Hitachi RCD-0.8FSN3 Installation And Operation Manual page 38

ELECTRICAL WIRING
•
*
*
Main switch
Main
*
switch Outdoor unit
Earth
wiring
*
Power source cable
Control cable
Pay attention to the
phase of power source
Shielded twist pair cable 0.75mm
when wiring.
This cable does not need any polarity.
voltage to this cable. (Rated voltage:
5V) Connect to both ends of shield
tube to earth.
Model ELB
(n/A/mA)
Combination
*1
Single type
2/40/30
ELB: Earth Leakage Breaker; CB: Circuit Breaker; IU: Indoor unit; OU: Outdoor unit
N O T E
below.
Heat pump system
Outdoor unit
power source
* *
Main
switch
Indoor unit
power source
Main
switch
*
The details of wire, ELB, CB and main switch for
outdoor unit shall be referred to Installation and
Operation Manual of connected outdoor unit.
30 PMML0416A rev.0 - 12/2015 - P5415720
Remote control
switch (Option)
Indoor unit number 1
Remote control switch cable
(Field supplied)
2
2 core twist pair cable 0.75mm
This cable does not need any polarity.
cable. (Rated voltage: 5V)
Connect to both ends of shield tube to earth.
CB
Main switch
(Fuse)
Rated Rated
current (A) current (A)
*2 *2
5 5
Outdoor
unit
Indoor
Indoor
Indoor
unit
unit
unit
Remote control
switch (Option)
Indoor unit number 2 Indoor unit number 3
2
Transition wiring between
Power
source cable
Power supply
*3 *6 < 20m *4
0.75
Outdoor unit
power source
*
Indoor unit
power source
Remote control
switch (Option)
Indoor unit number 4
The details of wire, ELB, CB and main
*
switch for outdoor unit shall be referred
to Installation and Operation Manual of
connected outdoor unit.
2
Wiring size (mm )
OU and IU
Earth
wiring *7
Control
Circuit *5
1.0 0.75 0.75
Heat recovery system
Outdoor
unit
*
Main
CH unit
switch
Indoor Indoor
unit unit
Main
switch
*
The details of wire, ELB, CB and main switch for
outdoor unit shall be referred to Installation and
Operation Manual of connected outdoor unit.
Remote control
switch (Option)
Remote
control switch
cable *8
0.75
Indoor
unit