Handleiding
Je bekijkt pagina 17 van 54
D-EOMZC00204-18_04EN 17/54
4.1.7.3 Setpoint Reset
The setpoint reset function overrides the water temperature setpoints selected through the interface, when certain
circumstances occur. This feature helps in reducing energy consumption optimizing comfort as well. Three different control
strategies can be selected:
• Setpoint Reset by Outside Air Temperature (OAT)
• Setpoint Reset by an external signal (4-20mA)
• Setpoint Reset by Evaporator ΔT (Return)
The following setpoints are available through this menu:
Parameter
Description
Setpoint Reset
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
Max Reset OAT
See Setpoint Reset by OAT Reset
Strt Reset OAT
See Setpoint Reset by OAT Reset
4.1.7.4 Setpoint Reset by OAT Reset
The active setpoint is calculated applying a correction which is a function of ambient temperature (OAT). As temperature
drops below the Start Reset OAT (SROAT), Cool LWT setpoint is gradually increased until OAT reaches the Max Reset
OAT value (MROAT). Beyond this value, the Cool LWT setpoint is increased by the Max Reset (MR) value. As temperature
grow over the Start Reset OAT (SROAT), Heat LWT setpoint is gradually reduced until OAT reaches the Max Reset OAT
value (MROAT). Above this value, the Heat LWT setpoint is decreased by the Max Reset (MR) value.
4.1.7.5 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 setpoints as set in Max Reset (MR).
4.1.7.6 Setpoint Reset by Evaporator Return Temperature
The active cooling setpoint is calculated applying a correction that depends on the evaporator entering (return) water
temperature. The active heating setpoint is calculated applying a correction that depends on the condenser entering
(return) water temperature.
The Return Reset may affect negatively the chiller operation when operated with variable flow.
Avoid to use this strategy in case of inverter water flow control.
4.1.8 Date/Time
4.1.8.1 Date, Time and UTC Settings
Date, time and UTC settings are available in the HMI.
4.1.8.2 Quiet Mode Scheduling
The Quiet Mode can be used to reduce chiller noise in certain hours of the day when noise reduction is more important
than cooling operation, like for example in night time. When Quiet Mode is activated, the LWT setpoint is increased by the
maximum setpoint reset (MR) described in the chapter “Setpoint Reset”, thus forcing a capacity limitation to the unit without
losing control on chilled water temperature. Also, condenser temperature target is increased by a value set in “QM Cond
Offset”. In this way condenser fans are forced to reduce speed without losing control on condensation. Quiet mode is timer
enabled.
The Quiet Mode may affect negatively chiller efficiency due to the increased condenser setpoint
Bekijk gratis de handleiding van Daikin EWYS5004Z, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | EWYS5004Z |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 7564 MB |
