Hitachi YUTAKI M Bedienungsanleitung Seite 43

Power
Model
supply
RASM‑2VR2E
~ 230V
50Hz
RASM‑3VR2E
MC: Maximum current; CB: Circuit breaker; ELB: Earth leakage breaker
6.3 Optional unit wiring for accessories
6.3.1 Summary of the terminal board connections
Mark Part name
N
~ 230V 50Hz
L1
L2
‑
L3
1
H‑LINK communication
2
3
H‑LINK communication for
remote control switch
4
5 DHW tank's thermistor
6 Common thermistor
Thermistor for water outlet
7
temperature of second cycle
Thermistor for water outlet
8
temperature of third cycle
9 Common thermistor
Thermistor for swimming pool
10
water temperature
Thermistor for second ambient
11
temperature
12 Earth
13 Common line
14 Input 1 (Demand ON/OFF) (*)
PMEN0647 rev.0 - 11/2023
Applicable voltage
U max (V) U min (V)
253 207
TERMINAL BOARD 1 (TB1)
Main power supply connection
TERMINAL BOARD 2 (TB2)
The H‑LINK transmission has to be done between the ATW‑RTU or any
other central device.
Terminals for the connection of the YUTAKI unit controller.
The DHW sensor is used to control the temperature of the domestic hot
water tank.
Common terminal for thermistor.
The sensor is used for the second temperature control and should be
positioned after the mixing valve and the circulation pump.
The sensor is used for the third temperature control and should
be positioned after the hydraulic separator, buffer tank or boiler
combination.
Common terminal for thermistors.
The sensor is used for the swimming pool temperature control and should
be positioned inside plate heat exchanger of the swimming pool.
The sensor is used for the second ambient temperature control and it
should be positioned outdoors.
Earth connection for the 3 way valve and water pump.
Terminal Line common for input 1 and input 2.
The air to water heat pump system has been designed to allow the
connection of a remote thermostat to effectively control your home's
temperature. Depending on the room temperature, the thermostat will
turn the air to water heat pump system ON and OFF.
MC CB
(A) (A)
11 16
14 20
Description
ELB
(nº of poles/A/
mA)
2/40/30
2/40/30
6
35