Stuart Turner CH 12-14 B Guide

Installation, Operation & Maintenance

Instructions

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

important guarantee, maintenance and safety information

Read this manual carefully before commencing installation.

This manual covers the following products:

CH 12–14 B

Pt. No. 46349

50 Hz

STUART

CE compliant product

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PRODUCT DESCRIPTION

Electric motor driven pump complete with flow switch, pressure switch, pressure

vessel and electronic control.

APPLICATION

The Pressure Control range is designed for pressure boosting applications in vented

stored hot or cold, clean fresh water systems, where under gravity, no flow is available.

Other clean non aggressive, non explosive liquids with similar characteristics to water

may be pumped, consult Stuart Turner for such applications.

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

Pre-Installation Assembly ..............................................6

Important Facts – read before commencing installation ......................8

Location ............................................................9

Pump Connections ...................................................13

Electrical Installation ..................................................14

Commissioning ......................................................17

Maintenance .........................................................19

Technical Specification ................................................21

Trouble Shooting .....................................................23

Guarantee ..........................................................26

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WARNINGS:

zThis 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.

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.

zThis product should not be used for the supply of

water to more than one dwelling (house, apartment,

flat).

zMaximum head (closed valve) CH 12–14 B-14 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.

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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.

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.

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CHECKLIST

Note: Item C & G are 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 Item Description Qty

Pump 1 Inline strainer 1

Hose & sealing washer 2 Pressure vessel & ‘O’-ring 1

Inlet connector & ‘O’-ring 1 Outlet connector & ‘O’-ring 1

Anti-vibration feet 3

Fig. 1

28 mm copper

inlet pipework

(suction).

28 mm isolating valve

(non restrictive) and

fittings (not supplied)

must be fitted to allow

easy pump service.

28 mm copper outlet pipework (discharge).

Short 28 mm copper

pipe tails to connect

between isolating valve

and flexible pipes.

28 mm isolating valve

(non restrictive) and

fittings (not supplied)

to allow easy pump

service.

28 mm – G 1 connector

(not supplied) must be

fitted

28 mm flexible

pipes. These

hoses are fitted

with G 1 female

connector

suitable for connection to a G 1

(1 “ BSP) adaptor or fitting.

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.

Note: This image is for reference only.

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PREINSTALLATION ASSEMBLY

Pressure Check and Assembly of Pressure Vessel

a) Certain models are supplied in two parts, the main pump and the pressure vessel.

The pressure vessel is pre-charged with air at the factory (see table below). This

pressure should be checked at the Schrader valve (Fig. 2) using a tyre pressure

gauge and adjusted if necessary using a car or bicycle pump prior to installation.

b) To assemble the vessel (when applicable), remove protective plastic cap from

fitting point. Ensure that the ‘O’-ring is present and correctly fitted in the location

groove at the bottom of the fitting point. Screw the pressure vessel clockwise into

the fitting point until hand tight to achieve a water tight connection.

NOTE: Do not over tighten pressure vessel.

Fig. 2

Detail view of

‘O’-Ring groove

in fitting point

‘O’-Ring

Schrader valve

(under cap)

Pressure vessel

‘O’-Ring

Fitting point

Model Air Precharge

bar (psi)

All

Models 0.9 (13)

Note: This image is for reference only

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Re-positioning of Pressure Vessel

The pressure vessel can be rotated to alternative positions (Fig. 4) in the event of the

factory fitted position being unsuitable for a specific installation.

a) Remove pressure vessel by unscrewing anti-clockwise.

b) Using a 2 mm allen key, carefully loosen all three retaining grub screws by two

turns (Fig. 3).

c) Warning – Care must be taken when re-positioning the pressure vessel to

ensure no strain is placed upon the pressure

switch or reed switch cables.

The flow switch assembly can now be carefully

rotated to an alternative position

(Fig. 4).

d) Ensure all three grub screws are

re-tightened securely to a torque of

2.2 Nm (1.62 lbf feet).

e) Re-fit the pressure vessel

ensuring the ‘O’-ring seal is

in place (see pre-installation

section).

Fig. 3

Grub Screws

(3 off)

Outlet Tower can be swivelled at

this joint line after loosening the

3 equi-spaced grub screws

Motor

Factory fitted position

Area for alternative fitting positions

Fig. 4

Note: These images are for reference only

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1 IMPORTANT FACTS: READ BEFORE COMMENCING PUMP INSTALLATION

A Water storage capacity.

1.11 The hot and cold water storage capacity must be sufficient to meet the flow

rates required by the pumped equipment and any other water using fittings

and appliances, which may be operated simultaneously.

1.12 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:

1.13 The maximum allowable water temperature is 65 oC.

1.14 The minimum allowable water temperature is 4 oC.

1.15 DO NOT fit a pump if the hot water is heated via a method whereby the water

temperature cannot be controlled, such as solar or solid fuel you must consult

the TechAssist team on +44 (0) 800 31 969 80.

C Pipework – General

1.16 Secure pipework: Ensure pipework to and from pump is independently

supported & clipped to prevent forces being transferred to inlet and outlet

branches of pump.

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

pump installation (flux damage will void any warranty).

1.18 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.

1.19 DO NOT introduce solder flux to fleximble hoses, pump or pump parts

manufactured from plastic.

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

or strippers, acid based descalents or aggressive cleaning agents.

1.21 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.

1.22 DO NOT bend flexible hoses beyond 30o. They must be installed as

straight as possible.

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

D Plumbing Installation Regulations

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

regulations.

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

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2 LOCATION  GENERAL

2.11 Access: For emergencies and maintenance the pump must be

easily accessible.

2.12 Protection: The pump must be located in a dry position, frost free

and protected from freezing, particularly when installed in a loft

(not recommended).

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

Separate the pump from other appliances that generate heat. An

80 mm (3 “) air gap must be maintained around the pump.

2.14 Safety: The motor casing can become very hot under normal

operating conditions. Care must be taken to ensure it cannot be

touched during operation.

2.15 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.

2.16 Static inlet pressure: Before deciding where to position the unit, check to

ensure the static inlet and outlet heads of water above the pump (Fig. 5),

does not exceed the maximum permitted limits.

2.17 Pump position: The pump must be positioned as close to the water source

as possible. Ensure the pump is mounted in a position that allows easy access

to the box terminal if required.

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

maximum ambient temperature does not exceed 40 oC.

2.19 Pipework: For optimum performance pipework use 28 mm dia., 22 mm can

be used but will result in reduced pump performance. Note: Inlet pipework

must always be greater than or equal to the outlet pipework diameter.

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

2.20 Static outlet pressure: The static outlet head must also be within the

maximum requirement (Fig. 6).

2.21 Noise: The anti-vibration mounting feet and flexible hoses which are supplied

as standard, and a precaution to reduce noise transmission, however care

must be taken when mounting the pump that any noise is not amplified

through loose panels or pipework. Do not screw down the pump.

2.22 Direction of flow: Ensure the water flow is in the direction of the arrow that is

marked on the flow switch reed clamp (vertically upwards).

2.23 Flexible hoses: Only use the Stuart Turner hose set supplied with the pump.

2.24 Isolating valves: Separate isolating valves (non restrictive) must be fitted to

allow easy pump service.

2.25 Preferred pump location: The pump must, for optimum performance, be sited

as close as possible to and never more than 4 metres from the HOT WATER

cylinder. The pump should always be sited BELOW the HOT WATER take-off

from the cylinder. The pump location is also dependent on limitations of

the static inlet and outlet heads of the installation. For guidance on

limitations and recommended location, consult the following relevant section

for hot or cold water installation.

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2 LOCATION  COLD WATER INSTALLATION

2.26 The cold water supply: The supply must be AIR FREE and have a

DEDICATED CONNECTION to the tank which should be via a tank connector,

positioned at a slightly lower level (25 mm minimum) than the feed pipe to

the hot water cylinder.

Do not connect to the mains.

2 LOCATION  HOT WATER INSTALLATION

Fig. 5

Static inlet pressure

6metres max

1metre min

Cold water

pump

Static outlet pressure 6metres

Fig. 6

Static inlet pressure

6metres max

1metre min

Hot water pump

Static outlet pressure 6metres

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