Bristan DSC 3HBAS C Mounting instructions

Please keep this booklet for future
reference.
Installer, when you have read these
instructions please ensure you leave
them with the user.
Models Covered:
DSC 3HBAS C, DSC 3HBF C,
DSC WMBAS C, DSC WMBF C, DSC
BS C
Installation Instructions
and User Guide
Descent Tap Range

Contents
• Important Safety Information 3
• General Information 4
• Specifications 4
• Dimensions (mm) 5 - 7
• Installation Requirements 8
• Installation 9 - 11
• Maintenance 12
• Troubleshooting 13
• Guarantee 14
• Notes 15
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
Contents
2
Thank you for choosing Bristan.
These fitting instructions have been created to give you all of the information you
need for a safe and successful installation, so please read them thoroughly and
retain for future reference.
If you need any further help, please do not hesitate to give us a call on 0330 026 6273.

• 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 spout 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 spout.
• This product must not be modified
in any way as this will invalidate the
guarantee.
• 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 product
safely you must employ the
services of an experienced qualified
plumber/electrically qualified
person.
• Warning: Do not
operate the product
if you suspect it is
frozen. Do not site the
product where it might be subjected
to freezing conditions.
• These fittings need to be
installed in accordance with, and
meet the requirements of the Water
Supply (Water Fittings) Regulations
1999
and current byelaws.
• Remove all packaging and check
the contents for damage before
starting installation
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
Important Safety Information
3
Important Safety Information

This product has been designed to comply with BS EN 200 for combination
taps to be used within systems designed to BS 6700.
BS 6700 recommends the temperature of stored water should never exceed
65°C. A stored water temperature of 60°C is considered sucient to meet all
normal requirements and will minimise the build up of lime scale in hard water
areas.
If installing this product on a low pressure (tank fed) system please see
specification table below to determine the minimum distance required from
underside of the cold water tank to the outlet.
These taps and mixers should be installed in compliance with the Water
Regulations. Where the supplies are unbalanced, i.e. Hot water from cylinder
tank/cold from the mains, approved check valves must be fitted in the supply
pipes.
For further details contact your Local Water Authority.
P r o d u c t
Code
Working
Pressures Inlet
Minimum distance
from cold water
tank to outlet
(metres)
Min Max
DSC 3HBAS C 0.2 5.0 15mm Compression
Threaded Tail
2
DSC 3HBF C 0.4 5.0 3/4" BSP Threaded Tail 4
DSC WMBAS
C
0.2 5.0 15mm Compression
Threaded Tail
2
DSC WMBF C 0.5 5.0 22mm Compression
Threaded Tail
5
DSC BS C 0.2 5.0 1/2" BSP Threaded Tail 2
Maximum static pressure: 10.0 bar
System Requirements:
Gravity fed hot & cold (Equal pressures)
Gravity fed hot & cold (Dierential pressure, maximum ratio 5:1)
Unvented systems
Instantaneous water heater (Combination boiler)
Specifications
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
General Information
4

Dimensions are approximate and in millimetres.
45
85
50
110
140
115
95
G1 1/4”
110
60
85
55
1/2" BSP
107
88
3 Hole Basin Mixer
3 Hole Bath Filler
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors. 5
Dimensions

Wall Mounted Basin Mixer
Dimensions are approximate and in millimetres.
Bath Spout
182
20
70
70
270
70 50
45 215
200
70
220
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
Dimensions Cont.
6

Dimensions are approximate and in millimetres.
Wall Mounted Bath Filler
270
100
115
70
200
60 190
185
30
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors. 7
Dimensions Cont.

Flexible Connecting Pipes
Care must be taken when connecting the flexible connection pipes to the household
pipework to ensure they do not bend sharply and kink or twist.
See below for recommended ways to fit the flexible connecting pipes.
Important: Failure to follow these guidelines may result in poor performance
and damage to the flexible connecting pipes.
Important: Full access must be made available on installation for future
maintenance/ servicing purposes.
Slight
bend
90 °
angle
Kinks
Curved
round Twists
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Installation Requirements
8

1. With the backnut, metal and rubber
washer fitted to the side body threaded
tail, put the side body through the hole in
the basin / bath from underneath.
2. Screw the shroud, ensuring the washer
is fitted between the shroud and basin /
bath, onto the threaded tail and tighten
backnut underneath onto the bottom of
the basin/bath. The screws on the
backnut allow for any uneven surfaces
and should be tightened up to metal
washer. Replace the handle, grub screw
and the cap.
3. Fit the spout to the basin/bath
tightening the backnut. The screws on
the backnut allow for any uneven
surfaces and should be tightened up to
metal washer.
4. Attach the T- joint assembly and
connect to the side bodies (hot on the
left, cold on the right when viewed from
the front), by using the flexi tails supplied.
5. Connect the hot and cold water
supplies to the side bodies (hot to the left,
cold on the right hand side), fully open
both valves, letting the water flow for a
few minutes to flush the system.
6. Fit the clicker waste (basin mixer only)
ensuring the rubber washer is fitted
between the basin and the waste. Place
the other rubber washer under the basin
and secure in place by tightening the
backnut. In order to fill the basin, the
button in the middle of the waste needs
to be pressed down. To release the water,
press the button again.
7. Check all joints and connections
for leaks.
3 Hole Basin Mixer/ Bath Filler
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors. 9
Installation

Wall Mounted Basin Mixer and
Bath Filler
1. Decide on the final position of the basin
mixer/bath filler. Install suitable batons into
the wall cavity if required to support the
tap body.
2. Plumb the hot and cold water supply
pipes to the required position.
3. Secure mixer body using the screws and
wall plugs supplied.
4. Attach the supply pipework to the hot
and cold inlets (hot on the left and cold on
the right when viewed from the front) en-
suring the olive is fitted to the copper pipe
work. Tighten the compression nut to secure
the pipework and create a water tight seal.
Note: Before finishing the wall surface turn
on both water supplies to check for any
leaking connections.
5. Finish the wall surface.
Note, it is important that a sucient amount
of the spout connecting tube and valves are
left exposed to allow the spout and valve
shrouds to fit.
6. Fit the spout and tighten the grub screws
to secure in position.
7. Screw the valve shrouds onto the valves
using the screws supplied. Push the plinth
over the shroud.
8. Fit the spline adaptors to the valve splines
using the screws and washers supplied.
9. Push the handles onto the valve shrouds
and tighten the grub screws.
10. Turn on both water supplies and operate
the handle letting the water flow for a few
minutes to flush the system.
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
Installation Cont.
10

Bath Spout
1. Terminate sucient pipework
inside the wall cavity to a 1/2" BSP
female fitting ensuring pipework is
fixed in position and rigid so that it is
unable to move.
2. Screw the spout connecting tube
into the female fitting (using a suit-
able thread sealant) ensuring the
spout connecting tube is fully tight-
ened.
3. Finish the wall surface and tile up
to the spout connecting tube.
4. Push the spout and plate onto the
spout connecting tube and secure in
place by tightening the grub screw
on the
underside of the spout.
5. Turn on both water supplies letting
the water flow for a few minutes.
6. Check all joints and connections
for leaks.
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors. 11
Installation Cont.

Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
Operation
HOT
COLD
ON
ON
3 Hole Basin Mixer
HOT
COLD
ON
ON
3 Hole Bath Filler
12

COLD
HOT ON
ON
COLD
HOT ON
ON
Wall Mounted Basin
Mixer
Wall Mounted Bath
Filler
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors. 13
Operation

Before carrying out any
maintenance, turn o both water
supply or close any isolating valves
to the tap.
Prise out the handle cap, loosen
the grub screw using a 2.5mm
hexagonal key and remove the
handle. Remove the spline adaptor.
Remove the valve using the
correct size spanner socket. Wash
the valve with clean running water
and make sure that any debris has
been removed.
If necessary replace the valve
using parts supplied by Bristan
only.
Lightly grease the seal (only use
silicone grease), replace the valve
shroud, spline adaptor, screw and
the handle. Tighten the grub screw
and push fit the cap.
Cleaning
General Cleaning
Important: Tighten the valve
with a 17mm socket and apply
appropriate force/torque.
Do not overtighten.
2.5 mm
hexagonal key
Handle
Tap body
Valve
Grub
Sc rew
Cap
Spline
Adaptor
Sc rew
Bristan products are made from premium materials, with hand polishing
and electroplated finishes.
Your taps or shower should be regularly cleaned with warm water, a mild
pH-neutral liquid soap, and polished with a soft cloth. Any residues from
soap, toothpaste, shampoos and shower gels can cause blemishes if not
rinsed o straight after use.
Household bleaches and cleaners contain harsh chemicals and may damage
the surface finish. Avoid using abrasive cloths, scouring pads, scrub sponges,
steel wool or anything similar.
Some surfaces such as nickel and pewter may be aected by the dye found
in some cloths, so it is also important to avoid hanging cloths on spouts.
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
Maintenance
14

Symptom Cause Remedy
No flow or
low flow rate
Partially closed isolation valve. Open isolation valve.
Instantaneous water heater cycles
on and o as flow rate or pressure
is too low.
Increase water flow rate or
pressure through system to meet
required minimum working
pressure of tap.
Head of water is below the
minimum distance required.
Refer to 'Specifications' on page 5.
Hot or cold water being drawn
o elsewhere causing pressure
changes or instantaneous boiler
temperature changes.
Do not use other water outlets
when using the taps.
Airlock or partial blockage in the
supply pipework.
Flush through pipework to ensure
removal of debris and any airlocks.
Water
dripping
from taps
This is normal for a short time after
using the taps.
This is caused by residual water
tension, the build up of water in
the tap body.
If water continues to drip,
possible build up of debris/
limescale in ceramic disc valves.
Remove valves/cartridge and
clean, refer to 'Maintenance'
section before removing.
Taps do not
turn on
Closed isolation valve. Open isolation valve.
Water supplies to the tap turned
o.
Turn on both water supplies to the
tap.
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors. 15
Troubleshooting

Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
Guarantee
At Bristan, we want to make things
as easy as possible for our customers.
That’s why we oer solid guarantees
on all our products, eective from the
date of purchase, to give you peace
of mind.
To start your free guarantee simply
scan the QR code and register your
product.
Alternatively visit www.bristan.com/
register to register your product via
a computer.
For full guarantee terms and
conditions visit www.bristan.com/
guarantees.
16

Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors. 17
Notes

At Bristan, we want to make things as easy as possible for our customers. That’s why we oer solid
guarantees on all our products, eective from the date of purchase, to give you peace of mind.
To start your free guarantee simply scan the QR code and register your product.
Alternatively visit www.bristan.com/register.
For any other queries, please call our Customer Service on 0330 026 6273
where our expert team of advisors will be able to oer you any help and advice.
For full guarantee terms and conditions visit www.bristan.com/service-centre/guarantees.
Bristan Group Ltd.
UK: Bristan Group, B78 1SG.
EU: Masco Europe S.à.r.l.
14 Rue Strachen
6933 Mensdorf
Luxembourg
Customer Service: [phone]
Web: www.bristan.com
Email: enquir[email protected]
A Masco Company
Issue: D3
Descent Taps