MXZ-SM48NAMHZ Service Manual

7
OCH789
(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)
Recommended circuit
CN24
CN22
X
+
X
Remote control Board Relay circuit
Adapter
Indoor unit
control board
Outdoor unit
control board
Electric Heater power source
Electric
Heater
Red 1
White 2
Dip switch
SW5-4 "ON"
Preparations in the field
Maximum cable length
is 10 m (32ft)
Red 1
Red 2
YellowGreen
FS1
FS2
FS1
FS2
R
S
R
S
CN24
H2
88H
H1
88H
26H
88H
1-phase power
supply
208V, 230V/60Hz
Control board
FS1, 2 ----- Thermal fuse
H1, H2 ----- Heater
26H --------- Overheat protection
thermostat
88H --------- Electromagnetic contactor
Wiring diagram
For relay X use the specifications given below operation coil
Rated voltage: 12 V DC
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
2
to 1.25 mm
2
(AWG22 to AWG16)
Do not extend the cable more than 10 meters (32 ft).