Input Terminals (Default Input Functions) - Hitachi YUTAKI M R32 Series Installation & Operation Manual

6.1.2 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
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.
The Intelligent receiver is connected to the indoor unit 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)VRE). 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)VRE) of the Terminal board 2 and connect the RF
receiver as shown in the following picture.
PMML0600 rev.0 - 06/2022
2
1
1
2
H-LINK
ATW-RTU
28
29
L N
AUXILIARY POWER
(ATW-RTU)
(CENTRAL DEVICE)
6
70