Hitachi YUTAKI S COMBI Series Installation And Operation Manual

47
PMEN0645 rev.0 - 04/2023
6
TERMINALBOARDCONNECTIONS
ELECTRICAL AND CONTROL SETTINGS
6.4.2.3 Input terminals (Default input funcons)
◆ Room thermostat communicaon cables
There are two dierent room thermostat types as accessory
Oponal 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 congured to communicate
with each other. If the Wireless room thermostat or the Intelligent receiver is replaced or an
addional 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
28
29
L
N
AUXILIARY POWER
(ATW‑RTU)
(CENTRAL DEVICE)
Power supply: 230V AC 50Hz
◆ PC-ARFH2E connecon
In cases where another PC‑ARFH2E must be connected as a second thermostat, the connecons
between PC‑ARFH2E and the indoor unit must be done in terminals 3 and 4, as it is shown in the
next picture:
3 4
A B
RCS H‑LINK
(PC‑ARFH2E)
OK
◆ Earth
Earth
5
Earth
12

Hitachi YUTAKI S COMBI Series Specifications

General

Type	Air-to-Water Heat Pump
Energy Efficiency Class (Cooling)	A++
Refrigerant	R32
Operating Temperature Range (Heating)	-20°C to 35°C
Energy Efficiency Class (Heating)	A+++
Integrated DHW Tank	190 liters
Dimensions (Indoor Unit)	Varies by model
Dimensions (Outdoor Unit)	Varies by model
Weight (Indoor Unit)	Varies by model
Weight (Outdoor Unit)	Varies by model
Operating Temperature Range (Cooling)	+10°C to +46°C