Simplex 4903 - User Manual

OaSimplex
4903 Audible/Visible and
4904 Visible Units
Installation Instructions
iktaiiation Procedure
Assemble Lens (if Required) - FLASHER UNITS ONLY
1. Attach the reflector (A) to the Flasher Printed Circuit (PC) Board (B) by lining
up the reflector’s cut-out (C) with the flash tube (D) and then pushing the
reflector behind the tube. DO NOT TOUCH FLASH TUBE WITH YOUR
FINGERS. See Figure 1.
NOTE: Make sure that the reflector cut-out’s large slot lines up with the flash
tube’s two-wired lead end and the reflector’s flanges face towards the
flasher board’s component surface.
2. Insert the Flasher PC Board with reflector inside the lens (E) by placing the
Flasher PC Board behind the lens’ two bottom tabs (F) and then snapping the
Flasher Board onto the top tab (G). See Figure 1.
NOTE: Make sure that the reflector is wrinkle-free and behind the flash tube.
PROCEED TO STEP 3 ON PAGE 4.
AMOUNT OF LIGHT (IN PERCENT)
FOR LENS VIEWING ANGLES’
A. Flasher Units 4904-9104 (Ceiling-Mount),
B. All Other Flasher
4904-9105 (Wall-Mount), and 4904-9106
Units Listed in Flasher
(Ceiling or Wall-Mount) at 24VDC Rating Chart on page 2.
b2% 4s%
‘Alternate Lenses for 4903 Audible/Visible or 4904 Visible Flasher Units
t 4905-9901
Ceiling Lens, Clear with “FIR&
t 49059902
Plain Clear Lens
T Not for use with 4904-9104,
-9105. and -9106 Flasher Units
D
LENS ASSEMBLY - FLASHER UNITS ONLY
Q ,992 smplex Tim* Rec‘ndB, co, Gardner. MA 0144-0001 U.S.A. PER-21-302 (574-657)
All specil,catm”s an.3 other i”‘cmla,w” Show” were c”r,en, as 0, pubhcahon. and am subject 10 change Wltho”t nOw*
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Simplex 4903 Specifications

General

Brand	Simplex
Model	4903
Category	Fire Alarms
Language	English

Summary

Flasher Unit Assembly and Specifications

Flasher Unit Lens Assembly Procedure

Steps for assembling the lens and reflector for flasher units.

Flasher Unit Light Distribution Patterns

Diagram illustrating light output percentages at various viewing angles for flasher units.

Flasher Rating Chart Details

Table detailing effective intensity and flash rates for different flasher unit models.

Incandescent Unit Assembly and Specifications

Incandescent Unit Lens Assembly Procedure

Steps for assembling the lens and reflector for incandescent units.

Incandescent Unit Light Distribution Patterns

Diagram showing light output percentages for incandescent unit viewing angles.

Incandescent Rating Chart Details

Table detailing effective intensity for incandescent unit models.

Unit Base Attachment and Wiring Diagrams

Attaching Lens Assembly to Base Unit

Connecting the assembled lens unit to the audible/visible or visible only base.

Flasher Unit Wiring Diagrams (21-28 VDC)

Wiring diagrams for flasher units with notification appliances and speakers at 21-28VDC.

Flasher Unit Wiring Diagrams (120 V)

Wiring diagrams for 120V flasher units with speakers and notification appliances.

Incandescent Unit Wiring Diagrams (21-28 VDC)

Wiring diagrams for incandescent units with notification appliances and speakers at 21-28VDC.

Incandescent Unit Wiring Diagrams (120 V)

Wiring diagrams for 120V incandescent units with speakers and notification appliances.

Final Mounting Procedures

Mounting 4903 Audible;Visible Units

General procedure for mounting 4903 A/V units and specific notification appliances.

Surface;Retrofit and 4904 Visible Mounting

Procedures for surface/retrofit mounting and mounting 4904 Visible Only units.