Wheelock SERIES NH User Manual

P83600 K
Sheet 1 of 6
273 Branchport Avenue
Long Branch, NJ 07740 Thank you for using our products.
(800) 631-2148 (USA)
(800) 397-5777 (CANADA) INSTALLATION INSTRUCTIONS
www.wheelockinc.com SERIES NH AUDIBLE APPLIANCES
Use this product according to this instruction manual. Please keep this instruction manual for future reference.
GENERAL:
Wheelock’s Series NH Audible 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 a Sync
Module (SM), Dual Sync Module (DSM) or the Power Supply (PS-12/24-8 UL ONLY). The NH Appliances are UL Listed under
Standard 464 for Audible Signal Appliances. The NH Appliances are also ULC Listed under Standard CAN/ULC-S525-99 for
Audible Signaling Devices for Fire Alarm Systems. They are listed for indoor use only
and equipped with a NH Mounting Plate
that can be mounted to single-gang, double-gang, 4” backbox, 100mm European backbox or SHBB surface backbox (See
Mounting Options).
Series NH Appliances can be field set for High (HI) or Low (LO) dBA sound output.
The NH models are designed for use with either filtered DC (VDC) or unfiltered Full-Wave-Rectified (VRMS) input voltage. All
inputs are polarized for compatibility with standard reverse polarity supervision of circuit wiring by a FACP.
NOTE: All CAUTIONS and WARNINGS are identified by the symbol
. All warnings are printed in bold capital letters
WARNING: THE NH AUDIBLE APPLIANCE IS A "FIRE ALARM DEVICE - DO NOT PAINT."
NOTE: All Canadian Installations should be in accordance with the Canadian Standard for the Installation of Fire Alarm Systems
- CAN/ULC-S524-01 and Canadian Electrical Code, Part 1. Final acceptance is subject to Authorities Having Jurisdiction.
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, 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.
WARNING: THE AUDIBLE HORN APPLIANCES MUST BE FIELD SET TO THE DESIRED TONE AND dBA
SOUND OUTPUT LEVEL BEFORE THEY ARE INSTALLED. THIS IS DONE BY PROPERLY INSERTING A
JUMPER PLUG IN ACCORDANCE WITH THESE INSTRUCTIONS. INCORRECT SETTINGS WILL RESULT IN
IMPROPER PERFORMANCE, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR
DEATH TO YOU AND/OR OTHERS.
SPECIFICATIONS:
Table 1: UL/ULC Listed Models and Ratings
Model
UL Max RMS Current
(AMPS)
ULC Rated Average
Current (AMPS)
Regulated
Voltage
(VDC/VRMS)
UL
Voltage
ULC Voltage
CAN/ULC-S525-99
Lo Hi Lo Hi
NH-12/24 24 16.0-33.0VDC 20.0-31.0VDC 0.018 0.044 0.018 0.033
16.0-33.0VRMS 20.0-31.0VRMS 0.045 0.075 0.045 0.075
12 8.0-17.5VDC 10.5-15.6VDC 0.012 0.021 0.012 0.021
8.0-17.5VRMS 10.5-15.6VRMS 0.030 0.054 0.030 0.054
Copyright 2005 Wheelock, Inc. All rights reserved.

Wheelock SERIES NH Specifications

General

Brand	Wheelock
Model	SERIES NH
Category	Horn
Language	English

Summary

General Information

Series NH Audible Appliances Overview

Provides selectable continuous or Code 3 Horn tone, UL/ULC listed for fire alarm systems.

Sound Output and Input Voltage

Field settable for High/Low dBA sound output, compatible with filtered DC or FWR input.

Important Safety Warnings

Includes warnings about painting the device and careful reading of instructions before installation.

Specifications and Ratings

UL/ULC Listed Models and Ratings

Details model numbers, voltage ranges, current ratings, and certifications.

dBA Sound Output for 24VDC Models

Lists reverberant and anechoic dBA output levels for 24VDC models by volume and tone.

dBA Sound Output for 12VDC Models

Lists reverberant and anechoic dBA output levels for 12VDC models by volume and tone.

ULC Directional Characteristics

Describes sound dispersion angles and corresponding dBA reduction for ULC listed appliances.

Power Supply and Wiring Warnings

Emphasizes checking power supply, battery, voltage drop, and avoiding overloading circuits.

Sound Output (SPL) Settings

Code 3 Horn Temporal Pattern

Describes the 1/2 sec on, 1/2 sec off pattern for emergency evacuation signaling.

Jumper Plug Configuration

Explains how to set jumper plugs for High/Low dB and Continuous/Code 3 Horn modes.

Factory and Custom Settings

Notes the factory setting is High dB/Code 3 and how to retain jumpers for future use.

Wiring and Mounting

Wiring Information

Details wire gauge compatibility, stripping length, and supervised circuit wiring.

Mounting Options and Backbox Capacity

Shows maximum conductors for backboxes and recommends larger boxes for easier installation.

Mounting Procedures

Covers NHMP orientation, beauty plate installation, wiring, and conduit considerations.

Audible Appliance Operation Precautions

Warnings about sound pressure levels exceeding ADA/OSHA limits and temporal pattern signals.

Warranty and Liability

Limited Warranty Terms

Details the three-year warranty, exclusions, and user responsibilities.

Limitation of Liability

Outlines Wheelock's liability limits for product claims, including negligence and consequential damages.