ENGLISH
Output terminals (Optional output functions)
3 Way valve for Swimming pool (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 ow (water ow for space heating when there is no signal, and water ow for swimming pool when
signal is ON). 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.
(N)
M
(L)
33
(C)
Brown Black
Blue
34 35
3WV / SWP
Output 1
Valve requirements:
• Power supply: 230V AC 50Hz
• Maximum running current: 100mA
! CAUTION
Only 3-way type valve can be connected:
• Spring return 2-wire type 3-way valve: the 3-way valve should be tted when normally working (not power to the valve). Normally diverts to heating
circuit side.
• When using SPST 3-wire valve, HITACHI is not responsible for its operation.
Water pump 3 (Output 2)
When the boiler is congured 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
34
(N)
M
36
(L)
Water pump III
(Output 2)
Auxiliary boiler or heater (Output 3)
The auxiliary boiler or heater can be used when the heat pump cannot achieve the require temperature by itself. A water electric
heater (as accessory) can be used to provide the additional heating required on coldest days of the year.
Auxiliary Heat
(Output 3)
39 40
Solar (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.
39 40
Solar (out)
(Output 4)
ELECTRICAL AND CONTROL SETTINGS
PMML0335A rev.1 - 04/2016
109
To Next Page
Loading...
Need help?
General
