E-
26
Connection of the power supply and communication cable
Wiring work (Continued)
If the supply cable is damaged, it must be replaced by a special cable or assembly available from the
manufacturer or installer.
Circuit Breaker (ELCB, ELB, MCCB etc.) for outdoor and indoor units shall be installed by installers
because they are not sub-parts in the units. But you don't need to install for hydro unit (Built-in ELCB).
Communication cable connection
Power wire connection
N
N
DHW TANK
POWER OUT
L
N
DHW TANK
POWER IN
L
N
MAIN
POWER IN
L
L
N
L
N
L
N
L
L
L1
N
L
L1
3WAY VALVE
(OUT)
2WAY VALVE
(OUT)
BACK-UP
BOILER(OUT)
SOLAR
PUMP(IN)
IN-OUT
COMM.
THERMO STAT1
(IN)
THERMO STAT2
(IN)
N
N
L
N
L
N
L
N
L
N
L1
C1 H1
L
N
C1 H1
F1 F2
C2 H2
L
N
C2 H2
L2
N
L1 L2
F2
F1
L
N
N
L
L1
N
L1 L2
N
L
N
L
N
L
N
L C1 H1
C2 H2
F1
F2
2 wires for communication cable, 1 phase 3 wires(230V ~) for power supply
F1 F2
N
L
N
L
N
L
1 phase 230V~
Earth
Communication cable
between indoor and
outdoor units
Power
cable
Earth cable
(U-Trap)
1 phase
230V~
1 phase
230V~
DHW Tank
Hydro unit
Communication
cable
Circuit breaker
❈
ELCB : Earth leakage circuit breaker
ELB : Earth leakage breaker
MCCB : Molded case circuit breaker
Description
No. of wires
Max. A
Thickness
Supply Scope
Main power
2+ground
32A
4.0mm
2
H05RN-F
or H07RN-F
Field supply (230V~, Input)
Communication
2
6A
0.75mm
2
H05RN-F
or H07RN-F
7Vdc data
NH080PHXEAHydro unit_IM_E 32659-1.indd 26
2010-07-28 ｿﾀﾈﾄ 8:59:35
