Hitachi YUTAKI Series Instruction And Operation Manual page 117

ELECTRICAL AND CONTROL SETTINGS
Input terminals (Optional input functions)
Additionally to the factory-set functions, YUTAKI series allow to other configurations depending on the needs of the customer. All
those inputs are configurable from the "I/O and sensor" menu of Unit controller are the following:
Inputs: Demand ON/OFF, Smart act., Swimming pool input, Solar, Operation mode, DHW boost, Power Meter 1, Demand ON/OFF
C1, Demand ON/FF C2, Forced heating, Forced cooling, Power meter 2, ECO mode C1 and C2, ECO mode C1, ECO mode C2,
Forced OFF, SG 2.
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Room thermostat communication cables
There are two different room thermostat types as accessory
Optional wireless intelligent room thermostat (TB2)
Only for wireless room thermostat accessory: the receiver is connected to the polarity-free terminals1 and 2.
The Wireless room thermostat and the Intelligent receiver are already configured to communicate with each other. If the Wireless
room thermostat or the Intelligent receiver is replaced or an additional second temperature circuit thermostat is added, it is
necessary to rebind them as explained in the manual of the Wireless intelligent room thermostat (PMML0412A).
The Intelligent receiver is connected to the indoor unit table board as shown in the next picture:
Optional wireless ON/OFF room thermostat
The heat pump system has been designed to allow the connection of a remote ON/OFF thermostat to effectively control the home
temperature. Depending on the room temperature, the thermostat will turn the system to ON or OFF.
a. If no thermostat is installed
Terminals 13 and 14 are jumped if there is no ON/OFF receiver connected. When no remote thermostat is installed the
operating condition for the unit (Thermo ON/OFF) will be controlled by the water calculation"control system.
105 PMML0335A rev.1 - 04/2016
2
1
1 2
H-LINK
ATW-RTU-05
Jumper
13 14