36
Electrical installation
Connection between indoor and outdoor unit
For interconnection cable between indoor unit and outdoor
unit, connect 2, 3, L, N and PE port for outdoor unit on X2
terminal on HMK100 to 2, 3, L, N, and
port on FDCW71/100
respectively according to the below fi gure.
<HMK100 with FDCW71VNX>
TB
X2
L
N
1
2
3
5 x 2,5 mm
2
FDCW71
HMK100
EMERGENCY
RC - HY
RC - HY FDCW
X1
HY FDCW
X2
<HMK100 with FDCW100VNX>
TB
X2
L
N
1
2
3
5 x 2,5 mm
2
FDCW100
HMK100
EMERGENCY
RC - HY
RC - HY FDCW
X1
HY FDCW
X2
Connection between indoor unit and controller
See Connection for RC-HY20/40.
Recommended fuse size for HMK100
The recommended fuse size shown in the following table is
reference value. Choose appropriate size according to local
laws and regulations.
Fuse size
Indoor unit (HMK100) 25A / 400V 3NAC 50Hz
Recommended cable size for HMK100
The recommended fuse size shown in the following table is
reference value. Choose appropriate size according to local
laws and regulations.
Cable size
Power – Indoor unit 5core, 2.5mm
2
(power/communication cable)
Indoor unit – Outdoor unit 5core, 2.5mm
2
(power/communication cable)
Indoor unit – Controller 3core, 1.5mm
2
(power cable)
3core, 0.5mm
2
, LiYY, EKKX or
equivalent (communication cable)
RC-HY20/40
Cable connection is diff erent according to the system structure.
Refer to the connection method according to the indoor unit.
Power supply
HSB100
Connect power cable on X1 terminal as shown below.
RC-HY 20/40 must be installed via an isolator switch with a
minimum breaking gap of 3 mm. Minimum cable area must be
sized according to the fuse rating used.
NL
X1
RC-HY20/40
X1
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