4.3.8 Surface mounting using the back box
and surface mount cover
1
Open the knockout holes of the back box and pass
cables through them.
R
See the instructions in "Back box dimensions and
preparation (Page 28)".
2
Use the hex wrench to secure the back box in 4 areas
using 4 brackets and 4 hex screws (
A
), and then
install the back box to the wall.
A
A
A
3
Attach the upper and lower plates (
A
) using 4 screws
(
B
).
A
B
A
B
4
Set the DIP switches.
R
See page 40 for information about lobby station
DIP switches.
R
See page 41 for information about the
distributor DIP switches when using bus wiring.
5
Connect the wires and cables to the lobby station.
R
See "4.6.2 Wire type and maximum wire length
(Page 39)".
6
Attach the lobby station to the back box, and then use
the hexalobular wrench to secure the lobby station to
the back box using 1 hexalobular screw (
A
).
R
Do not cover the water drain holes (
B
).
B
A
7
Attach the surface mount cover (
A
) to the back box.
a.
Use the hex wrench to secure the surface mount
cover in 4 areas using 4 hex screws (
B
).
b.
Remove the tape from both sides of the dustproof
sheet (
C
), and then affix the dustproof sheet to
the bottom side of the back box. Affix the
dustproof sheet so that it aligns with the wall (
D
).
A
B
B
B
B
C
D
D
30
4. Installation