Recommended Circuit - Mitsubishi PUMY-P60NKMU Technical & Service Manual

(6) Locally procured wiring
A basic connection method is shown.
(i.e. interlocked operation with the electric heater with the fan speed setting on high)
Remote control Board
Electric
Heater
Preparations in the field
For relay X use the specifications given below operation coil
Rated voltage : 12VDC
Power consumption : 0.9W or less
*Use the diode that is recommended by the relay manufacturer at both ends of the relay coil.
The length of the electrical wiring for the PAC-YU24HT is 2 meters (6-1/2 ft)
To extend this length, use sheathed 2-core cable.
Control cable type : CVV, CVS, CPEV or equivalent.
Cable size : 0.5 mm
Do not extend the cable more than 10 meters (32ft).

Recommended circuit

Wiring diagram
OCH502C
Relay circuit
X
X
+
to 1.25 mm (AWG22 to AWG16)
2 2
R
1-phase power
S
supply
208V, 230V/60Hz
R
S
Control board
CN24
Adapter control board
Red 1
White 2
Red 1
Red 2
Maximum cable length
is 10 m (32ft)
88H
H1
FS1
FS2
88H H2
FS1
FS2
26H
88H
7
Indoor unit
control board
Dip switch
SW5-4 "ON"
CN24
CN22
FS1, 2 ----- Thermal fuse
H1, H2 ----- Heater
26H --------- Overheat protection
thermostat
88H --------- Electromagnetic contactor
Outdoor unit