77
PMML0600 rev.0 - 06/2022
6
OP
TIONAL UNIT WIRING F
OR A
CCES
SORIES
ELEC
TRICAL AND C
ONTROL SETTINGS
◆
Water pump 2 Circuit 2
In case of a second circuit installation (second temperature level) the secondary pump is the
circulating pump for the second heating temperature.
26
(N)
M
27
(L)
Water pump II
(Circuit 2)
Pump requirements:
Power supply: 230V AC 50Hz
Maximum running current: 500mA (An auxiliary relay must be
installed in case of high consumption of the water pump).
◆
Electrical heater DHWT output
In those cases where a DHW tank is installed with an electrical heater, the Air to Water heat pump
can activate the electric heater of the tank when the heat pump cannot achieve the required
DHW temperature by itself.
(N)
31
Electrical
Heater
DHWT (EH
4
)
(L)
30
≤ 3kW
!
CAUTION
When using a DHW tank other than those from Hitachi, the maximum connectable heater load is 3
kW (connected to TB2 terminals 30-31).
◆
Output 9
This output has no pre-set configuration. By means of the LCD it can be configured with any of
the options offered inside I/O and sensor menu.
32
33
34
(N)
(L)
HWD-WE-220S(-K)