wheelock ZNH, ZNS-MCC, ZNS-MCCH, ZNS-MCWH, ZNS-MCW Service Manual

Series ZRS Strobes, ZNS Horn Strobes and Series ZNH Horns

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Series ZNS

Description:

The Wheelock Series Z notification appliances feature an easy snap
on base that is designed to simplify the installation and testing of
horns, strobes, and horn/strobes. The separate Series Z snap on
base can be pre-wired so circuit wiring can be fully tested before
the appliance is installed and before the walls are covered. Once
all surrounding work is complete, the appliance can be simply
installed by snaping it on the base. Shorting contacts in the base,
which provide continuity for circuit testing, are permanently opened
when the appliance is installed so any subsequent removal of the
appliance will indicate a trouble condition on that circuit at the control
panel when circuit supervision is enabled. The same base is used
for all Series Z horns, strobes and horn/strobes to provide consistent
installation and easy replacement of appliances if required. A locking
screw is also included for the appliance to provide extra secure
installation.

The Wheelock Series Z appliances incorporate the same dependable
circuitry and high efficiency optics that are used in Wheelock RSS
strobes, NS horn/strobes and NH horns and have the same high
performance ratings. The Series Z appliances are compatible with
all UL listed “Regulated” panels and all panels that are compatibility
listed with Wheelock RSS, NS and NH appliances.

Series ZNH

Features:

• Approvals include: UL Standard 1971, UL Standard 464,
New York City (MEA), California State Fire Marshal (CSFM),
Factory Mutual (FM) and Chicago (BFP). See approvals by
model number in Specifications and Ordering Information

• ADA/NFPA/UFC/ANSI and OSHA 29, Part 1910, 165
compliant

• EZ Mount SNAP design, with separate base plate, provides
ability to pre-wire the base and test the circuit wiring before
the walls are covered

• The base plate is protected by a disposable cover and the
appliances can quickly snap onto the base after the walls are
painted.

• Patented EZ Mount Universal Mounting Plate (ZBASE)
– uses single plate for ceiling and wall mount installations

• Wall Mount models feature field selectable candela settings
of 15/30/75/110cd and 135/185cd

• Ceiling Mount models feature field selectable candela
settings of 15/30/75/95cd and 115/177cd

• Strobes can be synchronized using the Wheelock sync
modules or power supplies with built-in sync protocol

• 12 and 24 VDC models with UL “Regulated Voltage” using
filtered DC or unfiltered VRMS input voltage

• Strobes produce 1 flash per second over the “Regulated
Voltage” range (ZNS, ZRS models)

• Selectable Continuous Horn or Temporal (Code-3) Tones with
selectable 90 or 95 dBA setting (ZNH, ZNS models)

• Selectable 12 or 24VDC in 1 appliance (ZNH model)

Series ZRS

Series ZRS

ZNS, ZNH and ZRS
appliances go onto the
base plate in a SNAP.

NOTE: All CAUTIONS and WARNINGS are identified by the symbol . All warnings are printed in bold capital letters.

WARNING: PLEASE READ THESE SPECIFICATIONS AND ASSOCIATED INSTALLATION INSTRUCTIONS CAREFULLY BEFORE USING, SPECIFYING

OR APPLYING THIS PRODUCT. VISIT WWW.COOPERWHEELOCK.COM OR CONTACT COOPER WHEELOCK FOR THE CURRENT INSTALLATION
INSTRUCTIONS. 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.

General Notes:

• Strobes are designed to flash at 1 flash per second minimum over their “Regulated Voltage Range”.

• All candela ratings represent minimum effective strobe intensity based on UL Standard 1971.

• Series ZNS Strobe products are listed under UL Standards 1971 and 464 for indoor use with a temperature range of 32°F to 120°F (0°C to
49°C) and maximum humidity of 93% (± 2%).

• Series ZNH horns are listed under UL Standard 464 for audible signal appliances (Indoor use only).

• “Regulated Voltage Range” is the newest terminology used by UL to identify the voltage range. Prior to this change UL used the terminology
“Listed Voltage Range”.

Table 1: Series ZNS Ratings Per UL Standard 1971

Regulated

Voltage

Range

VDC/FWR

Strobe Candela

(CD)

Model

Input

Voltage

VDC

ZNS-MCW 24 16.0 - 33.0 15/30/75/110

ZNS-MCWH 24 16.0 - 33.0 135/185

ZNS-MCC 24 16.0 - 33.0 15/30/75/95

ZNS-MCCH 24 16.0 - 33.0 115/177

Table 2: Series ZNS/ZNH Horn dBA Ratings

Reverberant dBA

Description Volume

Continuous

Horn

Code 3

Horn

High 83 87 89 95

Low 76 81 84 90

High 79 82 89 95

Low 72 76 84 90

@ 10ft per UL 464

12

VDC

24

VDC 12VDC24VDC

Anechoic dBA

@ 10 ft

Table 3: Series ZNS UL Max. Current*

Audible Wall Mount Strobe Models Ceiling Mount Strobe Models

Series ZNS/ZNH

24 VDC

ZNH-12/24

ZNS-MCW ZNS-MCWH ZNS-MCC ZNS-MCCH

15cd 30cd 75cd 110cd 135cd 185cd 15cd 30cd 75cd 95cd 115cd 177cd

High (95) dBA

Low (90) dBA 0.018 0.066 0.101 0.177 0.232 0.306 0.429 0.071 0.114 0.201 0.261 0.306 0.429

16-33

VDC

Series ZNS/ZNH

12VDC

0.044 0.074 0.107 0.184 0.244 0.350 0.477 0.082 0.124 0.209 0.275 0.350 0.477

Audible

ZNH-12/24

High (89) dBA

Low (84) dBA 0.012

8-17.5

VDC

0.021

Table 4: Series ZRS UL Max. Current*

ZRS - Wall Mount ZRS - Ceiling Mount

ZRS 24VDC

MCW MCWH MCC MCCH

Models

15cd 30cd 75cd 110cd 135cd 185cd 15cd 30cd 75cd 95cd 115cd 177cd

16-33 vdc 0.060 0.092 0.165 0.220 0.300 0.420 0.065 0.105 0.189 0.249 0.300 0.420

* UL max current rating is the maximum RMS current within the listed voltage range (16-33v for 24v units). For strobes
the UL max current is usually at the minimum listed voltage (16v for 24v units). For audibles the max current is usually
at the maximum listed voltage (33v for 24v units). For unfiltered FWR ratings, see installation instructions.