Daikin ERHQ011BA Installer's Reference Manual

Also see for ERHQ011BA: Installer's reference guide

Contents

Installer reference guide23 EHBH/X16Daikin Altherma - Low Temperature Split4P313776-1 – 2012.057 Installation6.3.4 Overview of electrical connections forexternal and internal actuatorsThe following illustration shows the required field wiring.7 Installation7.1 Opening the units7.1.1 To open the indoor unit1 Loosen and remove the 2 screws that fix the front panel.2 Tilt the front panel towards you and remove the front panel.INFORMATIONThe following illustration is an example and may NOTmatch your system layout.a Single power supply for outdoor unit, backup heater andbooster heaterb Backup heaterc Indoor unitd Domestic hot water tanke Booster heaterItem Description WiresMaximumrunningcurrentOutdoor unit and indoor unit power supply1 Power supply foroutdoor unit2+GND or3+GND(a)2 Power supply andinterconnection cableto indoor unit3 (c)3 Power supply forbackup heaterSee table below. —4 Preferential kWh ratepower supply (voltagefree contact)2 (e)5 Normal kWh rate powersupply2 6.3 AUser interface6 User interface 2 (f)Optional equipment7 3-way valve 3 100 mA(b)8 Power supply forbooster heater andthermal protection(from indoor unit)4+GND (c)9 Power supply forbooster heater (toindoor unit)2+GND 13 A10 Domestic hot watertank thermistor2 (d)11 Power supply forbottom plate heater2 (b)12 Room thermostat 3 or 4 100 mA(b)13 Outdoor ambienttemperature sensor2 (b)14 Indoor ambienttemperature sensor2 (b)15 Heat pump convector 4 100 mA(b)MM6 7c1621de8 10a9 191214b201513141718Field supplied components16 Shut-off valve 2 (b)17 Electricity meter 2 (per meter) (b)18 Domestic hot waterpump2 (b)19 Alarm output 2 (b)20 Changeover to externalheat source control2 (b)21 Space cool/heatoperation control2 (b)22 Power consumptiondigital inputs2 (per inputsignal)(b)(a) Refer to name plate on outdoor unit.(b) Minimum cable section 0.75 mm².(c) Cable section 2.5 mm².(d) The thermistor and connection wire (12 m) are delivered with thedomestic hot water tank.(e) Cable section 0.75 mm² till 1.25 mm²; maximum length: 50 m.Voltage-free contact shall ensure the minimum applicable load of15 V DC, 10 mA.(f) Cable section 0.75 mm² till 1.25 mm²; maximum length: 500 m.Applicable for both single user interface and dual use interfaceconnection.Backup heatertype Power supplyRequired number ofconductors*3V 1x 230 V 2+GND*9W 1x 230 V 2+GND + 2 bridges3x 230 V 3+GND + 1 bridge3x 400 V 4+GNDItem Description WiresMaximumrunningcurrent2x