Daikin ERLQ004CA Installer's Reference Manual

Contents

5 Application guidelinesInstaller reference guide21ERLQ004~008CA + EHBH/X04+08CBDaikin Altherma – Low temperature split4P384972-1B – 2017.04In case of… Use a… power meterIn other cases (i.e. a three-phaseoutdoor unit and/or a *9Wbackup heater model connectedto a three-phase grid)Three-phaseExampleSingle-phase power meter Three-phase power meterb580 1 5000c cfed gA B CaA Outdoor unitB Indoor unitC DHW tanka Electrical cabinet (L1/N)b Power meter (L1/N)c Fuse (L1/N)d Outdoor unit (L1/N)e Indoor unit (L1/N)f Backup heater (L1/N)g Booster heater (L1/N)b580 1 5000gfe hA B Cc c daA Outdoor unitB Indoor unitC DHW tanka Electrical cabinet (L1/L2/L3/N)b Power meter (L1/L2/L3/N)c Fuse (L1/L2/L3/N)d Fuse (L1/N)e Outdoor unit (L1/L2/L3/N)f Indoor unit (L1/L2/L3/N)g Backup heater (L1/L2/L3/N)h Booster heater (L1/N)Exception▪ You can use a second power meter if:▪ The power range of one meter is insufficient.▪ The electrical meter cannot easily be installed in the electricalcabinet.▪ 230 V and 400 V three-phase grids are combined (veryuncommon), because of technical limitations of power meters.▪ Connection and setup:▪ Connect the second power meter to X5M/9 and X5M/10.▪ In the software the power consumption data of both meters isadded so you do NOT have to set which meter covers whichpower consumption. You only need to set the number of pulsesof each power meter.▪ See "5.5.4 Preferential kWh rate power supply" on page 21 foran example with two power meters.5.5.4 Preferential kWh rate power supplyGeneral rule▪ Power meter 1: Measures the outdoor unit.▪ Power meter 2: Measures the rest (i.e. indoor unit, backup heaterand optional booster heater).Setup▪ Connect power meter 1 to X5M/7 and X5M/8.▪ Connect power meter 2 to X5M/9 and X5M/10.Power meter types▪ Power meter 1: Single- or three-phase power meter according tothe power supply of the outdoor unit.▪ Power meter 2:▪ In case of a single-phase backup heater configuration, use asingle-phase power meter.▪ In other cases, use a three-phase power meter.ExampleSingle-phase outdoor unit with a three-phase backup heater:e efeihg jA B Cbadc580 1 5000 580 1 5000A Outdoor unitB Indoor unitC DHW tanka Electrical cabinet (L1/N): Preferential kWh rate powersupplyb Electrical cabinet (L1/L2/L3/N): Normal kWh rate powersupplyc Power meter (L1/N)d Power meter (L1/L2/L3/N)e Fuse (L1/N)f Fuse (L1/L2/L3/N)g Outdoor unit (L1/N)h Indoor unit (L1/N)i Backup heater (L1/L2/L3/N)j Booster heater (L1/N)5.6 Setting up the power consumptioncontrol▪ The power consumption control:▪ Is only applicable for EHBH/X04+08 and EHVH/X04+08.▪ Allows you to limit the power consumption of the entire system(sum of outdoor unit, indoor unit, backup heater and optionalbooster heater).▪ Configuration: Set the power limitation level and how it has tobe achieved via the user interface.▪ The power limitation level can be expressed as:▪ Maximum running current (in A)▪ Maximum power input (in kW)▪ The power limitation level can be activated:▪ Permanently▪ By digital inputs5.6.1 Permanent power limitationPermanent power limitation is useful to assure a maximum power orcurrent input of the system. In some countries, legislation limits themaximum power consumption for space heating and DHWproduction.