Hitachi YUTAKI RWM-2R1E Installation & Operation Manual page 123

ELECTRICAL AND CONTROL SETTINGS
Output terminals (Optional output functions)

3 Way valve for Swimming pool (Default for Output 1)
YUTAKI units can be used to heat the water of a swimming pool. The signal is used on a 3-way motorized diverting valve and to
provide control of supply water flow for the swimming pool. This output is available when the function is enabled from the Unit
controller.
Using the appropriate wiring, connect the valve cables as shown in the previous picture.
33
(L)
Brown

Water pump 3 (Default for Output 2)
When the boiler is configured with the heat pump or needs an additional pump for the system, a hydraulic separator or buffer tank
must be used to ensure a correct hydraulic balance

Auxiliary boiler or heater (Default for Output 3)
The auxiliary boiler or heater (in case of YUTAKI S80 or M) can be used when the heat pump cannot achieve the require
temperature by itself.

Solar (Default for output 4)
This output is used when solar mode is enabled (from Unit controller) and the temperature in the solar panel rises above the water
temperature in the domestic hot water tank (DHWT). The connection between terminals 39 and 40 shall be closed in order to
activate the dedicated water pump for solar panel combination.
109 PMML0575 rev.2 - 03/2022
34 35
(N) (C)
Blue
M
Black
3WV / SWP
Output 1
34
(N)
39
Auxiliary Heat
39
Valve requirements:
• Power supply: 230V AC 50Hz
• Maximum running current: 100mA
36
(L)
M
Water pump III
(Output 2)
40
Free contact
40
Solar (out)
(Output 4)