Lightolier C4P20D User Manual

14 1/4"

Adjustment
(mounting bars
included)

13 3/4" to 24"

(IC AirSeal

®

)

C4AIC

10"

Adjustment
(mounting bars
included)

13 3/4" to 24"

O.A.

20 1/4"

8 1/2"

9 1/2" Dia.

O.A.

14 3/8"

7 3/4"

9 1/2" Dia.

O.A.

12 3/8"

7 3/4"

(Non-IC)

C4120

12 1/2"

(Non-IC AirSeal®)

C4A120

Calculite

®

Evolution Incandescent Open Downlight C4P20D

Page 1 of 2 4 1/2” Aperture PAR20/PAR16/BR19/R20 Reflector Trim

Features

1. Reflector: 16 ga. Alzak®aluminum, 50° visual cutoff to lamp and lamp

image. Available with painted white or polished flange. Interchangeable
with other Evolution 4 1/2" line voltage trims.

2. Socket Harness: Spring tension clips snap into die-cast aluminum top at

pre-focused positions ensuring correct optical alignment. Medium base
porcelain socket with nickel plated screw shell, No. 18 SF-1 leads, and keyed
plug-in quick connector for power connection to junction box.

3. Frame-In-Kit: Compatible Frame-In Kits are listed above; see separate

specification sheet for details.
Non-IC and Non-IC AirSeal®- 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.
IC-AirSeal®- Fixture may be in direct contact with insulation.

Options and Accessories

Reflector Finishes

1

Comfort Clear Diffuse CCD
Specular Gold GD
Specular Black BK
White WH

1

Specify desired flange

W White, P Polished

Labels

UL Listed (suitable for damp locations), I.B.E.W.

Alzak

®

is a registered trademark of ALCOA.

US and Foreign Patents Pending.

Ceiling Cutout: 5 1/16" (129 mm) Dia.

Reflector Trim Frame-In Kit

C4P20D CLW Specular Clear, White Flange Non-IC Non-IC AirSeal

®

IC-AirSeal

®

Non-IC Remodeler

C4P20D CLP Specular Clear, Polished Flange C4120 C4A120 C4AIC C4120RM
C4P20D Add suffix. See options for other finishes.

50W PAR20 50W PAR20 50W PAR20 50W PAR20
75W PAR16 75W PAR16 75W PAR16 75W PAR16
75W BR19, R20 75W BR19, R20 75W BR19, R20 75W BR19, R20

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) • B0403

132

9 1/4"

1/2" to 1" Thk. Ceiling

C4P20DCLW / C4AIC

7 3/4" min.*
8 1/4" max.

7"

* 7 3/4" min. is for up to 3/4" thick ceiling

4 1/2" Dia.
5 3/4" Dia.

C4P20DCLW / C4120 or
C4P20DCLW / C4A120

1 1/4" Max. Ceiling Thk.

Spacing Ratio = 0.6

Date: July 19, 1999
Prepared for
Lightolier, Fall River, MA

Tested According To IES Procedures. Test Distance Exceeds Five

Times The Greatest Luminous Opening Of Luminaire.

Spacing Ratio = 1.0

Date: July 19, 1999
Prepared for
Lightolier, Fall River, MA

Tested According To IES Procedures. Test Distance Exceeds Five

Times The Greatest Luminous Opening Of Luminaire.

Conversion Factors
30W to 75W R20: Clear, C.U.x 1.00; Diffuse/Gold, C.U.x 0.9; Black, C.U.x 0.45

Coefficients of Utilization

% Effective Ceiling Cavity Reflectance

80 70 50 30 10 0

% Wall Reflectance

50 30 10 50 30 10 50 30 10 50 30 10 50 30 10 0
1 .95 .93 .92 .94 .92 .90 .90 .89 .88 .87 .86 .85 .84 .83 .83 .81
2 .90 .87 .85 .88 .86 .84 .86 .84 .82 .83 .82 .80 .81 .80 .79 .77
3 .85 .82 .79 .84 .81 .78 .82 .79 .77 .80 .78 .76 .78 .76 .75 .74
4 .81 .77 .74 .80 .76 .73 .78 .75 .73 .76 .74 .72 .75 .73 .71 .70
5 .76 .72 .69 .75 .71 .69 .74 .71 .68 .73 .70 .68 .71 .69 .67 .66
6 .73 .68 .65 ..72 .68 .65 .71 .67 .64 .70 .66 .64 .68 .66 .64 .63
7 .68 .64 .61 ..68 .64 .61 .67 .63 .61 .66 .63 .60 .65 .62 .60 .59
8 .65 .60 .57 .64 .60 .57 .63 .60 .57 .63 .59 .57 .62 .59 .56 .55
9 .61 .57 .54 .61 .57 .54 .60 .56 .53 .59 .56 .53 .58 .55 .53 .52

10 .58 .53 .50 .57 .53 .50 .57 .53 .50 .56 .52 .50 .56 .52 .50 .49

20% Floor Cavity Reflectance

ROOM CAVITY RATIO

Coefficients of Utilization

% Effective Ceiling Cavity Reflectance

80 70 50 30 10 0

% Wall Reflectance

50 30 10 50 30 10 50 30 10 50 30 10 50 30 10 0
1 1.11 1.09 1.08 1.09 1.07 1.06 1.05 1.04 1.03 1.01 1.01 1.00 .98 .98 .97 .95
2 1.06 1.04 1.02 1.05 1.02 1.01 1.02 1.00 .98 .99 .98 .96 .97 .96 .94 .93
3 1.03 1.00 .97 1.01 .99 .97 .99 .97 .95 .97 .95 .94 .95 .94 .93 .91
4 1.00 .96 .94 .99 .96 .93 .97 .94 .92 .95 .93 .91 .93 .92 .90 .89
5 .96 .93 .90 .95 .92 .90 .94 .91 .89 .92 .90 .88 .91 .89 .88 .87
6 .94 .90 .88 .93 .90 .88 .92 .89 .87 .91 .88 .87 .90 .88 .86 .85
7 .91 .88 .85 .91 .87 .85 .89 .87 .85 .88 .86 .84 .88 .85 .84 .83
8 .88 .85 .83 .88 .85 .82 .87 .84 .82 .86 .84 .82 .86 .83 .81 .81
9 .86 .83 .80 .86 .83 .80 .85 .82 .80 .84 .81 .80 .84 .81 .79 .79
10 .84 .81 .78 .84 .81 .78 .83 .80 .78 .82 .80 .78 .82 .79 .78 .77

20% Floor Cavity Reflectance

Room Cavity Ratio

Conversion Factors
35W, 50W PAR20 NFL: Clear, C.U.x 1.0; Diffuse/Gold, C.U.x 0.95; Black, C.U.x 0.7
60W, 75W PAR16 NFL: Clear, C.U.x 0.90; Diffuse/Gold, C.U.x 0.85; Black, C.U.x 0.6
35W, 50W BR19 SP: Clear, C.U.x 0.85; Diffuse/Gold, C.U.x 0.80; Black, C.U.x 0.6

Calculite

®

Evolution Incandescent Open Downlight C4P20D

Page 2 of 2 4 1/2” Aperture PAR20/PAR16/BR19/R20 Reflector Trim

Certified Test Report No. 0839FR

Computed By LSI Program **Test-Lite**

Recessed Open Reflector Downlight

4 1/2" Dia. Aperture, Specular Clear Finish Reflector

75W R20 GE Lamp. Lumen Rating = 650 LMS.

Certified Test Report No. 0838FR

Computed By LSI Program **Test-Lite**

Recessed Open Reflector Downlight

4 1/2" Dia. Aperture, Specular Clear Finish Reflector

50W PAR20 NFL Sylvania Lamp. Lumen Rating = 530 LMS.

Candlepower Summary
Angle Mean CP Lumens
0 479
5 479 46
10 489
15 508 142
20 500
25 447 199
30 328
35 197 131
40 110
45 25 32
50 3
55 1 1
60 0
65 0 0
70 0
75 0 0
80 0
85 0 0
90 0

Zonal Lumens And Percentages
Zone Lumens % Lamp %Luminaire
0-30 387 59.60 70.37
0-40 518 79.69 94.09
0-60 550 84.69 99.99
0-90 550 84.70 100.00
40-90 32 5.01 5.91
60-90 0 .01 .01
90-180 0 .00 .00
0-180 50 84.70 100.00

** Efficiency = 84.7% **

Candlepower Summary
Angle Mean CP Lumens
0 1423
5 1186 115
10 1036
15 878 238
20 565
25 259 135
30 84
35 26 23
40 12
45 3 4
50 0
55 0 0
60 0
65 0 0
70 0
75 0 0
80 0
85 0 0
90 0

Zonal Lumens And Percentages
Zone Lumens % Lamp %Luminaire
0-30 448 92.09 94.76
0-40 511 96.49 99.28
0-60 514 97.17 99.98
0-90 515 97.19 100.00
40-90 3 .70 .72
60-90 0 .02 .02
90-180 0 .00 .00
0-180 515 97.19 100.00

** Efficiency = 97.2% **

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) • B0403

Job Information Type: