Helix FIRST V 202-5/16/E/S/400-50 | Wilo

Helix FIRST V 202-5/16/E/S/400-50

Article number : 4201016

Product data
Product description	Helix FIRST V 202-5/16/E/S/400-50

Hydraulic data
Minimum efficiency index (MEI)	≥0,7
Maximum inlet pressure p inl	10 bar
Maximum operating pressure PN	16 bar
Discharge port	G 1
Min. fluid temperature T_min	-20 °C
Max. fluid temperature T_max	120 °C
Min. ambient temperature T_min	-15 °C
Max. ambient temperature T_max	50 °C

Motor data
Voltage tolerance	±10 %
Rated power P₂	0,37 kW
Motor efficiency class	IE3
Rated current I_N	0,84 A
Rated speed n	2900 1/min
Motor efficiency 50% η_M50%	69,7 %
Motor efficiency 75% η_M75%	73,4 %
Motor efficiency 100% η_M100%	73,8 %
Insulation class	F
Protection class motor	IP55

Materials
Pump housing	Grey cast iron
Impeller	Stainless steel
Mechanical seal	BQ1EGG
Gasket material	EPDM
Stage chamber material	Stainless steel

Installation dimensions
Pipe connection on the suction side DNs	G 1
Pipe connection on the discharge side DNd	G 1

Helix FIRST V 2-4, PN 16

Dimensions DN2	G 1
wss_dimension_L4	100
Dimensions DN1	38,5
Dimensions DN1	38,5
Dimensions L2	102 mm
Dimensions L1	102
Dimensions H	513
Dimensions H1	98
Dimensions H2	289
Dimensions H3	50
Dimensions H4	307,5
Dimensions DN1	G 1
Pump flange dimensions ØD	47 mm
Dimensions Ød	58
Pump pipe connection pressure side B1	38,5 mm
Pump flange dimensions Ø k	75 mm
Number of drilled holes n	2
Dimensions dL	11 mm
Motor diameter ØM	138 mm
Motor diameter ØM	107 mm
Motor diameter X	107 mm

Product data
Brand	Wilo
Product description	Helix FIRST V 202-5/16/E/S/400-50
Article number	4201016
EAN number	4048482589916
Colour	green/silver
Minimum order quantity	1
Date of sales availability	2015-09-01

Packaging
Packaging type	Cardboard box
Packaging property	Transport packaging
Pieces per pallet	1
Number per layer	1

Dimension, weight
Length with packaging	800 mm
Length L	204 mm
Height with packaging	370 mm
Height H	513 mm
Width with packaging	400 mm
Width W	212 mm
Gross weight, approx. m	21,7 kg
Net weight, approx. m	18,2 kg

Highly efficient high-pressure multistage centrifugal pump in vertical design with in-line connections.

The non self-priming high-pressure multistage centrifugal pump has a particularly compact overall design. The pump shaft and the motor shaft of the IEC standard motor are connected by means of a clamp coupling. A separate lantern roller bearing ensures optimum admission of axial thrusts.

Intermediate bearings in the hydraulics and corrosion-resistant shaft due to stainless steel sleeve ensure a long service life.

The pump housing and lantern are cataphoretic-coated.

Special, permanently attached lifting eyes enable easy pump installation.

The pump is suitable for water distribution and pressure boosting, industrial recirculation systems, process water and closed cooling circuits. It can also be used in fire extinguishing systems, washing systems as well as for irrigation.

Special features/product advantages

Efficiency-optimised, laser-welded 2D/3D hydraulics
Corrosion-resistant impellers, guide vanes and stage housings
Flow and degassing-optimised hydraulic parts
Reinforced pump housing, flow and NPSH optimised
Space-saving and easy maintenance due to the compact design
Particularly sturdy coupling guard

Scope of delivery

Wilo-Helix FIRST V high-pressure multistage centrifugal pump
Installation and operating instructions
PN16 version with oval flanges: Cast iron counter flanges with the corresponding screws, nuts and gaskets

Design notes

Motor protection is to be provided on request or onsite.
In its standard position, the terminal box is aligned with the suction flange, but this can be changed if necessary.
The Wilo-Helix FIRST V is equipped with a standard mechanical seal
For pump versions PN16, PN25 and Pmax = 30 bar, round counter flanges in cast iron or stainless steel, screws, nuts and gaskets are available as accessories.
Bypass sets are available as accessories.
The Wilo-Helix V in ATEX version upon request

Operating data

Product data
Min. fluid temperature T_min	-20 °C
Max. fluid temperature T_max	120 °C
Min. ambient temperature T_min	-15 °C
Max. ambient temperature T_max	50 °C
Maximum operating pressure PN	16 bar
Maximum inlet pressure p inl	10 bar
Minimum efficiency index (MEI)	≥0,7

Motor data
Voltage tolerance	±10 %
Rated power P₂	0,37 kW
Motor efficiency class	IE3
Rated current I_N	0,84 A
Rated speed n	2900 1/min
Motor efficiency 50% η_M50%	69,7 %
Motor efficiency 75% η_M75%	73,4 %
Motor efficiency 100% η_M100%	73,8 %
Insulation class	F
Protection class	IP55

Materials
Pump housing	Grey cast iron
Impeller	Stainless steel
Shaft seal	BQ1EGG
Gasket material	EPDM
Stage chamber material	Stainless steel

Installation dimensions
Pipe connection on the suction side DNs	G 1
Pipe connection on the discharge side DNd	G 1

Ordering information
Brand	Wilo
Product description	Helix FIRST V 202-5/16/E/S/400-50
Net weight, approx. m	18,2 kg
Article number	4201016

Installation and operating instructions

Wilo-Helix V, .. FIRST V, ..2.0-VE 2-4-6-10-16

Article Number	4143727
Edition	2023-03
Number of pages	24
Language	en

PDF (5 MB)

Wilo-Helix V/ FIRST V 22-36-52

Article Number	4120943
Edition	1603
Number of pages	1
Language	en, mk, uk

ZIP (111 MB)

Wilo-Helix V, FIRST V, 2.0-VE 22-36-52

Article Number	4120943
Edition	02/2022
Number of pages	28
Language	en

PDF (7 MB)

Group Statement

Group Statement REACH

Edition	2021-05
Number of pages	5
Language	language neutral

PDF (287 KB)

In inlet mode (5)
Counter flange (stainless steel)
Counter flange (stainless steel)	Stainless steel counter flange (oval, 2 piece), PN16/DN25	4016168
Counter flange (stainless steel)	Stainless steel threaded flange (female thread), round, for connecting pumps to the system pipework. Scope of delivery 2 counter flanges, screws and nuts
Baseplate
Baseplate	Base plate	4157154
Baseplate	Baseplate for assembly on concrete pillar. Scope of delivery 1 baseplate 4 M12 bolts (including nuts and washers) for pump fastening 4 M10 bolts (including nuts and washers) for pump fastening
Shut-off valve
Shut-off valve	Ball valve Rp 1	2663980
Shut-off valve	Ball valve with lever for easy and safe installation. Certified suitability in accordance with CE for drinking water applications (e.g. in accordance with DIN 1988). Ball valves DVGW-certified up to Rp 2. Scope of delivery Ball valve with lever grip 5
Non-return valve
Non-return valve	Non-return valve RV/S R 1	2660842
Non-return valve	Non-return valve without screwed connections for use in water supply applications, DVGW-certified. Option Screwed connection for non-return valve made of brass (separate accessories)
Screwed connection for non-return valve
Screwed connection for non-return valve	Screwed connection for non-return valve DN 25	2660509
Screwed connection for non-return valve	Kit is comprised of 2 union nuts and 2 threaded nozzles made of brass and 2 seals. For valves with flat-sealing male thread.
Level control with fault signal (4)
Float switch WAO
Float switch WAO	Float switch WAO 65, 10 m cable	2006027
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
	Float switch WAO 65, 20 m cable	2004429
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
	Float switch WAO 65, 30 m cable	2004430
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
	Float switch WAO 65, 5 m cable	503211595
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
Level control without fault signal (4)
Float switch WAO
Float switch WAO	Float switch WAO 65, 10 m cable	2006027
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
	Float switch WAO 65, 20 m cable	2004429
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
	Float switch WAO 65, 30 m cable	2004430
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
	Float switch WAO 65, 5 m cable	503211595
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
Pressure control with fault signal (2)
Wilo-EFC
Wilo-EFC	EFC0.37 3x380-480V 50/60Hz IP55	2193429
Wilo-EFC	Stand-alone frequency converter for fixed-speed pumps for all applications requiring variable speed, especially in the heating, air conditioning and pressure boosting sectors. Special features/Product advantages Compact design with energy-saving cooling concept to reduce heat losses Integrated energy-efficient harmonic reduction and additional energy-saving function in the partial load range of the pump Versatile possibilities for use in pump applications thanks to several connection options and different control modes Easy commissioning thanks to intuitive assistant with graphical user interface Functions Full motor protection with PTC sensor evaluation Emergency operation with reduced speed in the event of excessive temperature, undervoltage or malfunction of a mains phase Mains phase failure monitoring Real time clock for time-based control Separate counters for frequency converter and motor operating hours, kWh counter, fault message memory Innovative function (integrated electronic operating data diary) Standard cascade regulator, dry-running protection, protection against low or no flow rate Energy-saving mode with standby function 4 internal PID controllers Smart Logic function with 10 action options for simple drive tasks PM motor and synchronous reluctance motors can be operated using a device Connections Inputs 2x analogue, 0-10 V / 0-20 mA switchable, scalable and invertible 4x digital, 24 V, selectable logic H- or L-active, programmable Outputs 1x analogue, 0-10 V / 4-20 mA, programmable and scalable Terminal 2x digital, 24 V, logic can be used selectively as input or output. Relay 1x 240 V AC, both relays potential-free, programmable and/or 1x 400 V AC drop-out delayed Auxiliary voltage 1x 10 V DC, for setpoint potentiometer 1 kΩ and motor protection PTC thermistor 2x 24 V DC, for wiring the digital inputs and for supplying active signal transmitters for the actual value Communication Modbus Options External communication via module (optional): Profibus, DeviceNet, ProfiNet, Ethernet, Modbus, DU/DT filter, sine filter Scope of delivery Stand-alone frequency converter Installation and operating instructions
Sensor kit
Sensor kit	Sensor kit	2501886
Sensor kit	For mounting an automatic single- or multi-pump system with pressure-dependent operation. The pressure sensor measures the applied pressure and delivers signals for switchgear with a 4 – 20 mA input. Notice Take care to ensure that a non-return valve is placed between pump and kit! Scope of delivery Red brass and/or brass fittings Diaphragm pressure vessel 8 l, PN 16 Stainless steel pressure sensor 4-20 mA Pressure gauge Ball valve Installation and operating instructions

Bypass line (1)
Bypass line
Bypass line	Bypass line for Helix and Medana CV1-L series	4231006
Bypass line	The use of bypass lines is always appropriate when the fluid contains large amounts of air or oxygen components or otherwise tends to emit gases. As a result of the recirculation between pump head and pump suction side, an accumulation of air and/or oxygen is permanently discharged in the area of the mechanical shaft seal. Typical areas of application are e.g. pumping condensate or pressure boosting with pumping from atmospherically ventilated break tanks. Scope of delivery The set includes all components required for constructing the complete bypass line.
Fittings (2)
Shut-off valve
Shut-off valve	Ball valve Rp 1	2663980
Shut-off valve	Ball valve with lever for easy and safe installation. Certified suitability in accordance with CE for drinking water applications (e.g. in accordance with DIN 1988). Ball valves DVGW-certified up to Rp 2. Scope of delivery Ball valve with lever grip 5
Non-return valve
Non-return valve	Non-return valve RV/S R 1	2660842
Non-return valve	Non-return valve without screwed connections for use in water supply applications, DVGW-certified. Option Screwed connection for non-return valve made of brass (separate accessories)
Pipe installation (1)
Counter flange (stainless steel)
Counter flange (stainless steel)	Stainless steel counter flange (oval, 2 piece), PN16/DN25	4016168
Counter flange (stainless steel)	Stainless steel threaded flange (female thread), round, for connecting pumps to the system pipework. Scope of delivery 2 counter flanges, screws and nuts
Valves/accessories (1)
Screwed connection for non-return valve
Screwed connection for non-return valve	Screwed connection for non-return valve DN 25	2660509
Screwed connection for non-return valve	Kit is comprised of 2 union nuts and 2 threaded nozzles made of brass and 2 seals. For valves with flat-sealing male thread.
Wall fixation/installation on a base (1)
Baseplate
Baseplate	Base plate	4157154
Baseplate	Baseplate for assembly on concrete pillar. Scope of delivery 1 baseplate 4 M12 bolts (including nuts and washers) for pump fastening 4 M10 bolts (including nuts and washers) for pump fastening

Pump control (1)
Wilo-EFC
Wilo-EFC	EFC0.37 3x380-480V 50/60Hz IP55	2193429
Wilo-EFC	Stand-alone frequency converter for fixed-speed pumps for all applications requiring variable speed, especially in the heating, air conditioning and pressure boosting sectors. Special features/Product advantages Compact design with energy-saving cooling concept to reduce heat losses Integrated energy-efficient harmonic reduction and additional energy-saving function in the partial load range of the pump Versatile possibilities for use in pump applications thanks to several connection options and different control modes Easy commissioning thanks to intuitive assistant with graphical user interface Functions Full motor protection with PTC sensor evaluation Emergency operation with reduced speed in the event of excessive temperature, undervoltage or malfunction of a mains phase Mains phase failure monitoring Real time clock for time-based control Separate counters for frequency converter and motor operating hours, kWh counter, fault message memory Innovative function (integrated electronic operating data diary) Standard cascade regulator, dry-running protection, protection against low or no flow rate Energy-saving mode with standby function 4 internal PID controllers Smart Logic function with 10 action options for simple drive tasks PM motor and synchronous reluctance motors can be operated using a device Connections Inputs 2x analogue, 0-10 V / 0-20 mA switchable, scalable and invertible 4x digital, 24 V, selectable logic H- or L-active, programmable Outputs 1x analogue, 0-10 V / 4-20 mA, programmable and scalable Terminal 2x digital, 24 V, logic can be used selectively as input or output. Relay 1x 240 V AC, both relays potential-free, programmable and/or 1x 400 V AC drop-out delayed Auxiliary voltage 1x 10 V DC, for setpoint potentiometer 1 kΩ and motor protection PTC thermistor 2x 24 V DC, for wiring the digital inputs and for supplying active signal transmitters for the actual value Communication Modbus Options External communication via module (optional): Profibus, DeviceNet, ProfiNet, Ethernet, Modbus, DU/DT filter, sine filter Scope of delivery Stand-alone frequency converter Installation and operating instructions
Pump control/accessories (4)
Output filter EFC (150-500 m cable length)
Output filter EFC (150-500 m cable length)	2.4 A sin IP54 Wilo-EFC filter	6084559
	The dU/dt and sine wave output filters are recommended for strengthening motor protection in applications with short motor cables, old generation motors, frequent braking or aggressive environments. Special features/product advantages: dU/dt filter: The requirements of IEC60034-17* (general purpose motors) are met up to a cable length of 100 m (shielded/unshielded). Above this cable length, the risk of “double pulsing” increases Slightly reduced motor bearing load, mainly for motors with high power output Prevents mains feedback. Does not change the emission class. Does not allow longer motor cables as intended for the frequency converter’s built-in RFI filter Max. motor cable length from 100 m – 150 m. With guaranteed EMC performance: 150 m shielded. Without guaranteed EMC performance: 150 m unshielded Does not eliminate the acoustic switching noise of the motor Sine filter: Ensures a sinusoidal phase-phase motor terminal voltage. Meets the requirements of IEC-60034-17* and NEMA-MG1 for general purpose motors with cables up to 500 m (1 km for size D and above). Reduces bearing currents caused by circulation currents. Does not reduce common mode currents (ripple currents). Prevents mains feedback. Does not change the emission class. Does not allow longer motor cables as intended for the frequency converter’s built-in RFI filter. With guaranteed EMC performance: 150 m shielded and 300 m unshielded (only conducted emissions). Without guaranteed EMC performance: up to 500 m (1 km for size D and above). Eliminates acoustic switching noises from the motor caused by magnetostriction Scope of delivery: dU/dt and sine output filters Installation and operating instructions
	2.5 A sin IP00 Wilo-EFC filter	6084574
	The dU/dt and sine wave output filters are recommended for strengthening motor protection in applications with short motor cables, old generation motors, frequent braking or aggressive environments. Special features/product advantages: dU/dt filter: The requirements of IEC60034-17* (general purpose motors) are met up to a cable length of 100 m (shielded/unshielded). Above this cable length, the risk of “double pulsing” increases Slightly reduced motor bearing load, mainly for motors with high power output Prevents mains feedback. Does not change the emission class. Does not allow longer motor cables as intended for the frequency converter’s built-in RFI filter Max. motor cable length from 100 m – 150 m. With guaranteed EMC performance: 150 m shielded. Without guaranteed EMC performance: 150 m unshielded Does not eliminate the acoustic switching noise of the motor Sine filter: Ensures a sinusoidal phase-phase motor terminal voltage. Meets the requirements of IEC-60034-17* and NEMA-MG1 for general purpose motors with cables up to 500 m (1 km for size D and above). Reduces bearing currents caused by circulation currents. Does not reduce common mode currents (ripple currents). Prevents mains feedback. Does not change the emission class. Does not allow longer motor cables as intended for the frequency converter’s built-in RFI filter. With guaranteed EMC performance: 150 m shielded and 300 m unshielded (only conducted emissions). Without guaranteed EMC performance: up to 500 m (1 km for size D and above). Eliminates acoustic switching noises from the motor caused by magnetostriction Scope of delivery: dU/dt and sine output filters Installation and operating instructions
	2.5 A sin IP20 Wilo-EFC filter	6084900
	The dU/dt and sine wave output filters are recommended for strengthening motor protection in applications with short motor cables, old generation motors, frequent braking or aggressive environments. Special features/product advantages: dU/dt filter: The requirements of IEC60034-17* (general purpose motors) are met up to a cable length of 100 m (shielded/unshielded). Above this cable length, the risk of “double pulsing” increases Slightly reduced motor bearing load, mainly for motors with high power output Prevents mains feedback. Does not change the emission class. Does not allow longer motor cables as intended for the frequency converter’s built-in RFI filter Max. motor cable length from 100 m – 150 m. With guaranteed EMC performance: 150 m shielded. Without guaranteed EMC performance: 150 m unshielded Does not eliminate the acoustic switching noise of the motor Sine filter: Ensures a sinusoidal phase-phase motor terminal voltage. Meets the requirements of IEC-60034-17* and NEMA-MG1 for general purpose motors with cables up to 500 m (1 km for size D and above). Reduces bearing currents caused by circulation currents. Does not reduce common mode currents (ripple currents). Prevents mains feedback. Does not change the emission class. Does not allow longer motor cables as intended for the frequency converter’s built-in RFI filter. With guaranteed EMC performance: 150 m shielded and 300 m unshielded (only conducted emissions). Without guaranteed EMC performance: up to 500 m (1 km for size D and above). Eliminates acoustic switching noises from the motor caused by magnetostriction Scope of delivery: dU/dt and sine output filters Installation and operating instructions
Sensor card EFC
Sensor card EFC	Sensor Input Card MCB Wilo-EFC	6084915
Sensor card EFC
Pump control/interface module (5)
IF Modules EFC
IF Modules EFC	Profibus DP MCA Wilo-EFC	2193451
	Plug-in module on the Wilo-EFC frequency converter – Profibus DP operates the frequency converter via fieldbus and can cut system costs.
	DeviceNet MCA Wilo-EFC	2193452
	Plug-in module on the Wilo-EFC frequency converter – DeviceNet provides key capabilities to effectively decide which information is required when.
	Profinet MCA Wilo-EFC	2193453
	Plug-in module on Wilo-EFC frequency converter – Profinet permits Ethernet access.
	Ethernet/IP MCA Wilo-EFC	2193454
	Plug-in module on the Wilo-EFC frequency converter – EtherNet/IP is based on state-of-the-art technologies available for industrial use and meets even the most complex requirements.
	Modbus TCP MCA Wilo-EFC	2193455
	Plug-in module on the Wilo-EFC frequency converter – Modbus TCP features elements including an integrated webserver for remote diagnostics and reading out of basic operating parameters.
Pressure control (6)
Pressure sensor for systems
Pressure sensor for systems	Pressure sensor, 0 - 6 bar	2550660
	Signal transmitter for differential pressure-sensitive infinitely variable speed control. Note Take care to ensure that a non-return valve is placed between pump and sensor. Further maintenance valves and a diaphragm pressure vessel are required for error-free functioning. Scope of delivery Pressure sensor (factory-calibrated) Plug
	Pressure sensor, 0 - 10 bar	2550661
	Signal transmitter for differential pressure-sensitive infinitely variable speed control. Note Take care to ensure that a non-return valve is placed between pump and sensor. Further maintenance valves and a diaphragm pressure vessel are required for error-free functioning. Scope of delivery Pressure sensor (factory-calibrated) Plug
	Pressure sensor, 0 - 16 bar	2550662
	Signal transmitter for differential pressure-sensitive infinitely variable speed control. Note Take care to ensure that a non-return valve is placed between pump and sensor. Further maintenance valves and a diaphragm pressure vessel are required for error-free functioning. Scope of delivery Pressure sensor (factory-calibrated) Plug
	Pressure sensor, 0 - 25 bar	2550663
	Signal transmitter for differential pressure-sensitive infinitely variable speed control. Note Take care to ensure that a non-return valve is placed between pump and sensor. Further maintenance valves and a diaphragm pressure vessel are required for error-free functioning. Scope of delivery Pressure sensor (factory-calibrated) Plug
	Pressure sensor, 0 - 40 bar	2550664
	Signal transmitter for differential pressure-sensitive infinitely variable speed control. Note Take care to ensure that a non-return valve is placed between pump and sensor. Further maintenance valves and a diaphragm pressure vessel are required for error-free functioning. Scope of delivery Pressure sensor (factory-calibrated) Plug
Sensor kit
Sensor kit	Sensor kit	2501886
Sensor kit	For mounting an automatic single- or multi-pump system with pressure-dependent operation. The pressure sensor measures the applied pressure and delivers signals for switchgear with a 4 – 20 mA input. Notice Take care to ensure that a non-return valve is placed between pump and kit! Scope of delivery Red brass and/or brass fittings Diaphragm pressure vessel 8 l, PN 16 Stainless steel pressure sensor 4-20 mA Pressure gauge Ball valve Installation and operating instructions
Level control (13)
Float switch WA
Float switch WA	Float switch WA65 with 5 m cable	503211390
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up ON / down OFF
	Float switch WA65 with 10 m cable	503211893
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up ON / down OFF
	Float switch WA65 with 20 m cable	2004431
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up ON / down OFF
	Float switch WA65 with 30 m cable	2004432
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up ON / down OFF
	Float switch WA KR1 S with 5 m cable	6082806
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up ON / down OFF
	Float switch WA KR1 S with 10 m cable	6082807
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up ON / down OFF
	Float switch WA65 (PSN-X) with 20 m cable	6088843
	As a signal transmitter for the system switching, depending on the fill level of an open tank or a cistern. Switching points: up ON/down OFF with switching contacts NO/COM/NC
	Float switch WA65 (PSN-X) with 10 m cable	6088844
	As a signal transmitter for the system switching, depending on the fill level of an open tank or a cistern. Switching points: up ON/down OFF with switching contacts NO/COM/NC
	Float switch WA65 (PSN-X) with 5 m cable	6088845
	As a signal transmitter for the system switching, depending on the fill level of an open tank or a cistern. Switching points: up ON/down OFF with switching contacts NO/COM/NC
Float switch WAO
Float switch WAO	Float switch WAO 65, 5 m cable	503211595
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
	Float switch WAO 65, 10 m cable	2006027
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
	Float switch WAO 65, 20 m cable	2004429
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
	Float switch WAO 65, 30 m cable	2004430
	As a signal transmitter for the system switching, depending on the level of an open container or a cistern. Switching points: up OFF, down ON
Motor protection (1)
PTC thermistor tripping unit
PTC thermistor tripping unit	PTC thermistor tripping unit	509275993
PTC thermistor tripping unit	PTC thermistor triggering relay for switch cabinet installation (1 device per motor required). The thermistor overload relays monitor motors which are equipped with PTC thermistor temperature sensors. The temperature sensors are installed in the windings of the motors and measure the heating up of the motor directly. This enables direct monitoring and evaluation of various operating conditions. A collective fault signal (SSM) is possible with corresponding wiring in the switch cabinet.

Helix FIRST V 202-5/16/E/S/400-50

Helix FIRST V 2-4, PN 16

Installation and operating instructions

Wilo-Helix V, .. FIRST V, ..2.0-VE 2-4-6-10-16

Wilo-Helix V/ FIRST V 22-36-52

Wilo-Helix V, FIRST V, 2.0-VE 22-36-52

Group Statement

Group Statement REACH

In inlet mode (5)

Counter flange (stainless steel)

Counter flange (stainless steel)

Baseplate

Baseplate

Shut-off valve

Shut-off valve

Non-return valve

Non-return valve

Screwed connection for non-return valve

Screwed connection for non-return valve

Level control with fault signal (4)

Float switch WAO

Float switch WAO

Level control without fault signal (4)

Float switch WAO

Float switch WAO

Pressure control with fault signal (2)

Wilo-EFC

Wilo-EFC

Sensor kit

Sensor kit

Bypass line (1)

Bypass line

Bypass line

Fittings (2)

Shut-off valve

Shut-off valve

Non-return valve

Non-return valve

Pipe installation (1)

Counter flange (stainless steel)

Counter flange (stainless steel)

Valves/accessories (1)

Screwed connection for non-return valve

Screwed connection for non-return valve

Wall fixation/installation on a base (1)

Baseplate

Baseplate

Pump control (1)

Wilo-EFC

Wilo-EFC

Pump control/accessories (4)

Output filter EFC (150-500 m cable length)

Output filter EFC (150-500 m cable length)

Sensor card EFC

Sensor card EFC

Pump control/interface module (5)

IF Modules EFC

IF Modules EFC

Pressure control (6)

Pressure sensor for systems

Pressure sensor for systems

Sensor kit

Sensor kit

Level control (13)

Float switch WA

Float switch WA

Float switch WAO

Float switch WAO

Motor protection (1)

PTC thermistor tripping unit

PTC thermistor tripping unit