 • [phone] • Fax [phone]
We reserve the right to change details of design, materials and finish.
© 2003 Genlyte Thomas Group LLC (Lightolier Division) • B0303
Job Information Type: