Stuart Turner Mainboost MJ3 VM Guida

- 1 –

Read this manual carefully before commencing installation.

This manual covers all Mainsboost steel vessels for vertical and horizontal units.

Mainsboost Charger Pump MJ3 – Vessel Mounted

Previously named Mainsboost Plus (both vertical & horizontal variants)

Mainsboost Charger Installation,

Operation & Maintenance Instructions

Please leave this instruction booklet with the home owner as it contains

important warranty, maintenance and safety information

CE compliant product

WARRANTY

MAINSBOOST

- 2 –

PRODUCT DESCRIPTION

Mainsboost Charger MJ3 consists of three key assemblies, the Mainsboost vessel,

Charger MJ3 pump and upstream line-in kit.

APPLICATION

Mainsboost Charger MJ3 is designed to offer stored clean, potable cold water under

pressure for all domestic or small commercial applications where mains water is

insufficient to offer consistent and reliable water services.

Installation parameters must not exceed the values given in the technical

specifications.

STORAGE

If this product is not to be installed immediately on receipt, ensure that it is stored in a

dry, frost and vibration free location in its original packaging.

CONTENTS Page

Checklist ...........................................................5

Introduction .........................................................9

Important Facts – read before commencing installation ......................10

Location ............................................................11

Terminology .........................................................12

Configuration ........................................................13

Installation ..........................................................15

Electrical ...........................................................23

Commissioning ......................................................25

Technical Specification ................................................28

Trouble Shooting .....................................................30

Warranty ...........................................................31

- 3 –

WARNINGS:

zMainsboost Charger MJ3 system must not be used for

any other application without the written consent of

Stuart Turner Limited.

zThis 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 instruction concerning use of the

appliance in a safe way and understand the hazards

involved.

zChildren shall not play with the appliance.

zCleaning and user maintenance shall not be made by

children without supervision.

zMaximum head (closed valve) 43 metres.

zThe motor casing can become very hot under normal

operating conditions. Care must be taken to ensure it

cannot be touched during operation.

zThe electrical installation must be carried out

in accordance with the current national electrical

regulations.

zThe electrical installation must be installed by a

qualified person.

zIn the interests of electrical safety a 30 mA residual

current device (R.C.D. not supplied) should be

installed in the supply circuit. This may be part of a

consumer unit or a separate unit.

zBefore starting work on the electrical supply ensure

power supply is isolated.

zDO NOT allow the supply cord to contact hot

surfaces, including the motor shell, pump body or

pipework. The cord should be safely routed and

secured by cable clips.

- 4 –

zThis appliance must be earthed via the supply cord,

which must be correctly connected to the earth

point located in the terminal box.

zThe supply cord and internal wiring within the

terminal box are routed and secured to ensure

compliance with the electrical standard

EN 60335–1. It is essential that prior to any

disturbance of this internal wiring, all cable routing

and securing details are carefully noted to ensure

re-assembly to the same factory pattern is always

maintained.

zIf the supply cord is to be changed or is damaged, it

must be replaced with a special cord assembly

available from Stuart Turner or one of their approved

repairers.

Please read installation details carefully as they are intended to ensure this product

provides long, trouble free service. Failure to install the unit in accordance with the

installation instructions will lead to invalidation of the warranty. These instructions

must be left with the product.

- 5 –

CHECKLIST

Item Description Qty Item Description Qty

Package

1 Monobloc unit 1 Package

21Mainsboost vessel 1

2 ¼ “ BSP Pressure gauge 2

Package

1 Pump 1

3 Lever isolating ball valve 1 2 Manifold Assy 1

4Mainsboost vessel

connector fitting 1 3 Hose 2

522/28mm compression

adaptor 2 4 Sealing washer 2

5Pump mounting

bolt assemby 1 set

6Pump mounting

bolt assembly 1 set

Your product may vary slightly from the illustrations above.

Mainsboost Charger MJ3 (Vertical) + Mainsboost Monobloc 22/28mm ULK

IMPORTANT: Your Mainsboost Charger MJ3 system will be delivered in a minimum of

three boxes on one pallet. Please check the contents within 24 hours of receipt and

if any component is damaged, please contact Stuart Turner Ltd immediately.

Package 2

Mainsboost vessel

Fig. 3

Package 1a

Monobloc 22/28mm Upstream line-in kit

Fig1a

Package 3

MJ3 pump

Fig. 2 4

- 6 –

CHECKLIST

Item Description Qty Item Description Qty

Package

1 ¼ “ BSP pressure gauge 1 Package

21Mainsboost vessel 1

2 Lever isolating ball valve 1

Package

1 Pump 1

3Mainsboost vessel

connector fitting 1 2 Manifold Assy 1

46 bar pressure regulating

valve 1 3 Hose 2

5 ¼ x ½ “ BSP Brass bush 1 4 Sealing washer 2

6 Y pattern inline strainer 1 5 Pump mounting

bolt assy 1 set

7Double check valve 1 6 Pump mounting

bolt assy 1 set

8 ¼ “ BSP Pressure gauge 1

Your product may vary slightly from the illustrations above.

Mainsboost Charger MJ3 (Vertical) + 35/42/54mm ULK

IMPORTANT: Your Mainsboost Charger MJ3 system will be delivered in a minimum of

three boxes on one pallet. Please check the contents within 24 hours of receipt and

if any component is damaged, please contact Stuart Turner Ltd immediately.

Package 2

Mainsboost vessel

Fig. 3

Package 1b

Upstream line-in kit 35/42/54mm

Fig. 1b

Package 3

MJ3 pump

Fig. 2

- 7 –

CHECKLIST

Mainsboost Charger MJ3 (Horizontal) + Mainsboost Monobloc 22/28mm ULK

(compatible with MB 200SH and MB 250SH vessels only)

Your product may vary slightly from the illustrations above.

Item Description Qty Item Description Qty

Package

1 Monobloc unit 1 Package

1Mainsboost vessel 1

2 ¼ “ BSP Pressure gauge 2 2 Mounting cradle 2

3 Lever isolating ball valve 1

Package

1 Pump 1

4Mainsboost vessel

connector fitting 1 2 Sealing washers 2

522/28mm compression

adaptor 2 3 Manifold assembly 1

4 Hoses 2

5Pump mounting

bolt assy 1 set

6MJ3 HM mounting

bracket 1

Package 2

Vessel/Mounting Cradle

Fig. 3

Package 3

MJ3 pump

Fig. 2

Package 1a

Monobloc 22/28mm Upstream line-in kit

Fig1a

- 8 –

CHECKLIST

Mainsboost Charger MJ3 (Horizontal) + 35/42/54mm ULK

(compatible with MB 200SH and MB 250SH vessels only)

Your product may vary slightly from the illustrations above.

Item Description Qty Item Description Qty

Package

1 ¼ “ BSP pressure gauge 1 Package

1Mainsboost vessel 1

2 Lever isolating ball valve 1 2 Mounting cradle 2

3Mainsboost vessel

connector fitting 1

Package

1 Pump 1

46 bar pressure regulating

valve 1 2 Sealing washers 2

5 ¼ x ½ “ BSP Brass bush 1 3 Manifold assembly 1

6 Y pattern inline strainer 1 4 Hoses 2

7Double check valve 1 5 Pump mounting

bolt assy 1 set

8 ¼ “ BSP Pressure gauge 1 6 MJ3 HM mounting

bracket 1

Package 1b

Upstream line-in kit 35/42/54mm

Fig. 1b

Package 2

Vessel/Mounting Cradle

Fig. 3

Package 3

MJ3 pump

Fig. 2

- 9 –

1 INTRODUCTION

1.1 Congratulations on buying a Mainsboost Charger MJ3 system, designed to

offer consistent and reliable water services throughout the property.

1.2 Patents, Trademarks & Trade Names:

‘Mainsboost’ ‘Mainsboost Plus’ and ‘Mainsboost Charger’ are registered

Trademarks of Stuart Turner Ltd.

1.3 How the Mainsboost Charger MJ3 System works:

The Mainsboost Charger MJ3 vessel stores water from the rising main in a

sealed water chamber, separated from the air space by a rubber diaphragm

and pressurised to an optimum setting. When water is drawn off by

downstream services, the water from the mains is supplemented by the

water from the Mainsboost Charger MJ3 unit to provide a balanced supply at

consistent pressure to downstream services.

The Mainsboost Charger MJ3 pipework manifold incorporates a unique ‘green

energy’ bypass. If the incoming mains water supply delivers more than

12 l/min this bypass should be left open to allow any additional flow rate to

pass directly into the Mainsboost vessel via the integral non-return valve.

If the incoming flow rate is less that 12 l/min the bypass valve should

be left closed in order to ensure optimum efficiency of the Charger MJ3 pump.

- 10 –

2 IMPORTANT FACTS READ BEFORE COMMENCING INSTALLATION

A Commissioning

2.11 Ensure the pump is primed as described in the priming section before

starting, damage to the shaft seal will result otherwise. See Section 8.16 –

Commissioning.

B Water temperature

This unit is designed for cold water applications only which should not exceed the

following values:

2.12 The maximum allowable water temperature is 35 oC.

2.13 The minimum allowable water temperature is 4 oC.

C Pipework – General

2.14 Secure pipework: Ensure pipework to and from the Mainsboost Charger MJ3

is independently supported & clipped to prevent forces being transferred to

inlet and outlet branches of pump. Flexible hoses supplied must be used.

2.15 Flux: Solder joints must be completed and flux residues removed prior to

pump installation (flux damage will void any warranty).

2.16 Pipework design: Care should be taken in the design of pipework runs to

minimize the risk of air locks e.g. use drawn bends rather than 90obends.

D Plumbing Installation Regulations

2.17 The plumbing installation must comply with the current water and building

regulations.

2.18 The plumbing installation must be installed by a qualified person.

E Mainsboost vessel

2.19 Ensure the Mainsboost vessel is installed correctly before operating the unit,

to avoid damage to the pumps/controls.

Do not attempt to dismantle the Mainsboost vessel

The Mainsboost vessel is pressurised to a pre-set level at the factory.

See Section 8.12 – Commissioning for details.

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