Hitachi YUTAKI S80 Series - Flexible Domestic Hot Water (DHW) Control

2. Features and benets
TCGB0075 rev.0 - 11/2012
47
2
2.6.2 Flexible Domestic Hot Water (DHW) control
An optional Domestic Hot Water Tank (DHWT) accessory can be connected to the air to water heat pump in order to
provide the Domestic Hot Water operation. The DHWT is available in 2 models stainless steel, with an integrated electric
heater of 2.0 kW.
N O T E
For more details, please refer to the Domestic hot water tank Installation and Operation manual.
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Domestic hot water emergency operation
In case of outdoor unit or indoor unit malfunction, the domestic hot water tank can be heated by an internal domestic hot
water tank heater activating an specic switch placed beside indoor unit manometer. In this case, the temperature setting
is performed by the heater’s thermostat.
Switch for DHW
emergency
operation
N O T E
Refer to the Electrical data for the details of CB and ELB.
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Space heating priority mode
The Domestic Hot Water (DHW) operation has priority over all other operation modes unless otherwise noted.
It should be taken into account the following consideration:
- When DHW requires the heat pump operation, no other modes can require heat pump operation.