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WIRING AND MOUNTING INFORMATION:
CAUTION: The following figures (A-D) show the maximum number of field wires (conductors) that can enter the backbox used with each mounting option. If
these limits are exceeded, there may be insufficient space in the backbox to accommodate the field wires and stresses from the wires could damage the product.
CAUTION: Check that the installed product will have sufficient clearance and wiring room prior to installing backboxes and conduit, especially if sheathed
multiconductor cable or 3/4" conduit fittings are used.
Although the limits shown for each mounting option comply with the National Electrical Code (NEC), Wheelock recommends use of the largest backbox option shown
and the use of approved stranded field wires, whenever possible, to provide additional wiring room for easy installation and minimum stress on the product from wiring.
FLUSH MOUNTING
A
STD. SINGLE-GANG
BACKBOX
NS MOUNTING PLATE
(NSMP)
NS BEAUTY PLATE
MAXIMUM NUMBER OF CONDUCTORS
AWG #18 AWG#16 AWG#14 AWG#12
4
4
4
FLUSH OR SURFACE MOUNTING
C
DOUBLE-GANG X 2-1/4"
DEEP BACKBOX
NS MOUNTING PLATE
(NSMP)
NS BEAUTY PLATE
MAXIMUM NUMBER OF CONDUCTORS
AWG #18 AWG#16 AWG#14 AWG#12
4
4
4
1.
This NS model can be flush mounted to a standard single-gang backbox (Figure A), 4" or 100mm backbox (Figure B) or double-gang backbox (Figure C). It can
also be surface mounted to a 4" or 100mm backbox (Figure B), double-gang backbox (Figure C) or the SHBB (Figure D). Mounting hardware for each mounting
option is supplied.
2.
Conduit entrances to the backbox should be selected to provide sufficient wiring clearance for the installed product. Do not pass additional wires (used for other
than the signaling appliance) through the backbox. Such additional wires could result in insufficient wiring space for the signaling appliance.
3.
When terminating field wires, do not use more lead length than required. Excess lead length could result in insufficient wiring space for the appliance.
4.
Use care and proper techniques to position the field wires in the backbox so that they use minimum space and produce minimum stress on the product. This is
especially important for stiff, heavy gauge wires and wires with thick insulation or sheathing.
5.
This NS model has an integrated strobe mounting plate (SMP) which must be oriented correctly when it is mounted to the backbox. Turn the SMP so that the
arrow above the words "Horizontal Strobe" points to the top side.
6.
Move the selector switch to the desired candela setting. The setting is indicated by a pointer and can be seen on the bottom side of the lens. See Figure 1.
7.
Mount the SMP first to the backbox. Next slide the beauty plate over the SMP until the 2 snaps of the beauty plate engage with the SMP.
8.
The beauty plate can be removed from the strobe assembly once engaged. First, gently insert a screwdriver into one of the slots located on the top and bottom
edges of the beauty plate. Second, gently pull away from the wall with the inserted screwdriver to disengage the snap. Third, repeat the first and second steps for
the second slot. Finally, gently lift the beauty plate away from the SMP.
WARNING: WHEN INSTALLING STROBES IN AN OPEN OFFICE OR OTHER AREAS CONTAINING PARTITIONS OR OTHER VIEWING
OBSTRUCTIONS, SPECIAL ATTENTION SHOULD BE GIVEN TO THE LOCATION OF THE STROBES SO THAT THEIR OPERATING EFFECT
CAN BE SEEN BY ALL INTENDED VIEWERS, WITH THE INTENSITY, NUMBER, AND TYPE OF STROBES BEING SUFFICIENT TO MAKE SURE
THAT THE INTENDED VIEWER IS ALERTED BY PROPER ILLUMINATION, REGARDLESS OF THE VIEWER'S ORIENTATION. FAILURE TO
DO SO COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.
WARNING: THE NS HORN STROBE IS A "FIRE ALARM DEVICE - DO NOT PAINT."
CAUTION: If these appliances are operated within 15 inches of a person's ear, they can produce a sound pressure level that exceeds the maximum 120dBA
permitted by ADA and OSHA rules. Exposure to such sound levels can result in damage to a person's hearing.
However, it is recommended that the
jumper plug be retained in the unit for
future use (if needed) as shown.
FLUSH OR SURFACE MOUNT
B
4" SQ. X 1-1/2" DEEP BACKBOX
OR 100mm X 37.5mm
EUROPEAN BACKBOX
#6-32
SCREWS
NS MOUNTING PLATE
(NSMP)
NS BEAUTY PLATE
MAXIMUM NUMBER OF CONDUCTORS
AWG #18 AWG#16 AWG#14 AWG#12
4
4
4
SURFACE MOUNT
D
5" SQ. X 1-9/16" DEEP
SHBB BACKBOX
#6-32
SCREWS
NS MOUNTING PLATE
(NSMP)
NS BEAUTY PLATE
MAXIMUM NUMBER OF CONDUCTORS
AWG #18 AWG#16 AWG#14 AWG#12
4
4
4
FROM PRECEDING
APPLIANCE, FACP
OR SYNC MODULE
#8-32
SCREWS
When the sync module is used, the audible tone will be the code 3
sound only. Refer to installation instruction sheets for SM (P83123),
DSM (P83177) or Wheelock power supplies for additional information.
Figure 7:
4
4
#8-32
SCREWS
4
4
Figure 6:
+
-
•
The NS has in-out wiring terminals that accepts
two #12 to #18 American Wire Gauge (AWG)
wires at each screw terminal. Strip leads 3/8"
inches for connection to screw terminals.
•
Break all in-out wire runs on supervised circuit
supervision as shown in Figure 7. The polarity
shown in the wiring diagrams is for the
operation of the appliances.
reversed by the FACP during supervision.
TO NEXT SIGNAL
OR END OF LINE
RESISTOR (EOLR)
The polarity is
P84234H
Sheet 3 of 4
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