Bristan H64WMT2 Mounting instructions

Please keep this booklet for future reference.
Installer, when you have read these
instructions please ensure you leave them
with the user.
Installation Instructions and
User Guide
Single Sequential D08 TMV3
Thermostatic Mixer Taps
Models covered: H64WMT2 & H64DMT2

2
Contents
Thank you for choosing Bristan, the UK’s leading showers and taps expert.
Your Bristan mixer tap is a thermostatic mixer incorporating a wax capsule thermostat to
ensure constant temperatures.These instructions are for your guidance to a safe and successful
installation and should be left with the user.
All products manufactured and supplied by Bristan are safe providing they are installed
correctly and receive regular maintenance in accordance with these instructions.
Important Safety Information..................................................................3
General Information..................................................................................4
Product Benets.........................................................................................5
Specications...............................................................................................6
Dimensions..................................................................................................7
Installation Requirements.........................................................................8-11
System Requirements..........................................................................8-9
WRAS IRN’s .........................................................................................10
TMV3 .....................................................................................................11
Prior to Installation....................................................................................12
Installation....................................................................................................13-14
Wall Mount............................................................................................13
Deck Mount...........................................................................................14
Operating the Mixer Tap...........................................................................15
Commissioning ...........................................................................................16
In-Service Testing .......................................................................................17-18
Maintenance ................................................................................................19-23
Spout Cleaning / Removal .................................................................19
Cartridge Maintenance ......................................................................20
Non-Return Valve Maintenance .......................................................21
Adjusting the Temperature ................................................................22
Thermal Disinfection Flushing ..........................................................23
Troubleshooting..........................................................................................24-25
Guarantee....................................................................................................26-27
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3
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, used
correctly and receive regular maintenance in accordance with these instructions.
• If you are in any doubt about your ability to install this mixer tap safely you must employ the
services of an experienced qualied plumber.
• These ttings need 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 mixer if you suspect it is frozen. Do not site the mixer
valve where it might be subjected to freezing conditions.
• Remove all packaging and check the contents for damage before starting installation.
• 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 mixer valve it is essential that you thoroughly ush
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 tap.
• This mixer valve must not be modied in any way as this will invalidate the guarantee.
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4
General Information
Operating pressure range: Minimum 0.2 bar, Maximum 5.0 bar.
Maximum static pressure: 10.0 bar.
This product has been tested to the TMV3 scheme for use in Healthcare and Commercial
situations and performs to the requirements of NHS Specication D08. It also satises the
requirements of the water supply (water ttings) regulations 1999 and current bylaws.
BS 8558 recommends hot water should be stored and distributed at a temperature of not less
that 60°C which will help minimise the build-up of lime scale in hard water areas.
If the tting is installed at low pressure (tank fed), then the minimum distance from the outlet
to the underside of the cold tank should be at least 2 metres to ensure adequate performance.
Note: Nominally equal (balanced) inlet supply pressures are recommended for optimum
performance with mixer taps.
This mixer tap should be installed in compliance with the Water Regulations.
If in doubt, contact a registered plumber or your Local Water Authority or the Secretary of The
Institute of Plumbing, address as follows;-
The Institute of Plumbing,
64 Station Lane,
Hornchurch,
Essex, RM12 6NB
Tel:[phone]
Recommended Usage
Domestic Heavy
Commercial
Light
Commercial Health Care
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5
Product Benets
On / Off and Temperature Control
Turn the lever anti - clockwise to turn on the
ow of water.
The water temperature will increase the
further the lever is turned.
To decrease the temperature of water turn
the lever back clockwise.
Thermal Disinfection Flushing
In order to control the build up of bacteria
and to assist against legionella, this TMV has
a built in cleansing feature that allows the
mixed water passages to be ushed with
hot water without the need to disassemble
the mixer valve or reset the mixed water
temperature.
Easy Clean Filters
This TMV has easy clean lters which once
removed isolate the water supply to the
mixer body.
TMV3 Approved
This TMV has been tested to the TMV3
scheme for use in Healthcare and
Commercial situations and performs to the
requirements of NHS Specication D08.
Removable Spout
The mixer tap has a removable spout to
assist with your infection control regime.
Cool Touch Body
The mixer body and hot inlet will only ever
reach the mixer water outlet temperature to
prevent scalding.
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6
Specications
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Specications
Inlet connections: 15mm compression with 150-200mm adjustable centres.
Operating pressure range: Min. 0.2 Bar - Max. 5.0 Bar - Maximum recommended imbalance
between hot and cold supply should not exceed a ratio of 5:1.
Maximum Static Pressure: 10 Bar
Maximum outlet temp: Factory pre-set to 41°C
(can be re-set to suit site conditions). If the temperature is re-set to suit different site
conditions the mixer will work adequately however the TMV3 scheme will not apply.
Supply requirements:
Minimum cold water supply temperature: 5°C.
Maximum cold water supply temperature: 25°C.
Maximum hot water supply temperature: 80°C.
(a maximum hot water supply temperature of 60 - 65°C is recommended for
ablutionary purposes)
Note:The inlet hot water temperature must be at least 10°C above the required blend
temperature (eg. mixer temperature 41°C: minimum hot supply 51°C).
Flow Regulators
This product is supplied tted with a yellow 5 l/p/m (Hot) and a Olive 2 l/p/m (Cold) ow
regulator which should remain tted for both high and low pressure systems.
If the ow regulators are replaced they must be tted as below;
Yellow 5 l/p/m - Hot outlet
Olive 2 l/p/m - Cold outlet

7
Dimensions (mm’s)
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H64 WMT 2
150-200 238 72
130
Ø65
150-200
245
65
114
183
H64 DMT 2
72

8
Installation Requirements
This mixer tap 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 mixer tap 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 Specication section on page
6)
• Instantaneous water heater
(combination boiler)
• Unvented System
• Pumped System
Gravity Fed Hot and Cold Gravity Fed Hot and Mains Cold
cold mains supply cold mains supply
Important: If you install this mixer tap
with a gravity fed system, there must be
a minimum head (vertical distance) from the
underside of the cold water storage tank to
the outlet of at least 2 metres .
Note: Pumped system (with Essex ange)
If you install this mixer 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 ange is used as shown.
Flushing Pipe-work
Important: Before connecting the mixer
tap (see ‘Installation’ on pages 13-14),
the supply pipe-work must be ushed to
clear debris before connecting the mixer tap.
Debris will reduce the performance and life
of the mixer.
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2m min.
2m
min.

9
Installation Requirements
Unvented SystemInstantaneous Water Heater
Pumped System
cold mains supply
cold mains supply
cold mains supply
Pumped System (with Essex ange)
cold mains supply
2m min.
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Key:
2m min.
50mm
If less
than 1m
see note.
Isolating
Valve
Reducing
Valve
Mixer
Tap
Pump Essex
Flange

10
Installation Requirements
This tting needs 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 tting
shall be installed so that its outlet discharges
above the spill-over level of any xed
appliance as indicated below:-
For backow protection in domestic or
installations up to, and including, Fluid
Category 3.
If the tting cannot be installed as indicated
in the table opposite it shall be installed as
either a or b below:
a: with an approved double check valve
assembly or some other no less effective
backow 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 ttings (other than a
draining tap) at a lower level.
For backow 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 tting, which ever is the greater. If the
tting cannot be installed as indicated it
shall be installed with a backow prevention
arrangement suitable for the Fluid Category.
Size of tap or
combination tting
Vertical distance
of outlet above spill-
over level
1. Not exceeding ½” 20mm
2. Exceeding ½”
but not exceeding
¾”
25mm
3. Exceeding ¾” 70mm
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11
Size of tap or
combination tting
Vertical distance
of outlet above spill-
over level
1. Not exceeding ½” 20mm
2. Exceeding ½”
but not exceeding
¾”
25mm
3. Exceeding ¾” 70mm
Installation Requirements
Conditions of use for Type 3 (Thermostatic mixer) valves
In order to give compliance with N.H.S. specication D08 the table below lists the conditions
for normal use.These valves will perform adequately outside these parameters, however they
cannot be guaranteed by the scheme to operate as Type 3 valves. If they are required to work
with other supply conditions an engineer must carry out a risk
assessment and satisfy themselves that the valves are suitable for use.
Normal Conditions of Type 3 valves
High Pressure Low Pressure
Maximum Static Pressure (Bar) 10 10
Flow Pressure, Hot & Cold (Bar) 1.0 to 5.0 0.2 to 1.0
Hot Supply Temperature (ºC) 55 to 65 55 to 65
Cold Supply Temperature (ºC) 5-20 5-20
Minimum Temperature Differential (ºC) 10ºC 10ºC
This valve has been approved for use in the fol-
lowing designations.
Code Operating Pressure Application
HP-WEHigh Pressure Wash Basin
LP-WELow Pressure Wash Basin
Key:
HP - High Pressure
LP - Low Pressure
The BuildCert TMV scheme
recommends the following set
maximum mixed water temperatures for
use in all premises:
41ºC for wash basins
The mixed water temperature must never
exceed 46ºC.
The maximum mixed water temperature
can be 2ºC above the recommended maxi-
mum set outlet temperatures.
Note: For wash basins, washing under run-
ning water is assumed.
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12
Prior to Installation
Flow Straightener.
This mixer tap is supplied with a choice of
laminar or open outlet ow straighteners.
Both ow straighteners are supplied loose in
the box, allowing the installation to be made
in line with different site conditions and user
preference.
To Fit the Flow
Straightener
Insert the chosen ow straightener into the
casing, ensuring the sealing washer is placed
on top of the ow straightener.
Using a suitable spanner tighten the casing
into the spout outlet.
Unscrew ow
straightener
casing
Open
outlet
Outlet
Sealing
Washer
Casing
Laminar
Sealing
Washer
Outlet
Casing
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13
Installation - H64 WMT 2
Important:Water supplies to the mixer must
be with hot on the left and cold on the right
when viewed from the front.
1. Prepare Water Supply Pipes
Terminate suitable pipework inside the wall
cavity / stud partition, ensuring the centres
of the hot and cold water supply pipes are
150-200mm apart.
Important: 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
electrical detector.
If power tools are used do not forget to:
• Wear eye protection
• Unplug equipment after use
2. Fit Mixer Tap
Position the mixer tap into the holes in the
wall surface.
Tighten the backnuts fully (a suitable span-
ner may be required to fully tighten the
backnuts).
3. Connect Pipework
Push the nuts and olives onto the pipework.
Push the pipework into the connections en-
suring the olives are against the connections
and tighten the compression nuts to create a
water tight seal.
4.Tighten Mixer to Connections
Using a suitable hexagonal key tighten the
top and bottom grub screws on to the
connections.
Note:The top and bottom grub screws must
be tightened equally.
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14
Installation - H64 DMT 2
1. Prepare Water Supply Pipes
Terminate suitable pipework under the sink /
work surface ensuring the centres of the hot
and cold water supply pipes are 150-200mm
apart.
2. Fit Mixer Tap
Position the mixer tap into the holes in the
sink / work surface.
Tighten the backnuts fully (a suitable span-
ner may be required to fully tighten the
backnuts).
3. Connect Pipework
Push the nuts and olives onto the pipework.
Push the pipework into the connections
ensuring the olives are against the connec-
tions and tighten the compression nuts to
create a water tight seal.
4.Tighten Mixer to Connections
Using a suitable hexagonal key tighten
the front and back grub screws on to the
connections.
Note:The front and back grub screws must
be tightened equally.
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15
Operating the Mixer Tap
On / Off and Temperature Control
Turn the lever anti - clockwise to turn on
the ow of water.
The water temperature will increase the
further the lever is turned.
To decrease the temperature of water
turn the lever back clockwise.
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Cold
On
Off
Hot

16
Commissioning
Commissioning notes for
Thermostatic Mixing Valves
The rst step in commissioning a
thermostatic mixing valve is to check the
following:
1.The designation of the thermostatic mixing
valve matches the application.
2.The supply pressures are within the valves
operating range.
3.The supply temperatures are within the
valves operating range.
4. Isolating valves (and strainers preferred)
are provided.
If all these conditions are met, proceed to
set the temperature as stipulated in the
Maintenance section.
The mixed water temperature at the
terminal tting must never exceed 46˚C.
It is a requirement that all TMV3 approved
valves shall be veried against the original
set temperature results once a year.When
commissioning / testing is due the following
performance checks shall be carried out:
• Measure the mixed water temperature at
the outlet.
• Carry out the cold water supply isolation
test by isolating the cold water supply to
the TMV, wait for ve seconds, if water is
still owing check that the temperature is
below 44˚C.
If there is no signicant change to the set
outlet temperature (+/-2˚C or less change
from the original settings) and the fail-safe
shut off is functioning, then the valve is
working correctly and no further service
work is required.
Notes: If there is a residual ow during the
commissioning or the annual verication
(cold water supply isolation test), then this is
acceptable providing the temperature of the
water seeping from the valve is no more than
2˚C above the designated maximum mixed
water outlet temperature setting of the valve.
Temperature readings should be taken at
the normal ow rate after allowing for the
system to stabilise.
The sensing part of the thermometer probe
must be fully submerged in the water that is
to be tested.
Any TMV that has been adjusted or serviced
must be re-commissioned and re-tested
in accordance with the instructions in the
Maintenance section.
The installation of thermostatic mixing valves
must comply with the requirements of the
Water Supply (Water Fittings) Regulations
1999.
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17
In-Service Testing
Purpose
The purpose of in service tests is to regularly
monitor and record the performance of the
thermostatic mixing valve.
Deterioration in performance can indicate
the need for service work on the valve and /
or water supplies.
Procedure
Using the same measuring equiptment or
equiptment to the same specication as
used in the commissioning section, adjust
the temperature of the mixed water
in accordance with the manufactures
instructions and the requirement of the
application, Carry out the following sequence.
a) Record the temperature of the hot and
cold water supplies.
b) Record the temperature of the mixed
water at the largest draw-off ow rate.
c) Record the temperature of the mixed
water at a smaller draw-off ow rate, which
shall be measured.
If the mixed water temperature has changed
signicantly from the previous test results
(e.g. >1K), record the change and before re-
adjusting the mixed water temperature check:
a) That any in-line or integral strainers are
clean.
b) Any in-line or integral check valves or
other anti-back siphonage devices are in good
working order.
c) Any isloating valves are fully open.
With an acceptable mixed water
temperature, complete the following
procedure:
a) Record the temperature of the hot and
cold water supplies.
b) Record the temperature of the mixed
water at the largest draw-off ow rate.
c) Record the temperature of the mixed
water at a smaller draw-off ow rate, which
shall be measured.
d) Isolate the cold water supply to the
mixing valve and monitor the mixed water
temperature.
e) Record the maximum temperature
achieved as a result of (d) and the nal
stabilised temperature.
f) Record the equiptment, thermometer etc.
used for the measurments.
If at step (e) the nal mixed water
temperature is greater than 41ºC and / or
the maximum temperature exceeds the
corresponding value from the previous
results by more than about 2K, the need for
service work is indicared.
Note: In-service tests should be carried out
with a frequency, which identies a need
for service work before an unsafe water
temperature can result. In the absence of any
other instruction or guidance, the procedure
described in Annex F of D 08 may be used.
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18
In-Service Testing
Annex F of D 08 (informative)
Frequency of In-service tests
General
In the absense of any other instruction or
guidance on the means of determining the
appropriate frequenzy of in-service testing,
the following procedure may be used:
a) 6 to 8 weeks after commissioning carry
out the tests in ‘In-Service Tests’.
b) 12 to 15 weeks after commissioning carry
out the tests detailed in ‘In-Service Tests’.
Depending on the results of the above tests,
several possibilities exist:
a) If no signicant changes (e.g. <1K) in
mixed water temperatures are recorded
between commissioning and 6 to 8 week
testing, or between commissioning and 12
to 15 week testing the next in-service test
can be deferred to 24 to 28 weeks after
commissioning.
b) If small changes (e.g. 1 to 2K) in mixed
water temperatures are recorded in only one
of these periods, necessitating adjustment of
the mixed water temperature, then the next
in-service test can be deferred to 24 to 28
weeks after commissioning.
c) If small changes (e.g. 1 to 2K) in mixed
water temperatures are recorded in both
these periods, necessitating adjustment of
the mixed water temperature, then the next
in-service test should be carried out at 18 to
21 weeks after commissioning.
d) If signicant changes (e.g. > 2K) in mixed
water temperatures are recorded in either
of these periods, necessitating service
work, then the next in-service test should
be carried out at 18 to 21 weeks after
commisiioning.
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19
Cleaning the Spout / Replacement
To assist with your infection control regime,
this mixer is tted with a removable spout
which should be periodically removed
and cleaned in line with your site risk
assessments.
Replacement spouts are available if required
in order to minimise down-time for the
mixer during this process.
We recommend that the valve should be
thermally disinfected using the integral
ushing process following any cleaning or
replacement of spouts.This will further assist
in the infection control process.
General Cleaning
Your tting has a high quality nish 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 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 tting, even
the non-scratch cleaners.
Note: Never use abrasive detergents or
disinfectants or those containing alcohol,
hydrochloric acid or phosphoric acid.
Maintenance
Grub
Screw
Spout
Spout
Connection
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20
Maintenance
Cartridge Maintenance
We advise that the TMV is regularly serviced
in hard water areas to maintain the ow of
water.
Isolate both hot and cold water supplies to
the mixer tap
Pull both shrouds away from the wall surface
to expose the lters. Isolate both water
supplies to the mixer by unscrewing the
lters fully, using a 10mm hexagonal key until
there is resistance. Stop using the key at this
point and use ngers to “wiggle” the lter
out.
NOTE: Turning the hexagonal key too far
may result in seizing of the lters.
1. Remove the control handle lever. remove
the cap and undo the screw and remove the
lever.
2. Unscrew the cartridge nut anti-clockwise
using a 30mm socket and remove the
cartridge from the TMV body.
3. 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.
4. Grease the seals with a silicon grease
supplied by Bristan (part number: SP-
495-0002) and carefully ret the cartridge.
5. Replace the lever handle, tighten the grub
screw and push-t the cap into position.
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Filter
Shroud
Cartridge
Piston &
Thermostat