GAI-Tronics DHS-201 Digital Intercom Stations - Manual (Page 7)

Pub. 42004-453C
M ODEL DHS/DHF 200 S ERIES D IGITAL I NTERCOM S TATIONS Page 5 of 25
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Installation
General Information
WARNING
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and
D, Class II Division 2, Groups F, and G, Class III OR non-hazardous locations only. Combinations
of equipment in your system are subject to investigation by the local Authority Having Jurisdiction
at the time of installation.
WARNING
EXPLOSION HAZARD – Do not disconnect equipment unless power has
been removed or the area is known to be non-hazardous.
WARNING
EXPLOSION HAZARD - Substitution of components may impair suitability
for Class I, Division 2.
Averttissement – Risque d’explosion - la substitition de composants peut rendre ce matériel
inacceptable pour les em-placements de Classe 1, Division 2.
Averttissement – Risque d’explosion – avant de déconnector l’equipment, couper le courant ou
s’assurer que l’emplacement est désigné non dandereux.
Install equipment without modification and according to all applicable local and national electrical codes.
USA and Canada Consult the National Electrical Code (NFPA 70), Canadian Standards Association
(CSA 22.1), and local codes for specific requirements regarding your installation. Class 2 circuit wiring
must be performed in accordance with NEC 725.55.
General Installation Guidelines
This station contains a high gain amplifier, which enables operation in high noise environments. To
prevent feedback problems in the system, the ambient noise levels, volume settings, and station placement
must be taken into consideration. Unpleasant feedback problems can be reduced by taking the following
measures:
 Pointing the speaker away from nearby Intercom Stations
 Placing the speakers in separate rooms from Intercom Stations
 Reducing volume levels
Security Hardware
The stations in the manual are vandal resistant. The front panel is attached to its enclosure with security
screws. A GAI-Tronics Model 233-001 Security Screwdriver or Torx T-25 security head tip (sold
separately) is required for installing or removing the front panel.