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External circuits - version with Expander
Indoor unit
∗
Ambient temperature sensor
(This sensor must be connected. If not
connected, the output water temperature is
adjusted to the set value of equitherm
regulation for +20°C)
∗ Jumpers J2 and J3 provide permanent power
∗
to relay coil K1, in case the Low Tariff
management is not in operation. When
using the distribution network signal for Low
Tariff management, both jumpers
must be removed.
L
L
T
Fuse
4A
J2**
K1
L
N
L
M
J3**
N
KA3
KM5
KM6
KM4
Description of the
electric
terminals
Indoor unit
XBiv
backup heater control, max. 0,4 A
XLS
low tariff relay supply 230VAC / 100mA
(the external source must be used)
XNS
low tariff signal, input switched by neutral wire,
supply current 100mA
Xutlum
attenuation external input 230VAC / 10mA)
(e.g. program timer, thermostat etc.)
XETSG
ETS signal – earth
XETS+
ETS+ signal
XL,XN,XC
power supply of the indoor unit, communication
with outdoor unit
27
N
L
PE
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