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TOP-Z 20/4

Data sheet

Hydraulic data
  • Maximum operating pressure PN
    10 bar
  • Delivery head for Qmin H Qmin
    3.6
  • Max. volume flow Qmax
    4.0
  • Min. fluid temperature Tmin
    -20 °C
  • Max. fluid temperature Tmax
    110 °C
  • Min. ambient temperature Tmin
    0 °C
  • Max. ambient temperature Tmax
    40 °C
  • Max. permitted total water hardness
    3.57 mmol/l (20°dH) (3.21 mmol/l (18°dH) for 20/4 + 25/6)
Motor data
  • Mains connection
    3~400 V, 50 Hz
  • Rated power P2
    60.0 W
  • Rated current IN
    0.35 A
  • Max. speed nmax
    2850 rpm
  • Power consumption P1 min
    35.0 W
  • Power consumption P1 max
    100.0 W
  • Emitted interference
    EN 61000-6-3
  • Interference resistance
    EN 61000-6-2
  • Protection class motor
    IPX4D
  • Insulation class
    H
  • Threaded cable connection
    1 x PG13.5
  • Motor protection
    integrated
Materials
  • Pump housing
    1.4031
  • Impeller
    PPE-GF30
  • Shaft
    Oxide ceramic
  • Bearing
    Carbon-graphite
Installation dimensions
  • Pipe connection on the suction side RPS
    G 1¼
  • Pipe connection on the pressure side RPD
    G 1¼
  • Port-to-port length l0
    150 mm
Information for order placements
  • Brand
    Wilo
  • Product description
    TOP-Z 20/4
  • EAN number
    4016322652779
  • Article number
    2045520
  • Net weight, approx. m
    3 kg
  • Gross weight, approx. m
    3.8 kg
  • Length with packaging
    270 mm
  • Height with packaging
    215 mm
  • Width with packaging
    178 mm
  • Packaging property
    Transport packaging
  • Packaging type
    Cardboard box
  • Minimum order quantity
    1

Tender text

This circulator is suitable only for drinking water.

Can be used for domestic hot water circulation systems in the industry and building services.

Maintenance-free glandless circulator with threaded or flange connection, pre-selectable speed stages for power adjustment.

Equipment and function

  • Manual power adjustment with 3 speed stages
  • Pumps with 1~ motor:
    • P2 up to 90 W: internal protection against unacceptably high winding temperatures
    • P2 = 180 W: Full motor protection with thermal winding contacts in conjunction with tripping unit
  • Pumps with 3~ motor:
    • P2 up to 90 W: internal protection against unacceptably high winding temperatures
    • P2 ≥ 180 W: Full motor protection with integrated trip electronics
  • Fault signal light
  • Contact for collective fault signal
  • Direction of rotation signal lamp
  • Mains connection 3~, 230 V with optional switching plug
  • Pump housing in red brass or grey cast iron (stainless steel depending on type)
  • PN 6/PN 10 combination flange (for DN 40 to DN 65)
  • Thermal insulation shells
  • Additional functions by retrofittable Protect Module C:
    • SSM fault signal as potential-free NC contact
    • SBM run signal as potential-free NO contact
    • "Overriding Off" control input via external potential-free contact (NC contact)
    • Blocking detection
    • Full motor protection with tripping unit
    • Fault acknowledgement
  • Dual pump management (two single pumps installed in parallel) Main/standby operation (automatic fault-actuated switchover/time-sensitive pump alteration)
Operating data
  • Fluid media
    Water
  • Maximum operating pressure PN
    10 bar
  • Max. permitted total water hardness
    3.57 mmol/l (20°dH) (3.21 mmol/l (18°dH) for 20/4 + 25/6)
Motor data
  • Emitted interference
    EN 61000-6-3
  • Interference resistance
    EN 61000-6-2
  • Mains connection
    3~400 V, 50 Hz
  • Power consumption P1 max
    100.0 W
  • Max. speed nmax
    2850 rpm
  • Rated current IN
    0.35 A
  • Protection class motor
    IPX4D
  • Threaded cable connection
    1 x PG13.5
Materials
  • Pump housing
    1.4031
  • Impeller
    PPE-GF30
  • Shaft
    Oxide ceramic
  • Bearing
    Carbon-graphite
Installation dimensions
  • Pipe connection on the suction side RPS
    G 1¼
  • Pipe connection on the pressure side RPD
    G 1¼
  • Port-to-port length l0
    150 mm
Information for order placements
  • Brand
    Wilo
  • Product description
    TOP-Z 20/4
  • Net weight, approx. m
    3 kg
  • Article number
    2045520

Dimensions and dimensions drawings

TOP-Z

TOP-Z
TOP-Z

Wiring diagram

≤ P 90 W

≤ P 90 W

Mains connection 3~400 V, 50 Hz

3~230 V, 50 Hz (with optional switching plug 3~230 V)

internal protection against unacceptably high winding temperatures

Triggering:Internal interruption of a motor phase

Reset:Disconnect mains voltage, allow motor to cool down,

switch mains voltage back on again

≤ P 90 W

Ordering information

Information for order placements
  • Brand
    Wilo
  • Product description
    TOP-Z 20/4
  • EAN number
    4016322652779
  • Article number
    2045520
  • Gross weight, approx. m
    3.8 kg
  • Net weight, approx. m
    3 kg
  • Overall length L
    150.0 mm
  • Height without packaging H
    216 mm
  • Colour
    green/silver
  • Packaging property
    Transport packaging
  • Packaging type
    Cardboard box
  • Number per layer
    16
  • Width without packaging L
    140.0 mm
  • Minimum order quantity
    1
  • Pieces per pallet
    96

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Edition 2018-10
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Number of pages 4

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