Bristan Opac Series 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
Opac Thermostatic Bath
Fillers
Models covered: OP THBF DMH C,
OP THBF DML C, OP THBF WMH C & OP
THBF WML C

2
Contents
Thank you for choosing Bristan, the UK’s leading showers and taps expert.
Your Bristan bath filler is a thermostatic mixer incorporating a wax capsule thermostat
to ensure constant water 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 Features...................................................................... 5
Specifications ........................................................................... 6
Dimensions............................................................................... 7-8
Pack Contents .......................................................................... 9-12
Installation Requirements ....................................................... 13-16
System Requirements ......................................................... 13-14
WRAS IRN’s ......................................................................... 15
TMV3 .................................................................................... 16
Installation................................................................................ 17-20
Wall Mounted First Fix......................................................... 17-18
Wall Mounted Second Fix .................................................... 19
Deck Mounted Second Fix................................................... 20
Operating the Bath Filler ......................................................... 21
Commissioning......................................................................... 22
In-Service Testing .................................................................... 23-24
Maintenance ............................................................................. 25-27
Cartridge Maintenance ....................................................... 25
Adjusting the Temperature ................................................. 26
Thermal Disinfection Flushing ........................................... 27
Troubleshooting........................................................................ 28-29
Guarantee ................................................................................. 30-31
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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 bath filler safely you must
employ the services of an experienced qualified plumber.
•These fittings 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 bath filler if you suspect it is frozen. Do not site the
bath filler 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 bath filler 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 bath filler.
•This product must not be modified 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 Specification D08. It also satisfies
the requirements of the water supply (water fittings) regulations 1999 and current
bylaws.
BS 6700 recommends the temperature of stored water should never exceed 65°C.
A stored water temperature of 60°C is considered sufficient to meet all normal
requirements and will minimise the build up of lime scale in hard water areas.
If the fitting is installed at low pressure (tank fed), then the minimum distance from
the bath filler 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.
This bath filler 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 features
1. Temperature Control
Adjustable temperature control.
Lift the control upwards to increase the
temperature.
Move the control downwards to decrease
the temperature.
2. Water Flow Control
Controls the amount or flow of water from
the bath filler.
Lift the control upwards to turn on and
increase the flow.
Move the control downwards to reduce the
flow and turn off.
3. 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
flushed with hot water without the need
to disassemble the bath filler or reset the
mixed water temperature.
4. TMV3 Approved
This bath filler has been tested to the
TMV3 scheme for use in Healthcare and
Commercial situations and performs to
the requirements of NHS Specification
D08.
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1
2
Hot
Cold
On
Off

6
Specifications
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Specifications
Inlet connections: OP THBF DMH: 3/4” BSP with 180mm between centres.
OP THBF DML: 3/4” BSP with 180mm between centres.
OP THBF WMH: 15mm compression with 150mm between centres.
OP THBF WML: 15mm compression with 150mm between 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 44°C
(can be re-set to suit site conditions). If the temperature is re-set to suit different site
conditions the valve 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. water temperature 43°C: minimum hot supply 53°C).

7
312
Dimensions (mm)
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115
160
180
97
280
150
73
170
215
OP THBF DML
OP THBF WML

8
280
150
52
73
215
312
160
52
Dimensions (mm)
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180
97
OP THBF DMH
OP THBF WMH

9
Pack Contents - OP THBF WML
1Bath filler x1
2Wall mount fixing plate x1
3Olives x2
4Fixing bridges x2
5Rear covers x2
6Front covers x2
7Filter washers x2
8Inserts x2
9Wall plate fixings x4
1
2
4
5
6
8
9
3
7
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10
Pack Contents - OP THBF DML
1Bath filler x1
2Threaded Tails x2
3‘O’ Rings x2
4Washers x2
5Backnuts x2
1
2
4
5
3
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11
Pack Contents - OP THBF WMH
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1Bath filler x1
2Wall mount fixing plate x1
3Olives x2
4Fixing bridges x2
5Rear covers x2
6Front covers x2
7Filter washers x2
8Inserts x2
9Wall plate fixings x4
1
2
4
5
6
8
9
3
7

12
Pack Contents - OP THBF DMH
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1Bath filler x1
2Threaded Tails x2
3‘O’ Rings x2
4Washers x2
5Backnuts x2
1
2
4
5
3

13
Installation Requirements
This bath filler 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 bath filler 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 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 bath
filler with a gravity fed system, there must
be a minimum head (vertical distance)
from the underside of the cold water
storage tank to the bath filler of at least 2
metres .
Note: Pumped system (with Essex
flange) If you install this bath filler 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.
Flushing Pipe-work
Important: Before connecting the
bath filler (see ‘Installation’ on pages
15-18), supply pipe-work must be flushed
to clear debris before connecting the bath
filler. Debris will reduce the performance
and life of the bath filler.
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2m min.
2m
min.

14
Installation Requirements
Unvented SystemInstantaneous Water Heater
Pumped System
cold mains supply
cold mains supply
cold mains supply
Pumped System (with Essex flange)
cold mains supply
2m min.
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2m min.
50mm
If less
than 1m
see note.

15
Installation Requirements
This fitting 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
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 aor 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 fittings
(other than a 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 ½” 20mm
2. Exceeding ½”
but not
exceeding ¾”
25mm
3. Exceeding ¾” 70mm
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16
Installation Requirements
Conditions of use for Type 3 (Thermostatic mixer) valves
In order to give compliance with N.H.S. specification 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) 52 to 65 52 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
following designations.
Code Operating Pressure Application
HP-S High Pressure Bath Fill
LP-S Low Pressure Bath Fill
Key:
HP - High Pressure
LP - Low Pressure
The BuildCert TMV scheme
recommends the following set
maximum mixed water temperatures for
use in all premises:
44ºC for Bath Fillers
Bath fill temperatures of more than
44ºC should only be available when the
bather is always under supervision of
a competent person (e.g. nurse or care
assistant).
The mixed water temperature must
never exceed 46ºC.
The maximum mixed water temperature
can be 2ºC above the recommended
maximum set outlet temperatures.
Note: For wash basins, washing under
running water is assumed.
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17
Installation - OP THBF WMH/L C First Fix
Before Installation
Flush through the pipework to ensure
removal of debris. Turn off the mains
water supply and close any isolating
valves.
1. Position fixing backplate
Identify the required position of the bath
filler, where the wall mount fixing plate
will be installed.
Mark a 230mm x 50mm rectangle on the
wall surface.
Warning: Please check for any hidden
electrical wires, cables or water supply
pipes before drilling / cutting into the wall.
2. Prepare water supply pipes
The centres of the hot and cold water
supply pipes should be 150mm apart, with
a sufficent amount of pipework protruding
through the wall.
3. Fit wall mount fixing plate
The wall mount fixing plate has two
methods of fixing.
a) Tighten fixing lugs
Tighten the two screws in the middle of
the fixing plate and the two either side of
the inlets, Tightening these screws will
secure the lugs against the inside of the
wall surface.
b) Screw fixing plate to the wall
Using suitable screws for the wall type
secure the wall mount fixing plate to the
wall. There is a hole in each corner of the
fixing plate for the fixings.
Important: Water supplies to the mixer
must be with hot on the left and cold on
the right when viewed from the front.
Lug
Screw
230mm
50mm
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18
Installation - OP THBF MWH/L C First Fix
4.Cut supply pipework
Once the wall mount fixing plate has
been secured to the wall the water supply
pipework will need to be trimmed back
with the use of a pipe cutter.
Note: The supply pipework must protrude
10mm +/-2mm past the brass insert.
5. Attach olives and fixing bridges
Place olives (3) onto the protruding supply
pipework.
Important: The pipework must protrude
10mm +/- 2mm past the brass inserts.
Screw the fixing bridges (4) onto the
threaded brass inserts using a suitable
spanner.
Note: If required, any decorating should
be complete now before starting the
second fix.
Olive (3)
Brass
insert
Fixing
bridge (4)
Supply
Pipework
Pipe Cutter
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19
Installation - OP THBF WMH/L C Second Fix
1. Fit Covers
Screw the rear covers (5) onto the fixing
bridges (4).
Note: The rear covers (5) screw onto the
fixing bridges (4) flush upto the finished
wall surface.
The front covers (6) slide up and down the
bath filler fixing nuts to allow for different
wall / tile thicknesses.
2. Attach Bath Filler
Place the inserts and filter washers into
the bath filler fixing nuts.
Position the bath filler (1) against the
fixing bridges and carefully tighten the
bath filler fixing nuts onto the fixing
bridges.
The front shrouds (6) can be used to
tighten the bath filler. Tighten fully by
hand.
Note: Take care not to damage the
finish of the bath filler
fixing nuts. Protect the
chromium plated
surfaces with a cloth.
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6
4
5
Bath filler
fixing nuts
1
Filter
Washers
Inserts

20
Installation - Deck Mounted
1. Fit Threaded Tails
Push the threaded tails onto the bottom of
the bath filler and tighten the grub screws
on the side of the pillars.
2. Fit Bath Filler to Bath
Fit the bath filler to the bath ensuring the
‘O’ rings are fitted to the underside of the
threaded tails.
3. Secure the Bath Filler
Thread the rubber washers onto the
threaded tails and secure the bath filler
into position by tightening the fixing nuts
onto the threaded tails. A suitable spanner
maybe required to fully tighten the fixing
nuts.
4. Connect Water Supplies
Connect the water supplies to the
threaded tails.
Water supply
Threaded
Tail
Backnut
Washer
Threaded
Tail
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