Daikin EWAQ016CAW Installation And Operation Manual

Daikin EWAQ016CAW Installation And Operation Manual Manual pdf 29 page image

12 OperationInstallation and operation manual29EWAQ016~064CAW + EWYQ016~064CAWPackaged air-cooled water chiller4P489435-1B – 2017.1012.3.2 About operating the systemIf the main power supply is turned off during operation, operation willrestart automatically after the power turns back on again.12.3.3 Space cooling operationSpace cooling can be controlled in 2 different ways:▪ based on room temperature▪ based on leaving water temperature (default)To switch space cooling on/off using roomtemperature controlIn this mode, cooling will be activated as required by the roomtemperature setpoint. The setpoint can be set manually or throughthe schedule timer.INFORMATION▪ When using room temperature control, space coolingoperation based on room temperature will have priorityover leaving water control.▪ It is possible that the leaving water temperaturebecomes higher than the setpoint if the unit iscontrolled by room temperature.1 Press to switch space cooling ( ) on/off.Result: and the corresponding actual room temperaturesetpoint appear on the display. The operation LED lights up.2 Set the desired room temperature using and . Forsetup of the schedule timer function, see "12.3.6 Scheduletimer" on page 30.INFORMATIONTemperature range for cooling: 16°C~32°C (roomtemperature)3 Select the leaving water temperature which you want to beused to cool down your system using and . Fordetailed information, see "To switch space cooling on/off usingleaving water temperature control" on page 29.To switch space cooling on/off using leaving watertemperature controlIn this mode, cooling will be activated as required by the watertemperature setpoint. The setpoint can be set manually or throughthe schedule timer.1 Press to switch space cooling ( ) on/off.Result: and the corresponding actual room temperaturesetpoint appear on the display. The operation LED lights up.2 Set the desired leaving water temperature using and. In case the unit has the low temperature coolingoption, lower leaving water temperatures (<5°C) are possible,depending on the glycol concentration setting. For moreinformation, see field setting [9] in "6.2.9 Field settings on theremote controller" on page 16.INFORMATIONTemperature range for cooling: 5°C~20°C (leaving watertemperature) (–10°C~20°C when glycol is used).For setup of the schedule timer function, see "To program spacecooling" on page 32, "To program space heating" on page 33, and"To program quiet mode" on page 33.INFORMATION▪ When an external room thermostat is installed, thethermo ON/OFF is determined by the external roomthermostat. The remote controller is then operated inthe leaving water control mode and is not functioningas a room thermostat.▪ The remote controller ON/OFF status always haspriority over the external room thermostat!INFORMATIONSetback operation and weather dependent setpoint are notavailable in the cooling mode.12.3.4 Space heating operationSpace heating is available for heat pump units only.Space heating can be controlled in 2 different ways:▪ based on room temperature▪ based on leaving water temperature (default)To switch space heating on/off using roomtemperature controlRoom temperature controlIn this mode, heating will be activated as required by the roomtemperature setpoint. The setpoint can be set manually or throughthe schedule timer.INFORMATION▪ When using room temperature control, space heatingoperation based on room temperature will have priorityover leaving water control.▪ It is possible that the leaving water temperaturebecomes higher than the setpoint if the unit iscontrolled by room temperature.1 Press to switch space heating ( ) on/off.Result: and the corresponding actual room temperaturesetpoint appear on the display. The operation LED lights up.2 Set the desired room temperature using and . Inorder to avoid overheating, space heating cannot be used whenthe outdoor ambient temperature rises above a certaintemperature (see "12.1 Operation range" on page 27). Forsetup of the schedule timer function, see "12.3.6 Scheduletimer" on page 30.INFORMATIONTemperature range for heating: 16°C~32°C (roomtemperature)3 Select the leaving water temperature which you want to beused to heat up your system using and . Fordetailed information, see "To switch space heating on/off usingleaving water temperature control" on page 30.Automatic setback functionFor the automatic setback function settings, see field setting [2] in"6.2.9 Field settings on the remote controller" on page 16.