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When connecting to Dry contact terminals of multiple indoor units, insulate each indoor unit with
relay, etc. as shown in example below.
CAUTION
Do not connect to multiple indoor units directly since it will cause breakdown.
¢ Input signal type
The input signal type can be selected by switching the DIP switch on the indoor unit PCB.
• DIP switch SET2-2: Edge or Pulse selection of external input
SET2-2
Off
On
Edge
NOTE: Input signal type of Ch3 (Forced thermostat off) is only Edge.
3-1. External input
K1
K2
K3
Input device 1
Input device 2
K1 to K6: Relay
(Device for DC current)
External input select
Edge
Pulse
- (08-11) -
PCB
K4
CNA02
PCB
K5
CNA02
PCB
K6
CNA02
Factory setting
The width of pulse must be
longer than 200 msec.
Pulse
♦
3. Indoor unit
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