35
8-4. Specifications of optional connectors on the Air to Air
Heat Exchanger with DX Coil Unit board
Function
Connector
No.
Pin
No.
Specification
Note
External input
No-voltage contact a
CN705
1
0 V (COM)
2
Remote controller
prohibition input
Remote controller prohibition input (ON: Prohibited, OFF:
Allowed)
3
Ventilation fan speed
change input
Ventilation fan speed change input (ON: LOW, OFF: HIGH)
4
Use prohibition
Do not use
5
Start / Stop input
Start / Stop input (pulse / static input changed by No. 1 of
DIP SW701, OFF: Static (default), ON: Pulse)
External input
DC12 V, 24 V
CN706
1
DC12 V (COM)
2
Start / Stop input
Start / Stop input (pulse / static input changed by No. 1 of
DIP SW701, OFF: Static (default), ON: Pulse)
HA
CN61
1
Start / Stop input
Start / Stop input of HA (pulse / static input changed by No.
2 of DIP SW701, OFF: Pulse (default), ON: Static)
* The setting is opposite to that of the external input.
2
0 V (COM)
3
Remote controller
prohibition input
Remote controller prohibition input (ON: Prohibited, OFF:
Allowed)
4
Operation output
ON during operation (answer back of HA)
5
DC12 V (COM)
6
Alarm output
ON during alarm
FILTER
Optional abnormal /
humidifier setting
CN70
1
Switching optional abnormal input (protective action display
for a device attached externally) / humidifier setting
Humidifier setting by default
* Use the remote controller to set optional abnormal input
(DN[2A] = 0002
ĺ
0001)
2
0 V
CHK
Operation check
CN71
1
Check the indoor operation (Performs the indoor fan "H"
and drain pump ON, not communications with the outdoor
and remote controller)
2
0 V
DISP
Exhibition mode
CN72
1
Enable communications using the indoor unit and remote
controller only
2
0 V
EXCT
Demand
CN73
1
Demand input
Indoor unit forced thermo OFF
2
0 V
Summary of Contents for MD-VNK802HEXE
Page 120: ...118 11Owner s Manual Excerpt ...
Page 137: ...135 12Installation Manual Excerpt ...
