Bristan KN2 SHXAR C Mounting instructions

Installation Instructions
and User Guide
Colonial Thermostatic
Surface Mounted Mini
Shower Valve with
Adjustable or Rigid Riser
Models covered: KN2 SHXAR C,
& KN2 SHXRR C
Please keep this booklet for future
Reference.
Installer, when you have read these
instructions please ensure you leave them
with the user.

Contents
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 its
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 0330 026 6273.
Important Safety Information ………………………………………………………….
General Information ………………………………………………………………………..
Product Features …………………………………………………………………………….
Specifications …………………………………………………...................................
Dimensions ………………………………………………………................................
Pack Contents ………………………………………………………………………………..
Installation Requirements ……………………………………….........................
Flow Regulators ………………………………………………………………………........
Prior to Installation …………………………………………………………………………
Installation ……………………………………………………………………….................
Shower Valve………………………………………………………………………………..
Adjustable Riser ………………………………………………………………………….
Rigid Riser …………………………………………………………………………………..
Operation ……………..........………………………………………………………………….
Commissioning ……………………………....………………………………………………
Maintenance …………………………….....………………………………………………….
In-Service Testing ……………………………..……………………..........................
Troubleshooting ……………………………………........………………………………….
Guarantee ……………………………………............……………………………………….
3
4
5
6
7
8-9
10-13
14-15
16
17-22
17-18
19-20
21-22
23
24
25-26
27 -28
29-30
31
2Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.

•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.
•Do not use if the showerhead or shower hose has been damaged or is blocked.
•Do not crush or kink the shower hose, this could damage the hose and cause leaks.
•Remove all packaging and check the components for damage before starting
installation.
•Warning: Before starting any installation please consider the following: Prior to
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
•The fitting of isolating valves is required as close as is practical to the supply inlet
feeds of the thermostatic mixing valve.
•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.
•This product must not be modified in any way as this will invalidate the guarantee.
Important Safety Information
3
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.

General Information
4Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
This product has been tested to the TMV2 scheme which complies with the BS
EN 1287:1999 (LP) and BS 1111:1999 (HP) thermostatic mixing valve standards.
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.
Important: Nominally equal (balanced) inlet supply pressures are
recommended for optimum performance with mixer showers.
This shower valve 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]
Guide to designations
HP High Pressure
LP Low Pressure
S Shower

Product Features
On/Off and Temperature Control
Turn the control anti-clockwise
to turn the shower on and increase
the temperature.
Turn the control clockwise to
decrease the temperature and
to turn the shower off.
5
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
KN2 SHXAR C shown

Specifications
Inlet Connections: 15mm compression, with adjustable centres.
Operating Pressure Range: Min: 0.1 bar –Max: 5.0 bar –Maximum recommended
imbalance between hot and cold supply should not exceed a ratio of 5:1.
Maximum Static Pressure: 10.0 bar
Maximum Outlet Temperature: Factory pre-set to 41ºC (can be re-set to suit site
conditions).
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 temperature 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. shower temperature 43ºC: minimum hot supply 53ºC.
6Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.

Dimensions (mm’s)
7
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
110-155
510
600
150
65
975
345
800
114
114
34
34
114

Pack Contents –KN2 SHXAR C
1
2
3
4
5
6
7
8
9
10
11
1Shower Valve
2Covers x2
3Filters x2 (pre-fitted)
4Green flow regulator (Pre-fitted)
5Yellow flow regulator (Pre-fitted)
6Backplate fixings x2
7Riser rail fixings x4
8Showerhead (single function)
9Sealing washers x2
10 Shower hose
11 Riser rail
8Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.

Pack Contents –KN2 SHXRR C
1
89
10
12 13
14
1Shower Valve
2Covers x2
3Filters x2 (Pre-fitted)
4Green flow regulator (Pre-fitted)
5Yellow flow regulator (Pre-fitted)
6Backplate fixings x2
7Shower rose
8Shower arm
9Shower arm fixings x2
10 Sealing washer
11 Rose swivel joint
12 Top rail
13 Bottom rail
14 Rail connector
9
Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.
2
3
4
5
6
7
11

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 6.
•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 showerhead position of
at least 1 metre.
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 11.
Flushing Pipework
Important: Before connecting the
shower valve (see Installation on pages 17-
22), 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
1m min
1m
min
10 Need help? Give us a call on 0330 026 6273 and speak to one of our trained advisors.