Silent Mode - Mitsubishi Electric M Series Installation Manual

SILENT MODE

- MR.SLIM - POWER LIMITATION
‹Circuit for activation of low noise operation›
Connection mode
A
F
SW1
B
A Circuit diagram example (low noise mode)
B On-site arrangement
C External input adapter (PAC-SC36NA-E)
X: Relay
A
X
Y
F
SW2 SW3
B
A Circuit diagram example (Demand function)
B On-site arrangement
X, Y: Relay
Outdoor unit
PC board
3
2
1
X
X
D Outdoor unit control board
E Max. 10 m
F Power supply for relay
X
Y
C External input adapter (PAC-SC36NA-E)
D Outdoor unit control board
E Max. 10 m
F Power supply for relay
Red
Brown
Orange
C
CNDM
Orange
Brown
Red
E
C
D
Orange
Brown
Red
E
MITSUBISHI ELECTRIC / FUNCTION AND SETTINGS
PAC-SC36NA
Max 10 m
Low noise mode (on-site modification)
D
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 commer-
1
cially 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.
3
• The ability varies according to the outdoor temperature
and conditions, etc.
1 Complete the circuit as shown when using the external
input adapter (PAC-SC36NA-E). (Option)
2 SW7-1 (Outdoor unit control board): OFF
3 SW1 ON: Low noise mode
SW1 OFF: Normal operation
Demand function (on-site modification)
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 commer-
cially available timer or the contact input of an ON/OFF
1 switch is added to the CNDM connector (option) on the
control board of the outdoor unit.
1 Complete the circuit as shown when using the external
input adapter
3
(PAC-SC36NA-E). (Option)
2 By setting SW7-1 on the control board of the outdoor
unit, the energy consumption (compared to the normal
consumption) can be limited as shown below.
SW7-1 SW2 SW3
Demand function ON
Energy
consumption
OFF OFF 100%
ON OFF 75%
ON ON 50%
OFF ON 0% (Stop)
115