Daikin VRV RXYQ72-384XAYCA, Service Manual

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SiUS342004EB Field Settings for Outdoor Unit
Part 5 Field Settings and Test Operation 202

To activate this operation method under heating operation, change field setting [2-9] to 0
(default).
• Hi-sensible/economic (cooling/heating)
The refrigerant temperature is set higher/lower (cooling/heating) compared to basic operation. The
focus under high sensible mode is comfort feeling for the customer.
The selection method of indoor units is important and has to be considered as the available
capacity is not the same as under basic operation. For details concerning to Hi-sensible
applications, please contact your dealer.

To activate this setting under cooling operation, change field settings [2-8] to the appropriate
values, matching the requirements of the pre-designed system containing a high sensible
solution.

To activate this setting under heating operation, change field setting [2-9] to the appropriate
value, matching the requirements of the pre-designed system containing a high sensible
solution.
2.7.2 Comfort Settings
For each of above modes a comfort level can be selected. The comfort level is related to the timing
and the effort (energy consumption) which is put in achieving a certain room temperature by
temporarily changing the refrigerant temperature to different values in order to achieve requested
conditions more quickly.
• Powerful
Overshoot (during heating operation) or undershoot (during cooling operation) is allowed compare
to the requested refrigerant temperature, in order to achieve the required room temperature very
fast. The overshoot is allowed from the start up moment.
In case of cooling operation the evaporating temperature is allowed to go down to 37°F (3°C) on
temporary base depending on the situation.
In case of heating operation the condense temperature is allowed to go up to 120°F (49°C) on
temporary base depending on the situation.
When the request from the indoor units becomes more moderate, the system will eventually go to
the steady state condition which is defined by the operation method above.

To activate the powerful comfort setting under cooling operation, change field setting [2-81] to 3.
This setting is used in conjunction with settings [2-8].

To activate the powerful comfort setting under heating operation, change field setting [2-82] to
3. This setting is used in conjunction with setting [2-9].
• Quick
Overshoot (during heating operation) or undershoot (during cooling operation) is allowed compared
to the requested refrigerant temperature, in order to achieve the required room temperature very
fast. The overshoot is allowed from the start up moment.
In case of cooling operation the evaporating temperature is allowed to go down to 43°F (6°C) on
temporary base depending on the situation.
Value
[2-8]
Te target
3 45°F (7°C)
4 46°F (8°C)
5 48°F (9°C)
6 50°F (10°C)
7 52°F (11°C)
Value
[2-9]
Tc target
1 106°F (41°C)
3 109°F (43°C)