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9. Special Functions
® Remote control panel
Relay circuit
© Procure locally
© Max. 10 m (33 ft.)
© External input adapter (PAC-SC36NA)
® Orange
® Outdoor unit control board
® Brown
© Relay power supply
@ Red
Fig. 9-1
— ®-
©
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cece eee enw en
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® Remote control panel
Relay circuit
© Procure locally
© Max. 10 m (33 ft.)
© External input adapter (PAC-SC36NA)
® Orange
® Outdoor unit control board
© Brown
© Relay power supply
@® Red
Fig. 9-2
©
©
©
Liele
CNS1
@ 5¢
©
© 41,
®
3
. —_-
°
xX;
Y
°
°
|
©
O—
Li:
Error display lamp
L2:
Compressor operation lamp
X,Y:
Relay (Coil standard of 0.9W or less for DC 12V)
X,Y:
Relay (DC1mA)
Fig. 9-3
©
©
©
O16G
CN3S
X
2
'e
©
O
©
3/6)
>
i
Y
|
©
Fig. 9-4
9.1. Low noise mode (on-site modification) (Fig. 9-1)
By performing the following modification, operation noise of the outdoor unit can be
reduced by about 3-4 dB.
The
low noise mode
will be activated when
a commercially available timer or the
contact input of an ON/OFF
switch is added to the CNDM
connector (option) on the
control board of the outdoor unit.
* The capacity may be insufficient according to the outdoor temperature and condi-
tions, etc.
@® Complete
the circuit as shown
when
using
the external
input adapter (PAC-
SC36NA). (Option)
9.2. Demand function (on-site modification) (Fig. 9-2)
* It is possible to reduce electricity consumption within a range from 0 to 100 per-
cent by performing the following on-site installation.
The demand
function can be enabled
by adding a commercially available input
contact point ON/OFF
switch to the CNDM
connector (the contact point demand
input, option).
@® Incorporate the "Adapter for external
input (PAC-SC36NA)"
into the circuit as
shown in the diagram on the left.
® By switching SW7-1
on the control circuit board for the outdoor unit, the following
power consumption restrictions (compared to rated power) can be set.
SW7-1
Power consumption when SW2
is on
OFF
0% (Forced compressor stop)
ON
50%
9.3. Error and compressor operation monitoring function
(CN51)
® Remote control panel
Relay circuit
© External output adapter (PAC-SA88HA-E)
© Outdoor unit control board
® Lamp power supply
© Procure locally
© Max. 10 m (33 ft.)
© Orange
© Yellow
@ Green
9.4. Auto change over - Operation mode locking func-
tion by external signal (CN3S)
® Remote control panel
@
Orange
® Relay circuit
@®
Brown
© External input adapter (PAC-SC36NA)
@
Red
© Outdoor unit control board
©
Relay power supply
© Procure locally
© Max. 10 m (33 ft.)
ON
OFF
swi
Heating
Cooling
sw2
Validity of SW1
Invalidity of SW1
* Any indoor unit that is operating in a mode different from the one specified by the
external signal will enter the standby mode.
* The setting becomes effective when the outdoor unit is under stop.
* The operation mode specified for the test run has priority over the mode specified
using this function.
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