Wheelock MB Series
Motor Bells
Features
• High sound output with low
current draw.
• Low frequency aluminum shells
for better audibility through walls,
doors and other structures.
• 6” and 10” shell sizes in 12 or 24
VDC models.
Description
Wheelock’s Series MB Motor Bells
provide a better engineered motor bell
for fire and life safety alarm systems.
The Wheelock Series MB Bells include
higher dBA, low current draw, built-in
trimplate for semi-flush mounting, low
frequency aluminum shells, and low RFI
noise. The motor for Series MB Bells is
a durable, high torque permanent
magnet motor selected for its high
performance and long life.
Series RSSP Sync/Non-Sync retrofit
plates are used in conjunction with the
Series MB Motor Bell when combination
appliances are required. The Series
RSSP retrofit plates are available with
either Multi-Candela or single candela
strobes and easily mount to a 4” square
or Wheelock SBL-2 backbox. All Series
RSSP strobe appliances meet or exceed
the requirements of NFPA 72 (National
Fire Alarm Code), ANSI 117.1 (American
National Standard for Accessible and
Usable Buildings and Facilities), ADA
(Americans with Disabilities Act) and UL
Standard 1971 (Signaling Devices for the
Hearing Impaired).
The Series RSSP retrofit plates may be synchronized when installed with the
Wheelock Series SM, DSM, Sync Modules or a Power Supply with Wheelock’s
patented sync protocol. Wheelock’s synchronized strobes offer an easy way to
comply with ADA requirements concerning photo-sensitive epilepsy.
The alarm appliances shall be Wheelock Series MB vibrating Motor Bells or
approved equal. They shall be UL Standard 464 Listed for Fire Protective
Service. Shells shall be aluminum in 6” or 10” diameter. Sound output at 10
feet shall be 92 dBA. The bells shall incorporate a permanent magnet motor
and suppression circuitry to minimize RFI. They shall include a built-in
trimplate for semi-flush mounting to a standard 4” square backbox, or surface
mounting to Wheelock’s indoor BB backbox or outdoor WBB backbox. For
bell strobe applications, retrofit plates Wheelock Series RSSP with MultiCandela or Single Candela strobes shall be used. All bell models shall be
polarized for line supervision and shall have screw terminals for in-out field
wiring of #12 to #18 AWG wire. Operating voltage shall be nominal 24 VDC or
12 VDC. Finish on all models shall be red enamel.
CS-2236
05/04/04
• Mounting options for surface,
semi-flush, outdoor, and concealed conduit installation.
• Built-in trimplate makes semiflush mounting simpler and less
expensive
• Polarized for DC supervision of
NAC circuits.
• Operates on filtered or unfiltered
DC.
Listings
Listings and approvals below
apply to Wheelock MB Series
Motor Bells. In some cases,
certain modules may not be
listed by certain approval agencies, or listing may be in process. Consult factory for latest
listing status.
• UL Listed: file E5946
• ULC Listed: file CS243
• FM approved.
• MEA approved: file 151-92-E.
• CSFM approved: files 71350785:113.
Engineer’s Specification
MB Series Motor Bells
• Integral RFI suppression to
minimize included noise on the
NAC circuit.
Page 1 of 2
Ordering Information
MODEL
NUMBER
MB-G6-12-R
INPUT
SHELL
VOLTAGE
SIZE
(VDC)
6"
12
6"
24
0.030
MB-G10-12-R
10"
12
0.060
MB-G10-24-R
10"
24
0.030
15/30/75/110
AVERAGE CURRENT
(amps) @ LISTED
VDC
.050/.081/.133/.161
RSSP-241575W-FR
24
15 (75 on axis)
0.065
RSSP-121575W-FR
12
15 (75 on axis)
0.170
RSSP-24MCW-FR
0.060
MB-G6-24-R
NOMINAL
VOLTAGE
(VDC)
24
MODEL
NUMBER
INPUT
CURRENT
STROBE
CANDELA
1. Mounting options are: D,E,Z
2. Average current per actual Wheelock product testing at listed VDC.
For rated average and peak current across UL regulated voltage range
for both filtered DC and unfiltered VRMS, see Installation instructions.
NOTES:
1. Typical dBA at 10 feet is 92, measured in an
anechoic chamber.
2.Mounting options are: D,E,J,K,N,R,S,Z
3. For bells at 12 VDC models are UL rated for 9.0 to
15.6 VDC and all 24 VDC models for 18.0 to 31.0
SYNC MODELS/POWER SUPPLY
M ODEL
NUM BER
INP UT
VOLTAGE
(VDC)
AVERAGE
M EAN
CURRENT
@ 24 VDC
SM-12/24-R
24
.028
W
DSM-12/24-R
24
.035
W
M OUNTING
OP TIONS**
SM Sync Module is rated for 3.0 amperes @ 24VDC.
DSM Sync Module is rated for 3.0 amperes per circuit. The maximum number of
interconnected DSM modules is twenty (20).
** Refer to mounting options data sheet.
Wiring Diagram
Fig. 1 Bell Models
Fig. 2 Retrofit Strobe
+
FRO M
PRECED ING
APPLIAN CE
OR FACP
-
{
}
TO NEXT
APPLIANC E
OR END -OF-LINE
R ESISTOR
(EO LR )
FRO M
PREC ED IN G
APPLIAN CE OR
FAC P
FRO M
PREC ED IN G
STR O BE O R
FAC P
AUDIBLE
STROBE
+ -
+-
+
+
+
+
TO NEXT
APPLIANC E
O R EO LR
TO N EXT
ST RO BE OR
EO LR
Wheelock products must be used within their published specifications and must be PROPERLY specified, applied, installed,
operated, maintained and operationally tested in accordance with their installation instructions at the time of installation and at
least twice a year or more often and in accordance with local, state and federal codes, regulations and laws. Specification,
application, installation, operation, maintenance and testing must be performed by qualified personnel for proper operation in
accordance with all of the latest National Fire Protection Association (NFPA), Underwriters’ Laboratories (UL), National Electrical
Code (NEC), Occupational Safety and Health Administration (OSHA), local, state, county, province, district, federal and other
applicable building and fire standards, guidelines, regulations, laws and codes including, but not limited to, all appendices and
amendments and the requirements of the local authority having jurisdiction (AHJ).
WARNING
The Gamewell Company
12 Clintonville Road
Northford, CT 06472-1610
Phone: 203-484-7161
Fax: 203-484-7118
www.gamewell.com
A Honeywell Company
© 2004 Gamewell
PLEASE READ THESE SPECIFICATIONS AND ASSOCIATED INSTALLATION INSTRUCTIONS
CAREFULLY BEFORE USING, SPECIFYING OR APPLYING THIS PRODUCT. FAILURE TO COMPLY WITH ANY OF THESE INSTRUCTIONS, CAUTIONS OR WARNINGS COULD RESULT IN
IMPROPER APPLICATION, INSTALLATION AND/OR OPERATION OF THESE PRODUCTS IN AN
EMERGENCY SITUATION, WHICH COULD RESULT IN PROPERTY DAMAGE, AND SERIOUS
INJURY OR DEATH TO YOU AND/OR OTHERS.
Specifications and wiring information are provided for information only and are believed
to be accurate. Gamewell assumes no responsibility for their use.
Data and design are subject to change without notice. Installation and wiring
instructions shipped with the product shall always be used for actual installation. For
more information, contact Gamewell.
Page 2 of 2
MB Series Motor Bells
CS-2236
05/04/04