Hitachi YUTAKI S COMBI Series Installation And Operation Manual page 62

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
34
(L)
Blue
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 can be used when the heat pump cannot achieve the require
temperature by itself.
PMEN0645 rev.0 - 04/2023
35
(C)
(N)
M
Black
3WV / SWP
Output 1
34
(N)
M
37
Auxiliary
Heat
Valve requirements:
• Power supply: 230V AC 50Hz
• Maximum running current: 100mA
36
(L)
Water pump III
(Output 2)
38
Free contact
6
53