Mitsubishi Electric PURY-P200 Service Handbook page 104

13. Demand control
Cooling/heating operation can be prohibited (thermo OFF) by an external input to the indoor units.
Note : When DIPSW4-7 are on, STEP DEMAND are possible. NIGHT MODE will become unavailable however.
SW4-7 : OFF (Compressor ON/OFF and NIGHT MODE)
CN3D 1-3P
Compressor ON/OFF
OPEN
SHORT
SW4-7 : ON (STEP DEMAND)
CN3D 1-2P
CN3D 1-3P
OPEN
SHORT
Note the following steps to be taken when using the STEP DEMAND
(Example) When witching from 100% to 50%
Demand control
steps
If the step listed as the wrong example above is taken, thermo may go off.
The percentage of the demand listed in the table above is an approximate value based on the
compressor volume and does not necessarily correspond with the capacity.
[ Example of wiring connection ]
Remote controller board
SW1
SW2
To be
acquired
on site
SW1 : NIGHT MODE or demand command
SW2 : Demand command
X,Y : Relay (contact rating DC1mA)
CN3D 1-2P
ON OPEN
OFF SHORT
OPEN
100% (no demand)
0%
→ NO
(Wrong) 100% 0%
OK
→
(Correct) 100% 75%
Adaptor for external input
(PAC-SC36NA)
Relay circuit
Orange 1
Brown
X
2
X
Red
Y
3
Y
Maximum allowable length of wiring is 10 m.
- 101 -
NIGHT MODE
OFF
ON
SHORT
75%
50%
→
50%
→
50%
Outdoor unit
controller board
CN3D