25H/SP/DDA/2W - TECHNICAL MANUAL
EN-UK - V.1.2 - 04/01/16
31
VIDEX
25H/SP/DDA/2W
(1 way “2 wire” DDA audio intercom kit)
DIN rail fixed to wall
2x rawl plugs
(4.2mm diameter)
2x expansion type screws
(4mm diameter)
PANEL AND BACK BOX INSTALLATION
The following guide lines should be followed with respect to the installation and care of the VR panel and
accompanying back box. The back box should be adequately secured to the wall to prevent risk of injury.
• To prevent water ingress to the VR120 panel ensure that a good seal between the back box and the face
plate itself is made. The neoprene seal on the face plate will offer this as long as the back box front is flush
with the wall surface. Always ensure the panel is tightened sufficiently to compress the neoprene seal.
• In the event of gaps due to uneven walls we suggest a silicon sealant be used. In the event of water
ingress to the back box we would also suggest drilling 3x4mm holes at the bottom of the back box to
allow any collection of water to escape.
• Always ensure all cable entry points are sufficiently sealed to prevent water ingress
(refer to Fig.5, Fig.6
and Fig.7 respectively)
. All cables should loop down and then back up to the termination connections to
avoid any water travelling along the cable and onto the pcb.
The VR intercom door panel must be earthed to its back box
(with the earth strap provided)
and then the back
box earthed to the buildings earth connection.
Earthing the VR Panel and Back Box
Fig.4D
Fig.4E
