Stuart Turner Turbo 15T User Manual

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:

Turbo 20S

Pt. No. 49052

Turbo 30S

Pt. No. 46053

Turbo 15T

Pt. No. 49031

Turbo 20T

Pt. No. 49032

Turbo 30T

Pt. No. 49033

FOR POSITIVE HEAD APPLICATIONS ONLY

*3 year as standard extended to 4 years with a Techflange fitted

PRODUCT DESCRIPTION

Electric motor driven single or twin ended peripheral pump, complete with an automatic
control system, consisting of flow switches and electronic controls.

APPLICATION

Techflow Positive head pumps are suitable for positive head installation conditions. The
pumps are designed for pressure boosting applications in vented stored hot or cold, clean
fresh water systems, where under gravity, some flow (approx. 0.6 l/min) is available. Inlet
pressures to the pump and ambient temperatures must not exceed the values given in the
technical specifications.

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

written consent of Techflow Products and in particular, must not be
connected directly to the mains water supply.

 This appliance is not intended for use by persons (including children)

with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person responsible
for their safety.

 Children should be supervised to ensure that they do not play with the

appliance.

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.

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Important Facts - read before commencing installation . . . . . . . . . . . . . . . . . . . . 4

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pump Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Technical Specifi cation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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Cont ...

CHECKLIST

B

B

C

C

A

Fig. 1

Item

Your product may vary slightly from the picture above.

Description Qty

A

Pump 1 Hose with isolating valve 2
Hose 2

B

Item

C

Description Qty

Cont ...

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1 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:

o

o

C.

C.

you must consult our

1.13 The maximum allowable water temperature is 65

1.14 The minimum allowable water temperature is 4

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
helpline.

1.16 The motor casing can become hot under normal operating conditions, care
should be taken to ensure it cannot be touched during operation.

C. Minimum Flow

1.17 For this pump to operate correctly there must be a minimum gravity flow of at
least 0.6 l/min through all outlets to be pumped.

D. Pipework - General

1.18 Secure pipework: Ensure pipework to and from pump is independently
supported & clipped to prevent forces being transferred to inlet and outlet
branches of pump.

1.19 Flux: Solder joints must be completed and flux residues removed prior to pump
installation (flux damage will void any warranty).

1.20 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

o

bends.

1.21 DO NOT introduce solder flux to flexible hoses, pumps or pump parts
manufactured from plastic.

1.22 DO NOT allow contact with oil or cellulose based paints, paint thinners or
strippers, acid based descalents or aggressive cleaning agents.

1.23 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.

1.24 DO NOT bend the flexible hoses beyond 30

o

. They must be installed as

straight as possible.

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

E. Plumbing & Electrical Installation Regulations

1.26 The plumbing installation must comply with “The Water Supply (Water Fittings)
Regulations 1999” and “BS 6700” building regulations.

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

1.28 The electrical installation must be carried out in accordance with the current
national electrical regulations.

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

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Cont ...

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: If possible 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 locate the unit check to ensure
the static inlet head between pump and cold water level (Figs. 4 or 5) is at least

0.5 metres and does not exceed the max inlet head of 14 metres.

2.17 Pump position: The pump must be positioned on its anti-vibration mounting feet
and as close to the water source as possible.

2.18 Ambient temperature: The pump must be sited in a location where the maximum
ambient temperature does not exceed 40

2.19 Pipework: For optimum performance pipework MUST be 22 mm.
Pipework should only reduce to 15 mm when entering terminal fitting.

2.20 Static outlet pressure: The static outlet head (Figs. 4 or 5) must also be within
the maximum requirement of 14 metres.

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

2.23 Flexible hoses: Use only the Techflow supplied hoses to connect 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 preferred pump location is at floor level next to
the hot water cylinder or a level that is below the secondary tapping that feeds
the pump. This will ensure the pump has access to an air free water supply
which is important for trouble free operation (Figs. 4 & 5).
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.

2.26 Non-Preferred Pump Location: The pump must be located with at least

0.5 metres flooded suction at all times.
If it is not possible to locate the pump in the preferred area due to site limitations
and it is necessary to position the unit in the loft, or in a position above the
secondary tapping that feeds the pump, then there is an increased risk of air
locks. This risk must be eliminated.

o

C.

Cont ...

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The following method will help to overcome the problem:

A “U” bend or downward loop in the supply pipe to the pump of 350 mm depth
before rising to the pump should ensure the cylinder vents its air up the
expansion pipe, not up the pump feed (Fig. 2 for Singles and Fig. 3 for Twins).

200 mm

min

Max. inlet head 14 m

Min. inlet head 0.5 m

200 mm

min

Max. inlet head 14 m

Min. inlet head 0.5 m

hot water
services

2 LOCATION - SINGLE PUMP

least preferred area

350 mm

min

Fig. 3 (Twin Pump)Fig. 2 (Single Pump)

hot water
services

least preferred area

350 mm

min

Max. static inlet pressure 14 m

Positive Duty Single Pump System

Fig. 4

Outlet head must be
below bottom of cold
water tank and able
to pass a minimum
of 0.6 l/min of gravity
flow

Cont ...

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2 LOCATION - TWIN PUMP

Max. static inlet pressure 14 m

Outlet head must be
below bottom of cold
water tank and able
to pass a minimum
of 0.6 l/min of gravity
flow

Positive Duty Twin Pump System

Fig. 5

Cold water connection:

2.27 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.

2.28 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.

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Cont ...

Hot water connection:

2. 29 Hot water cylinder or storage tank: When a hot water cylinder or storage tank
is used, ensure the pipework size from the cold water storage to the hot water
storage is of adequate size and a minimum of 22 mm for all models.

2.30 Hot water supply: The pump must be supplied with a dedicated feed direct from
the hot water cylinder or storage tank. We recommend the use of the Techflow
top flange Part No 27901 or side flange 27900. See Section 9 for terms of
guarantee.

2.31 The supply must be air free and connection to the cylinder can be made by one of
the methods shown in Fig. 6.

2.32 Expansion pipe: When the method of connection is to be made via the
expansion pipe, the cold water storage cistern should be at least 1 metre above
the top of the hot water cylinder.

(a) Site installed
22 mm Techflange
with 22 mm
pipework to pump

(b) Factory installed
G ¾ secondary
tapping with
22 mm pipework to
pump

Fig. 6

(c) Site installed
G 1 Techflange
with 22 mm
pipework to
pump

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