Hitachi YUTAKI Series - Space Heating; Space Cooling Configuration

7.8.2.4 Space Heating / Space Cooling conguration
Control the temperature for Space Heating or Space Cooling by conguring the following parameters.
Working Limits:
Limit for the temperature set-point to
prevent high or low temperatures at
Space Heating or Space Cooling:
• Maximum supply temperature
• Minimum supply temperature
Water calculation mode:
Selection of the water set point for
Circuit 1 or Circuit 2 (Space Heating
or Space Cooling).
• Disabled
• Points
• Gradient (only in heating mode)
• Fix
See detailed explanation below.
Eco Offset Water setting:
Congure the offset water temperature
for the ECO mode for Space Heating
or Space Cooling.
By using this function, current water
temperature setting is reduced by the
indicated parameter.
• Range: -10 ~ 10
Mixing valve:
To control the second water temperature (only for
circuit 2).
Values are adjusted for the use with the 2nd zone
mixing kit accessory ATW-2KT-05. It is highly
recommended not to change these values.
In case of using a mixing kit different from the ATW-
2KT-05 congure the following parameters:
• Proportional band: 0 ~20 K (6.0 K by default).
• Integral reset factor: 0.0 ~20 % (2.5 % by default).
• Running time factor: 10 ~250 sec (140 sec by
default).
• Over temperature offset protection: OFF, 3 ~10 ºC
(5 ºC by default).
UNIT CONTROLLER
PMML0510 rev.1 - 10/2019
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