Bell -DDA user manual

Summary of the content on the page No. 1

Bell
Wiring for BELL-DDA Systems
System
(Telephones) Ltd
To Additional Telephones
BELL-DDA
Flats
Telephone Models:
801 801S 801PS
Z
500D 500PD
T
S econd
O
Ph one
Door Panel
R
I
2
Z
T
Firs t
I
3
O
Ph one
I
2
R
I
1
I
B
Z
T
O
DDA
Electrical Cupboard
R
Interface
H
These2 Cores
PCB
2
1.0mm CSA
C
Minimum
+
LOCK
-
340/PS4
*
Power Supply
C H R O T
-
+
-
13:44 56
+
61
CO
Speech
NO
Trades
Unit
NC
Button
TS2000-BST
(optional)
Time Clock
203, 204
Lock Release
*A model PS4 Power Supply must be used above6 wa

Summary of the content on the page No. 2

Installation of Door Entry Systems Important Safety Information The Power Supply Unit must be placed ina protected indoor environment such as an electrical cupboard, close toa 240VAC electrical supply and located close to the entrance. It must be wall-mounted onto plasterboard,wood ora similar non-conductive material. Connections to the 240V AC mains supply must be carried out bya qualified electrician or similar competent person, and made in accordance with accepted safety practices. A two- pol