Norstar NT8B79FDE6, Руководство по установке

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Norstar Doorphone Installation Guide
8
Installation
Step 3: Wire and Mount the Doorphone
The Doorphone can be mounted in a standard recessed double-gang electrical box
for flush mounting or surface mounted using the enclosed optional surface mount
bracket.
The Doorphone should be mounted at approximately shoulder height in the absence
of other specifications, such as compliance with local handicapped access
regulations, if required.
To wire and mount the Doorphone on a wall:
1. Select a location within 300 m (1000 ft) of the KSU. This distance can be
increased to 780 m (2600 ft) with the connection of a Station Auxiliary Power
Supply (SAPS) to the Doorphone.
2. Remove the Doorphone’s face plate.
If the wiring between the Doorphone and the KSU is routed outside a building
such as aerial or buried cable then protection devices must be installed at each
end of the exposed cable for safety and protection. Northern Telecom
recommends the ITW LINX MP1A–90–27 secondary protector for this purpose.