Mitsubishi Electric Mr.Slim PUZ-HA30NHA2 Service Manual page 59

Special function
(a) Low-level sound priority mode (Local wiring)
Unit enters into Low-level sound priority mode by external signal input setting.
Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual.
Adding a commercial timer or on-off switch
input located on the outdoor controller board enables to control compressor operation frequency.
W The performance depends on the load of conditioned outdoor temperature.
How to wire
<Low-level sound priority mode circuit>
Insulate this point securely as
this is not used.
Purchased locally
Relay
supply
~
SW1
X
SW1 : Switch
X : Relay (Contact spec. : DC1mA)
1) Make the circuit as shown above with adapter for external signal input(PAC-SC36NA).
2) Turn SW1 to on for Low-level sound priority mode.
Turn SW1 to off to release Low-level sound priority mode and normal operation.
(b) On demand control (Local wiring)
Demand control is available by external input. In this mode, power consumption is decreased within the range of usual
0~100%.
How to wire
Basically, the wiring is same with (a).
Connect an SW 1 which is procured locally between Orange and Red(1 and 3) of the adapter for external signal
input(PAC-SC36NA), and insulate the tip of the brown lead wire.
It is possible to set it to the following power consumption (compared with ratings) by setting the SW7-1, 2.
Power consumption
SW7-1 SW7-2
OFF OFF 0% (Operation stop)
ON OFF
OFF ON
contactor
X
Max. 10 m[33ft] including local wiring
(SW1 on)
50%
75%
setting to the CNDM connector which is optional
Adapter for external
signal input
Outdoor unit
(PAC-SC36NA)
controller board
Red 3
Brown 2
Orange 1
CNDM
59
contactor for demand