Power Supply Working Range; R32 Temperature Working Range; Space Heating - Hitachi YUTAKI S Series Installation And Operation Manual

4.1

Power supply working range

Nominal power supply
◆
• Single phase: ~ 230V 50Hz
• Three phase: 3N~ 400V 50Hz
Operating voltage
◆
Between 90 and 110% of the nominal voltage.
Voltage imbalance for nominal power supply 3N~ 400V 50Hz
◆
Up to 3% of each phase, measured at the main terminal of the outdoor unit.
Starting voltage
◆
Always higher than 85% of the nominal voltage.
4.2

R32 Temperature working range

MODEL
Water temperature
Indoor ambient temperature
4.2.1 Space heating
60
50
45
40
30
20
10
0
-30 -25 -20 -10
Ambient temperature (°C)
PMEN0643 rev.0 - 04/2023
°C
-5 0 10 20
1.5HP 2.0HP
Refer to the graphics for each case
Continuous working range
Starting heat pump + back up heater
Starting only back-up heater
operation
Marked areas with
available if back-up heater is enabled.
25 30
2.5HP 3.0HP
5~30
and only
4
13