External Heater Adapter - Mitsubishi Electric PLFY-P-NCMU-E Data Book

8. OPTIONAL PARTS

8-7. External heater adapter

External heater adapter PAC-YU25HT is a set of special wiring parts for controlling the electric heater* with the air conditioner system.
*The electric heater should be designed and prepared at the site.
A basic connection method is shown as follows:(For details, refer to its Installation Manual.)
(1) Basic wiring
Remote control board
Electric Heater
or panel
heater
For relay X use the specifications given below Operation coil
Rated voltage : 12VDC
Power consumption : 1W 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-YU25HT 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 ~ 1.25 mm
2
Don't extend the cable more than 10 meters (32ft).
(2) Recommended circuit
1-phase power
supply
208V, 230V/60Hz
Item External output cable
Quantity 2
Shape
Wiring details and Installation details should be refrerred to its Installation Manual.
MEE16K008_U
Relay circuit
X
X
Preparations in the field
(16 to 22 AWG)
2
R
S
88H
R
S
88H
Control board
CN24
Connector
(for use with the panel heater)
3
Adapter
Red 1
White 2
Maximum cable length
is 10 m (32ft)
H1
FS1
FS2
H2
FS1
FS1, 2 ----- Thermal fuse
FS2
H1, H2 ----- Electric heater
26H
26H --------- Overheat protection thermostat
88H
88H --------- Electromagnetic contactor
Indoor unit
Outdoor unit
control board
control board
• PUHY, PURY-P-
CN24
TGMU type
Dip switch SW5-2
"ON/OFF"
• PUHY, PURY-P-
THMU/YHMU/
TJMU/YJMU type
Dip switch SW5-10
"ON/OFF"
• PUHY, PURY-P-
TKMU/YKMU,
PUHY, PURY-P-
TLMU/YLMU,
PURY-HP-TKMU/
YKMU type
Dip switch SW4: 932
"ON/OFF"
• PUMY series
Dip switch SW4-4
"ON/OFF"
30