Bristan Buzz Wiring diagram

Installation Instructions & User Guide
Please keep these instructions for future reference and request of replacement parts
Buzz Rigid Riser Bar Mixer

Contents Page
Important Safety Information 03
General Information 04
Specifications 05
Dimensions 06
Product Features 07
Installation Requirements 08-10
Installation 11-15
Operation 16
Setting 16
Maintenance 17-18
Troubleshooting 19-20
Notes 21
Guarantee 22-23
Thank you for choosing Bristan, the UK’s leading taps and showers expert. We have designed
This product with your enjoyment in mind. To ensure that it works to it’s full potential, it
needs to be fitted correctly. These fitting instructions have been created to give you all of the
Information you need and, if you need any further help, please do not hesitate to give us a call on
0844 701 6273.
02

Important Safety Information
•Please read these instructions thoroughly and retain for future use.
•All products manufactured and supplied by Bristan are safe provided they are installed
correctly, used correctly and receive regular maintenance in accordance with these
instructions.
•If you are in any doubt about your ability to install this shower valve safely you must
employ the services of an experienced qualified plumber.
•This shower valve needs to be installed in accordance with, and meet the requirements of
the Water Supply (Water Fittings) Regulations 1999 and Scottish Byelaws 2004.
•Warning: Do not operate the shower valve if you suspect it is frozen. Do not site the
shower valve where it might be subjected to freezing conditions.
•Do not crush or kink the shower hose as this could damage the hose and cause leaks.
•Remove all packaging and check the contents for damage before starting installation.
•Warning: Before starting any installation please consider the following: before drilling
into walls, check that there are no hidden electrical wires, cables or water supply pipes.
This can be checked with the aid of an electronic detector.
•If power tools are used do not forget to; - Wear eye protection
- Unplug equipment after use
•Fitting Isolating valves to the inlet feeds is required for ease of maintenance.
•Warning: Before installing the new shower valve it is essential that you thoroughly
flush through the pipework in order to remove any remaining swarf, solder, etc. Failure to
carry out this procedure could cause problems or damage to the workings of the shower
valve.
•It is recommended that when installing the shower valve, full access is provided for
servicing purposes.
•This shower valve must not be modified in any way as this will invalidate the guarantee.
03

General Information
This product satisfies the requirements of the Water Supply (Water Fittings) Regulations 1999
and current bylaws and is designed to be used within systems designed to BS 6700.
BS 6700 recommends the temperature of stored water should never exceed 65ºC. A stored water
temperature of 60ºC is considered sufficient to meet all normal requirements and will minimise
the build up of lime scale in hard water areas
If the shower valve is installed at low pressure (tank fed), then the minimum distance from the
highest installed position of the shower valve to the underside of the cold tank should be at least
5 metres to ensure adequate performance.
This shower valve should be installed in compliance with the Water Regulations. For further
details contact you Local Water Authority.
04

Specifications
Inlet Connections: 15mm Compression with 150mm between centres.
Operating Pressure Range: Minimum. 0.5 bar, Maximum 5.0bar.
Maximum Static Pressure: 10.0bar.
Note: Nominally equal (balanced) inlet supply pressures are required for optimum performance.
If pressures are unequal, then a pressure reducing valve should be used.
Maximum recommended imbalance between hot and cold supply should not exceed a ratio of 5:1
Maximum Outlet Temperature: Factory pre-set to 38ºC with push button override to 46ºC (can
be re-set to suit site conditions or personal preference).
Supply Requirements:
Minimum cold water supply temperature: 5ºC
Maximum cold water supply temperature: 25ºC
Maximum hot water supply temperature: 80ºC
(a maximum hot water supply of 60-65ºC is recommended for ablutionary purposes).
Note: The inlet hot water temperature must be at least 10ºC above the required blend
temperature (e.g. outlet temperature 43ºC: Minimum hot supply 53ºC).
05

Dimensions
All dimensions are in mm’s and are approximate.
06

Product Features
1. Water Flow Control
Controls the amount of flow of water from
the showerhead.
Note: The Buzz shower valve has
an Eco feature. Press the button in
on the handle (1) and continue to turn
the handle for an increased flow rate.
2. Temperature Control
Adjustable temperature control.
The temperature control incorporates
a safety stop facility limiting the water
temperature to 38ºC.
To obtain a higher water temperature,
Press the button in on handle (2)
and continue to turn the control to the
desired temperature.
Cool Touch Feature
This shower valve incorporate a
cool touch feature. When the shower
valve is in use the body of the shower
will not get hot and will remain cool.
2
1
07

Installation Requirements
This shower valve must be installed in
compliance with current water regulations.
If you have any doubts about the water
regulation requirements contact your local
water services provider or use the services
of a professional plumber.
This shower valve is suitable for use with
the following water supply systems.
•Gravity Fed Hot and Cold
(pressure Balanced)
•Gravity Fed Hot and Mains Cold
(differential pressure – see Specification
section on page 5.
•Instantaneous Water Heater
(combination boiler)
•Unvented System
•Pumped System
Gravity Fed Hot and Cold
Important: If you install this shower
valve with a gravity fed system, there must
be a minimum head (vertical distance)
from the underside of the cold water
storage tank to the shower valve position of
at least 5 metres.
Note: Pumped system (with Essex
flange) If you install this shower valve to a
pumped gravity fed system where the
minimum head (vertical distance) from the
underside of the cold water storage tank to
the top of the hot water cylinder is less
than 1 metre we recommend an Essex
flange is used as shown on page 09.
Flushing Pipework
Important: Before connecting the
shower valve (see Installation on pages 12-
14), supply pipework must be flushed to
clear debris before connecting the shower
valve. Debris will reduce the performance
and life of the shower.
Gravity Fed Hot and Mains Cold
Cold mains supply Cold mains supply
2m min
2m
min
08

Installation Requirements
Instantaneous Water Heater Unvented System
Pumped System Pumped System (with Essex flange)
Key: Isolating Reducing Shower Pump Essex
Valve Valve Valve Flange
Cold mains supply Cold mains supply
Cold mains supply Cold mains supply
2m min 2m min
If less
than 1m
see note.
50mm
09

Installation Requirements
These fittings need to be installed in
accordance with the following Installation
Requirements and Notes (IRN) to ensure
they meet the requirements of the Water
Supply (Water Fittings) Regulations 1999
and the Scottish Byelaws 2004.
IRN R001: See text of entry for Installation
Requirements or Notes.
IRN R040 - Schedule 2-15 (1): The fitting
shall be installed so that its outlet discharges
above the spill-over level of any fixed appliance
as indicated below:-
For backflow protection in domestic or
installations up to, and including, Fluid
Category 3.
If the fitting cannot be installed as indicated in
the table opposite it shall be installed as either
a or bbelow:
a: with an approved double check valve
assembly or some other no less
effective backflow prevention device
immediately upstream of the inlet.
b: so that it draws water by gravity only from a
cistern, or cylinder having a
permanently open vent pipe, and the
distributing pipe supplies no other fitting
(other than draining tap) at a lower level.
For backflow protection in premises or
installations up to, and including Fluid
Category 5.
The vertical distance of the outlet above the
spill-over level shall be not less than 20mm or
twice the diameter of the inlet pipe to the
fitting, which ever is the greater. If the fitting
cannot be installed as indicated it shall be
installed with a backflow prevention
arrangement suitable for the Fluid Category.
Size of tap or
combination fitting.
Vertical distance
of outlet above
spill-over level.
1. Not exceeding 1/2
in 20mm
2. Exceeding 1/2 in
but not exceeding
3/4 in
25mm
3. Exceeding 3/4 in 70mm
10

Installation
This Thermostatic Mixer Valve (TMV) should be installed in compliance with Water Regulations
(refer to General Information section). For further details contact your Local Water Authority.
This TMV is suitable for use with the following systems:
•Gravity Fed Hot & Cold (Nominally Equal Pressure)
•Gravity Fed Hot & Mains Cold (Differential Pressure, Max ration 5:1)
•Unvented Systems
•Instantaneous Water Heater (Combination Boiler)
•Pumped System
Note: On Gravity systems the minimum distance from the underside of the cold water storage
tank to the shower valve must be at least 5 metres.
Warning: Before installing the thermostatic mixer valve it is essential that you thoroughly
flush through the pipework in order to remove any remaining swarf, solder, etc. Failure to
carry out this procedure could cause problems or damage to the workings of the mixer
valve.
Installing the Fast Fit Kit
1. Identify all components are present prior to starting installation.
2. Using the template supplied with the fast fit kit mark out the position for the pipework and the
fixings supplied.
Note: The Pipe centres required for this Thermostatic Mixing Valve are 150mm.
Before drilling into walls, check that there are no hidden electrical wires, cables or water
supply pipes. This can be checked with the aid of an electronic detector.
•If power tools are used do not forget to;
- Wear eye protection
- Unplug equipment after use
11

3. Drill suitable holes in the wall surface at the
marked positions to accommodate the supply
pipework and fixings.
4. Terminate the pipework in the wall ensuring
that there is at least 30mm of 15mm diameter
pipework protruding from the finished wall
surface (See Fig.1).
IMPORTANT: The water supply pipes to the
thermostatic Mixer Valve must be with the Hot on
the left and the Cold on the right when viewed
from the front.
5. Place the wall plates (1) over the supply pipes.
Using the wall plugs (2) and screws (3) provided
fix the wall plates to the wall (See Fig.2).
6. Place the olives (4) onto the protruding
pipework (See Fig.3).
IMPORTANT: The pipework must not protrude
past the olive (4) by more than 5mm.
7. Holding the flat edges of the wall plate (1) with
a 47mm spanner screw the fixing bridge (5) onto
the wall plate (1) using a 22mm spanner. Repeat
this step on both sides (See Fig.3).
8. Screw the covers (6) over the wall plates / fixing
bridges (5), so they are flush against the finished
wall surface (See Fig.4).
Fig.1
Fig.2
Fig.3
Fig.4
12

Installing the Thermostatic Mixer Valve
1. Place the filter washers into the connectors.
2. Position the shower valve against the connectors and carefully tighten the
shower valve fixing nuts onto the connectors. Do not overtighten.
Note: Take care not to damage the finish of the shower valve fixing nuts.
Protect the chromium plated surfaces with a cloth.
3. Fit the diverter to the top outlet of the shower valve.
13

Installing the Rigid Riser
1. Loosen the grub screw on the wall fixing bracket.
2. Assemble the rigid riser and attach to the diverter.
3. Ensure the rigid riser is level and mark the position of the fixing bracket on the wall
surface.
4. Remove the rigid riser from the shower valve
5. Remove the wall fixing bracket from the riser and place on the wall surface at the
market position.
6. Mark fixing holes onto wall surface and drill suitable holes for the fixings supplied.
7. Attached the wall bracket to the wall using fixings supplied.
8. Attach the rigid riser onto the diverter and position riser rail into the wall bracket
ensuring the riser rail is vertical using a spirit level and tighten the grub screw.
9. Attach the rose onto the rigid riser ensuring the sealing and washer is fitted.
10. Attach the shower hose to the diverter ensuring the sealing washer is fitted.
11. Attach the handset to the shower hose, ensuring the sealing washer is fitted.
Installing the wall bracket
1. Mark the position of the wall bracket on the wall surface.
2. Remove the wall bracket fixing using a flat headed screwdriver by pressing the lug.
3. Mark the fixing holes onto the wall surface and drill suitable holes for the fixings
supplied.
4. Attach the wall bracket fixing onto the wall and push the wall bracket onto the wall
bracket fixing.
14

15

Operation
Flow Control
The flow control handle (on the right) increases and decreases the flow rate through the
thermostatic mixer valve. The more the handle is turned the greater the flow rate.
Temperature Control
The temperature control handle (on the left) allows the user to adjust the temperature
up to 38º C, however this can be overridden by simply pressing the button on the temperature
handle in and continuing to turn the control handle until the desired temperature is achieved.
The user can then override the temperature to a maximum of 46ºC.
Setting
The temperature can be adjusted to suit different site conditions or personal preference by
following the
steps below.
•Using a flat bladed tool remove the Handle end cap and loosen the retaining screw.
•Remove the handle by pulling it from the valve spindle.
•Turn the flow of water on to the maximum
temperature and wait a few minutes to allow
the temperature to stabilize.
•Turn the cartridge spindle in the required
direction to increase or decrease the set
temperature. Anti-clockwise to increase the
temperature, clockwise to decrease.
•Turn the flow of water off.
•Replace the handle, retaining screw and handle
cover cap.
Cartridge
Spindle
Plastic Stop
16

General Cleaning
Your fitting has a high quality finish and should
be treated with care to preserve the visible
surfaces. All surfaces will wear if not cleaned
correctly, the only safe way to clean your mixer
valve is to wipe with a soft damp cloth. Stains
can be removed using washing up liquid. All
bath cleaning powders and liquids will damage
the surface of your fitting, even the non –
scratch cleaners.
Note: Never use abrasive detergents or
disinfectants or those containing alcohol,
hydrochloric acid or phosphoric acid.
Flow Valve Maintenance
If your shower valve begins to drip it may be
due to the flow valve letting water pass
through the valve.
Isolate both hot and cold water supplies to the
mixer valve by either:
•Turning the water supply off at the mains
stopcock or
•Turning off the isolation valves to the mixer
valve.
1. Remove the flow control cover cap,
loosen the screw and pull the handle off the
valve spindle.
2. Using a suitable spanner unscrew the
valve out from the body and check its
condition.
3. Clean the valve and replace if necessary.
Maintenance
4. Push the handle back onto the valve spindle
and replace the handle, screw and handle
cover cap.
Cartridge Maintenance
We advise that the shower valve is regularly
serviced in hard water areas to maintain
optimum performance (see Map of Hard Water
Regions in England and Wales overleaf).
Isolate both hot and cold water supplies to the
mixer valve by either:
•Turning the water supply off at the mains
stop cock or
•Turning off the isolation valves to the mixer
valve.
1. Remove the temperature control cover cap,
loosen the screw and pull the handle off the
cartridge spindle
2. Remove the plastic stop. Important:
Take note of the position of the plastic stop and
handle – they must be refitted in the same
positions.
3. Unscrew the thermostatic cartridge from
the body.
4. Place the cartridge in a bowl and carefully
add hot water (just off the boil) and vinegar to
de-scale the cartridge. Leave in the solution
until the water has cooled and rinse with clean
water.
5. Grease the seals with a silicon grease
supplied by Bristan (part number: SP-495-
0002) and carefully refit.
6. Reset the maximum temperature and refit
the handle, screw and handle cover cap.
17

Hard to very hard
Above 200mg/l as
calcium carbonate
equivalent
Soft to
moderately soft
0 - 100mg/l as
calcium carbonate
equivalent
Slightly hard to
moderately hard
100 - 200mg/l as
calcium carbonate
equivalent
Hard Water Regions in England and Wales*
18 * The map above shows England and Wales only. Scotland has mainly soft water.

Troubleshooting
Symptom Cause Remedy
No flow or low flow rate
and / or varying
temperatures.
Partially closed stop or service
valve in water supply pipework to
the mixer 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.
Refer to the specifications
section.
Inlet filter is partially blocked. Clean or replace, flush through
pipework before refitting.
Hot or cold water being drawn off
elsewhere causing pressure
changes or instantaneous boiler
changes.
Do not use other water outlets
when using the shower valve.
Make sure the maintained inlet
pressures are nominally
balanced and sufficient.
If pressures are unbalanced
then a pressure reducing valve
should be used.
Airlock or partial blockage of the
pipework.
Flush through pipework to
ensure removal of debris and
any airlocks.
No hot or cold water reaching the
shower valve.
Check hot and cold feeds (the
valve will shut down if either the
hot or cold supply fails).
Water leaking from
showerhead.
This is normal for a short time
after turning off.
Adjust the angle of the
showerhead as necessary to
vary draining time.
Shower flow control valve failing
to close fully, possibly due to
water borne debris.
Remove flow control valve
assembly and check. Refer to
maintenance section (page 17)
before dismantling shower
valve.
Flow control valve seals
damaged.
Check condition of flow control
valve and replace as necessary
(refer to maintenance section
(page 19).
19

Symptom Cause Remedy
Maximum water
temperature too hot or
cold.
Maximum water temperature set
incorrectly.
Reset maximum water
temperature. Refer to
‘Setting/Commissioning’
sections.
Outlet water
temperature too hot /
cold.
Inlet filter is partially blocked. Check insert filters for any
blockages and clean as
necessary.
Installation conditions outside
operating parameters.
Refer to Installation
Requirements (pages 08-10).
Service shower valve as
recommended. Refer to
maintenance section (page 17).
Water temperature too
cold – maximum water
temperature incorrectly
set.
Hot water temperature is less
than 10ºC 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 cartridge inlet filters and
clean or replace. Refer to
maintenance section (page 17).
Contact the boiler manufacturer.
Instantaneous water heater not
igniting because water pressure
is to low.
Refer to General Information for
system requirements.
Increase water pressure
through system.
Contact the boiler manufacturer.
Only hot or cold water
from Thermostatic
Mixing Valve outlet.
Inlet water supplies are reversed
(hot to cold supply).
Check the connections are the
correct way round. Hot on the
left and cold on the right when
viewed from the front. Rework
pipework as necessary.
Inlet filter is partially blocked. Clean or replace, flush through
pipework before refitting.
Troubleshooting
20