Fujitsu AJ 126LELDH Series Design & Technical Manual page 978

When connecting to Apply voltage terminals of multiple indoor units, be sure to make a branch
outside the indoor unit using a pull box, etc. as shown in example below.
• CNA02, CNA04: Dry contact terminal
When a power supply is unnecessary at the input device you want to connect, use the Dry contact
terminal (CNA02, CNA04).
* 1
Ch1
* 1
Ch3
1 Select very low current use contacts (usable at DC 12 V, DC 1 mA or less).
* :
2 The wiring is different from Apply voltage terminals. Be sufficiently careful when wiring.
* :
3-1. External input
DC power supply
12 to 24 V
-
Load
resistance
Load
resistance
Connected unit
* 1
Ch2
Connected unit
- (08-10) -
PCB
+
+
1
-
2
-
3
PCB
+
1
-
2
-
3
PCB
+
1
-
2
-
3
PCB
GND
*
CNA01
CNA01
CNA01
1
CNA02
2
3
2
1
CNA04
2
3. Indoor unit