MX Atmos Zinc Manual

INSTALLATION & OPERATING
INSTRUCTIONS
Atmos Zone
(Thermostatic Concentric Mixer Valve with
Fixed Head & Wall Arm)
Atmos Zinc
(Thermostatic Concentric Mixer Valve with
Fixed Head & Wall or Ceiling Arm)
Customer Care - 0845 505 2211
TMV2 Approval property of: Taizhou Guoren
Thermostatic Sanitaryware Co. Ltd

1
INTRODUCTION
This book contains all the necessary fitting and operating instructions for your MX
thermostatic concentric mixer shower.
Please read these instructions carefully. Read through the whole of this book before
beginning your installation.
The shower installation MUST be carried out by a suitably competent person after reading
these instructions.
Care taken during the installation will provide a long and trouble free life from your shower.
For the best performance within the specified running pressure range, a minimum flow of
5 liters per minute should be available on both inlets.
This mixer valve is designed to operate on higher pressure systems found up to a maximum
of 5 bar running pressure. The valve must not be subjected to water temperatures above
80°C. This mixer is also suitable for thermal storage, unvented systems and pumped
gravity systems.
IMPORTANT: Before installing with a gas instantaneous water heater, make sure it is
capable of delivering hot water at a minimum switch-on flow rate of 3 liters per minute.
At flow rates between 3 and 8 liters per minute, the appliance must be capable of raising the
water temperature to a minimum of 52°C.
The water temperature at the inlet to the mixer valve must remain relatively constant when flow
rate adjustments are made (refer to the water heater operating manual to confirm compatibility
with this mixer shower).
Inlet connections are to 15mm compression fittings.
SAFETY WARNINGS
Layout and sizing of pipework must be such that when other services are used, pressures at the
shower control inlets do not fall below the recommended minimum.
DO NOT choose a position where the shower could become frozen or connect this mixer valve
to any form of tap or fitting not recommended by the manufacturer.
The showerhead must be regularly cleaned to remove scale and debris.
Conveniently situated service valves in each inlet supply must be fitted as an independent
method of isolating the shower should maintenance or servicing be necessary, these valves
should not restrict the flow.
DO NOT operate the shower outside the recommended temperatures and pressures stated in
this guide.
As a competent person installing this shower you should ensure that all users are very
conversant in its operation. Always test the water temperature with you hand before entering
the shower.

2
The British Burns Association recommends 37˚C to 37.5˚C as a comfortable bathing temperature
for children. In premises covered by the Care Standards Act 2000, the maximum mixed water
outlet temperature is 41˚C.
Metal surfaces on the hot supply may become hot during operation. Arrange to have the mixer
valve regularly serviced by a suitably qualified person.
SITE REQUIREMENTS
The installation must be in accordance with Water Regulations Advisory Service
(www.wras.co.uk).
Minimum running water pressure: 0.1 bar, but will operate better at a minimum of 0.5 bar.
Maximum running water pressure: 5 bar, (Static water pressure: 10 bar).
For your shower to perform well you should ensure that the pressure is as specified and a
minimum flow of 5 liters per minute is available at both hot and cold inlets.
If a water supply is fed by gravity then the supply pressure should be verified to ensure the
conditions of use are appropriate for the valve.
NOTE: Water Regulations requires the handset to be ‘constrained by a fixed or sliding
attachment so that it can only discharge water at a point not less than 25mm above
the spill over level of the relevant bath, shower tray or other fixed appliance’. A
double check valve, or similar, MUST be fitted in the supply pipework to prevent
back-flow.
The pressure at both the hot and cold water supplies to the mixer valve should be the
same, and the installer should ensure that the flow is not affected by other taps
elsewhere in the house. It is very important that for use in any mains pressure
systems an expansion tank and a pressure reducing valve has been fitted to ensure
the pressure does not exceed 5 Bar. This should be cleared by the installation
engineer before installation.
WATER TEMPERATURE REQUIREMENTS
Maximum hot water temperature = 80˚C, Recommended maximum = 65˚C.
Minimum hot water temperature = 55˚C, Maximum cold water temperature = 20˚C.
TEMPERATURE ADJUSTMENT RANGE
The mixed water temperature can be adjusted from cold through to hot. There is a safety stop
preset at a set temperature of about 38°C.
In the event of failure of cold water system, the valve automatically reduces the flow of hot water
to prevent scalding. It will only operate again once the flow of cold water has been resumed.
Before proceeding with the installation check all the components in the component list are
present.

INSTALLATION
WARNING!
The mixer valve should be fitted only after all the pipework has been installed and ensure no
pipes or wires are behind where the screws will be required.
Do not modify or use jointing compounds on any of the pipe fittings. Do not solder fittings near
the mixer valve as heat can damage the valves or seals. Always flush the system prior to install-
ing the valve.
Before installing, make sure the mixer valve is kept in a clean place to prevent any rubbish etc,
getting into the openings while fitting the pipework.
• The mixer valve is suitable for installation on a solid wall, a stud partition wall, dry lined wall
or fixing to a cubicle or panel.
• The water pipes should be securely attached within the wall or panel to support the mixer
valve and prevent movement or water noise after installation.
• The mixer valve hot water inlet has a red symbol next to the inlet and must be on the left
hand side with the outlet pointing upwards.
• The mixer valve is designed to work at the same hot and cold water pressures. If this is not
the case a flow controller (disc with small holes) can be fitted to the higher pressure supply
to the valve. This is best done by testing each one to find out which gives the best results.
• The mixer valve will be installed in such a position that the maintenance of the TMV
and its valves and the commissioning and testing of the TMV can be undertaken.
SITING OF THE MIXER VALVE
Position the mixer valve so that all controls can be comfortably reached while using the shower.
NOTE: Easily accessible suitable service valves (complying with Water Regulations
Advisory Service www.wras.co.uk). MUST be fitted as close as practical to the valve,
on the hot and cold water supplies to the shower as an independent means of
isolating the water supplies should maintenance or servicing be necessary. These
valves should not restrict the flow.
The supply pipework can be plumbed from above or below but must finish at the suitable
connections, which should be 155mm centers. If installing into a stud partition etc, the pipework
will need support.
Before fitting the mixer valve flush out the pipework in accordance with Water Regulations
Advisory Service (www.wras.co.uk).
3

4
SITING OF THE SHOWER
Establish the position of the mixer valve so that all controls can be comfortably reached whilst
using the shower. Make sure any cables and pipework are not behind the required screw holes.
There are three options available with this mixer valve:
• Concealed Valve with Wall Arm - Atmos Zone
• Concealed Valve with Wall Arm - Atmos Zinc
• Concealed Valve with Ceiling Arm - Atmos Zinc
Consult the illustration below to make sure you check from the component list that all the parts
for your system are supplied.
Concealed valve
with Wall Arm
Atmos Zone
Concealed valve
with Wall Arm
Atmos Zinc
Concentric
Mixer Valve
Overhead
Concealed valve
with Ceiling Arm
Atmos Zinc
Concentric
Mixer Valve
Wall Arm
Concentric
Mixer Valve
Overhead
Wall Arm
Overhead
Ceiling
Arm

PRESSURE BALANCING
Pressure balancing when the feed water pressure is different between hot and cold feeds.
The thermostatic mixer valve is designed to work best when the feed pressures of both hot and
cold water are the same. If there is a difference in pressure it will cause the flow of water through
the valve to pulse rather than being a steady flow. This pulsing can be reduced by putting one of
the metal disks with holes (Fig1-3) into the higher pressure feed to the valve. This restricts the
flow and reduces the pulsing).
To maximise the volume of water through the valve the disk with the most holes should be tried
first. If this does not work the others should be tried until a satisfactory result is obtained.
If the water pressures to hot and cold are the same these disks do not need to be used.
CONCENTRIC VALVE SET-UP
1. Your thermostatic concentric mixer valve is set up in the factory so that a shower hose
can be fitted. This means that when the valve is fitted with the hot water coming in from
the left hand side, indicated by the red spot, the water outlet is on the bottom of the
valve and has a ½” BSP threaded male outlet (See Fig 4).
2. Alternatively when fitting the overhead rail use an allen key:
a) Remove the ½” outlet (See Fig 5)
b) Remove the plug (See Fig 6)
c) Insert the plug in the bottom outlet (See Fig 7)
d) Insert the ¾” outlet where the plug was (See Fig 8)
e) Ensure in all instances the ‘O’ rings are on the components and the
components are tightened.
3. It is advisable prior to installation to remove the 90 degree elbows (See Fig 9), smear
the ‘O’ ring with petroleum jelly and re-fit using PTFE tape on the thread.
5
1 2 3
4
Hot Water
1/2” Male

6
CONCEALED VALVE FITTING FOR Atmos Zinc/Zone
1. A circular hole between 140mm and 168mm should be enough to fit the mixer valve.
The valve should be fixed to the wall between 50mm and 70mm below the finished
surface of the shower (See Fig 10).
2. The supply pipework can be plumbed from above or below but must finish at the
suitable connections which should be at 155mm centers. Connect the 15mm pipework
using standard compression nut and olives (See Fig 11).
NOTE: Make sure the mixer valve is kept in a clean place to prevent rubbish etc, getting
into the openings while fitting the pipework.
You should measure the distance between the outlets on the mixer valve you are
fitting to determine the exact distance.
3. Complete the fitting of the pipework and the tiling leaving the pipework as shown.
The wall plate should be attached firmly between 50mm and 70mm below the finished
surface. Remove the back plate from the mixer valve by removing the retaining screws.
Put the plate in the centre between the feed pipes and mark the screw positions, check
this fits by holding the mixer valve in position. Drill plug and screw the back plate to
the wall (See Fig 12).
55mm
Minimum
11 12 13
Approx 155mm
10
5 6 7
8 9
Hot Water
Hot Water
Hot Water
Plug
Hot Water
Plug
Hot Water
Outlet

7
4. Position the mixer valve onto the two water feed pipes and onto the wall bracket.
Tighten up the compression nuts to hold the mixer valve in place. Make sure the
mixer valve outlet is pointing down and the hot feed is onto the left side marked with a
red indicator (See Fig 13).
NOTE: It is possible to move the outlet to the top of the valve by reversing the plug and
threaded outlet.
5. Replace the locking screws to hold the mixer valve on the wall plate (See Fig 14).
6. A pipe must be fitted from the outlet of the mixer valve to the location of where you
wish to position the outlet. Depending on the option this pipe must have a ½” female
connection attached into which the outlet can be fitted.
NOTE: Once the mixer valve and outlet are fitted, prior to fitting the trim plate ensure all
connections are watertight. This can be done by reconnecting the water supplies and
checking the connections when running the shower and when the shower is off.
TRIM PLATE FITTING FOR Atmos Zinc/Zone
1. The trim plate is fitted by pushing it onto the mixer valve until flush with the tiles
(See Fig 15 & 16).
NOTE: Before assembling the valve controls identify all the parts and check that red
markings on the thermostatic cartridge are inline.
ASSEMBLING FRONT OF VALVE FOR Atmos Zinc
1. Fit the flow control knob onto the large spline, aligning arrow with the line on the
line on the main body with the lever pointing down (See Fig 17).
2. Fit the stop ring onto the middle spline aligning the V notch with the arrow on the
flow control lever, then hold firmly in position and tighten the grub screw using
the allen key supplied (See Fig 18).
3. Fit the temperature control knob with the arrows inline and the override button
on the right hand side. Hold firmly in position and tighten the grub screw with allen
key supplied. Then fit cap to hole on the temperature control knob (See Fig 19).
Wall
14 15 16

8
NOTE: Test water temperature by turning the flow control lever clockwise. Allow the water
to stabilise, this should be at approximately 38˚C. Use a thermometer to accurately
measure this temperature.
WALL ARM FITTING FOR Atmos Zinc/Zone
1. Establish position of wall arm to suit users requirements (See Fig 20).
2. When fitting the wall arm drill a suitable 19mm hole through the wall.
NOTE: When fitting to stud wall a bearer between the uprights maybe required.
3. Remove fittings and nuts from end of arm and push arm through wall, re-fit washer
and nut.
4. Connect mixed water outlet using compression and fittings.
5. When attaching a fixed overhead make sure the sealing washer is in place and
screw tight to seal the joint (See Fig 21).
Flow
Control
Knob
Large Spline
Trimplate
Spline
Trimplate
Stop Ring
Spline
Trimplate
Temperature
Control Knob
Stop Ring
19
17 18
2120

9
WALL ARM FITTING FOR Atmos Zinc/Zone
1. Establish position of wall arm to suit users requirements (See Fig 22).
2. When fitting a ceiling arm you will have to fit a cross bearer between two joists.
Drill suitable 19mm hole through ceiling (See Fig 23).
3. Remove fittings and nuts from end of arm and push arm through wall, re-fit washer
and nut.
4. Connect mixed water outlet using compression and fittings.
5. When attaching a fixed overhead make sure the sealing washer is in place and
screw tight to seal the joint.
2322

10
COMMISSIONING AND ANNUAL MAINTENANCE TESTING
On commissioning carry out the following checks and tests:
• Allthepipeworkhasbeenushedthroughbeforettingthevalve
• Thevalveyouhavepurchasedmatchestheinstallation
• Thesupplypressuresandtemperaturesarecheckedandallareintherange 
specified in the instructions
• Theisolationvalvesandstrainersarettedandcleanofanyunwantedmaterialanddo
not restrict flow
Ensure both isolation valves are fully open. Turn the temperature control to cold and turn the
flow on. Check the temperature is at the required minimum. Rotate the temperature controller
gradually until it reaches the preset stop let it flow until the hot water has reached the valve and
the temperature has stabilized. Check the temperature is 38˚C =/-2˚C. This is the valves factory
preset.
Note: If your temperature is not 38˚C the following operation should only be carried
out by a competent TMV engineer. To adjust the temperature at the stop to 38˚C,
this can be achieve by the following;
Firstly position the temperature control knob at the stop. Remove the temperature control knob
by undoing the grub screw. Then turning the splined shaft clockwise to decrease the temperature
(colder) or anti-clockwise to increase the temperature (hotter) when you have achieved a
temperature of 38˚C, re-assemble the temperature control knob.
Override the stop by pressing the button and rotate to maximum being careful to avoid scalding.
Measure the temperature.
The valve should then be checked to confirm the water isolation performs correctly. Run the
valve at the 38˚C stop position. Check the water temperature. Turn off the feed of cold water
using the isolation valve. The water flow should fall to a very low flow, (possibly only a drip) after
a few seconds. Collect the water after 5 seconds and 30 seconds and measure the temperature
it should be below 46˚C +/- 2˚C . Turn on the cold water again and it should return after a few
seconds to stabilise to 38˚C +/- 2˚C.
Adjustment of the temperature settings is only to be carried out by a competent TMV engineer
as it is a technically difficult operation in which the valve can be easily broken. It can be done
by removing the handle on the temperature controller, (noting carefully the assembly of the
components), rotating the internal stops a few degrees in the required direction and then
reassembling. All the commissioning checks should be redone again to ensure it now meets
the required specification before using the shower.

11
PROBLEM
1. Water too hot.
2. Water too cold.
POSSIBLE CAUSE
ATemperature control is not
correctly commissioned.
BNot enough cold water flowing
through shower.
CIncrease in the ambient cold
water temperature.
DCold water supply blocked.
EHigh volume of cold water drawn
off elsewhere.
FCold water filter blocked.
ATemperature control is not
correctly commissioned.
BNot enough hot water flowing
through shower.
CDecrease in the ambient cold
water temperature.
DHot water filter blocked.
EInsufficient hot water supplies
from the heating system.
FHot water supply blocked or
restricted.
GPressure in excess of max
recommended.
SUGGESTED ACTION
Adjust the temperature
control - this is only a job for a
suitably qualified person.
Turn temperature control
clockwise.
Turn temperature control
clockwise.
Turn off shower and consult a
competent plumber.
Reduce the simultaneous
demand from the supply.
Remove valve and clean
filters.
Adjust temperature control.
Turn the temperature
control anti-clockwise.
Turn the temperature
control anti-clockwise.
Remove valve and clean
filters on the inlet.
Make sure the hot water
is available by trying a hot
water tap elsewhere in the
house.
Turn off shower and
consult a suitably competent
plumber.
Fit pressure reducing valve.

12
PROBLEM
3. Water does not
flow or shower
pattern
collapses
when another
outlet is
turned on.
4. Shower
controls noisy
whilst in use.
5. Shower will
not shut off.
POSSIBLE CAUSE
AWater supplies cut off
BBlockage in pipework.
CValve filters blocked by debris in
water supply.
DShowerhead blocked.
ESystem not capable of supplying
multiple outlet at the same time.
ARunning pressure in excess of
maximum recommended.
AFlow control cartridge worn.
SUGGESTED ACTION
Check elsewhere in house
and if necessary contact
local water company.
Turn off shower and
consult a suitably competent
plumber.
Remove valve and clean
filters.
Clean Showerhead.
Reduce simultaneous
demand. Check stop/service
valves are fully open. Check if
enough water pressure.
Fit reducing disc to outlet of
valve.
Renew flow control cartridge
see parts list.
COMPONENTS LIST
Atmos Zone (HLZ)
Description Quantity
Brass Concentric Mixer Valve 1
Filter Washer 2
Plain Washer 2
Screw Pack,
(3 screws + 3 plugs) 1
Allen key (small) 1
Valve Nut Covers 2
Concealed Arm Cover 1
Pressure Balance (15mm), 1
Flow Restrictor Kit 1
Shower Overhead 1
Standard Arm Chrome 1
Fitting Instructions 1
TMV Registration card 1
Atmos Zinc (HMG/HMQ)
Description Quantity
Brass Concentric Mixer Valve 1
Filter Washer 2
Plain Washer 2
Screw Pack,
(3 screws + 3 plugs) 1
Allen key (small) 1
Pressure Balance (15mm), 1
Flow Restrictor Kit 1
Ceiling/Wall Overhead Fixed Arm 1
Shower Overhead 1
Fitting Instructions 1
TMV Registration card 1

13
ACCESSORIES KIT SPARE PARTS
Atmos Zinc
1. Fixed Overhead ZLK
2. Wall Arm ZLJ
3. Ceiling Arm ZLI
4. Valve only 36HLW ZLD
VALVE SPARE PARTS LIST
5. Fitting Kit 36HLW ZJK
6. Cartridge All in one ZJA
7. Square Cover Plate ZJW
1
2
34
5
6
7

14
ACCESSORIES KIT SPARE PARTS
Atmos Zone
1. Fixed Overhead ZLS
2. Valve only 36HLW ZLG
VALVE SPARE PARTS LIST
3. Fitting Kit 36HLW ZJK
4. Cartridge all in one ZJA
5. Cover Cover Plate ZJV
1
2
3
4
5

MX GROUP GUARANTEE
Marleton Cross Limited and its subsidiaries (“MX Group”) hope you are satisfied with your
purchase and in the unlikely event that you encounter a problem which is caused exclusively by
MX Group manufactured product (the “product”) we will take responsibility on the terms set out
here.
We guarantee this product, in the following terms, for a period of 5 years, from the date of
delivery, against mechanical defects arising from faulty materials or from poor workmanship,
providing the product has been:
• Installed in accordance with the fitting instructions (oral or written), technical information
supplied and/or associated advertising; and
• Used strictly in accordance with all our instructions (oral or written), associated advertising
and technical data (including product information and specification sheets) current at the
time of purchase and good working practice.
MX Group at their discretion undertake to repair or replace without charge, provided the
product has been properly installed, maintained and operated in accordance with the operating
instructions.
This product must not be modified, repaired or taken apart except by a person authorised by MX
Group.
What is not covered by this guarantee:
1. Any product found to be defective during this period, as the result of misuse or
damage, or the effects of scaling, will not be covered by this guarantee.
2. Breakdown due to:
  •Useotherthandomesticusebyyouoryourresidentfamily
  •Wilfulactorneglect
  •Anymalfunctionresultingfromtheincorrectuseorqualityofwateror 
incorrect setting of controls; and
  •Faultyinstallation.
3. Repair costs for damage caused by foreign objects of substances or the inappropriate
use of jointing compounds or blow torches.
4. Total loss of the product due to non-availability of parts or other reason, (MX Group
will maintain stocks of spare parts for repair for at least 5 years from end of product
line to cover this guarantee).
5. Compensations for loss of use of the product or consequential loss of any kind.
6. Call out charges where no fault has been found with the appliance.
15

7. The cost of repair or replacement of pressure relief devices, showerheads, hoses,
riser rails and/or wall bracket, tiles, cubicles or any other parts installed at the same
time.
8. The cost of routine maintenance, adjustments, overhaul modifications or loss or
damage arising there from, including the cost of repairing damage, breakdown,
malfunction caused by corrosion, furring, pipe scaling, limescale, system debris or
frost.
9. Units purchased and installed other than in the United Kingdom.
LIMITATIONS
1. This guarantee lasts for a single continuous period of 5 years from the date of delivery
by MX Group to you the customer.
2. This guarantee is personal to the original purchaser of the product and is not
transferable.
3. Original proof of purchase(s) must be shown for any claim under this guarantee.
4. This guarantee does not cover any products that have been modified, altered or
transformed in any way.
5. This guarantee applies to an original installation in accordance to our fitting
instructions and does not cover previously installed products (showroom displays
etc) or products that have been moved from their original installation position for
any reason.
6. This guarantee applies only to manufacturing or material defects. It does not apply to
normal wear and tear, accidental damage, inappropriate use (including inappropriate
cleaning) or other events outside the manufacturer’s control.
7. This guarantee applies only to the product itself and any liability on behalf of MX
Group is limited to the cost of the product.
8. If a product is deemed to be of faulty manufacture MX Group will at their discretion
replace or repair the product. Any related consequential loss or damage is excluded.
9. No claim will be accepted if a product is installed with a fault (ours or otherwise)
that would have been clearly evident before installation.
10. We make no representations, and exclude any and all liability, in respect of any third
party products or services supplied by way of extensions to this guarantee.
16

LIABILITY
1. Except as required or agreed by us, you will not in any circumstances return any of the
product to us, and where the property in any of the goods returned to us has
passed to you, they will nevertheless remain your property and at your risk unless we
have agreed otherwise in writing before their return.
2. Except as stated above, we will not be liable for any direct, consequential or other
loss, damage or injury suffered or incurred by you, and you will indemnify us fully
against any claims made by third parties, in respect of the goods or otherwise arising
from the contract.
3. Nothing contained in the contract will be treated as excluding or restricting any
liability on our part for death or personal injury resulting from our negligence.
4. Except as stated above, and to the fullest extent permitted by law, all conditions,
warranties and representations, whether express or implied, statutory or otherwise
in relation to the product (other than such as relate to title to the product) are
excluded.
5. You acknowledge that our prices for the goods reflect these Terms and Conditions,
and accordingly that you accept the above limitations on and exclusions of liability in
exchange for those prices.
6. When providing information to MX Group you understand that you are doing this
subject to our terms and other policies (including data protection) we have in place
from time to time, copies of which are available on our website www.mx-group.com
or on request as per MX Group contact details given herein.
7. This guarantee does not affect your statutory rights.
17

MX GROUP GUARANTEE SERVICE POLICY
In the event of you needing to contact the MX Group Customer Care Department, the following
procedure should be followed:
1. Before telephoning on 0845 505 2211 the MX Group Customer Care Department you
should ensure you have the model number (printed on the valve) and date and proof of
purchase your contact details and the postcode where the unit is installed.
2. The MX Group Customer Care Department will be able to tell you whether the fault
can be simply rectified by the provision of a replacement part or arrange an on site
visit by a Qualified Service Engineer.
3. If a service call is required it will be booked and the date of the call confirmed. You or
a representative (over the age of 18 years) must be present during the entire
engineers visit. The engineer will not be able to repair or replace or advise on parts or
products not supplied as part of the product.
4. A charge will be made in the event of a service call aborted by you, but not by us, or
where a call under the terms of guarantee has been booked and failure is not related
to product supplied by MX Group (i.e Scaling and furring, incorrect water pressure, or
other plumbing problem unrelated to the normal function of the products).
5. If the product is no longer covered by the guarantee, a charge will be made for the site
visit and for any parts supplied.
6. Service charges are based on the account being settled when the work is complete.
The engineer will request payment. If this is not made on the day or settled within ten
working days, and administration charge will be added.
SPARE PARTS
In the event that parts or maintenance is needed outside the guarantee MX will endeavour to
help with this. Spare parts codes are given in the fitting instructions. By calling the Customer
Care Department on 0845 505 2211 with the part number, they will be able to quote you to
supply these parts.
18

Marleton Cross Limited Trading as The MX Group,
Alpha Close, Delta Drive,Tewkesbury Industrial Estate,Tewkesbury, Glos. GL20 8JF.
www.mx-group.com email: mixerval[email protected]om
Customer Care: 0845 505 2211
6752A 08_13_LH