ETVZ16S18DA6V ETVZ16S23DA6V
Heater capacity Step 1 kW 2 2
  Step 2 kW 2 or 4 2 or 4
Power input Nom. kW 0.33 0.33
Casing Material   Precoated sheet metal Precoated sheet metal
Dimensions Unit Height mm 1,650 1,850
    Width mm 595 595
    Depth mm 625 625
  Packed unit Height mm 1,820 2,020
    Width mm 720 720
    Depth mm 740 740
Weight Unit kg 120 128
  Packed unit kg 138 146
Packing Material   Wood, Carton, PE wrapping foil, Metal Wood, Carton, PE wrapping foil, Metal
  Weight kg 16 16
Pump Additional Zone Nr of speeds   PWM PWM
  Power input W 140 140
  Type   Grundfos UPML GEO 25-105 Grundfos UPML GEO 25-105
Pump Main Zone Nr of speeds   PWM PWM
  Power input W 140 140
  Type   Grundfos UPML GEO 25-105 Grundfos UPML GEO 25-105
Water side Heat exchanger Water flow rate Min. l/min 20.0 (1) 20.0 (1)
Expansion vessel Volume l 10 10
  Max. water pressure bar 3 3
  Pre pressure bar 1 1
Water Filter Additional Zone Diameter perforations mm 0.8 0.8
  Material   Plastic, Stainless steel Plastic, Stainless steel
Water filter Main Zone Diameter perforations mm 1.0 1.0
  Material   Copper - brass - stainless steel Copper - brass - stainless steel
Tank Name   Stainless steel domestic hot water tank 180 l Stainless steel domestic hot water tank 230 L
  Water volume l 180 230
  Material   Stainless steel (EN 1.4521) Stainless steel (EN 1.4521)
  Maximum water temperature °C 70.0 70.0
  Maximum water pressure bar 10 10
  Insulation Material   Polyurethane foam Polyurethane foam
    Heat loss kWh/24h 1.2 (2) 1.4 (2)
  Corrosion protection   Pickling Pickling
  Energy efficiency class   B B
  Standing heat loss W 50 58
  Storage volume l 180 220
General Supplier/Manufacturer details Name or trademark   Daikin Europe N.V. Daikin Europe N.V.
    Name and address   Daikin Europe N.V. - Zandvoordestraat 300, 8400 Oostende, Belgium Daikin Europe N.V. - Zandvoordestraat 300, 8400 Oostende, Belgium
3-way valve Coefficient of flow (kV) Space heating m³/h 8 8
    Domestic hot water tank m³/h 10 10
3-way valve mixing Coefficient of flow (kV) Bypass m³/h 13 13
    Main zone only m³/h 8 8
Water circuit Piping material   Cu Cu
  Internal piping diameter inch 1-1/4" 1-1/4"
  Piping inch 1" 1"
  Safety valve bar 3 3
  Manometer   Digital Digital
  Drain valve / fill valve   No No
  Shut off valve   Yes Yes
  flowswitch   Yes Yes
  Air purge valve   Yes Yes
  Total water volume l 3.5 (3) 3.5 (3)
  Minimum water volume in the system for cooling l 20 (4) 20 (4)
  Minimum water volume in the system for heating l 20 (4) 20 (4)
Water circuit - space heating side (additional zone) Air purge valve   Yes Yes
  Drain valve / fill valve   No No
  Manometer   Yes Yes
  Piping connections diameter inch G 1" (FEMALE) G 1" (FEMALE)
  Safety valve bar 3 3
  Shut off valve   Yes Yes
Water circuit - space heating side (main zone) Air purge valve   No No
  Manometer   Yes Yes
  Piping connections diameter inch G 1 (FEMALE) G 1 (FEMALE)
  Safety valve bar Yes Yes
  Shut off valve   Yes Yes
Water circuit - Domestic hot water side Piping material   Stainless steel Stainless steel
  Piping connections Cold water in / Hot water out inch G 3/4" FEMALE G 3/4" FEMALE
    Recirculation connection inch G 3/4" FEMALE G 3/4" FEMALE
Sound power level Nom. dBA 44.0 (5) 44.0 (5)
Sound pressure level Nom. dBA 30.0 (6) 30.0 (6)
Operation range Heating Ambient Min. °C 0 (7) 0 (7)
      Max. °C 0 (7) 0 (7)
    Water side Min. °C 0 (7) 0 (7)
      Max. °C 0 (7) 0 (7)
  Indoor installation Ambient Min. °CDB 5 5
      Max. °CDB 35 (8) 35 (8)
  Cooling Ambient Min. °CDB 0 (7) 0 (7)
      Max. °CDB 0 (7) 0 (7)
    Water side Min. °C 0 (7) 0 (7)
      Max. °C 0 (7) 0 (7)
  Domestic hot water Water side Min. °C 0 (7) 0 (7)
      Max. °C 0 (7) 0 (7)
Safety devices Item 01   Thermal cut out Thermal cut out
Power supply Name   See note 9 See note 9
  Voltage range Min. % 10 10
    Max. % 10 10
Class IP   IP X0B IP X0B
Electric heater Power supply Name   6V3 6V3
    Phase   1~ / 3~ 1~ / 3~
    Frequency Hz 50 50
    Voltage V 230 230
  Current Maximum running current A 26.0 26.0
    Zmax List Ω 0.22 0.22
    Minimum Ssc value   Equipment complying with EN/IEC 61000-3-12 Equipment complying with EN/IEC 61000-3-12
  Recommended fuses A 20.000 (10) 20.000 (10)
Wiring connections Communication cable Quantity   3 3
    Remark   2.5 mm² 2.5 mm²
  Electric meter Quantity   2 2
    Remark   Minimum 0.75 mm² (5VDC pulse detection) Minimum 0.75 mm² (5VDC pulse detection)
  Preferential kWh rate power supply Quantity   Power: 2 Power: 2
    Remark   Power 6.3A (Select diameter and type according to national and local regulations) Power 6.3A (Select diameter and type according to national and local regulations)
  Domestic hot water pump Quantity   2 2
    Remark   Minimum 0.75 mm² (2A inrush, 1A continuous) Minimum 0.75 mm² (2A inrush, 1A continuous)
  For power supply back-up heater Quantity   Prewired Prewired
  For connection with R6T Quantity   2 2
    Remark   Minimum 0.75 mm² Minimum 0.75 mm²
  For connection with A3P Quantity   Depends on thermostat type, cf. installation manual Depends on thermostat type, cf. installation manual
    Remark   Voltage: 230V / Max. current: 100mA / Min. 0.75mm² Voltage: 230V / Max. current: 100mA / Min. 0.75mm²
  For connection with M2S Quantity   2 2
    Remark   Voltage: 230V / Max. current: 100mA / Min. 0.75mm² Voltage: 230V / Max. current: 100mA / Min. 0.75mm²
  For connection with optional FWXV* (demand input and output) Quantity   4 4
    Remark   100 mA, minimum 0.75 mm² 100 mA, minimum 0.75 mm²
Notes (1) - Operation area is extended to lower flow rates only in case the unit operates with heat pump only. (Not in startup, no BUH operation, no defrost operation). (1) - Operation area is extended to lower flow rates only in case the unit operates with heat pump only. (Not in startup, no BUH operation, no defrost operation).
  (2) - Based on a dT of 45 K (2) - Based on a dT of 45 K
  (3) - Including piping + back-up heater; excluding expansion vessel (3) - Including piping + back-up heater; excluding expansion vessel
  (4) - Excluding the water in the unit. This minimum water volume is sufficient for most applications. During critical processes extra water may be required. (4) - Excluding the water in the unit. This minimum water volume is sufficient for most applications. During critical processes extra water may be required.
  (5) - Measured with a pressure drop of 10 kPa in the heating system at an operating condition of leaving water 47-55°C in a room with an ambient of 20°C. DB/WB 7°C/6°. (5) - Measured with a pressure drop of 10 kPa in the heating system at an operating condition of leaving water 47-55°C in a room with an ambient of 20°C. DB/WB 7°C/6°.
  (6) - Value measured in an anechoic room at 1m distance from the unit. It is a relative value, depending on the distance and acoustic environment. The sound pressure level mentioned is measured with a pressure drop of 10 kPa in the heating system at an operating condition of leaving water 47-55°C in a room with an ambient of 20°C. (6) - Value measured in an anechoic room at 1m distance from the unit. It is a relative value, depending on the distance and acoustic environment. The sound pressure level mentioned is measured with a pressure drop of 10 kPa in the heating system at an operating condition of leaving water 47-55°C in a room with an ambient of 20°C.
  (7) - Refer to operation range of the unit. (7) - Refer to operation range of the unit.
  (8) - Depends on operation mode, refer to installation manual. (8) - Depends on operation mode, refer to installation manual.
  (9) - Above mentioned power supply of the hydrobox is for the backup heater only. The switch box and the pump of the hydrobox are supplied via the outdoor unit. The optional domestic hot water tank has a separate power supply. (9) - Above mentioned power supply of the hydrobox is for the backup heater only. The switch box and the pump of the hydrobox are supplied via the outdoor unit. The optional domestic hot water tank has a separate power supply.
  (10) - 4 pole 20 A curve 400V tripping class C (refer to wiring diagram) (10) - 4 pole 20 A curve 400V tripping class C (refer to wiring diagram)