Daikin EKHBX008BB3V3S Installation Manual

Contents

Daikin EKHBX008BB3V3S Installation Manual Manual pdf 21 page image

EKHBX008BB3V3SIndoor unit for air to water heat pump system4PW62597-1 – 10.2010Installation manual187.2. Internal wiring - Parts tableRefer to the internal wiring diagram supplied with the unit (on theinside of the indoor unit switch box cover). The abbreviations usedare listed below.A1P........................ Main PCBA2P........................ User interface PCBA3P.................* ..... Thermostat (EKRTW/R) (PC=Power Circuit)(optional)A3P.................* ..... Solar pump station PCB (EKSR3PA) (optional)A4P.................* ..... Digital I/O PCB (EKRP1HB) (optional)A4P.................* ..... Receiver PCB (EKRTR) (optional)BSK ................* ..... Solar pump station relay (EKSR3PA) (optional)E1H........................ Backup heater element 1E4H............ ### ..... Booster heater (3 kW)(1)F1B ........................ Fuse backup heaterF2B ............ ### ..... Fuse booster heater(2)F1T ........................ Thermal fuse backup heater (250 V, 100°C)FU1........................ Fuse 3.15 A T 250 V for PCBFU2........................ Fuse 5 A T 250 VFuR,FuS ................ Fuse 5 A 250 V for digital I/O PCBK1M ....................... Contactor backup heater stepK3M ........... ### ..... Contactor booster heater(3)K4M ....................... Pump relayK5M ....................... Contactor for backup heater all poledisconnectionM1P ....................... Pump (field supply)M2S ............. ## ..... 2-way valve for cooling mode (field supply)M3S ............... # ..... 3-way valve: floor heating/domestic hot waterPHC1 ..................... Optocoupler input circuitQ1DI,Q2DI............. Earth leakage circuit breaker (field supply)Q1L........................ Thermal protector backup heaterQ2L,Q3L .... ### ..... Thermal protector booster heaterR1H ................* ..... Humidity sensor (EKRTR) (optional)R1T.................* ..... Ambient sensor (EKRTR and EKRTW) (optional)R1T........................ Outlet water heat exchanger thermistorR2T.................* ..... External sensor (floor or ambient) (EKRTETS)(optional)R2T........................ Outlet water backup heater thermistorR3T........................ Refrigerant liquid side thermistorR4T........................ Inlet water thermistorR5T................ # ..... Domestic hot water thermistorS1L ........................ Flow switchS2S........................ Benefit kWh rate power supply contactS3S........................ Dual set point 2 contactS4S........................ Dual set point 1 contactSS1........................ DIP switchTR1........................ Transformer 24 V for PCBV1S........................ Spark suppression 1V2S........................ Spark suppression 2X1M~X9M.............. Terminal blocksX6Y,X9B ................ Connector7.3. System overview of field wiringThe illustration below gives an overview of the required field wiringbetween several parts of the installation. Refer also to "3.4. Typicalapplication examples" on page 4.A Single power supply for outdoor unit, backup heater andbooster heaterB Outdoor unitC Bottom plate heaterD Backup heater (4)E Indoor unitF Room thermostat (optional)G 3-way valve for domestic hot water tank (optional)H 2-way valve for cooling mode (field supply)I Domestic hot water tank (optional)J Booster heater (5)K User interface (digital controller)L Power supply (normal kWh rate power supply: only in caseof benefit kWh rate power supply installation)M Pump (field supply)(1) Only applicable for tank with built-in electrical booster heater (EKHW*).(2) Only applicable for tank with built-in electrical booster heater (EKHW*).(3) Only applicable for tank with built-in electrical booster heater (EKHW*).* Optional# Applications with domestic hot water tank only.## Heating/cooling applications only### Delivered with the domestic hot water tank (a) .(a) Only applicable for tank with built-in electrical booster heater(EKHW*).WARNING■ Switch off the power supply before making anyconnections.■ All field wiring and components must be installed by alicensed electrician and must comply with theapplicable legislation.(4) For tank without electrical booster heater (EKHTS), the backup heater willbe used in domestic water heating mode.(5) Only applicable for tank with built-in electrical booster heater (EKHW*).MTIMMB D2612 1478 9EA L3FKICJHG110111345