Hitachi YUTAKI Series Installation And Operation Manual page 74

ELECTRICAL AND CONTROL SETTINGS

3 Way valve for DHW tank output
YUTAKI units can be used to heat DHW. The signal is used on a 3-way motorized diverting valve and to provide control of supply
water flow (water flow for space heating when there is no signal, and water flow for DHW when signal is ON)
32
(C)
Black
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
64 PMML0510 rev.1 - 10/2019
33 34
(L)
Brown
M
Blue
3WV / DHW
DHWT
34 35
(N) (C)
Blue
M
Black
3WV / SWP
Output 1
34
(N)
Valve requirements:
• Power supply: 230V AC 50Hz
• Maximum running current: 100mA
Valve requirements:
• Power supply: 230V AC 50Hz
• Maximum running current: 100mA
36
(L)
M
Water pump III
(Output 2)