Daikin ERLQ004CA Installer's Reference Manual

Contents

9 CommissioningInstaller reference guide76ERLQ004~008CA + EHBH/X04+08CBDaikin Altherma – Low temperature split4P384972-1B – 2017.049.4.1 To check the minimum flow rate1 Confirm according to the hydraulic configuration which spaceheating loops can be closed due to mechanical, electronic, orother valves.2 Close all space heating loops that can be closed (see previousstep).3 Start the pump test run operation (see "9.4.4 To perform anactuator test run" on page 77).4 Go to [6.1.8]: > Information > Sensor information > Flow rateto check the flow rate. During pump test run operation, the unitcan operate below this minimum required flow rate.Bypass valve foreseen?Yes NoModify the bypass valve settingto reach the minimum requiredflow rate + 2 l/minIn case the actual flow rate isbelow the minimum flow rate,modifications at the hydraulicconfiguration are required.Increase the space heating loopsthat can NOT be closed or installa pressure‑controlled bypassvalve.Minimum required flow rate during defrost/backup heateroperation04+08 models 12 l/min11+16 models 15 l/min9.4.2 Air purge functionWhen commissioning and installing the unit, it is very important toremove all air in the water circuit. When the air purge function isrunning, the pump operates without actual operation of the unit andthe removal of air in the water circuit will start.NOTICEBefore starting the air purge, open the safety valve andcheck if the circuit is sufficiently filled with water. Only ifwater escapes the valve after opening it, you can start theair purge procedure.There are 2 modes for purging air:▪ Manually: the unit will operate with a fixed pump speed and in afixed or custom position of the 3-way valve. The custom positionof the 3-way valve is a helpful feature to remove all air from thewater circuit in the space heating or the domestic hot waterheating mode. The operation speed of the pump (slow or quick)can also be set.▪ Automatic: the unit automatically changes the pump speed andthe position of the 3-way valve between the space heating or thedomestic hot water heating mode.Typical workflowPurging the air from the system should consist of:1 Performing a manual air purge2 Performing an automatic air purgeINFORMATIONStart by performing a manual air purge. When almost allthe air is removed, perform an automatic air purge. Ifnecessary, repeat performing the automatic air purge untilyou are sure that all air is removed from the system.During air purge function, pump speed limitation [9‑0D] isNOT applicable.Make sure that the leaving water temperature home page, roomtemperature home page, and domestic hot water home page areturned OFF.The air purge function automatically stops after 30 minutes.To perform a manual air purgePrerequisite: Make sure that the leaving water temperature homepage, room temperature home page, and domestic hot water homepage are turned OFF.1 Set the user permission level to Installer. See "To set the userpermission level to Installer" on page 47.2 Set the air purge mode: go to [A.7.3.1] > Installer settings >Commissioning > Air purge > Type.3 Select Manual and press .4 Go to [A.7.3.4] > Installer settings > Commissioning > Airpurge > Start air purge and press to start the air purgefunction.Result: The manual air purge starts and the following screenappears.01:18TueAir purge l/minLowSHC0.5Flow rateSpeedCircuitStop Adjust Scroll5 Use the and buttons to scroll to Speed.6 Use the and buttons to set the desired pump speed.Result: LowResult: High7 If applicable, set the desired position of the 3-way valve (spaceheating/domestic hot water)(space heating/domestic hot water).Use the and buttons to scroll to Circuit.8 Use the and buttons to set the desired position of the 3-wayvalve (space heating/domestic hot water).Result: SHCResult: TankTo perform an automatic air purgePrerequisite: Make sure that the leaving water temperature homepage, room temperature home page, and domestic hot water homepage are turned OFF.1 Set the user permission level to Installer. See "To set the userpermission level to Installer" on page 47.2 Set the air purge mode: go to [A.7.3.1] > Installer settings >Commissioning > Air purge > Type.3 Select Automatic and press .4 Go to [A.7.3.4] > Installer settings > Commissioning > Airpurge > Start air purge and press to start the air purgefunction.Result: Air purging will start and the following screen will beshown.01:18TueAir purge l/minLowSHC0.5Flow rateSpeedCircuitStop Adjust ScrollTo interrupt air purge1 Press and press to confirm the interruption of the airpurge function.