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P83641 J 

Sheet 1 of 6 

 

273 Branchport Avenue 
Long 

Branch, 

NJ 

 

07740 

       

Thank you for using our products.

 

(800)  631-2148 
www.wheelockinc.com 

        

INSTALLATION 

INSTRUCTIONS 

SERIES AH-WP INDOOR/OUTDOOR AUDIBLE HORN APPLIANCES

 

 

Use this product according to this instruction manual.  Please keep this instruction manual for future reference. 

 

GENERAL: 

Wheelock’s AH-WP Audible Horn Appliances are designed to provide a selectable continuous horn or code 3 tone when 
connected directly to the Fire Alarm Control Panel (FACP), or provide a synchronized code 3 horn when used in conjunction 
with a Sync Module (SM), Dual Sync Module (DSM) or Wheelock’s Power Supplies.  The AH-WP Appliances are UL Listed 
under UL Standard 464 for Audible Signal Appliances.  The AH-24WP is ULC Listed under Standard CAN/ULC-S525-99 for 
Audible Signaling Appliances.  They are listed for indoor and outdoor use and can be mounted to a 4” backbox (See Mounting 
Options). 
 
AH-WP Appliances can be field set to provide either High (HI) dBA, Medium (MED) dBA or Low (LO) dBA sound output. 
 
All AH-WP models are designed for use with either filtered DC (VDC) or unfiltered Full-Wave-Rectified (FWR) input voltage.  
All inputs are polarized for compatibility with standard reverse polarity supervision of circuit wiring by a FACP. 
 

NOTE:

  The code 3 horn incorporates the 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) specified by ANSI/NFPA for standard emergency evacuation signaling.  

The code 3 horn shall 

be used only for fire evacuation signaling and not for any other purpose. 

 
NOTE:

  All 

CAUTIONS

 and 

WARNINGS

 are identified by the symbol 

.  All warnings are printed in bold capital letters. 

 

WARNING:  THE AH-WP APPLIANCE IS A "FIRE ALARM DEVICE - DO NOT PAINT." 
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. 
 
SPECIFICATIONS: 

 

Table 1:  UL/ULC Listed Models and Ratings 

Maximum RMS Current (AMPS) 

DC  

FWR  

Model 

Regulated 

Voltage 

(VDC/VRMS) 

UL Voltage 

Range 

(VDC/VRMS) 

ULC Voltage 

Range 

(VDC/VRMS)

Lo Med Hi  Lo Med Hi 

AH-24WP  24 

16-33 

20-31 

0.021 0.043 0.080 0.041 0.051 0.090 

AH-12WP 12 

8-17.5 

 

-----  0.058 

0.108 0.192 0.059 0.109 0.209 

 

Model AH-12WP is not ULC listed. 

 

 

Table 1A:  ULC Current Ratings 24VDC Models 

Average Current (AMPS) 

Model ULC 

Voltage 

(VDC/VRMS)

Lo Med Hi 

20.0 .014 

.020 

.035 

24.0 .017 

.025 

.050 

AH-24 

31.0 .021 

.030 

.065 

 

 

Copyright 2005 Wheelock, Inc.  All rights reserved. 

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