Hitachi YUTAKI M Bedienungsanleitung Seite 45

controller, some other inputs and outputs functions can be configured and used. Please, refer to the
Service Manual for detailed information.
6.3.2 Input terminals (Default input functions)
◆ Room thermostat communication cables
There are two different room thermostat types as accessory
Optional wireless intelligent room thermostat (TB2) ATW-RTU
Only for wireless room thermostat accessory: the receiver is connected to the polarity‑free
terminals 1 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.
The Intelligent receiver is connected to the table board as shown in the next picture:
Optional wireless ON/OFF room thermostat ATW-RTU-04
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 (Only applicable
for YUTAKI M RASM‑(2/3)VR2E. When no remote thermostat is installed the operating
condition for the unit (Thermo‑ON/OFF) will be controlled by the water calculation control
system.
b. Installation of the ATW‑RTU‑04
In case of setting an installation with 2 circuits (circuit 1 and circuit 2) and the same demand
ON/OFF is used for both of them, remove the jumper between terminals 13 and 14 (Only
applicable for YUTAKI M RASM‑(2/3)VR2E of the Terminal board 2 and connect the RF
receiver as shown in the following picture.
PMEN0647 rev.0 - 11/2023
2
1
1
2
H‑LINK
ATW‑RTU
28
29
L N
AUXILIARY POWER
(ATW‑RTU)
(CENTRAL DEVICE)
6
37