Hitachi YUTAKI S COMBI Series Installation And Operation Manual

52
PMEN0645 rev.0 - 04/2023
6
TERMINALBOARDCONNECTIONS
ELECTRICAL AND CONTROL SETTINGS
◆ Water pump 2 Circuit 2
In case of a second circuit installaon (second temperature level) the secondary pump is the
circulang pump for the second heang temperature.
26
(N)
M
27
(L)
Water pump II
(Circuit 2)
Pump requirements:
• Power supply: 230V AC 50Hz
• Maximum running current: 500mA (An auxiliary
relay must be installed in case of high consumpon
of the water pump).
◆ Electrical heater DHWT output
In those cases where a DHW tank is installed with an electrical heater, the Air to Water heat pump
can acvate the electric heater of the tank when the heat pump cannot achieve the required DHW
temperature by itself.
(N)
31
Electrical Heater
DHWT (EH
4
)
(L)
30
≤ 3kW
! CAUTION
When using a DHW tank other than those from Hitachi, the maximum connectable heater load is
3 kW (connected to TB2 terminals 30-31).
◆ Output 9
32
33
34
(N)
(L)

Hitachi YUTAKI S COMBI Series Specifications

General

Type	Air-to-Water Heat Pump
Energy Efficiency Class (Cooling)	A++
Refrigerant	R32
Operating Temperature Range (Heating)	-20°C to 35°C
Energy Efficiency Class (Heating)	A+++
Integrated DHW Tank	190 liters
Dimensions (Indoor Unit)	Varies by model
Dimensions (Outdoor Unit)	Varies by model
Weight (Indoor Unit)	Varies by model
Weight (Outdoor Unit)	Varies by model
Operating Temperature Range (Cooling)	+10°C to +46°C