wheelock ZNH, ZNS-MCCH, ZNS-MCC, ZNS-MCW, ZRS-MCC INSTALLATION INSTRUCTIONS
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273 Branchport Ave.
Long Branch, N.J. 07740 Thank you for using our products.
(800) 631-2148
www.cooperwheelock.com INSTALLATION INSTRUCTIONS
SERIES Z 2-WIRE FIELD SELECTABLE HORN,
STROBE, AND HORN/STROBE APPLIANCES
(WALL AND CEILING MOUNT )
GENERAL:
Use this product according to this instruction manual. Please keep this instruction manual for future reference.
The Cooper Wheelock Series Z horn, strobe, and horn/strobe appliances are designed for easy installation. The ZNS horn/strobes and ZRS strobes are for 24V
operation and the ZNH horn is for 12V or 24V operation. The appliance comes in two main parts. The universal mounting back plate allows the appliance to be
mounted to a single-gang, double-gang, four square backbox, 4” octagon backbox, or a 3 ½” octagon backbox. Two wire appliance wiring is then connected to the
mounting back plate. This allows a continuity check of the entire NAC circuit before any appliances are attached. It also allows the appliances to be installed after all
finish work has been completed. The installer can snap or install the appliances when all other work is complete.
WARNING: PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE USING THIS PRODUCT. FAILURE TO COMPLY WITH ANY
OF THE FOLLOWING INSTRUCTIONS, CAUTIONS AND WARNINGS COULD RESULT IN IMPROPER APPLICATION, CANDELA SETTING,
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:
Table 1: Models and Settings
Model
ZRS-MCW 24 16-33 15/30/75/110 - 3 Wall
ZRS-MCWH 24 16-33 135/185 - 3 Wall
ZRS-MCC 24 16-33 15/30/75/95 - 3 Ceiling
ZRS-MCCH 24 16-33 115/177 - 3 Ceiling
ZNS-MCW 24 16-33 15/30/75/110 X 4 Wall
ZNS-MCWH 24 16-33 135/185 X 4 Wall
ZNS-MCC 24 16-33 15/30/75/95 X 4 Ceiling
ZNS-MCCH 24 16-33 115/177 X 4 Ceiling
ZNH
Strobe and Horn Strobe Appliances
Cooper Wheelock’s Series Horn Appliances provide a selectable Continuous or Code 3 Horn tone when connected directly to the Fire Alarm Control Panel (FACP).
They can also provide a synchronized Code 3 Horn tone when used in conjunction with an FACP that incorporates the Wheelock sync protocol, a Wheelock Sync
Module, or the Wheelock Power Supply. The Horn Appliances can be field set for High (HI) or Low (LO) dBA sound output. The Horn Appliances are UL Listed
under Standard 464 for Audible Signal Appliances. They are listed for
unfiltered Full-Wave-Rectified (VRMS) input voltage. All inputs are polarized for compatibility with standard reverse polarity supervision of circuit wiring by a
FACP. The ZNS Horn/Strobe is for 24V operation only. The ZNH Horn is for 12V or 24V operation.
Regulated
Voltage
(VDC/VRMS)
12
24
NOTE: The ZRS, ZNS, and ZNH are electrically identical to the corresponding RSS, NS, and NH models. Therefore, they carry the
existing UL compatibility listings.
NOTE: The Code 3 temporal pattern (1/2 second on, 1/2 second off, 1/2 second on, 1/2 second off, 1/2 second on, 1-1/2 off and repeat) is specified by ANSI and
NFPA 72 for standard emergency evacuation signaling.
Voltage Range
Limit per UL
1971
(VDC/VRMS)
8-17.5
16-33
indoor use only. These models are designed for use with either filtered DC (VDC) or
The Code 3 Horn should be used only for fire evacuation signaling and not for any other purpose.
Strobe
(cd)
- X 5
Horn
Current Draw
See Table
Mounting
Wall or
Ceiling
Table 2: ZNH and ZNS Horn Reverberant dBA per UL464
ZNH at 12V ZNS and ZNH at 24V
8.0V 12V 17.5V 16.0V 24V 33.0V
Horn
Code 3 Horn
High 78 83 86 83 87 90 Continuous
Low 72 76 80 77 81 83
High 75 79 82 79 82 86
Low 67 72 74 72 76 79
Copyright 2007 Cooper Wheelock, Inc. All rights reserved. P84860 E
Sheet 1 of 4
CURRENT DRAW:
Table 3: ZRS Strobe Current Draw (Amps) at 16-33 Volts
Strobe Setting (cd)
MCW MCWH MCC MCCH
15 30 75 110 135 185 15 30 75 95 115 177
DC 0.060 0.092 0.165 0.220 0.300 0.420 0.065 0.105 0.189 0.249 0.300 0.420
FWR 0.102 0.155 0.253 0.347 0.455 0.645 0.110 0.170 0.280 0.375 0.455 0.645
Table 4: ZNS Horn/Strobe Current Draw (Amps) at 16-33 Volts
Strobe Setting (cd)
MCW MCWH MCC MCCH
DC
FWR
Horn
Setting
High* 0.074 0.107 0.184 0.244 0.350 0.477 0.082 0.124 0.209 0.275 0.350 0.477
Low* 0.066 0.101 0.177 0.232 0.306 0.429 0.071 0.114 0.201 0.261 0.306 0.429
High* 0.133 0.189 0.285 0.383 0.491 0.681 0.141 0.204 0.312 0.411 0.491 0.681
Low* 0.116 0.169 0.274 0.369 0.469 0.659 0.124 0.184 0.301 0.397 0.469 0.659
15 30 75 110 135 185 15 30 75 95 115 177
* Current Draw is the same for the Continuous Horn and Code 3 Horn Settings.
Table 5: ZNH Horn Current Draw (Amps)
Horn
Setting
High* 0.021 0.044
DC
Low* 0.012 0.018
High* 0.054 0.075
FWR
Low* 0.030 0.045
* Current Draw is the same for the Continuous
NOTE: Candela and Horn Setting will determine the current draw of the product.
When calculating the total currents use Tables 3-5 to determine the highest value of RMS current for an individual appliance, then multiply these values by the total
number of appliances. Be sure to add the currents for any other appliances, including audible signaling appliances powered by the same source, and to include any
required safety factors.
NOTE: The maximum number of strobes on a single notification appliance circuit shall not exceed 50.
NOTE: These notification appliances are UL Listed as “Regulated”. They are intended to be used with FACPs whose notification circuits are UL Listed as
“Regulated.” These appliances shall not be used on UL Listed “Special Application” notification circuits unless the appliances are identified to be compatible in the
installation instructions of the FACP or unless the FACP is identified to be compatible in this instruction manual.
NOTE: THESE APPLIANCES WERE TESTED TO THE REGULATED VOLTAGE LIMITS OF 16.0-33.0 VOLTS FOR 24V MODELS AND 8-17.5
VOLTS FOR 12V MODELS USING FILTERED DC OR UNFILTERED FULL-WAVE-RECTIFIED VOLTAGE. DO NOT APPLY VOLTAGE
OUTSIDE OF THIS RANGE.
NOTE: CHECK THE MINIMUM AND MAXIMUM OUTPUT OF THE POWER SUPPLY AND STANDBY BATTERY AND SUBTRACT THE
VOLTAGE DROP FROM THE CIRCUIT WIRING RESISTANCE TO DETERMINE THE APPPLIED VOLTAGE TO THE STROBES. THE
MAXIMUM WIRE IMPEDANCE BETWEEN STROBES SHALL NOT EXCEED 35 OHMS.
NOTE: Strobes are not designed to be used on coded systems in which the applied voltage is cycled on and off.
NOTE: MAKE SURE THAT THE TOTAL RMS CURRENT REQUIRED BY ALL APPLIANCES THAT ARE CONNECTED TO THE SYSTEM’S
PRIMARY AND SECONDARY POWER SOURCES, NOTIFICATION APPLICIANCE CIRCUITS, SM, DSM SYNC MODULES, OR COOPER
WHEELOCK POWER SUPPLIES DOES NOT EXCEED THE POWER SOURCES’ RATED CAPACITY OR THE CURRENT RATINGS OF ANY
FUSES ON THE CIRCUITS TO WHICH THESE APPLIANCES ARE WIRED. OVERLOADING POWER SOURCES OR EXCEEDING FUSE
RATINGS COULD RESULT IN LOSS OF POWER AND FAILURE TO ALERT OCCUPANTS DURING AN EMERGENCY, WHICH COULD RESULT
IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.
WIRING AND MOUNTING BASE:
FROM PRECEDING
APPLIANCE, FACP OR
SYNC MODULE
{}
-
++
Figure 1:
TO NEXT APPLIANCE
OR END OF LINE
RESISTOR (EOLR)
Horn and Code 3 Horn Settings.
8-17.5 Volts 16-33 Volts
• All strobe appliances have in-out wiring terminals that accepts
two #12 to #18 American Wire Gauge (AWG) wires at each
screw terminal. Strip leads 3/8 inches and connect to screw
terminals.
• Break all in-out wire runs on supervised circuits to ensure
integrity of circuit supervision as shown in Figure 2. The
Figure 2:
polarity shown in the wiring diagrams is for the operation of
the appliances. The polarity is reversed by the FACP during
supervision.
P84860 E
Sheet 2 of 4
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