Input Terminals (Default Input Functions) - Hitachi YUTAKI S COMBI Series Installation And Operation Manual

6.4.2.3 Input terminals (Default input functions)
Room thermostat communication cables
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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 indoor unit table board as shown in the next picture:
PC-ARFH2E connection
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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, as it is shown in the
next picture:
Earth
◆
PMEN0645 rev.0 - 04/2023
28
2
1
1 2
AUXILIARY POWER
H‑LINK
(ATW‑RTU)
ATW‑RTU
(CENTRAL DEVICE)
3
A
RCS H‑LINK
(PC‑ARFH2E)
5
Earth
29
L N
Power supply: 230V AC 50Hz
4
B
OK
12
Earth
6
47