Hitachi YUTAKI S Series Installation And Operation Manual

29
PMEN0643 rev.0 - 04/2023
5
SPACE HEATING AND DHW
REFRIGERANT AND WATER PIPING
✓ Pressure protecon
✓ Non-return funcon
✓ Shut-o valve
✓ Filling
✓ Draining
 NOTE
The discharge pipe should always be open to the atmosphere, free of frost and in connuous slope
to the down side in case that water leakage exists.
5.4.5.2 Addional hydraulic oponal elements (For DHW)
In case of a recirculaon circuit for the DHW circuit:
DHW TANK
Nature No. Part name
Piping connecons
1 Water inlet (DHW)
2 Water outlet (DHW)
Accessories 3
Water check valve
(ATW-WCV-01 accessory)
Field supplied
4 Water pump
5 Shut-o valve
• 1 Recirculaon water pump (eld supplied): this water pump (3) will help to correctly
recirculate the hot water to the DHW inlet.
• 1 Water check valve (ATW-WCV-01 accessory): this Hitachi accessory (3) is connected aer the
recirculaon water pump (4) in order to ensure the non-return of water.
• 2 Shut-o valves (eld supplied) (5): one before the recirculaon water pump (4) and other
aer the water check valve accessory (3).

Hitachi YUTAKI S Series Specifications

General

Type	Air-to-Water Heat Pump
Refrigerant	R410A
Cooling Capacity	2.5 - 16 kW
Operating Temperature Range (Cooling)	46°C
Indoor Unit Dimensions	Varies by model
Outdoor Unit Dimensions	Varies by model
Noise Level	Varies by model