12 Chapter 3 BST Doorphone Installation

For a flush mount:

(into an electrical box embedded in the wall)

Discard the surface mount gasket and bracket.

Slide the flush mount gasket onto the main housing assembly.

Figure 2 Flush mount

Wall

Main housing

 

 

assembly

Flush mount

Faceplate

gasket

 

3Run a standard 3-pair cable from the BCM system to the BST Doorphone location.

Use one pair to connect the ''KSU'' terminals of the BST Doorphone to a reserved station module port on the BCM system.

Strip wires 6 mm (1/4 inch) before inserting them in the terminal block and tightening.

The second pair can be used to connect an optional DOC, leaving a spare pair for a SAPS installation. For more information on DOC, refer to Optional Equipment on page 13.

Figure 3 BST Doorphone TCM connector screw block

KSU SAPS DOC

Note: BST Doorphone connections are polarity insensitive.

4Fasten the BST Doorphone’s faceplate to the main housing assembly.

Note: When the surface mount bracket is used, secure the wiring with a cable tie through the round holes in the rear of the surface mount bracket or electrical box (customer supplied), before fastening the BST Doorphone’s faceplate to the main housing assembly.

NN40010-302

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Nortel Networks NN40010-302 manual KSU Saps DOC