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1. CHESHIRE, CT 203-699-3300 FAX 203-699-3365 (CUST. SERV.) 203-699-3078 (TECH SERV.)
Installation Instructions for Catalog Series 439D
Fire Alarm Bell
Description and Operation
The Edwards 439D series models are heavy-duty, dc pow-
ered, vibrating fire bells. They are designed for public
mode signaling in accordance with the latest edition of
NFPA 72. These vibrating bells produce a long, continu-
ous ringing sound. See table below for electrical specifi-
cations.
P/N P-047550-0590 ISSUE 6 © 2001
Catalog Size
Number (in.) Voltage Amps
439D-6AW-R 6 20/24V DC 0.085
439DG-6AW
439D-8AW-R 8
439D-10AW-R 10
439DG-10AW
Installation
CAUTION
Do not apply power to bell until installation has been
completed.
6. Align the tabs on the back of the gong with the grooves
in the bell body and secure with the screw and
lockwasher removed in step 1.
Surface Mounting (Figure 4)
1. Remove screw and lockwasher from front of gong and
remove gong. Retain hardware and gong.
2. Cut bell wire leads as needed and strip wire leads back
1/4".
3. Ensure that the mounting plate is aligned with the
word "TOP" at the top and facing out and secure metal
mounting plate to surface using screws appropriate
for the mounting surface (not supplied). Place
insulator over studs on mounting plate (Figure 2).
Prior to starting installation, refer to Figure 1 for bell size.
The metal mounting plate supplied with these bells mounts
directly on the surface of any single or double gang 3"
octagon box, 4" octagon box or 4" square wall box or
their plaster cover (boxes and covers supplied by others).
For outdoor mounting, use Cat. No. 449 weatherproof box
(ordered separately) as shown in Figure 1.
Wall Box Mounting (Figure 3)
1. Remove screw and lockwasher from front of gong and
remove gong. Retain hardware and gong.
2. Pull bell lead wires through hole in insulator
(Figure 2).
3. Feed the power source wiring from electrical outlet
box through the metal mounting plate. Ensure that
the mounting plate is aligned with the word "TOP" at
the top and facing out and secure metal mounting
plate to electrical outlet box with appropriate
hardware (not supplied).
CAUTION
Break wire run to provide electrical supervision. Do NOT
loop bell lead wires around signal circuit wiring.
4. Using wire nuts (not supplied), connect wires to circuit
and push wires and connections down inside the
electrical box (Figures 3 and 5).
5. Mount insulator and bell body onto studs of metal
mounting plate (Figures 2 and 3). Secure using two
lockwashers and two nuts (supplied).
CAUTION
Break wire run to provide electrical supervision. Do NOT
loop bell lead wires around signal circuit wiring.
4. See Figure 4. Using wire nuts (not supplied), connect
wires to circuit. Push connected wires into bell through
entrance hole in bell body base, while mounting
insulator and bell body onto studs of metal mounting
plate. Secure the bell body onto the metal mounting
plate using two lockwashers and two nuts (supplied).
5. Align the tabs on the back of the gong with the grooves
in the bell body and secure with the screw and
lockwasher removed in step 1.
Applying Power
WARNING
This device will not operate without electrical power. As
fires frequently cause power interruptions, we suggest you
discuss further safeguards with your local fire protection
specialist.
1. Apply power to fire alarm or system control panel.
2. Initiate an alarm to activate bell and verify that it
sounds.
3. Reset panel to silence bell and return panel to
supervisory mode.
Maintenance
CAUTION
Always disconnect all power before servicing or cleaning
bell.
Examine bell annually for accumulation of dirt and clean
when necessary.

2. Figure 4. Installing the Adaptabel, Surface Mount
$GDSWDEHOO
Gong
Bell Body
Insulator
Mounting Plate
Attach green ground wire to appropriate earth
ground. Electrical box grounding shown for
illustration purpose only.
Grooves for
aligning gong
Figure 1. Bell Dimensions
Page 2P/N P-047550-0590 ISSUE 6
Assemble bell base to mounting
plate with (2) lockwashers and
(2) nuts (supplied with bell)
9" Leads -
(2) black and (2) red.
1/4" stripped.
10" Gong
8" Gong
6" Gong
2 29/32"
(73.8 mm)
3 11/32"
(84.9 mm)
3 15/32"
(88.1 mm)
Center line
of base
7"
(177.8 mm)
5"
(127 mm)3"
(76.4 mm)
5 1/16"
(128.6 mm)
5 1/2"
(139.7 mm)
5 5/8"
(142.9 mm)
Base
4 5/8"
(117.5 mm)
11/16"
(17.5 mm)
Outlet 3/4" (19 mm)
Outlet 3/4" (19 mm)
Optional
weatherproof box
Cat. No. 449
Insulator
TOP
Front ViewSide View
For wall box mounting:
Use bell wire exit hole in mounting
plate for bringing bell lead wires out
for connections in electrical outlet box
For surface mounting:
Use wire entrance hole in bell body for
circuit wiring to bell lead connections.
Place connections in bell housing,
behind insulator.
(2) Studs
Figure 2. Metal Mounting Plate and Insulator
Figure 3. Installing the Adaptabel, Wall Mount
Blk Blk
Red Red
From supervised
signal circuit or
previous appliance
End of line
resistor
Blk Blk
Blk Blk
Red Red
Wht
From supervised
signal circuit or
previous appliance
End of line
resistor
NOTE: Use leads for connections as shown. Wire run MUST be broken to provide supervision of signal
circuit.
Wiring for 4-wire bells to existing 3-wire signal circuit Wiring for 4-wire bells
Figure 5. Wiring Diagrams
Insulator
Mounting Plate
$GDSWDEHOO
Gong
Bell Body
Grooves for
aligning gong

3. FOLDDETAILREFERENCEONLY
P/NP-047550-0590OFFSETSPEC
INSTALLATIONINSTRUCTIONSFORCATALOG
SERIES439DSERIESFIREALARMBELLS
(1)81/2"x11"SHEETPRINTEDBOTHSIDES.
FOLDTWOTIMESTODIMENSIONSSHOWNON
DETAILWITHPARTNUMBERONTHEOUTSIDE.
MATERIAL:STANDARDWHITEOFFSETSTOCK
CHARACTERS:TOBEBLACKONWHITEBACK-
GROUND
NOTE:MECHANICALSHAVEALREADYBEEN
REDUCEDTOACTUALSIZE.
RETURNMECHANICALTO:
TECHNICALWRITING
EDWARDSSIGNALING
90FIELDSTONECOURT
CHESHIRE,CT06410
ECN:01-C1498
FILE:FC6983
ISSUE:6
APPROVED:KRT
P/NP-047550-0590