ENGLISH
YUTAKI S
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:
1
2
1
2
H-LINK
ATW-RTU
PC-ARFH2E connection
In cases where another PC-ARFH2E must be connected as a second thermostat, the connections between PC-ARFH2E and the indoor
unit must be done in terminals 3 and 4 and the connection of the power supply in terminals 28-29, as it is shown in the next picture:
3
4
A
B
RCS H-LINK
(PC-ARFH2E)
OK
DHWT Thermistor (TDHWT)
For those cases in which a tank is installed as accessory, a thermistor must be installed to control the water temperature. The
connection for this thermistor must be done between terminals 5 and 6 of the TB2.
6
5
T
DHWT
DHWT
Water outlet thermistor for circuit 2 (TWO2)
When the installation is configured with a second circuit the thermistor for the water outlet temperature have to be connected
between terminals 6 and 7 of the terminal board 2.
7
6
T
wo2
Circuit 2
ELECTRICAL AND CONTROL SETTINGS
PMML0575 rev.1 - 09/2021
37
