Stuart Turner MAINSBOOST VariQ Guida

MAINSBOOST

VariQ

Installation, Operation & Maintenance

Instructions

Please leave this instruction booklet with the end user as it contains

important warranty, maintenance and safety information

Read this manual carefully before commencing installation.

This manual covers the following products:

Mainsboost

VariQ

Pt. No. 47322

CE c om pl i ant pr o duc t

Cont ...

- 2

PRODUCT DESCRIPTION

Electric motor driven centrifugal pump complete with an automatic control system,

consisting of pressure transducer pressure vessel and electronic control.

APPLICATION

The Mainsboost VariQ is designed for pressure boosting applications in vented stored,

cold, clean water systems, where under gravity, no flow is available and can be used

in systems where either a positive or negative head exists. Inlet pressures to the pump

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 .................................................................................................................. 4

Important Facts

read before commencing installation ................................... 6

Location – General ................................................................................................... 7

Location – Cold Water Installation ............................................................................ 8

Location – Suction Lift Installation ........................................................................... 9

Pump Connections ..................................................................................................11

Electrical Installation .............................................................................................. 12

Commissioning ....................................................................................................... 14

Maintenance ........................................................................................................... 17

Technical Specification ..........................................................................................18

Trouble Shooting ................................................................................................... 20

Warranty ............................................................................................................... 23

Cont ...

- 3

WARNINGS:

-This pump set must not be used for any other application without the

written consent of Stuart Turner Limited and in particular, must not be

connected directly to the mains water supply.

-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 instruction concerning use of the appliance in a safe way and

understand the hazards involved.

-Children shall not play with the appliance.

-Cleaning and user maintenance shall not be made by children without

supervision.

-This product should not be used for the supply of water to more than

one dwelling (house, apartment, flat).

-Maximum head (closed valve) Stuart VariQ – 55 metres.

-The motor casing can become very hot under normal operating

conditions. Care must be taken to ensure it cannot be touched during

operation.

-The electrical installation must be carried out in accordance with the

current national electrical regulations.

-The electrical installation must be installed by a qualified person.

-RCD’s/ELCB’s are not recommended for use with variable speed

drives/motors. If an RCD is mandatory use type B RCD’s.

-For single phase sets with invertor motors the earth leakage circuit

breaker must trip out when an earth fault currents with DC content

(pulsating DC) occur.

-RCD’s suitable for use with variable speed drives/motors are not

suitable for personnel protection.

-Do not touch any electrical components for at least 5 minutes after the

unit has stopped to allow any discharge to occur safely.

-Before starting work on the electrical supply ensure power supply is

isolated.

-DO 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.

-If the power cord is damaged, it must be replaced by an appropriately

qualified person in order to avoid a hazard.

-This appliance must be earthed via the supply cord.

Cont ...

- 4

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.

CHECKLIST

IMPORTANT: With the pump removed from its packaging check for any damage prior to

installation. If any damage is found contact Stuart Turner Ltd within 24 hours of receipt.

Fig 1.

Typical installation configuration.

Short 22mm coper pipe

tails to connect between

isolating valve and flexible

pipes.

22mm copper outlet

pipework (discharge).

22mm isolating valve (non-

restrictive) and fittings

(not supplied) to allow

easy pump service.

22mm flexible hose.

These hoses are fitted

with G¾ female connector

suitable for connection to

a G1m to G¾ adaptor or

fitting.

22mm copper inlet

pipework (suction)

Cont ...

- 5

Note: Item C, if purchased, is supplied loose and will require fitting to the pump

inlet/outlet. Tighten to torque 4/5 Nm. Your product may vary slightly from the picture

above.

ITEM

DESCRIPTION

QTY

Pump

Hose

Items B & C not

supplied but can

be purchased.

Part No. 29044

(UK) or 29045

(ROI).

Inlet /outlet connector &

gasket

In line filter

Not supplied but

recommended.

Cont ...

- 6

IMPORTANT FACTS: READ BEFORE COMMENCING PUMP INSTALLATION

A Water storage capacity.

•The cold water storage capacity (must be a minimum of 230 litres) and sufficient to

meet the flow rates required by the pumped equipment and any other water using

fittings and appliances, which may be operated simultaneously.

•Ensure the pump is primed as described in the priming section before starting,

damage to the shaft seal will result otherwise. See Section 5 - Commissioning.

B Water temperature

•The water entering the pump must be controlled as follows:

•The minimum allowable water temperature is 4°C.

•The maximum allowable water temperature is 60°C.

C Pipework - General

•Secure pipework: Ensure pipework to and from pump is independently supported &

clipped to prevent forces being transferred to inlet and outlet branches of pump.

•Flux: Solder joints must be completed, and flux residues removed prior to pump

installation (flux damage will void any warranty).

•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 90° bends.

•DO NOT introduce solder flux to flexible hoses, pumps or pump parts manufactured

from plastic.

•DO NOT allow contact with oil or cellulose based paints, paint thinners or strippers,

acid based descalents or aggressive cleaning agents.

•DO NOT install a non-return valve, or devices which contain non-return valves, in the

suction (inlet) pipework to the pump. The pump must be free to vent to the supply

tank at all times.

•DO NOT bend the flexible hoses beyond 30°. They must be installed as straight as

possible.

•DO NOT connect this pump to the mains water supply.

D Plumbing Installation Regulations

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

regulations.

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

Cont ...

- 7

LOCATION

GENERAL

1.1. Access: For emergencies and maintenance the pump must be easily accessible.

1.2. Protection: The pump must be located in a dry position, frost free and

protected from freezing, particularly when installed in a loft (not

recommended). The pump must be protected from the elements.

1.3. Ventilation: Ensure an adequate air flow to cool the pump. Separate the pump

from other appliances that generate heat. An 80mm (3“) air gap must be

maintained around the pump.

1.4. Safety: The motor casing can become very hot under normal operating

conditions. Care must be taken to ensure it cannot be touched during

operation.

1.5. Water retention: Site the pump in a location where in the unlikely event of a

water leak, any spillage is contained or routed to avoid electrics or areas

sensitive to water damage.

1.6. Static inlet pressure: Before deciding where to locate the unit check to ensure

the static inlet head between pump and the bottom of the cold water tank (Ref

Fig. 2) does not exceed the max inlet head of 10 metres.

1.7. Ambient temperature: The pump must be sited in a location where the

maximum ambient temperature does not exceed 40°C.

1.8. Pipework: For optimum performance pipework use 22mm diameter.

1.9. Fixing: Ensure the pump is adequately secure when installed.

Note: Inlet pipework must always be greater than or equal to the outlet pipework

diameter. Pipework should only reduce to 15mm when entering terminal fitting.

When the length of the inlet pipe is more than 10 meters or the height of the inlet

pipe is greater than 4 meters, the diameter of the inlet pipe must be larger than the

diameter of the outlet.

1.10. Static outlet pressure: The static outlet head (Fig 2) must also be within the

maximum requirement of 12 metres.

1.11. Noise: Care must be taken when mounting the pump so that noise is not

amplified through loose panels or pipework.

1.12. Direction of flow: Ensure water enters the pump via the inlet on the front of the

pump and exit out the top.

1.13. Flexible hoses: Only use the Stuart Turner hose set that are available for the

pump.

1.14. Isolating valves: Separate system isolating valves (non-restrictive) must be

fitted to allow easy pump service.

- 8

2. LOCATION - COLD WATER INSTALLATION

Fig 2.

Diagram showing typical cold water installation.

2.1. The cold water supply: Must be a DEDICATED AIR FREE supply via a tank

connector. Do not connect to the mains.

Static outlet pressure 12m max.

Static inlet pressure 10m max.

- 9

Pump Mounted Above Liquid Source (Suction Lift Installation):

Fig 3.

Diagram showing typical pressure control installation with suction lift.

2.2. The pumps can be used in a suction lift installation providing the height of lift is

within the limits specified in the limits of application section and the liquid to be

pumped is cold water.

2.3. Before deciding where to locate the unit, check to ensure the static outlet head

does not exceed the maximum requirements 12 metres (Ref fig 3).

2.4. A footvalve and strainer may be used, and the suction pipework size must

match the pump. In order to prevent solid particles from entering the electric

pump, the inlet pipe must be equipped with a filter.

2.5. Lay the suction piping over the shortest possible distance and ensure there is a

constant rise from the liquid source to the pump. Any high spots will cause air

pockets to form, reducing system efficiency.

Max. static outlet pressure 12m

Max. suction lift 4m

- 10

2.6. Ensure all joints in suction pipework are completely airtight. Failure to comply

will result in loss of prime.

2.7. The intake of the footvalve/strainer should be positioned such that it cannot be

blocked with debris or silt that are frequently found in the bottom of sumps and

wells.

2.8. When a footvalve is installed in the suction pipework, it is recommended that

suitable pressure relief valve be fitted in the discharge (outlet) pipework from

the pump.

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