10.3 WIRING SIZE AND MINIMUM REQUIREMENTS OF THE PROTECTION DEVICES
!
C A U T I O N
• Check to ensure that the field supplied electrical components (mains power switches, circuit breakers, wires, connectors and wire terminals) have
been properly selected according to the electrical data indicated on this chapter and they comply with national and local codes. If it is necessary,
contact with your local authority in regards to standards, rules, regulations, etc.
• Use a dedicated power circuit for the unit. Do not use a power circuit shared with the outdoor unit or any other appliance.
Use wires which are not lighter than the polychloroprene sheathed flexible cord (code designation 60245 IEC 57).
Model
Power
supply
Operation mode
Power supply cables
Transmitting cables
CB
(A)
ELB
(nº of poles/A/mA)
EN60335-1
EN60335-1
RASM-2VRE
1~ 230V 50Hz
-
2 x 2.50 mm² + GND
2 x 0.75 mm
2
16
2/40/30
With DHW tank heater
2 x 6.0 mm² + GND
32
RASM-3VRE
-
2 x 4.0 mm² + GND
20
With DHW tank heater
2 x 6.0 mm² + GND
32
2/40/30
?
N O T E
The data corresponding to DHW tank heater is calculated in combination with the domestic hot water tank accessory “DHWT-(200/300)S-3.0H2E”.
!
C A U T I O N
• Ensure specifically that there is an Earth Leakage Breaker (ELB) installed for the units (outdoor unit).
• If the installation is already equipped with an Earth Leakage Breaker (ELB), ensure that its rated current is large enough to hold the current of the
units (outdoor unit).
?
N O T E
• Electric fuses can be used instead of magnetic Circuit Breakers (CB). In that case, select fuses with similar rated values as the CB.
• The Earth Leakage Breaker (ELB) mentioned on this manual is also commonly known as Residual Current Device (RCD) or Residual Current
Circuit Breaker (RCCB).
• The Circuit Breakers (CB) are also known as Thermal-Magnetic Circuit Breakers or just Magnetic Circuit Breakers (MCB).
10.4 OPTIONAL UNIT WIRING (ACCESSORIES)
Summary of the terminal board connections
Mark
Part name
Description
TERMINAL BOARD 1 (TB1)
N
1~ 230V 50Hz
Main power supply connection
L1
L2
-
L3
TERMINAL BOARD 2 (TB2)
1
H-LINK commutation
The H-LINK transmission has to be done between the indoor unit and the terminals 1-2 of either
outdoor unit, ATW-RTU or any other central device.
2
3
H-LINK communication for remote
control switch
Terminals for the connection of the YUTAKI unit controller.
4
5
DHW tank’s thermistor
The DHW sensor is used to control the temperature of the domestic hot water tank.
6
Common thermistor
Common terminal for thermistor.
7
Thermistor for water outlet
temperature of second cycle
The sensor is used for the second temperature control and should be positioned after the mixing
valve and the circulation pump.
8
Thermistor for water outlet
temperature after hydraulic separator Water sensor for hydraulic separator, buffer tank or boiler combination.
9
Common thermistor
Common terminal for thermistors.
ELECTRICAL AND CONTROL SETTINGS
PMML0506 rev.2 - 01/2021
16