Hitachi YUTAKI M RASM-3WF2E Installation And Operation Manual page 48

Output terminals (Default output functions)
◆ Mixing valve for Circuit 2
The mixing valve is controlled to maintain the second heating temperature at the second heating
temperature set point. The control system decides how much to open or close the mixing valve to
achieve the desired position of the valve.
24
(C)
Black
Brown
Mixing Valve
(Circuit 2)
◆ 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
Water pump II
(Circuit 2)
◆ Electrical heater DHW Tank output
If the DHW tank is equipped with an electric heater, the air-to-water heat pump can engage it in case the heat pump
alone cannot reach the necessary DHW temperature. This signal is intended for controlling the operation of the DHW
Heater and should NOT be used to connect the main power for the DHW Heater.
30
(L2)
PMEN0657 rev.0 - 02/2024
25 26
(O)
(L2)
M
Blue
27
(L)
31
(L1)
Electrical
Heater signal
≤ 3kW
DHW Tank (EH )
4
Terminal Name
24 C
25 O
26 L2
Valve requirements:
Power supply: 230V AC 60Hz
Maximum running current: 100mA
Pump requirements:
Power supply: 230V AC 60Hz
Maximum running current: 500mA (An auxiliary relay must be
installed in case of high consumption of the water pump).
Actuator requirements:
Power supply: 230V AC 60Hz
Maximum running current: 100mA
Description
Close
Open
Neutral
6
47