Daikin EWAQ-G-SS handleiding

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Handleiding

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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-EOMHW00106-15EN
Operation Manual
43
External signal (4-20mA),
Evaporator or Condenser (W/C only) ΔT (Return),
OAT Reset (A/C only)
The following setpoints are available through the menu 4.2.6:
Lwt Rest Type
Set the Setpoint Reset mode (None, 4-20 mA, Return, OAT)
Max Reset
Max Setpoint Reset (valid for all active modes)
Start Reset DT
Used on Setpoint Reset by Evaporator DT
Setpoint Reset by External 4-20 mA Signal
The active setpoint is calculated applying a correction based on an external 4-20mA signal. 4 mA
corresponds to 0°C correction, while 20 mA corresponds to a correction of the active setpoint as
set in Max Reset (MR). The pictures below shows how is modified the setpoint respectively in
chiller and heat pump mode. The following abbreviations are used.
Setpoint Reset by Evaporator Return Temperature
The active setpoint is calculated applying a correction that depends on the evaporator entering
(return) water temperature
If the unit works in heat pump mode with water inversion the correction depends on the condenser
entering (return) water temperature (W/C only).
When the evaporator/condenser ΔT becomes lower than the SRΔT value, an offset to the LWT
setpoint is increasingly applied, up to the MR value when the ΔT is equal to zero
MR
Max Reset
AS
Active Setpoint
LWT SP
LWT Setpoint
Signal
4-20 mA Analog input singal
MR
Max Reset
AS
Active Setpoint
SRT
Start Reset DT
LWT SP
LWT Target
4mA
20mA
Signal
AS
LWT SP
LWT SP - MR
MR
Heat Mode
4mA
20mA
Signal
AS
LWT SP
LWT SP + MR
MR
Cool Mode
0
SRT
AS
LWT SP
LWT SP - MR
MR
Heat Mode
SRT
Evap T
AS
LWT SP
LWT SP + MR
MR
Cool Mode
Evap T
Cond T

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Productinformatie

MerkDaikin
ModelEWAQ-G-SS
CategorieAirco
TaalNederlands
Grootte11467 MB