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Hitachi YUTAKI Series Service Manual

Hitachi YUTAKI Series
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75
Systemconguration,settingsandcontrolsystem
SMGB0066 rev.0 - 12/2009
Controller pack
Service Manual
4
 

One heating source (electric Heat Pump)

One energy source (electric Heat Pump and electric heater)

Two heating sources (electric Heat Pump and gas/oil Boiler)

Outside Temperature Compensated Control

Domestic Hot Water

The main heating loop controlled by the System Controller.

The extension mixed heating loop controlled by the Extension Controller.

Supply Water Temperature

Return Water Temperature

DHW Temperature

Outside (external) Air Temperature

Mixed Water Temperature

Room Temperature
V
Mixing Valve Position

Fault status

Overall system supply setpoint
S1
Zone 1 supply setpoint
SR1
Zone 1 room temperature setpoint

Zone 2 supply setpoint

DHW setpoint

DHW supply setpoint
 
TheSystemControllercanbeusedforseveraldifferenthydraulicsystemcongurations,includingmono-valentsystems,
mono-energeticsystemswithauxiliaryelectricheater,andbi-valentsystemswithgas/oilboiler.Thehydraulicsystem
congurationshouldbeselectedbysettingtheparameterCONF.





    
CONF 1
Mono-valent System
()
Heat Pump only
Direct Circuit
CONF 2
Mono-Energetic System
()
Heat Pump and Electric Heater
Direct Circuit
CONF 3
Bi-Valent Parallel System
()
Heat Pump and Boiler
Direct Circuit
CONF 4
Bi-Valent Series System
Heat Pump and Boiler
Mixing Circuit
CONF 5
Bi-Valent Parallel System
()
Heat Pump and Boiler
Mixing By-pass Circuit

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Hitachi YUTAKI Series Specifications

General IconGeneral
Heating Capacity5.0 kW - 16.0 kW
Cooling Capacity5.0 kW - 16.0 kW
Energy Efficiency ClassA+++
RefrigerantR32
Operating Temperature Range (Cooling)46°C
Noise Level (Indoor Unit)45 dB
Noise Level (Outdoor Unit)45 dB

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