Gainsborough GSME User manual

TM
EXPOSED MANUAL MIXER VALVE
WITH ADJUSTABLE KIT
INSTALLATION GUIDE

2
General Information
This product must be fitted in compliance with the UK Water Supply
(Fittings) Regulations. If in doubt please contact your local water authority.
Contents
General Information 2
Tools Required (Tools not supplied) 3
Warranty 3
Before You Start 3
Water Supply Requirements 4
Installation 5
Shower Valve Components 5
Shower Valve Installation 5
Shower Kit Components 8
Fitting the Shower Kit - Rail Assembly 8
Cleaning the Cartridge 10
User Instructions 12
General Cleaning 13
Troubleshooting 14

3
Tools Required (Tools not supplied)
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We have taken great care to ensure that this product reaches you in
perfect condition. However should any parts be damaged or missing
please contact your point of purchase. This does not affect your statutory
rights. In addition if you require replacement parts please contact the
Gainsborough customer helpline on 01959 560760 for assistance.
Warranty
Gainsborough products are supplied complete with a 1 year guarantee
that can be upgraded by registering this product with Gainsborough.
For details see: www.gainsboroughshowers.co.uk/warranty
Before you start
This shower should be installed by a competent person in compliance
with current Water Supply Regulations. For further details contact your
Local Water Authority.
a. Identify all components and check pack contents.
b. Turn off water supplies.
c. Suitable full bore isolation valves must be fitted to both supplies in
accordance with current Water Supply Regulations and our terms of
warranty. Valves must be accessible for warranty and servicing.
Before making any pipe connections all supplies MUST be
thoroughly flushed to remove any debris.

4
Water Supply Requirements
Hot Water Maximum: 65˚C Cold Water Minimum: 5˚C
Recommended 60-65˚C Recommended 10-15˚C
Always maintain a 10˚C difference between hot system temperature
and maximum hot setting of valve.
Operating Pressure Range: Min. 0.15 bar, Max. 5.0 bar
Operating pressures: Hot and cold supplies must be equal pressures in
order to ensure the maximum efficiency of the mixer.
When water pressure is higher than 5 bar a pressure reducing valve
(not supplied) must be fitted before the mixer. A setting of 3 bar is
recommended.
This valve is suitable for gravity stored, gravity boosted (pumped),
balanced high pressure and combination boiler systems.
For gravity and gravity pumped systems use 22mm supply pipes and
reduce to 15mm for connection to the shower valve.
Pump Installation: PUMPS MUST NOT BE FITTED DIRECTLY TO A
WATER MAIN. REFER TO PUMP MANUFACTURERS INSTALLATION
GUIDELINES. Ensure there is adequate flow through the pump to
activate the flow switches.
Combination boiler: MUST have a minimum rating of 24kW (80,000
Btu) and be of the type fitted with a fully modulating gas valve.
N.B. Boiler performance may affect outlet temperature.
Not suitable for mixed water supplies, i.e. gravity hot and
mains cold.

5
Installation
This product is suitable for concealed, falling and rising inlet supply
pipes.
1. Ensuring adequate provision to allow the water to discharge safely
to waste, turn on the supplies to flush the system through. Attach
pressure test equipment and pressure test the system in accordance
with Water Supply Regulations.
N.B. Turn off the water supply following system flushing.
2. Construct suitable 15mm inlet supplies at level 150mm centres. For
concealed pipework ensure the pipes protrude a minimum working
length of 100mm, measured from the intended finished wall surface.
Inlet water supplies
As viewed from front on:
Left = HOT
Right = COLD
Pipe centres: 150± 1mm
Pipe tails: 10-18mm
from finished surface
3. Once the wall surface has been finished, flush through the pipe work
prior to trimming the length of the pipes to 10-18mm, measured
from the finished wall surface.
N.B. We recommend using a rotary type cutter but if a hacksaw is
used, ensure the cut is straight and the pipe ends must be carefully
deburred and chamfered.
N.B. If plastic pipe is used, tube inserts must be fitted and must
not increase the diameter or extend the cut off length by more than 2mm.
We recommend to apply a suitable sealant around the
incoming pipe work to stop water entering the wall.
Valve body
Grub screw
& cover cap
Fixing nuts
Wall screws
Wall plugs
Elbow
cover
plates
Mounting
bracket
Washers
Elbows
Control lever
Copper olives

6
4. Temporarily fit the inlet elbows to the
valve connectionsand the *mounting
bracket to base of the valve.
*Note: to fit the valve body to the
mounting bracket, push and twist
to engage the lugs.
5. Place valve body against the wall
with elbows over the pipe tails and
mark around the base where it sits
on the wall. To ensure the valve
will be straight upon fixing to the
wall, mark both the finished wall
and the mounting plate with a
central dot. These dots will be used
for ease of alignment when fixing
the bracket to the wall.
6. Remove the mounting bracket from
the valve body and place it in the
centre of the outlined valve position.
Align the dots made in step 5 and
mark the points for the fixing holes.
7. Drill holes for fixings suitable for the
wall type / construction. Use the
wall plugs and screws supplied if
suitable and secure the mounting
bracket to the wall.

7
8. Without the elbows attached, fit
the valve body to the *mounting
bracket and place the elbow cover
plates, fixing nuts and copper olives
over the pipe tails.
*Note: to fit the valve body to the
mounting plate, push and twist to
engage the lugs.
9. Slide the elbows onto the pipe tails, push fully home and loosely
attach the nuts.
10. Ensuring that the rubbers seals are in place connect the elbows to
the valve body.
11. Securely tighten all nuts of the elbows using a suitable spanner.
12. Fit the control handle to the valve,
tighten the grub screw using the
hexagonal key and fit the cover cap.
13. Turn on water supplies and check
for leaks.

8
Fitting the Shower Kit - Rail Assembly
ADJUSTABLE SHOWER KIT NO. DESCRIPTION QTY
1
2
3
4
6
7
9
8
4
3
2
1
5
1 Wall Plug 2
2 Rail Fixing Bracket 2
3 Wall Screw 2
4 Rail End Cap 2
5 Handset Holder 1
6 Handset 1
7 Riser Rail 1
8Hose Washer 2
9Shower Hose - 1.25m 1
530 ±± mm
1-1
514mm
1. Using a level and tape measure prepare
two fixing points 514mm vertically
apart using the fixings provided,
if suitable.

9
2. Fit the handset holder to the rail.
N.B. The handset holder button must
be depressed whilst fitting.
3. Secure the upper rail bracket into
position on the finished wall surface
using the wall screw provided
(if suitable).
4. Attach the lower rail bracket onto the rail and offer the rail into the
top bracket ensuring that the slot of the rail locates onto the lug of
the bracket.
5. Secure the lower rail bracket to the wall, using the wall screw
provided (if suitable).
6. Place the rail end caps into the brackets and push firmly into position.
7. Ensuring the hose washer is in the correct position; attach the non-
conical end of the hose to the valve body. Run the shower to clear
any debris that may be present.
8. Ensuring that the hose washer is in position, attach the shower head.
9. Place the hose in the handset holder.

10
Cleaning the Cartridge
See image page 11.
1. Before carrying out any maintenance, ensure the water supplies
are isolated. Once isolated, turn the shower on to release
internal pressure.
If unsure contact a qualified tradesman.
2. Carefully remove the control handle cover cap by inserting a
suitable tool and levering out.
3. Using a 2.5mm hexagonal key, loosen the grub screw and remove
the control handle.
4. Unscrew the chrome cover ring.
5. Remove the large brass locking nut using a suitable spanner.
6. Prior to removing the cartridge, take note of its orientation as it
must be refitted the same way.
7. Using a suitable pair of grips pull the cartridge free from the valve
body. Rinse the cartridge under cold water to remove any debris
or limescale build up and grease the o-rings prior to re-fitting.
8. If necessary, replace the cartridge. A replacement cartridge can
be obtained by contacting customer service on 01959 560760.
9. Refit the cartridge into the valve body by lining up the two keyways
(located at the top left and right) and ensuring the positioning
mark (made in point 6) is aligned.
10. Refit the brass locking nut (taking care not to over-tighten), screw
on the chrome cover ring and place the control handle back into
position (lever at the 6 o'clock position).
11. Tighten the grub screw and fit the cover cap by pressing into
position.
12. Reinstate the water supply and ensure there are no leaks.

11
Cleaning the Cartridge
See instructions page 10.

12
User Instructions
Shower valve
The valve and fixings MUST NOT be used as a grab rail or means
of support.
To turn the shower on lift the lever until the desired flow is achieved.
For cooler temperature - rotate anticlockwise.
For warmer temperature - rotate clockwise.
Note: with all Gainsborough shower valves fitted to combination
boiler systems, it may be necessary to adjust the control lever and
reduce the flow to achieve a comfortable showering temperature.
Important: This mixer shower is not thermostatic and will
not prevent water from flowing from the shower head
should there be a loss of one of the water supplies to the
mixer.
Shower head and rail system
NEVER ATTEMPT TO MAKE ANY ADJUSTMENT TO THE SHOWER
HEAD BY PULLING ON THE SHOWER HOSE.
1. To select the preferred height of the handset fully depress the
button on the holder, the slider can then be moved up or down
the rail.
2. Angular adjustment is made by carefully but firmly pulling
forwards or pushing back the shower head towards the wall.
Note: the tension of the handset holder can be adjusted with a
screwdriver.

13
General Cleaning
Whilst modern plating techniques are used in the manufacture of
these fittings, the plating will wear if not cleaned properly. The safest
way to clean your product is to wipe with a soft damp cloth. Stains
can be removed using washing up liquid.
Do not use abrasive cleaners.
Limescale
Rub the nozzles of the shower head to break down scale build up.
Should chemical descaling of the head become necessary, remove
the shower head and fully immerse in a mild proprietary descaler.
It is imperative that descaling is carried out strictly in accordance
with the manufacturers instructions. Substances that are not
suitable for plastics and electroplated surfaces must not be used.

14
Trouble Shooting
Symptom Possible Cause Remedy
Water leaking
from shower
head.
This is normal for a short time
after turning off. Adjust angle of shower head in holder as necessary to vary
draining time. Clean shower
head.
Shower flow valve failing to
close fully, possibly due to
water borne debris.
Remove cartridge and check.
See page 10 before
dismantling shower valve.
Only hot or
cold water
from the
shower valve
outlet.
Partially closed stop or service
valve in water supply pipework
to the shower valve.
Open stop or service valve.
Mixer cartridge is partially
blocked. Clean or replace, flush through pipework before refitting.
Control dial
stiff to operate. Debris/Scale build up. See page 10.
No flow or low
flow rate and/
or varying
temperatures.
Check shower head, hose and
inline filters for any blockages. Clean as necessary. See page 12 - 13.
Partially closed stop or service
valve in water supply pipework
to the shower valve.
Open stop or service valve.
Instantaneous water heater
cycles on and off as the flow
rate or pressure is too low.
Increase water flow rate
or pressure through
system. Contact the boiler
manufacturer.
Head of water is below the
minimum distance required or
insufficient to activate pump
(gravity supply only).
Raise the cistern or fit a
universal booster pump.
Refer to pump manufacturers
guidelines.
Hot or cold water being drawn
off elsewhere causing pressure
changes or instantaneous
boiler temperature changes.
Do not use other water outlets
when using the shower. This
shower is not thermostatically
controlled and flow rates and
temperature will be affected
when other water outlets are
used.
Make sure the maintained
inlet pressures are nominally
balanced and sufficient.
See Water Supply
Requirements page 4.
Airlock or partial blockage of
the pipework (gravity supply
only).
Flush through pipework to
ensure removal of debris and
any airlocks.
No hot or cold water reaching
the shower valve. Check hot and cold supplies.

15
Symptom Possible Cause Remedy
Outlet water
temperature
too hot/cold.
Mixer cartridge is partially
blocked. Check cartridge for any blockages and clean as
necessary. (See page 10).
Installation conditions outside
operating parameters. See Water Supply Requirements page 4. Refer to
Cleaning the Cartridge section
see page 10.
Hot water temperature is less
than 10°c above the required
blend temperature.
Adjust hot water temperature
or wait for water to reheat if
stored system is used.
Instantaneous water heater
not igniting because water
flow rate is too low.
Increase water flow rate
through the system. Check
hose and cartridge - clean or
replace. See page 10. Contact
the boiler manufacturer.
Shower
controls noisy
while in use.
Working pressure too high. Fit a pressure reducing valve.

Gainsborough Showers
Customer Service Department
The Flyers Way
Westerham Kent TN16 1DE
Aqualisa International
Jan Palfijnstraat 26/002
Kortrijk
Belgium 8500
Customer Helpline: 01959 560760
Fax: [phone]
Website: www.gainsboroughshowers.co.uk
Email: [e-mail]
Warranty: www.gainsboroughshowers.co.uk/warranty Part No. 706103 Issue 01 Oct 21