Installation manual
38GL_M…G / 38YY(S)_M…G
R-410A
GB - 14
Electrical connections
Mod. 38YY2M18G - 38YY2M21G - 38YY2M24G
Terminal box legend
Earth
L Live power supply
N Neutral power supply
R Live connection indoor/outdoor unit
C Neutral connection indoor/outdoor unit
Y Compressor interlocking contact
O Reversing valve control (Heat pump only)
W2 Outdoor fan signal (Heat pump only)
햲 Mains supply connecting cable (field wiring)
햳 Connecting cable, indoor-outdoor units (field wiring)
쐃 Indoor unit
쐇 Outdoor unit
쐋 Main switch
쐏 Time-delay fuse or circuit breaker
(see table V "Electrical data")
햲
10
120
10 100
햳
햲햳
LN
RCYO
W2
RCYO
W2
A B
햳
L
N
쐋
쐏
쐇
쐃
230V ~ 50Hz
LNN OW
2
Y
쐃
LNN OW
2
Y
RCY
A
OW
2
RCY
B
OW
2
WARNING!
The system power supply must always be made through the outdoor
unit.
If the indoor units are provided with heaters, their power supply must
be ensured by indoor sections.
Indoor units which are connected to the heat pump units need the
“Multisplit” configuration by remote controller.
The two heat pump circuits can operate simultaneously only in the
same mode (all circuits operating in the Cooling or Heating mode).
AB