1 General information
TCGB0070 rev.3 - 04/2012
13
1
For summer time
YUTAKI S system can be also used as cooling system for combination with fan-coils, refreshing floor or both (2nd. tem
-
perature area).
For fan-coils: It is possible to cool the water up to 5ºC .
For refreshing floor: It is possible to cool the water up to temperatures between 16 and 22ºC.
Domestic Hot Water (DHW) production
YUTAKI S also gives the option of sanitary hot water production, allowing the user to benefit from the heat pump’s high
efficiency and achieve hot water up to
70ºC
. This is made possible by a Domestic Hot Water Tank accessory supplied by
HITACHI, which is heated in the heat pump at temperatures below 60ºC, using water pre-heated. An electric heater inte-
grated at the top of the stainless steel tank, increases the temperature in accordance with the user’s needs.
Additional combinations
YUTAKI S system can be used for the following additional combinations:
Solar combination for DHW
YUTAKI S system can be combined with solar panel.
The solar combination will enable to heat up the DHW by means of the sun. The solar combination is designed to transfer
the heat from the solar panels (sun radiation) to the heat exchanger of DHW tank.
Swimming pool operation
For summer session period, YUTAKI S can be used to heat up the swimming pool water temperature up to a value between
24 and 33ºC.
1.1.3 Environment-friendly units
The new HITACHI’s YUTAKI S series uses environmentally-friendly R410A gas refrigerant, and the RoHS and Green Dot
regulations are applied throughout the manufacturing and installation process to reflect HITACHI’s awareness of environ
-
mental respect and commitment.
R410A is totally environmentally-friendly since it does not contain any substances that damage the ozone layer:
ODP (ozone depleting product) =0.
HITACHI’s YUTAKI S series are very efficient and allow significant energy savings compared with conventional systems.
This energy efficiency means less production of CO
2
, which causes the greenhouse effect.