UTC Fire and Security DET-TRONICS 95-8533 Instructions Manual page 47

Two-Wire Smoke Detectors
The EDIO supports 2-wire devices from Kidde-Fenwal
and Apollo. Figure 3-31 shows the wiring for Apollo
detectors connected to EDIO Channel 1 through
terminals 1 and 2.
Figure 3-32 shows the typical wiring for Kidde-Fenwal
detectors connected to the EDIO through Channel 1
using terminals 1 and 2.
The EDIO supports either brand of detection products,
however, mixing brands is not supported on either a
single channel or module.
IMPORTANT
No more than 15 devices can be connected per
channel.
+ SUPPLY A
IN–/OUT+ B
COMMON C
+ SUPPLY A
IN–/OUT+ B
COMMON C
Unsupervised Output
Connect external system wiring to the appropriate
terminals on the terminal block. See Figure 3-33.
No connection should be made to "+ Supply"
terminal.
7.1
IN
1
L1
-R
L1
OUT
2
3 UNUSED
1
1 2
7
2
3
UNUSED
IN
L1
L2 L1
OUT
Figure 3-31—Apollo 2-Wire Devices
1 2
3
6 7
Figure 3-32—Kidde-Fenwal 2-Wire Devices
COMMON C
IN– / OUT+ B
+ SUPPLY A
A2321
Figure 3-33—Unsupervised Output Configuration
3-29
IN
-R L1
EOL
RESISTOR
5 K Ω
L2 L1
OUT
1
EOL
RESISTOR
3
5 K Ω
6 7
3
2
1 NOTE: SHUNT/FLYBACK DIODES DO NOT NEED
TO BE INSTALLED ON THE FIELD DEVICE.
CIRCUIT PROTECTION IS PROVIDED
WITHIN THE EDIO MODULE.
-R
L2
A2283
2
3
6
A2284
95-8533