Wheelock TBH-104 Installation Instructions

Long Branch, N.J. 07740 (732) 222-6880 INSTALLATION INSTRUCTIONS TALKBACK HORN SYSTEM MODEL NUMBER: TBH-104 APPLICATION INFORMATION: WARNING: 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. The TBH-104 is a two component talkback system which consists of a control unit and an 8 ohm horn, both of which are designed for ...

telephone system manufacturer. 2. If unused CO port requires talk battery to pass audio (most do), then install using a Wheelock RPS-2406 power supply as shown in Figure 4A. For multi-zone applications, a Wheelock Zone Control is required as an interface. 3. "INH" is used only when TBH-104 is connected to a Wheelock Zone Control. The "INH" wire inhibits (disconnects) talkback when an all zone page is initiated. Use adjacent "GND" wire only when TBH-104 and Zone Control are using separate power supplies. Whe ...

WIRING INFORMATION: The TBH-104 control unit is provided with 4 knockouts to accommodate 1/2 inch conduit for installation purposes. When mounting the TBH-104 outdoors, a 1/2 inch conduit with rain tight fittings must be used to prevent damage to the unit due to water. Follow the procedure below, and refer to Figure 5, when wiring to the TBH-104: - Make sure the 24VDC Power Supply is disconnected from 115VAC Power Source. - Remove cover of control unit by removing the 2 holddown screws; 4 more holddown screws are contained in a plastic bag within the enclosure. - Connect 24VDC power supply "+" and "-" to Control ...

NOTE: If Zone Control is not used, then install jumper between adjacent terminals "INH" and "GND". TROUBLING SHOOTING: CONDITION CHECK 1. No sound in page mode. 1) Check that horn volume control is turned up (clockwise). 2) Check presence and polarity of -24VDC and GND. 3) Check audio presence and level on TIP and RING at TBH-104 Control Unit , and if necessary also at the audio source. (-15dBM is minimum audio level required) 2. Low volume in page mode. 1) Check that "HORN VOL" (PAGE) control in Control Unit is turned up (clockwise). 2) Check audio presence and level on TIP and RING at Control Unit, a ...