Daikin EWWQ-G - Tmp Setpoints; Temperatures

EWWQ090G ÷ EWWQ720L - R410A - Water-cooled scroll chillers
EWLQ090G ÷ EWLQ720L - R410A - Condenser less
EWHQ100G ÷ EWHQ400G - R410A - Heat pump scroll chillers
EWAQ- - R410A - Air-cooled scroll chillers
EWAQ- - R410A - Air-cooled scroll chillers
EWYQ- - R410A - Air-cooled scroll heat pumps
Air and Water cooled scroll chillers & heat pump
Operation
Manual
EWWQ - EWLQ - EWHQ
EWAQ - EWYQ
Air or Water cooled scroll chiller &
heat pump
D-EOMHW00107-15EN
Operation Manual
35
Cond Sat Temp=
-
-
Condenser pressure
Evap Sat Temp=
-
-
Evaporator pressure
VFD Speed=
-
0-100%
Actual fan speed
Fan Max Speed=
100%
50…100%
Maximum fan speed
Fan Min Speed=
20%
20…50%
Minimum fan speed
4.3.1.4 EXV
This page resumes all the relevant information about the status of the EXV logic. For more details
about this parameters and the control logic of the EXV refer to section 5.7.
Setpoint/Sub-Menu
Default
Range
Description
EXV State=
Closed
Closed, Pressure, Superheat
Suction SH=
-
Suction Superheat
Evap Pressure
-
Evaporating pressure
Act Position=
-
Expansion valve opening
Cool SSH Target=
6.5dK
4.4…30.0dK
Cool Suction Superheat setpoint
Heat SSH Target=
6.5dK
2.5…30.0dK
Heat Suction Superheat setpoint (H/P only)
Max Op Pressure=
900.0 kPa
890.0…1172.2kPa
Maximum operating pressure
4.3.1.5 Defrost (A/C only)
This page resumes all the relevant settings for defrost management. For further information about
the defrost procedure refer to section 5.8
Setpoint/Sub-Menu
Default
Range
Description
Man Defrost=
Off
Off, On
Closed, Pressure, Superheat
Defrost Cnt=
0
Counter of defrost cycles
Defrost State=
W
W, Pr1, 4W1, Df,
Pr2, 4W2, WuH
Defrost execution phase
Cond Pr Lim=
2960kPa
2200…3100kPa
Condensing pressure limit to finish the defrost
Time to Defrost=
20s
0…310s
Delay before the defrost is started when the defrost request is active
Defrost Parameter=
10dK
4…15dK
Parameter do identify the need for a defrost
Defrost Timeout=
600s
240…1800s
Maximum defrost duration
Reset Cnt=
Off
Off, On
Defrost counter Reset
4.4 Tmp Setpoints
This page allows to set the water temperature setpoints in the several modes. For more details
refer to the section 0.
Setpoint/Sub-Menu
Default
Range
Description
Cool LWT 1=
7.0°C
4.0…15.0°C (cool
mode)
-8.0…15.0°C (cool w/
glycol mode)
Primary cooling setpoint
Cool LWT 2=
7.0°C
4.0…15.0°C (cool
mode)
-8.0…15.0°C (cool w/
glycol mode)
Secondary cooling setpoint (see 3.6.3)
Ice LWT=
4.0°C
-10.0…4.0°C
Ice setpoint (ice banking with on/off mode)
Heat LWT 1=
45.0°C
25.0…55.0°C
Primary heating setpoint (H/P only)
Heat LWT 2=
45.0°C
25.0…55.0°C
Secondary heating setpoint (H/P only)
4.5 Temperatures
This page shows all water temperatures, evaporator and condenser delta temperature between
inlet and outlet.
Setpoint/Sub-Menu
Default
Range
Description
Evap LWT=
-
-
Evaporator leaving water temperature
Evap EWT=
-
-
Evaporator entering water temperature
Cond LWT=
-
-
Condenser leaving water temperature
Cond EWT=
-
-
Condenser entering water temperatue