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Refrigerant Piping Length Between Indoor Unit And Outdoor Unit - Hitachi YUTAKI S COMBI Series Handleiding

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This symbol displayed on the unit indicates that
there is relevant information included in the
Operation Manual and/or Installation Manual.
For more information, see the Installation and
Operation Manual.
Make sure that unit installation and refrigerant piping
installation comply with applicable legislation in each
country. Also, in Europe, EN378 must be complied, as it is
the applicable standard.
4.2 Refrigerant piping
4.2.1 Refrigerant piping length between indoor
unit and outdoor unit
The unit installation and refrigerant piping should comply
with the relevant local and national regulations for the
designed refrigerant.
Due to R32 refrigerant and depending on final refrigerant
charge amount, a minimum floor area for installation
must be considered.
• If total refrigerant charge amount <1.84kg, there are
no additional minimum floor area requirements.
• If total refrigerant charge amount ≥1.84kg, there are
additional minimum floor area requirements to be
checked.
5. ELECTRICAL AND CONTROL SETTINGS
5.1 General check
• Make sure that the following conditions related to
power supply installation are satisfied:
9 The power capacity of the electrical installation
is large enough to support the power demand of
the YUTAKI system (outdoor unit + indoor unit +
DHW tank).
9 The power supply voltage is within ±10% of the
rated voltage.
9 The impedance of the power supply line is low
enough to avoid any voltage drop of more than
15% of the rated voltage.
• Following the Council Directive 2014/30/EU, relating
to electromagnetic compatibility, the table below
indicates the Maximum permitted system impedance
at the interface point of the user's supply, in
Z
max
accordance with EN 61000-3-11.
Power
Model
supply
~ 230V
50Hz
3N~
400V
50Hz
EN
PMML0668 rev.0 - 09/2024 - 1000017438
Operation mode
Without electric heaters
With electric heater
With DHW tank heater
With electric and DHW
tank heaters
Without electric heaters
With electric heater
With DHW tank heater
With electric and DHW
tank heaters
Power
Model
supply
~ 230V
50Hz
3N~
400V
50Hz
The status of Harmonics for each model, regarding
compliance with EN 61000-3-12 and
follows:
EN 61000-3-2
EN 61000-3-12
• Check to ensure that existing installation (mains power
switches, circuit breakers, wires, connectors and wire
terminals) already complies with the national and local
regulations.
• The use of the DHW tank heater is disabled as factory
(Ω)
Z
setting. If it is desired to enable the DHW tank heater
max
operation during normal indoor unit operation, adjust
-
the DSW4 pin 3 of the PCB1 to the ON position and
use the adequate protections.
-
-
0.29
-
-
-
-
Operation mode
Without electric heaters
With electric heater
With DHW tank heater
With electric and DHW
tank heaters
Without electric heaters
With electric heater
With DHW tank heater
With electric and DHW
tank heaters
EN
61000-3-2, is as
Models
RWD-1.5RW3E-220S(-K) (1~)(3N~)
RWD-2.0RW3E-220S(-K)(6H) (1~)(3N~)
RWD-2.5RW3E-220S(-K)(6H) (1~)(3N~)
RWD-3.0RW3E-220S(-K)(6H) (1~)(3N~)
RWD-3.5RW3E-220S(-K) (1~)
RWD-4.0RW3E-220S(-K) (1~)
RWD-5.0RW3E-220S(-K) (1~)
RWD-6.0RW3E-220S(-K) (1~)
RWD-3.5RW3E-220S(-K) (3N~)
RWD-4.0RW3E-220S(-K) (3N~)
RWD-5.0RW3E-220S(-K) (3N~)
RWD-6.0RW3E-220S(-K) (3N~)
(Ω)
Z
max
-
0.28
-
0.19
-
-
-
-
4

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