Bristan ST PUMP15TN Guide

Installation, Operation & Maintenance
Instructions
Please leave this instruction booklet with the owner as it contains
important guarantee, maintenance and safety information
Read this manual carefully before commencing installation.
This manual covers the following products:
Standard 1.5 bar Twin ended shower pump - ST PUMP15TN
Standard 2.0 bar Twin ended shower pump - ST PUMP20TN
Standard 2.0 bar Single ended shower pump - ST PUMP20SG
FOR POSITIVE HEAD APPLICATIONS ONLY

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PRODUCT DESCRIPTION
Electric motor driven twin ended peripheral pump complete with an automatic control
system, consisting of flow switch and electronic control.
APPLICATION
Bristan pumps are designed for single shower or outlet applications in vented stored
water systems, inlet pressures to the pump and ambient temperatures must not exceed
the values given in the technical specifications.
Bristan Single pumps are not suitable for boosting a single side of a dual flow mixer valve
or tap. Consult Bristan for alternative pump.
zThis pump set must not be used for any other
application without the written consent of Bristan
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. Children shall not play with the
appliance. Cleaning and user maintenance shall
not be made by children without supervision.
zChildren 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 ..................................................................... 13
Maintenance ....................................................................... 14
Technical Specication ............................................................... 15
Trouble Shooting ................................................................... 16
Guarantee ......................................................................... 17

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Cont ...
CHECKLIST
Your product may vary slightly from the picture above.
Item Description Qty Item Description Qty
Pump 1 Anti-vibration feet 4
Plain Hose & integral washer 4 Inline strainers (not supplied) 2
A
B
C
D
IMPORTANT: With the pump
removed from its packaging
check for any damage prior to
installation. If any damage is found
contact Bristan immediately.
Fig. 1
15 mm pipework
22 mm outlet pipework to
shower/bathroom
A
C
D
B

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Cont ...
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
Bristan.
C. Minimum Flow
1.16 For this pump to operate correctly there must be a minimum gravity flow of at
least 0.8 l/min through the outlet to be pumped.
D. Pipework - General
1.17 Secure pipework: Ensure pipework to and from pump is independently
supported & clipped to prevent forces being transferred to inlet and outlet
branches of pump.
1.18 Flux: Solder joints must be completed and flux residues removed prior to pump
installation (flux damage will void any warranty).
1.19 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.
1.20 DO NOT introduce solder flux to flexible hoses, pumps or pump parts
manufactured from plastic.
1.21 DO NOT allow contact with oil or cellulose based paints, paint thinners or
strippers, acid based descalents or aggressive cleaning agents.
1.22 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.
1.23 DO NOT bend the flexible hoses beyond 30o. They must be installed as
straight as possible.
1.24 DO NOT connect this pump to the mains water supply.
E. Plumbing Installation Regulations
1.25 The plumbing installation must comply with the current water and building
regulations.
1.26 The plumbing installation must be installed by a qualified person.
1.27 The electrical installation must be carried out in accordance with the current
national electrical regulations.
1.28 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: 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 the bottom of the cold water tank (Fig. 4)
is at least 0.5 metre and does not exceed the max inlet head of 10 metres.
2.17 Ambient temperature: The pump must be sited in a location where the
maximum ambient temperature does not exceed 40 oC.
2.18 Pipework: For optimum performance in new installations pipework must be
22 mm, reducing to 15 mm only when entering the terminal fitting.
If installing in an existing installation 15 mm pipework may be used but will
reduce the pumps performance.
2.19 Static outlet pressure: The static outlet head (Fig. 4) must also be within the
maximum requirement of 10 metres.
2.20 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.
2.21 Direction of flow: Ensure the water inlet supply is
connected to the correct pump ports indicated by
INLET arrow/s detailed on the pump rating label
Fig. 2.
2.22 Flexible hoses: Only use the Bristan hose set supplied with the pump.
2.23 Isolating valves: Separate system isolating valves (full bore) must be fitted to
allow easy pump service (not supplied).
INLET
INLET
Fig. 2

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Cont ...
2.24 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.
2.25 Non-Preferred Pump Location: The pump must be located with at least
0.5 metre flooded suction at all times.
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:
The use of a Stuart Top Entry (TE) cylinder flange.
The use of a Stuart Side Entry (SE) 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 (Fig. 3).
Max. static inlet pressure 10 m Min. static inlet pressure 0.5 m
350 mm min.
200 mm min.
Least preferred area
Fig. 3
hot water
services

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Cont ...
2 LOCATION - TWIN PUMP
2 LOCATION - SINGLE PUMP
Cold water connection:
2.26 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.
Do not connect to the mains.
Hot water connection:
2.27 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 Stuart flange (SE) Part
No 27900 or the top entry Stuart flange (TE) Part No 27800 see Fig. 5.
2.28 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.
Fig. 4
Static inlet pressure Max. 10 m Min. 0.5 m
Outlet head must be
below bottom of cold
water tank and able
to pass a minimum
of 0.8 l/min of gravity
flow
Fig. 4
Static inlet pressure Max. 10 m Min. 0.5 m
Outlet head must be
below bottom of cold
water tank and able
to pass a minimum
of 0.8 l/min of gravity
flow

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Cont ...
Fig. 5
G 1 Stuart Flange
(Part No. 27800)
with 22 mm
pipework to pump
reducing to
15 mm.
Off expansion
pipe with rising
22 mm offset
and 22 mm
pipework to
pump reducing
to
15 mm.
Off vertical
expansion pipe
with 22 mm
pipework to pump.
or
Site installed G 1
tank flange with
22 mm pipework
to pump reducing
to 15 mm.
Factory installed G ¾
secondary tapping
with 22 mm pipework
to pump.
or
Side mounted
Techflange with 22
mm pipework to pump
reducing to 15 mm.
Alternative
connection with
pump being the
first tee on the
supply line.

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Cont ...
3 PUMP CONNECTIONS
zDo not use stainless steel, chrome or nickel plated pipe with
the flexible hose push-in plumbing connections.
zDo not introduce solder flux into the joint or surrounding area
as connectors will be attacked and may fail.
All solder joints should be completed and flux residues removed
before final connection to push-in connections, on the flexible
hose.
zDo not allow contact with oil or cellulose based paints, paint
thinners or strippers, acid based descalents or aggressive
cleaning agents.
zNever operate pump with inlet and/or outlet isolating valves in
the closed position. Damage will occur!
3.11 Hose to pump: The pump inlet and outlet ports have moulded 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 (4/5 Nm)
for a water tight seal (do not overtighten).
Flexible hose
G ¾ running nut
assembly
Rubber sealing
washer (captive in
nut assembly)
Port fitting
Fig. 6

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3.12 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 fittings that are compatible and will provide a water
tight connection.
Ensure the pipe is free from all score marks and deformities in the area of the
insertion depth (Fig. 7) and cut the pipe square removing all burrs and sharp
edges to prevent damage to the sealing ‘O’-ring.
2. Prior to inserting pipe into fitting mark
the insertion depth on the wall of the
pipe with a soft pencil at a distance of
31 mm from the end to be inserted
(Fig. 7).
3. Check in the mouth of the
fitting that the ‘O’-ring, nylon
washer and collet are in
position as shown in Fig. 8.
4. Push pipe firmly into fitting,
until pencil mark is level with
the top of the collet and the
pipe stop resistance is felt.
Pull on pipe to check it is
secure and correctly fitted.
5. To release the joint, push pipe firmly into fitting, hold collet down and gently
remove pipe. If the system has been filled with water care should be taken to
isolate pump and towels used to absorb spilled water.
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 Bristan Helpline on
0844 701 6273.
Fig. 7
15 mm Pipe
Pencil
Mark
Insert Depth 31 mm
Fig. 8
Collet
Washer
‘O’-Ring
Flexible Hose
Pipe Stop