Fujitsu Airstage ASUA4TLAV1 - Page 830

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Dry contact terminal ([CNA02], [CNA04])
When a power supply is not required, use the Dry contact terminal ([CNA02], [CNA04]).
1
2
1
2
3
connected unit
P.C. B
GND
Ch 1
Ch 3
*c
*c
*c
*d
Ch 2
CNA02
CNA04
*c: Select very low current use contacts (usable at DC 12 V, DC 1 mA or less).
*d: The wiring is different from Apply voltage terminals. Be sufciently 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
Indoor unitIndoor unit
Indoor unit
Power supply for relay
Input device 2
K1 - K6 : Relay
(Device for DC Current)
P.C. B
P.C. B
P.C. B
K1
K4
K5
K6
K2
K3
CNA02
CNA02
CNA02
NOTE :
● If power is connected to dry contact on indoor units, damage will occur.
- (08 - 10) -
EXTERNAL INPUT & OUTPUT EXTERNAL INPUT & OUTPUT