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P84432 G 

Sheet 5 of 6

 

 
MOUNTING PROCEDURES: 

 

Use this mounting procedure 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. 

 

1.

 

Connect field wires to the HS-24 terminal block (polarity must be observed). 

2.

 

Bend the field wires up 90

°

 at the connection to the terminal block. 

3.

 

Carefully push the field wires into the backbox by hand. 

4.

 

Carefully press the HS-24 to the backbox, verifying that the HS-24 is seated and aligned correctly. 

5.

 

Screw the HS-24 to the backbox using the screws supplied.  Refer to Mounting Options for screw size. 

 
 

MOUNTING NOTES: 

 

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. 

 

1.  Conduit entrances to the backbox should be selected to provide sufficient wiring clearance for the installed product. 
2.

 

When terminating field wires, do not use more lead length than required.  Excess lead length could result in insufficient 
wiring space for the signaling appliance. 

3.

 

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. 

 

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. 

 

This appliance can produce a distinctive three pulse Temporal Pattern Fire Alarm Evacuation Signal (for total evacuation) in 
accordance with NFPA 72. 

 

CAUTION:  

Check the installation instructions of the manufacturers of other equipment used in the system for any 

guidelines or restrictions on wiring and/or locating Notification Appliance Circuits (NAC) and notification appliances.  Some 
system communication circuits and/or audio circuits, for example, may require special precautions to assure electrical noise 
immunity (e.g. audio crosstalk). 

 

NOTE:

  This equipment has been tested and found to comply with the limits for a Class B digital appliance, pursuant to Part 15 

of the FCC Rules.  These limits are designed to provide reasonable protection against harmful interference in residential 
installation.  This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance 
with the instructions, may cause harmful interference to radio communications.  However, there is no guarantee that interference 
will not occur in a particular installation.  If this equipment does cause harmful interference to radio or television reception, 
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or 
more of the following measures:  1) Reorient or relocate the receiving antenna, 2) Increase the separation between the equipment 
and receiver, 3) Connect the equipment into an outlet on a circuit different from that to which the receiver is connected, and  4) 
Consult the dealer or an experienced radio/TV technician for help. 

 

The HS-24 and these instructions are copyrighted by Wheelock and the HS-24 contain proprietary, confidential and trade secrets 
of Wheelock.  No part of the HS-24 product and these instructions may be photocopied, printed or reproduced in any form or 
modified, adapted, changed or enhanced, or converted to another programming language, or used to create updated, related or 
derivative works, without the prior written consent of Wheelock.  No part of the HS Series products shall be decomposed, 
disassembled or reverse engineered. 

 

ANY MATERIAL EXTRAPOLATED FROM THIS DOCUMENT OR FROM WHEELOCK MANUALS OR OTHER 
DOCUMENTS DESCRIBING THE PRODUCT FOR USE IN PROMOTIONAL OR ADVERTISING CLAIMS, OR FOR ANY 
OTHER USE, INCLUDING DESCRIPTION OF THE PRODUCT'S APPLICATION, OPERATION, INSTALLATION AND 
TESTING IS USED AT THE SOLE RISK OF THE USER AND WHEELOCK WILL NOT HAVE ANY LIABILITY FOR 
SUCH USE. 

 

IMPORTANT:  READ SEPARATE "GENERAL INFORMATION" SHEET FOR INFORMATION ON THE 
PLACEMENT, LIMITATIONS, INSTALLATION, FINAL CHECKOUT, AND PERIODIC TESTING OF 
NOTIFICATION APPLIANCES. 

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