Hitachi YUTAKI RWM-2R1E Installation & Operation Manual page 229

UNIT CONTROLLER (PC-ARFH2E)
DHW Heater:
Only available when DHW heater is activated
(DSW4 pin 3 ON).
• Waiting time: Enable or disable waiting time
for DHW heater.
• Electrical Heater waiting time: To select
the delay time since the moment HP has
started in order to start the electric heater.
In case Waiting time is set to 0 (default),
electric heater is never started due to
waiting time. In case waiting time has a
value different than 0, it means that heater
will we switched ON after configured
minutes since the moment HP has been
switched ON.
Smart Configuration:
Option to allow the tank to be heated to
an intermediate temperature of comfort in
conditions of water consumption in order
to avoid heating to the traditional setting
temperature (Only available in Economic mode).
• Comfort setting: Intermediate target
temperature of tank heating under water
consumption conditions
• Comfort cycles: Number of operations
allowed to heat water to the comfort
temperature.
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Anti Legionella function
?
N O T E
In case anti legionella treatment has not been possible to achieve within a time lapse of 6 hours since the moment it has been trigered, anti legionella
treatment is released and normal operation can be resumed.
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Status of anti legionella operation (enabled/deactivated)
Specified day for anti legionella operation
Specified time of the day for anti legionella operation
Setting for domestic hot water temperature in anti legionella operation..
Duration of shock treatment. Between 10 to 60 minutes.
Space priority temperature:
Threshold value of outdoor ambient
temperature for the activation of the
space priority function.
• Range: -20~0ºC
• Not available in High demand mode.
Anti Legionella:
In order to help prevent against Legionella
in the DHW system, the DHW set point
can be raised to a higher than normal
temperature.
The Legionella protection only makes
sense if there is a DHW electric heater to
raise the DHW temperature to this high
temperature.
See the possible configurable parameters
below.