Fujitsu AIRSTAGE J-II Design & Technical Manual page 706

Dry contact terminal ([CNA02], [CNA04])
z „
When a power supply is unnecessary at the input device you want to connect, use the Dry
contact terminal ([CNA02], [CNA04]).
*c *c
Ch 1 Ch 2
*c
Ch 3
connected unit
*c: Select very low current use contacts (usable at DC12V, DC1mA or less).
*d: The wiring is different from Apply voltage terminals. Be sufficiently careful when wiring.
When connected to Dry contact terminals of multiple indoor units with a connected unit,
insulate each indoor unit with relay, etc. as shown on below example.
Input device 1
Input device 2
NOTE :
● When connected to multiple indoor units directly, it will cause breakdown.
P.C.B
K1
K4
P.C.B
K2
K5
P.C.B
K3
K6
K1 - K6 : Relay
(Device for DC Current)
- (08 - 10) -
P.C.B
1
CNA02
2
3
GND
*d
1
CNA04
2
CNA02
CNA02
CNA02