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Idiomas disponibles
8. Special Functions
®
®
®
®
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Fig. 8-1
L_ _ _z:______,
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CNL_2_
®
@ Circuit diagram
example (low noise mode)
@ Outdoor
unit control board
® On-site arrangement
® Max. 10 m, 33 ff
© External input adapter (PAC-SC36NA)
8.1. Low noise mode (on-site modification) (Fig. 8-1)
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)
Q SW1 ON: Low noise mode
SWl OFF: Normal operation
®
®
®
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Fig. 8-2
®
@ Circuit diagram example (Demand function)
© External input adapter (PAC-SC36NA)
® On-site arrangement
@ Outdoor unit control board
®Max.
10 m, 33 ft
8.2. Demand function
(on-site modification)
(Fig. 8-2)
By performing
the following
modification,
energy consumption
can be reduced to 0
-100%
of the normal consumption.
The demand function will be activated when a commercially
available
timer or the
contact input of an ONtOFF
switch is added to the CNDM connector
(option) on the
control board of the outdoor unit.
(_ Complete the circuit as shown when using the external input adapter
(PAC-SC36NA).
(Option)
Q By setting SW7-1 and SW7-2 on the control board of the outdoor unit, the ener-
gy consumption
(compared
to the normal consumption)
can be limited as shown
below.
SW7-1
SW7-2
Energy consumption
(SW2 ON)
OFF
OFF
0% (Stop)
ON
OFF
50%
OFF
ON
75%
8.3. Refrigerant collecting (pump down)
Perform the following
procedures
to collect the refrigerant
when moving the indoor
unit or the outdoor unit.
@} Supply power (circuit breaker).
* When power is supplied, make sure that "CENTRALLY
CONTROLLED"
is not
displayed
on the remote
controller.
If "CENTRALLY
CONTROLLED"
is dis-
played, the refrigerant collecting
(pump down) cannot be completed
normally.
® After the gas stop valve is closed, set the SWP switch on the control board of the
outdoor unit to ON. The compressor
(outdoor
unit) and ventilators
(indoor and
outdoor units) start operating
and refrigerant
collecting operation
begins.
LED1
and LED2 on the control board of the outdoor unit are lit.
* Only set the SWP switch (push-button
type) to ON if the unit is stopped. How-
ever, even if the unit is stopped
and the SWP switch
is set to ON less than
three minutes after the compressor
stops, the refrigerant
collecting
operation
cannot be performed.
Wait until compressor
has been stopped for three min-
utes and then set the SWP switch to ON again.
@ Because
the unit automatically
stops in about two to three
minutes
after the
refrigerant
collecting operation (LED1 and LED2 are lit), be sure to quickly close
the gas stop valve. When LED1 and LED2 are lit and the outdoor unit is stopped,
open the liquid stop valve completely,
and then repeat step 2 after three minutes
have passed.
* If the refrigerant
collecting
operation has been completed
normally
(LED1 and
LED2 are lit), the unit will remain stopped until the power supply is turned off.
@ Turn off the power supply (circuit breaker).
9. System control (Fig. 9-1)
®SW1
-3~6
oFFON
3
4
5
6
®SWl
-3~6
oFFON
3
4
5
6
@SWl
-3~6
oFFON
3
4
5
6
TB1 ___
TB1 [
D1
_)
E3®E3®$
@ Outdoor unit
® Indoor unit
© Master remote controller
Subordinate
remote controller
® Standard
1:1 (Refrigerant
address = 00)
@ Simultaneous twin (Refrigerant address = 01)
@ Simultaneous twin (Refrigerant address = 02)
Ta51_
J
Fig. 9-1
*
Set the refrigerant
address using the DIP switch of the outdoor unit.
(_ Wiring from the Remote Control
This wire is connected
to TB5 (terminal board for remote controller)
of the indoor
unit (non-polar).
Q When a Different Refrigerant
System Grouping
is Used.
Up to 16 refrigerant
systems can be controlled as one group using the slim MA
remote controller.
Note:
In single refrigerant
system(twin),
there is no need of wiring®.
sw1
Function table
<SWI>
Function
1 Compulsory
defrosting
2 Error history
SWl
clear
function
3 Refrigerant
settings
4 system
ad-
5 dress setting
6
Operation
according to switch setting
ON
OFF
Start
Normal
Clear
Normal
Settings
for outdoor
unit addresses
0to
15
10
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