Hitachi YUTAKI S80 Series - Page 45

2. Features and benets
TCGB0075 rev.0 - 11/2012
45
2
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Maximum/minimum water temperature setting for space heating protection by Installer mode
• Heating circuit minimum/maximum temperature limits selection by installer: The installer will limit the space heating
temperature set-point in order to prevent excessively high or low temperatures.
Outdoor ambient temperature (ºC)
Water outlet temperature
set point ºC
Tmaxh
n
Tminh
n
Minimum water temp
Maximum water temp
Water temperature setting example
Outdoor ambient temperature(ºC)
Water outlet temperature
set-point (ºC)
Minimum water temperature
Maximum water temperature
Example of water temperature setting
N O T E
• Very useful when water calculation type selected is by gradient
• Temperaturelimitshavepriorityagainstallothertemperaturesetpointmodications,andminimum/maximum
water temperature is limited by air to water heat pump’s working range.
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Room thermostat units
There are available two types of room thermostat units:
• ON/OFF room thermostat unit (accessory): When the room temperature setting is higher than the room actual tempe-
rature, it is provided a thermo-ON signal to the system. Once reached the room temperature setting, it will be provi-
ded a thermo-OFF signal to the system.
• Intelligent room thermostat unit (accessory) with extension room thermostat (accessory) for the second circuit: Based
on Outside Temperature Compensation (OTC). Water outlet target temperature is automatically recalculated taking
into account the outdoor ambient temperature and the difference between the room setting temperature and the room
actual temperature.