Daikin VRV RXYMQ-A Series Service Manual page 134

Field Settings for Outdoor Unit
 The graph below shows the different patterns of target Te according to setting 2-81 "cooling
 Mode 2-82: Heating comfort setting. The comfort level is related to the timing and the effort
 Mode 2-83: Allocation of cool/heat master logic. When system contains VRV DX indoor
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 2: Quick. 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 6°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.
 3: Powerful. 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 3°C on temporary
base depending on the situation. This setting is used in conjunction with setting 2-8.
comfort setting"
Refrigerant temperature
Target
Te
Te 6°C
Te 3°C
(power consumption) which is put in achieving a certain room temperature by changing
temporally the refrigerant temperature to different values in order to achieve requested
conditions more quickly.
 Default value: 1 (Mild). Overshooting during heating operation is allowed compared to
the requested refrigerant temperature, in order to achieve the required room temperature
very fast. The overshoot is not allowed from the startup moment. The startup occurs
under the condition which is defined by the operation mode. In case of heating operation
the condense temperature is allowed to go up to 46°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. The startup condition is different from the powerful and quick comfort
setting.
 Field setting:
 0: "Eco". The original refrigerant temperature target, which is defined by the Tc setting
(field setting 2-9) in heating mode, is kept without any correction, unless for protection
control.
 2: "Quick". Overshoot during heating 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 heating operation the
condense temperature is allowed to go up to 46°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.
 3: "Powerful". The overshoot is allowed from the start up moment. In case of heating
operation the condense temperature is allowed to go up to 49°C on temporary base
depending on the situation. This setting is used in conjunction with setting 2-9.
and RA indoor (through BP units), it is required to assign the cool/heat change over logic to
follow.
SiME332106E
Powerful mode
Quick mode
Mild mode
time
Part 5 Field Settings and Test Operation