Wilo PW BOOST INITIAL 250EA User manual

9 210 570-Ed.01 / 2022-04-Wilo

Wilo-PW BOOST INITIAL

PW BOOST INITIAL 250EA

PW BOOST INITIAL 330EA

PW BOOST INITIAL 600EA

Pioneering for You

en Installation and operating instructions

fr Notice de montage et de mise en service

zh  󲢀󵖼󲃁󳇄󱱓󵣫󳌅

ru  

󹮀󹮖󹭲󹭚󹬺󹮁󹬲󹮖󹭽󹭐󹬺󹮁󹮀󹮖󹮁 ar

en Installation and operating instructions 3

fr Notice de montage et de mise en service 17

zh 󲢀󵖼󲃁󳇄󱱓󵣫󳌅 

ru  

ar 󹮀󹮖󹭲󹭚󹬺󹮁󹬲󹮖󹭽󹭐󹬺󹮁󹮀󹮖󹮁 61

- 3 -

1. WARNING…………………………………………………………………………………………………………………… 4

2. APPLICATION …………………………………………………………………………………………………………… 5

3. SAFETY ……………………………………………………………………………………………………………………… 5

  …………………………………………………………………………………… 5

3.2 Danger in the event of non-observance of the safety instructions ………………… 5

3.3 Safety consciousness on the job ……………………………………………………………………… 6

3.4 Safety instructions for the operator ………………………………………………………………… 6

3.5 Safety instructions for installation and maintenance work ……………………………… 6

  …………………………… 7

3.7 Improper use ……………………………………………………………………………………………………… 7

4. STORAGE AND TRANSPORTATION …………………………………………………………………………… 7

5. WORKING CONDITIONS …………………………………………………………………………………………… 7

6. OVERALL DIMENSIONS ……………………………………………………………………………………………… 8

7. EXPLODED VIEW DRAWING ……………………………………………………………………………………… 9

8. TECHNICAL DATA ………………………………………………………………………………………………………10

9. CHARACTERISTIC CURVE …………………………………………………………………………………………10

10. FEATURES AND FUNCTIONS………………………………………………………………………………………11

11. PIPE ASSEMBLY AND CAUTION …………………………………………………………………………………12

12. INSTALLATION AND NOTES ………………………………………………………………………………………13

13. PREPARATION BEFORE COMMISSIONING …………………………………………………………………13

14. COMMISSIONING ………………………………………………………………………………………………………14

15. MAINTENANCE …………………………………………………………………………………………………………15

16. FAULTS, CAUSES AND REMEDIES ………………………………………………………………………………15

17. DISPOSAL …………………………………………………………………………………………………………………16

Table of contents

- 4 -

RCD

External power line diameter must be larger

than the controls power line.

SPA controls must be

grounded reliably

Residual current device

Fuse

Circuit breaker

1. WARNING

When installing and using this product, you must pay

attention to the following security issues.

1) The instructions must be read carefully and adhered

to during handling.

2) The pump is to be supplied by an isolating trans-

former or through a residual current device (RCD)

with a rated residual operating current not exceeding



3) A proper fuse must be installed in the electri-



should be selected according to the fuse, twice



on the rating plate.

4) All lead wires must be connected by a licensed electrician, according to local standards. The

motor must be grounded.

5) In order to prevent electric shock, children are not allowed to use the product without

adult supervision.

6) The power cable of the pump must not be buried in the ground. Position the cable so that

it cannot be destroyed, e.g. by lawnmowers.

7) In order to prevent electric shock, the damaged power cable must be replaced

immediately.

8) In order to prevent electric shock, do not use the extension wire to connect the power

source.



10) To shut down the pump, an all-pole switch that provides complete shutdown must be



CAUTION: The pump has a non-self-resetting thermal cut-out which, if tripped, must

be reset by disconnecting the power supply.

- 5 -

2. APPLICATION

The PW series is an automatic cold and hot water self-priming pump. It is an intelligent



induction switch. The intelligent controller can start or shut down the power supply in a



it from switching on/off frequently, blocking and overheating etc. It is suitable for use in

apartment buildings, automatic water-supply units for pressure boosting, as well as for



etc.

3. SAFETY

These operating instructions contain basic information which must be adhered to during

installation, operation and maintenance. For this reason, these operating instructions must,

without fail, be read by the service technician and the responsible specialist/operator before

installation and commissioning. It is not only the general safety instructions listed under the

main point “Safety” that must be adhered to, but also the special safety instructions with

danger symbols included under the following main points.

3.1 

-

cations for this work. The area of responsibility, terms of reference and monitoring of the

personnel are to be ensured by the operator. If the personnel are not in possession of the

necessary knowledge, they are to be trained and instructed. This can be accomplished, if

necessary, by the manufacturer of the product at the operator's request.

3.2 

Non-observance of the safety instructions can result in risk of injury to persons and damage

to the environment and the product/unit. Non-observance of the safety instructions results

in the loss of any claims for damages. In detail, non-observance can, for example, result in

the following risks:



• Damage to the environment due to leakage of hazardous materials

• Property damage

• Failure of important product/unit functions

• Failure of required maintenance and repair procedures

- 6 -

3.3 

The safety instructions included in these installation and operating instructions and the

existing national regulations for accident prevention together with any internal working,

operating and safety regulations of the operator are to be complied with.

3.4 

This appliance can be used by children aged from 8 years and above and persons with

reduced physical, sensory or mental capabilities or lack of experience and knowledge if they

have been given supervision or instructions concerning the use of the appliance in a safe

way and understand the hazards involved.

Children shall not play with the appliance. Cleaning and maintenance shall not be carried

out by children without supervision.

• If hot or cold components on the product/unit lead to hazards, local measures must be

taken to guard the components against touching.

• Guards protecting against touching moving components (such as the coupling) must not

be removed whilst the product is in operation.



must be led away so that no danger to persons or to the environment arises. National

statutory provisions are to be complied with.



• Danger from electrical current must be eliminated. Local directives or general directives

[e.g. IEC etc.] and instructions from local power supply companies must be adhered to.

3.5 

The operator must ensure that all installation and maintenance work is carried out by



study of the operating instructions. Work on the product/unit must only be carried out

when it is at a standstill. It is mandatory that the procedure described in the installation and

operating instructions for shutting down the product/unit be complied with. Immediately

on conclusion of the work, all safety and protective devices must be put back in position

and/or recommissioned.

- 7 -

3.6 



product/personnel and will make void the manufacturer’s declarations regarding safety.



Original spare parts and accessories authorised by the manufacturer ensure safety. The use

of other parts will absolve us of liability for consequential events.

3.7 

The operating safety of the supplied product is only guaranteed for conventional use

in accordance with Section 5 of the operating instructions. The limit values must on no



4. STORAGE AND TRANSPORTATION

1) Ambient temperature: -10 °C up to +50 °C,

Relative humidity: 85 %

2) When receiving the product, check that it has not been damaged during transport.

In the event of demage during transport take all necessary actions with the carrier within

the respective time limits.

3) If the product to be installed later, store it in a dry place and protect it against impacts

and external stresses (humidity, frost, etc.).

4) Handle the product with care so as not to damage the product before installation.

5) The product can also be used after 1.5 years storage if it remains in the packaging.

CAUTION: storage environment may cause damages.

5. WORKING CONDITIONS

The pump can be used continuously under the conditions below:

1) Fluid temperature not under 0 and not over +60 °C

2) Liquid pH rate between 6.5 and 8.5

3) Solid content not higher than 0.1%, granule not larger than 0.2 mm

4) Ambient temperature between 0 °C and 40 °C

5) Altitude less than 1000 m

6) Relative humidity less than 90%

- 8 -

6. OVERALL DIMENSIONS

TYPE 

L LI L2 W Wl W2 H Hl H2 DNA DNM

PW BOOST INITIAL

250EA 247 85 54 187 98 132 235 65 147 G1 G1

PW BOOST INITIAL

330EA 247 85 54 187 98 132 235 65 147 G1 G1

PW BOOST INITIAL

600EA 253 85 53 201 111 140 255 73 163 G1 G1

:

+

+

: 

/ /

'10

'1$

- 9 -

7. EXPLODED VIEW DRAWING

No.  No. 

1 Drainage plug 10 Pressure switch

2 Washer 11 Dust cap

3 Hexagon bolt 12 O-ring

4 Pump housing 13 Water injection plug

5 Ordinary flat key 14 Flow switch

6 Impeller 15 Flange plastic padding

7 External circlips 16 Inlet flange

8 Mechanical seal 17 Hexagon bolt

9 Motor

- 10 -

8. TECHNICAL DATA





PW BOOST INITIAL

250EA

PW BOOST INITIAL

330EA

PW BOOST INITIAL

600EA

Max. pressure (bar) 8 8 8

Max. suction head (m) 7 7 7

Pipe connection (mm) DN25 DN25 DN25

Rated head (m) * 12 16 25

Rated flow (m³/h) * 1 1 1.5

Noise (dB) 70 70 70

Power (W) 250 330 600

Frequency 50 Hz

Protection class IP44

Insulation class F

Voltage 220 - 230 V ( ± 6%)

* 

9. CHARACTERISTIC CURVE

The characteristic curves are based on the following:

The performance is based on the current speed of the standard motor.

Carrying out the

test by 20 ° C water without air.

The curves are suitable for pumping liquids (= 1 mm2/s, = 1 g/cm3).

4. The pump operation shall refer to the performance region described by the thickened

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