Stuart Turner Showermate U2.6 bar Single Guide

SHOWERMATE
Installation, Operation & Maintenance
Instructions
Please leave this instruction booklet with the home owner as it contains important
warranty, maintenance and safety information.
Read this manual carefully before commencing installation.
This manual covers the following products:
Showermate U2.6 bar Single Showermate U2.0 bar Twin
Pt. No. 47375 Pt. No. 47376
Showermate U2.6 bar Twin
Pt. No. 47377
FOR POSITIVE OR NEGATIVE HEAD APPLICATIONS
Please note images are representative only and may not portray
your model

CONTENTS
1PRODUCT OVERVIEW............................................................................................ 1
2WARNINGS ............................................................................................................ 2
3CHECKLIST .............................................................................................................4
4PRE-INSTALLATION CHECK ...................................................................................5
5IMPORTANT FACTS - READ BEFORE COMMENCING PUMP INSTALLATION........6
6LOCATION - GENERAL .......................................................................................... 8
7PUMP CONNECTIONS .......................................................................................... 13
8ELECTRICAL INSTALLATION ................................................................................ 19
9COMMISSIONING..................................................................................................23
10 MAINTENANCE .....................................................................................................24
11 TECHNICAL SPECIFICATION ............................................................................... 26
12 TROUBLE SHOOTING GUIDE .............................................................................. 28
13 THE SHOWERMATE WARRANTY - 3 YEARS .......................................................32
14 DECLARATION OF CONFORMITY ........................................................................34

1
1 PRODUCT OVERVIEW
1.1 Product Description
U2.6 bar Single, U2.0 bar Twin and U2.6 bar Twin.
Electric motor driven single or twin ended peripheral pumps complete with an
automatic control system, consisting of flow switches, pressure switches, pressure
vessels and electronic control.
1.2 Application
Showermate Universal pumps are suitable for positive or negative head installation
conditions. These pumps are designed for single or multiple (up to 4) outlet
pressure boosting applications, within one bathroom, subject to correct
specification and pump sizing in vented stored water systems. Inlet pressures to
the pump and ambient temperatures must not exceed the values given in the
technical specifications.
1.3 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.
1.4 Environment Protection
Your appliance contains valuable materials which can be recovered or recycled.
At the end of the products’ useful life, please leave it at an appropriate local civic
waste collection point.

2
2 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.
•
Cleaning and user maintenance shall not be made by children
without supervision.
•
WARNING: Washer/condenser dryers and condenser dryers. The
pump must not be used in the water supply line to a
washer/condenser drier or a condenser drier, which uses a
constant flow of cold water to aid the condenser drying
process, as damage can occur to the pump. If in doubt or for
further information contact Stuart Turner Ltd.
• 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 undertaken by a qualified
person.
•
In 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.
•
Maximum head (closed valve) U2.0 bar twin-20 metres, U2.6 bar
twin-26 metres, U2.6 bar single-26 metres.
•
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.

3
• This appliance must be earthed via the supply cord, which must
be correctly connected to the earth point located in the
terminal box.
•
Do not remove terminal box cover. No user serviceable parts
inside terminal box.
•
If the supply cord is damaged, it must be replaced by Stuart
Turner Ltd or by one of their approved repairers, or similarly
qualified persons in order to avoid a hazard.
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.

4
3 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.
Figure 1
Note: This image is for reference only.
Item Description Qty
A Pump 1
B ISO hose & integral washer 2(1)
C Plain hose & integral washer 2(1)
Your product may vary slightly from the illustration above.
The quantities shown above are for twin pumps, (single pumps are shown in
brackets).
A
B
C

5
4 PRE-INSTALLATION CHECK
Figure 2
Note: This image is for reference only.
The pressure vessel (Fig. 2) is factory fitted to the pump assembly.
To eliminate any risk that the vessel has lost its assembly torque and sealing
ability during transit, it must be checked prior to installation and should be hand
tight.
IMPORTANT:
• DO NOT overtighten pressure vessel.
• DO NOT lift/carry the pump by the transfer pipe or pressure
vessel manifold.
• DO NOT remove manifold plug from top of pressure vessel
manifold.
Pressure vessel
Hand tighten

6
5 IMPORTANT FACTS - READ BEFORE COMMENCING PUMP INSTALLATION
5.1 Water Storage Capacity
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.
Ensure the pump is primed as described in the priming section before starting,
damage to the shaft seal will result otherwise. See Section 9 - Commissioning.
5.2 Water Temperature
The water entering the pump must be controlled as follows:
• The maximum allowable water temperature is 65 °C.
• The minimum allowable water temperature is 4 °C.
• 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
[phone].
5.3 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.
•
DO NOT stress the inlets/outlets of the pump from the
misalignment of hoses/pipework.

7
5.4 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.
5.5 Pressure Vessel
Pressure vessel is charged at the factory see Section 10 - Maintenance for details.

8
6 LOCATION - GENERAL
• Access : For emergencies and maintenance the pump must be
easily accessible
• Protection : The pump must be located in a dry position, frost free
and protected from freezing, particularly when installed in a loft
(not recommended).
• 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.
• Safety : The motor casing can become very hot under normal
operating conditions. Care must be taken to ensure it cannot be
touched during operation.
• 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.
• 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 (Figure 5 and Figure 6), is at least
0.5 metres and does not exceed the max inlet head of 6 metres.
• Ambient temperature : The pump must be sited in a location
where the maximum ambient temperature does not exceed
40 °C.
• Pipework : For optimum performance pipework MUST be 22 mm.
Pipework should only reduce to 15 mm when entering terminal
fitting.
• Static outlet pressure : The static outlet head must also be within
the maximum requirement (Figure 5 and Figure 6).
• Noise : If supplied the anti-vibration mounting feet and flexible
hoses can be used 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.
• 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).
• Flexible hoses : Only use the Stuart Turner hose set supplied with
the pump.
• Isolating valves : Separate system isolating valves (non restrictive)
must be fitted to allow easy pump service.
• Inline strainer: You MUST ensure the inlet pipework is fitted with
an inline strainer.

9
6.1 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.
Location – Single Pump
Figure 3
Location – Twin Pump
Figure 4
Max static inlet pressure 6m
Max static inlet pressure 6m
Either end of a twin pump
may be used to pump the
hot or cold supply

10
6.2 Non-Preferred Pump Location
If it is necessary to position the Pump above the secondary tapping on the hot
cylinder it is fed by, the risk of introducing air will be increased
To avoid this risk one of the two following solutions must be adopted:
a. The use of a Top Entry cylinder flange.
b.
The use of a Stuart Side Entry cylinder flange, which should have the addition
of an inverted loop ("U" bend) of 350 mm minimum drop before rising to the
pump, located as close as possible to the cylinder wall. This will ensure the
pump receives an air free supply and the cylinder vents any air up the vent
pipe and not the pump feed.
Figure 5
Single Pump
200mm min
Max static inlet pressure 6m
Min static inlet pressure 0.5m
350mm
min
Least preferred
area Negative
head
Max static outlet
pressure 6m

11
Figure 6
Twin Pump
Max static inlet pressure 6m
Min static inlet pressure 0.5m
200mm min
350mm
min
Negative
head
Max static outlet
pressure 6m
Least preferred
area

12
6.3 Cold Water Connection
The cold water supply: Must be a DEDICATED AIR FREE supply via a tank
connector, and must be positioned at a slightly lower level (25 mm minimum) than
the feed pipe to the hot water cylinder.
Ensure that the pipework size from the cold water tank is 22mm minimum.
Do not connect to the mains.
6.4 Hot Water Connection
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.
Hot water supply: The pump must be supplied with a dedicated feed direct from
the hot water cylinder or storage tank, ensuring an air free connection to the
pump. We recommend the use of either the side entry flange (SE) Part No 27900
or a top entry flange (TE) Part No 27800 see Figure 7.
Expansion pipe: When the method of connection is to be made via the expansion
pipe, the BASE of the cold water storage tank MUST be at least 1 metre above the
connection/take off of the hot water storage cylinder feeding the pump.
Figure 7
Off expansion
pipe with rising
28mm offset
reducing to
22mm pipework
to pump and
expansion pipe.
Off expansion
pipe with rising
22mm offset
and 22mm
pipework to
pump.
Top Entry flange
(Part No 27800)
with 22mm
pipework to
pump.
Factory installed
G
¾secondary
tapping with
22mm pipework
to pump.
Or
Side Entry
flange (Part No
27900) with
22mm pipework
to pump.
30°- 45°30°- 45°

13
7 PUMP CONNECTIONS
• Do not use stainless steel, chrome or nickel plated pipe with the
flexible hose push-in plumbing connections.
•
Do not introduce solder flux into the joint or surrounding area as
connectors will be attacked and will fail.
•
All solder joints should be completed and flux residues removed
before final connection to push-in connections, on the flexible
hose.
•
Do not allow contact with oil or cellulose based paints, paint
thinners or strippers, acid based descalents or aggressive
cleaning agents.
•
Never operate pump with inlet and/or outlet isolating valves in
the closed position. Damage will occur!

14
7.1 Flexible Inlet and Outlet Hoses
The pump inlet and outlet ports are threaded G ¾ M. These ports are provided
with a flat sealing face suitable for use with an appropriately sized flat faced fitting
and fibre or rubber washer. Ensure a water tight seal is achieved when the pump is
both stationary and running.
Figure 8
a. Hoses incorporating integral isolating valves should be applied to the inlet
side of pump to satisfy servicing requirements.
b.
Standard hoses with no integral isolating valve should be applied to the
outlet side of pump.
c. Use correct tool for opening and closing integrated isolating valve to
prevent damage.
Please note these valves are of quarter turn design, rotate clockwise to
close and anti-clockwise to open. Failure to comply with these instructions
could lead to valve damage.
d.
WARNING: Pump must not run with valve closed.
e.
Flexible hoses with integral isolating valves do not replace system isolation
valves which must be installed.
Open
Close

15
7.2 Hose to Pump
The pump inlet and outlet ports have fittings which are specifically designed for
connection to the G ¾ female running nuts on the flexible hoses.
The hose end running nut is fitted with a rubber sealing washer which is held
captive within the nut assembly.
Locate the hose into position and screw the nut fully onto the fitting by hand.
Finally nip tight with pliers (4 to 5 Nm) for a water tight seal (do not overtighten).
Figure 9
Flexible hose
Port fitting
G¾running nut
assembly
Rubber sealing
washer (captive in
nut assembly)

16
7.3 Hose to Pipework
1.
The hoses are fitted with plastic push-in connectors, which must only be
connected with the following:
a.
15 mm diameter copper pipe to BS EN 1057 R250 (half hard)
Table 3.
b. 15 mm plastic pipe to BS 7291 part 1 and part 2 (Table 1), or part 3
(Table 1) plus internal support sleeve*.
* The internal bore of the plastic pipe must be supported against
collapse with the pipe manufacturers recommended support sleeve
(pipe insert).
c.
Appropriate plumbing fitting that provides a leak tight connection.
Ensure the pipe is free from all score marks and deformities in the
area of the insertion depth (Figure 10) and cut the pipe square,
removing all burrs and sharp edges to prevent damage to the sealing
‘O’-ring.
Prior to inserting pipe into fitting, mark the insert depth on the wall of
the pipe with a soft pencil at a distance of 31 mm from the end to be
inserted (Figure 10).
Figure 10
15mm pipe
Insert depth = 31mm
Pencil mark

17
2.
Check in the mouth of the fitting that the ‘O’-ring, nylon washer and
collet are in position as shown in Figure 11.
Figure 11
3.
Push the pipe firmly into the fitting, until pencil mark is level with the
top of the collet and the pipe stop resistance is felt. Pull on the pipe to
check it is secure and correctly fitted.
4. To release the joint, push pipe firmly into the fitting, hold the collet
down and gently remove pipe. If the system has been filled with water
care should be taken to isolate the pump and towels used to absorb
spilled water.
7.4 Typical Low Level Installation
In certain installations it may be necessary to install a 90° bend on the inlet or
outlet connections of the pump before the flexible hose to accommodate a low
level installation.
Below are some preferred connection options. All connections seal on the pump
body using a fibre or rubber sealing washer. Tap connector fittings should be used
which must be of an appropriate pressure and temperature rating.
It is essential when using any of the fittings shown below, that a correct water
tight seal is obtained between the pump body and selected fitting and also the
flexible hose and selected fitting. If in doubt contact the fitting manufacturer and
confirm compatibility with the connection to be sealed.
Carefully check connections and pipework for leaks whilst pump running and
stationary before leaving the installation unattended.
Collet
Washer
O-ring
Flexible hose
Pipe stop

18
Figure 12
If you have any concern either about using push-in fittings or should the joint
leak on final test, isolate the water supplies and contact TechAssist on
[phone].
Fibre washer 15mm copper pipe
G ¾F x 15mm elbow
tap connector
15mm compression
to G ¾M
G ¾F flexible hose
(supplied)
Fibre washer
15mm elbow
15mm copper pipe
G ¾F flexible hose
(supplied)
15mm compression
to G ¾M
G ¾F x 15mm
tap connector
15mm stem
elbow
15mm to G ¾M
G ¾F flexible hose
(supplied)
G ¾F x 15mm tap connector with flush central
spigot and rubber sealing washer fitted directly
to the pump terminals
G ¾F x 15mm swivel tap connector with flush
central spigot and rubber sealing washer fitted
directly to the pump terminals
Sealing washer (sometimes captured in fitting)