Triton COMBI 2180206H User manual

Installation and
operating
instructions
Combi HP
Thermostatic
mixer shower
T00219
2180206H March 2007
Installers please note these InstructIons are to be left wIth the user

Combi HP thermostatic mixer shower
Introduction 1
Safety warnings 1
Main components 2
Siting requirements 3
Typical suitable installations 4
Preparing the mixer valve 6
Siting of the shower 6
Fitting the shower to the wall - Exposed 7
Rising and falling supplies 7
Rear entry supplies 10
Fitting the shower to the wall - Built-in 13
Solid wall 13
Hollow wall 16
Shower cubicle or panel 18
Flushing procedure 20
Fitting the tamperproof fixed head - Exposed 21
Fitting the tamperproof fixed head - Built-in 22
Fitting the fixed head - Built-in 23
Fitting the bulkhead 24
Operating the shower 25
Adjusting the maximum temperature stop 26
Spare parts 27
Fault finding 29
Guarantee, service policy, etc. rear cover
CONTENTS Page
To check the product suitability for commercial and multiple installations, please contact
Triton’s specification advisory service before installation.
Telephone: [phone]
Facsimile: 0870 067 3334
E mail: [e-mail]

1
Combi HP thermostatic mixer shower
INTRODUCTION
SAFETY WARNINGS
C-006-A
INTRODUCTION
T
his book contains all the necessary fitting and
operating instructions for your Triton high
pressure thermostatic mixer shower. Please read
them carefully.
Please read through the whole of this book
before beginning your installation.
T
he installation MUST be carried out by a
suitably competent person and in sequence of
this instruction book.
Care taken during the installation will give a long
and trouble free life from your mixer shower.
T
hermostatic mixers will automatically maintain
y
our chosen temperature, even if taps are turned
on elsewhere in the house, and shut off if either
the hot or cold supply fails.
For the best performance within the specified
running pressure range a minimum flow of
eight litres per minute should be available to
both inlets.
T
he mixer shower MUST NOT be subjected to
w
ater temperatures above 80°C.
T
his mixer is designed to operate on higher
pressure systems found in the UK up to a
maximum of 5 bar running pressure.
T
he high pressure valve is suitable for modulating
type combination boilers and multi-point hot
w
ater heaters. It 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 litres per minute. At
fl
ow rates between 3 and 8 litres per minute,
the appliance must be capable of raising the
w
ater temperature to a minimum of 52°C.
T
he water temperature at the inlet to the mixer
must remain relatively constant when flow rate
adjustments are made.
Inlet connections are by compression fittings for
15mm copper pipe.
T
his valve unit is supplied with a mounting
bracket to suit installation in a chased out cavity
in a solid wall, a stud partition wall, dry lined wall
or fixing to a shower cubicle or panel.
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.
The outlet of this appliance MUST NOT be
connected 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 isolating valves in each
inlet supply MUST be fitted as an
independent method of isolating the shower
should maintenance or servicing be necessary.
If it is intended to operate the shower in areas
of hard water (above 200 ppm temporary
hardness), a scale inhibitor may have to be
fitted. For advice on the Triton scale inhibitor,
please contact Customer Service.
Do not operate the shower outside the
guidelines as laid out in ‘site requirements’.
a.
b.
c.
d.
e.
f.
g.
Y-002-A
Y-003-A
Replacement parts can be ordered from Customer
Service. See ‘spare parts’ for details and part numbers.

2
Combi HP thermostatic mixer shower
1. Inlet nuts and olives
2. Inlet elbows
3. Valve housing
4. Outlet adaptor
5. Outlet nut and olive
6. Outlet blanking plug
7. Cartridge assembly
8. Flow knob
9. Temperature knob
10. Knob trim
11. Max. temperature override
button
12. Cover
13. Inlet trims
14. Outlet trim
15. Outlet blanking trim
16. Flush mount plate
17. Flush mount cover
18. Trim ring
19. Cartridge fixing screws
20. Nut covers
21. Pipe trims
22. Hexagonal nut
23. Shroud (flush fit only)
MAIN COMPONENTS
MAIN COMPONENTS
(fig.1)
T00220
Fig.1
1
2
3
4
5
6
7
8
910
11
12
1
2
13
14
15
16
17
18
19
20
21
19
19
20
18
20
13
22
23

3
Combi HP thermostatic mixer shower
SITING REQUIREMENTS
D-003-A
SITE REQUIREMENTS
The installation must be in accordance with
W
ater Regulations/Bylaws.
Minimum running water pressure: 1 bar.
Maximum running water pressure: 5 bar.
Maximum static water pressure: 10 bar.
For the best performance within the specified
pressure range both hot and cold water supplies
must be fed from a common supply and a
minimum flow of 8 litres per minute should be
available to both inlets.
W
hile the mixer valve is operational (open
outlet), inlet pressures MUST NOT be capable of
exceeding 7 bar. For effective operation of the
internal seals, the maximum static pressure must
not be exceeded.
Note: On sites where the running pressure is
above 5 bar, the use of a suitably sized pressure
reducing valve fitted in the cold mains supply
pipework can provide nominally equal pressures
at the mixer valve. This should be installed as
indicated on the appropriate diagrams shown on
the following pages, and set to within the
specification of the valve.
For the best performance of this shower both hot
and cold water supplies to the shower valve
should be fed at nominally equal pressures.
The pipework should be installed such that the
fl
ow is not significantly affected by other taps
and appliances being operated elsewhere on the
premises.
Note: Where thermal store/combi boilers or
multi-point heaters are used, if excessive draw
offs take place the boiler may not be able to
maintain an adequate output temperature. This
could result in the shower temperature becoming
noticeably cooler.
For effective thermostatic control the
temperature of the hot water entering the mixer
should remain a minimum of 10°C above the
selected output temperature.
The supply pipework must be flushed to clear
debris before connecting to the shower control
accordance with Water Regulations and Bylaws.
DO NOT use jointing compounds on the
pipework.

4
Combi HP thermostatic mixer shower
a) Instantaneous gas-heated showers,
e.g. combination boilers (fig.2)
The shower control MUST be installed with a
multipoint gas water heater or combination
boiler of a fully modulating design (i.e. where
the water draw-off rate indirectly controls the
gas flow to the burner). A drop tight pressure
reducing valve MUST be fitted if the supply
pressures exceed 5 bar maintained.
An expansion vessel (shown in fig.2) MUST be
fitted, and regularly maintained, to make sure
the unit is not damaged by excess pressures.
This may already be installed within the boiler
(check with manufacturer) and is in addition to
the normally larger central heating expansion
vessel.
The layout and sizing of pipework must be
such that nominally equal inlet supply pressures
are achieved and the effects of other draw-offs
are minimised. The hot supply temperature
MUST remain a minimum of 10°C hotter than
the required blend temperature for the best
performance.
b) Pump assisted gravity fed systems
(fig.3)
The pump MUST be fed from a cold water
cistern and hot water cylinder providing
nominally equal pressures. The pump must be
capable of maintaining a minimum running
pressure of 1 bar.
c) Unvented mains pressure showers
(fig.4)
The shower control can be installed with an
unvented, stored hot water cylinder.
For systems with no cold water take off after the
appliance reducing valve, it will be necessary to
fit an additional drop tight pressure reducing
valve when the mains pressure is over 5 bar. The
drop tight pressure reducing valve MUST be
set at the same value as the unvented package
pressure reducing valve.
Note: An additional expansion vessel (fig.4)
may be required if a second pressure reducing
valve is installed. This does not apply to
TYPICAL SUITABLE INSTALLATIONS
TYPICAL SUITABLE INSTALLATIONS
T00221
CH flow
Cold
mains
supply
Hot water
Expansion
vessel
CH return
Service
valves
Shower
mixer
valve
Stop tap
Pressure
reducing valve
Combination
boiler
Fig.2 diagrammatic view (not to scale)
T00222
Hot water
cylinder
Cold supply
Hot
supply
Cold
water
mains
supply
Drain
valve
Gate
valve
Cold water
cistern
Other
draw-offs
Draw-off must point
down to avoid airlock
issues
Ring main
Isolating switch
or pull cord
switch (both
fused at 3A)
Alternative
supply
(must be
below
vent pipe tee)
Service
valve
Service
valve
Stop valve
Mixer
Valve
Riser
rail
Pump
Fig.3 diagrammatic view (not to scale)

5
Combi HP thermostatic mixer shower
packages with a cold take off after the pressure
reducing valve to the cylinder.
The layout and sizing of pipework must be such
that nominally equal inlet supply pressures are
achieved and the effects of other draw-offs are
minimised.
d) Mains pressurised thermal store
(fig.5)
Packages of this type, fitted with a tempering
valve (blender valve) can be used. A drop tight
pressure reducing valve MUST be fitted if the
supply pressures exceed 5 bar maintained.
An expansion vessel (shown in fig.5) MUST be
fitted, and regularly maintained, to make sure
the unit is not damaged by excess pressures. This
may already be installed externally or internally
within the thermal store (check with thermal store
manufacturer).
The layout and sizing of pipework MUST be such
that nominally equal inlet supply pressures are
achieved and the effects of other draw-offs are
minimised.
T00223
Service
valves
Balanced cold
mains supply
Cold mains supply
Mixer
shower
Expansion
vessel
Pressure
reducing valve
Pressure
reducing valve
Stop tap
Unvented
hot water
storage unit
Safety devices
not shown
Fig.4 diagrammatic view (not to scale)
Blender
valve
Flow
Cold mains supply
Hot
water
Stop tap
Expansion
vessel
Pressure
reducing valve Return
Service
valves
Mixer valve
Boiler
T00224
Fig.5 diagrammatic view (not to scale)

6
Combi HP thermostatic mixer shower
Height of
showerhead
and shower
to suit user’s
requirement.
Shower can be
mounted either side
of the riser rail
T00225
Before starting the installation, make sure all the
openings on the valve are carefully covered to
prevent ingress of any debris etc.
Note: It is not necessary to remove the control
knobs at any stage.
SITING OF THE SHOWER
SITING OF THE SHOWER
W-008-A
WARNING!
The shower must not be positioned
where it will be subjected to freezing
conditions.
Refer to fig.6 for correct siting of the shower.
Position the shower and showerhead on the wall
so that all controls can be comfortably reached
while using the shower. The showerhead and
riser rail can be positioned either side of the
shower.
Note: Pipe entry for both surface-mounted and
flush-fitted valves can be from the top, bottom
or rear.
The hot entry port is on the left-hand side of the
valve and is marked on the valve with a letter ‘H’
(fig.7).
PREPARING THE MIXER VALVE
PREPARING THE MIXER VALVE
Fig.6 diagrammatic view (not to scale)
T00226
Fig.7
Surface-mounted illustrated

7
Combi HP thermostatic mixer shower
Exposed
Note: The outlet of the shower must not be
connected to anything other than the hose and
showerhead supplied.
DO NOT use jointing compounds on any pipe
fittings for the installation.
DO NOT solder fittings near of the shower unit,
as heat transfer can damage components.
Note: Suitable isolating valves (complying with
Water Regulations) must be fitted on the hot
and cold water supplies to the shower as an
independent means of isolating water supplies
should maintenance or servicing be necessary.
When connecting pipework avoid using tight
90° elbows. Swept or formed bends will give the
best performance.
IMPORTANT: The water circuit should be
installed such that the flow is not significantly
affected by other taps and appliances being
operated elsewhere on the premises. Water
pressure must not fall below specification of
the shower.
Note: The hot water pipe entry must be on the
left.
Rising and falling supplies
Having decided on the position of the shower
and direction of pipe entry, complete the
pipework to the shower area.
Note: The final separation between pipe
centres needs to be about 153 mm but absolute
accuracy is not needed as the inlet elbows are
adjustable between 146 mm and 160 mm.
Flush pipework to clear the system of all
debris and check for leaks.
IMPORTANT: The inlet elbows contain check
valves that may be damaged if debris is not
flushed through prior to fitting.
Where this is not possible refer to the ‘flushing
procedure’ on page 20.
Clip the pipework to the wall surface so that the
pipe centres are 21 mm off the wall.
Offer the valve, together with the inlet elbows,
to the pipework. Make sure the inlet elbow grub
FITTING THE SHOWER TO THE WALL - EXPOSED
FITTING THE SHOWER TO THE WALL
T00227
Fig.8
T00228
==
Fig.9
T00229
Fig.10
T00230
T00231
/RQJ
VLGH
Fig.11 Fig.12

8
Combi HP thermostatic mixer shower
T00022
Hose end
(flat)
Pipe end
(chamfered)
screws are slack allowing the inlet elbows to
rotate to the correct position and move freely in
and out of the valve housing (fig.8).
Place the valve housing centrally between the
two pipes, and mark the two diagonal fixing
holes (figs.9 and 10).
Remove the valve. Drill and plug the holes. (The
wall plugs supplied are suitable for most brick walls
— use an appropriate masonry drill, but if wall is
plasterboard or a soft building block, you must use
suitable wal lplugs and an appropriate drill bit).
Fit the nut covers on to the pipes (fig.11).
Note: Slide the pipes into the small diameter
end of the nut cover. It will not fit if inserted
from the other end.
Slide the inlet nuts and olives onto the pipes,
followed by the inlet trims.
Note: The holes in the inlet trims are offset to
allow for adjustable inlet pipe separation widths.
If pipe centre separation is 153 mm or less, then
have the short side of the inlet trims between
the pipes. If the pipe separation gap is 153 mm
or greater, have the long side of the inlet trims
between the pipes (fig.12). If in any doubt try
the cover to see if it fits properly (i.e. no visible
gaps between the inlet trims and the cover —
fig.13). If there is a gap (fig.14) then reverse
the trim.
While trying the cover make sure the inlet nuts
are sitting in the holes in the inlet trim holes so
that the inlet trims are at the correct separation.
Having positioned the inlet trims correctly, refit
the valve to the pipework. Make sure the hot
inlet port (marked with the letter ‘H’ on the
valve housing) is connected to the hot pipework
which must be on the left.
Screw to the wall with the two screws supplied
(fig.15). Tighten the inlet nuts and inlet elbow
grub screws.
If installing a tamperproof fixed head, fit the
outlet adaptor into the top outlet hole in the
valve housing (fig.16). The adaptor is sealed
with an ‘O’ ring. Make sure the adaptor is fitted
with the hose end in the valve housing. Fit the
blanking plug into the bottom outlet hole using
an ‘O’ ring to seal it.
T00232
T00233
Fig.13 Fig.14
T00234
Fig.15
T00237
Outlet
Adaptor
‘O’ Ring
Fig.16
Fig.17

9
Combi HP thermostatic mixer shower
If installing a riser rail, fit the outlet adaptor into
the bottom outlet hole in the valve housing. The
adaptor is sealed with an ‘O’ ring.
Make sure the adapter is fitted with the pipe end
in the valve housing (fig.17)
Fit the blanking plug into the top outlet hole
using an ‘O’ ring to seal it (fig.18). Make sure
both the adaptor and blanking plug do not
protrude, and finish flush with the inner face of
the housing.
If fitting a tamperproof fixed head, refer to
‘Fitting the tamperproof fixed head’ section and
complete the outlet pipework as follows:
Determine the required height of pipe and cut to
size. Slide nut cover onto the pipe, followed by
nut and olive. Insert the pipe into outlet adaptor,
place the outlet trim onto the adaptor and fully
tighten the compression nut (fig.19).
Before securing the tamperproof fixed head to
the wall, connect a hose to the pipework and
direct to waste.
If fitting a riser rail, connect the shower hose to
the outlet and direct to waste.
Open the isolating valves to the shower and
flush through making sure the flow control
is opened fully and the temperature control
is rotated to ‘HOT’ and then to ‘COLD’ (if
necessary depress the maximum temperature
override button). Check for any leaks and
remedy if necessary.
Slide the outlet blanking trim onto the cover
where it is required i.e. bottom outlet for fixed
head, top outlet for a hose (fig.20).
Fit the cover on and secure with two screws
(fig.21). Locate the lugs on the trim ring in the
holes on the cover and twist clockwise (fig.22).
Finally, pull nut covers over nuts.
Complete the fitting of the shower accessories
by referring to the appropriate section.
T00238
Fig.18
T00241
Fig.21
Outlet
trim
T00239
Fig.19
T00240
Fig.20

10
Combi HP thermostatic mixer shower
Rear entry supplies
Note: The final separation between pipe
centres needs to be about 153 mm but absolute
accuracy is not essential as the inlet elbows
are adjustable between 146 mm and 160 mm
(fig.23).
Using a spirit level, mark the route of incoming
hot and cold water supply pipes at a distance of
153 mm centres.
Remove the plaster and brickwork to the
required depth to conceal the supply pipework.
Note: It is advisable that pipework installed
in solid walls be provided with enough free
play inside a cavity to allow entry into the inlet
elbows for tightening, before securing the valve
to the finished wall surface.
Install the hot and cold pipework — the hot pipe
must enter from the left. Make sure the finished
pipework projects from the front face of the tiled
surface of the wall by 9.5 mm (fig.24).
Allow for two circular recesses measuring 32 mm
diameter by 14 mm depth, to accept the rear
entry pipe trims (fig.23).
Flush pipework to clear the system of all
debris and check for leaks.
IMPORTANT: The inlet elbows contain check
valves that may be damaged if debris is not
flushed through prior to fitting.
Where this is not possible refer to the ‘flushing
procedure’ on page 20.
Make good the wall and complete the tiling.
Check that the rear entry pipe trims are sealed in
with either silicon sealant or grout (fig.24).
Note: Failure to fit the rear entry pipe trims
could result in the entry of water into the wall
cavity.
Offer the valve, together with the inlet elbows,
to the pipework making sure the inlet elbow
grub screws are slack allowing the inlet elbows
to be rotated to the correct position and move
freely in and out of the valve housing (fig.8).
Check that the valve is central between the
two pipes, then mark two diagonal fixing holes
(figs.25 and 26).
T00242
T00244
9.5
mm
Pipe
trim
Inlet
nut
T00243
32 mm
dia.
9.5 mm
153 mm approx
Fig.22
Fig.23
Fig.24

11
Combi HP thermostatic mixer shower
Remove the valve. Drill and plug the holes using
the wall plugs supplied.
Using two hexagonal nuts (supplied), refit the
valve to the pipework. Make sure the hot inlet
port (marked with the letter ‘H’ on the valve
housing) is connected to the hot pipework
which must be on the left.
Tighten the inlet nuts with the spanner supplied
(fig.27) then tighten the inlet elbow grub
screws.
Screw to the wall with the screws supplied.
If installing a tamperproof fixed head, fit the
outlet adaptor into the top outlet hole in the
valve housing (fig.16). The adaptor is sealed
with an ‘O’ ring. Make sure the adaptor is fitted
with the hose end in the valve housing (fig.17).
Fit the blanking plug into the bottom outlet hole
using an ‘O’ ring to seal it.
If installing a riser rail, fit the outlet adaptor into
the bottom outlet hole in the valve housing. The
adaptor is sealed with an ‘O’ ring. Make sure the
adaptor is fitted with the pipe end in the valve
housing (fig.17).
Fit the blanking plug into the top outlet hole
using an ‘O’ ring to seal it (fig.18).
If fitting a tamperproof fixed head, refer to
‘Fitting the tamperproof fixed head’ section and
complete the outlet pipework as follows:
Determine the required height of pipe and cut to
size if necessary. Slide nut cover on to the pipe,
followed by nut and olive. Insert pipe into outlet
adaptor, place the outlet trim onto the adaptor
and fully tighten the compression nut (fig.19).
Before securing the fixed head to the wall,
connect a hose to the pipework and direct to
waste.
If fitting a riser rail, connect the shower hose to
the outlet and direct to waste.
Open the isolating valves to the shower and
flush through, making sure the flow control
is opened fully and the temperature control
is rotated to ‘HOT’ and then to ‘COLD’ (if
necessary depress the maximum temperature
override button). Check for any leaks and
remedy if necessary.
Slide the outlet blanking trim onto the cover
==
T00245
Fig.25
T00247
==
T00246
Fig.26
Fig.27

12
Combi HP thermostatic mixer shower
where it is required i.e. bottom outlet for fixed
head, top outlet for a hose (fig.20).
Fit the inlet blanking trims on the underside of
the cover (fig.28).
Fit the outlet trim over the outlet adaptor and
slide the cover on (fig.19). Secure the cover
with two screws (fig.21). Locate the lugs on
the trim ring in the holes on the cover and twist
clockwise (fig.22).
Complete the fitting of your shower accessories.
T00248
Fig.28
N-004-A
Note: The flush-fitted shower valve comes
complete with a built-in pvc shroud. DO NOT
remove it. It is important when making good
the wall after installation, the plastering and
sealing must be made tight up to the shroud in
order to prevent ingress of water.

13
Combi HP thermostatic mixer shower
FITTING THE SHOWER TO THE WALL - BUILT-IN
FITTING THE SHOWER TO THE WALL
Opening needs
to be at the bottom
if using a bulkhead
200 mm
10 - 12.5 mm
48 mm
50 mm
35 mm
77.5 mm65
mm
220 mm
T00249
Fig.29
T00250
Fig.30
Flush fit
Note: The outlet of the shower must not be
connected to anything other than the hose,
showerhead or fixed showerhead supplied.
DO NOT use jointing compounds on any pipe
fittings for the installation.
DO NOT solder fittings near of the shower unit,
as heat transfer can damage components.
Note: Suitable isolating valves (complying with
Water Regulations) must be fitted on the hot
and cold water supplies to the shower as an
independent means of isolating water supplies
should maintenance or servicing be necessary.
When connecting pipework avoid using tight
90° elbows. Swept or formed bends will give the
best performance.
IMPORTANT: The water circuit should be
installed such that the flow is not significantly
affected by other taps and appliances being
operated elsewhere on the premises. Water
pressure must not fall below the specification
of the valve.
The hot water pipe entry must be on the left-
hand side.
This mixer valve also includes a wall bracket
which allows the installer to mount the shower
into a solid, stud partition or other hollow wall
structures. The bracket can also be used for
fitting in a shower cubicle providing the back of
the cubicle is accessible.
When installing into a stud partition or other
hollow wall structure the installer may wish to
consider building rear supports or other options.
Such options are beyond the scope of this guide.
Solid wall
The building-in depth for the shower into a
solid wall is between 57 mm and 66 mm. The
building-in depth calculation must include the
thickness of the plaster and tiles. This dimension
determines how much of the shower control is
visible through the concealing plate when the
installation is completed.
Decide on the shower position and whether
the hot and cold water supplies will enter the

14
Combi HP thermostatic mixer shower
T00251
T00253
Seal tight up
to shroud
T00252
Fig.31
Fig.32
Fig.33
shower from the top (falling), the bottom (rising)
or the rear.
Mark the route of the incoming and outgoing
pipework.
Note: The final separation between pipe
centres needs to be about 153 mm but absolute
accuracy is not essential as the inlet elbows are
adjustable between 146 mm and 160 mm.
Remove the plaster and brickwork to the depth
shown (fig.29). Where applicable, chase out
any additional areas of the wall for the pipework
to either the bulkhead or fixed head.
Offer the mounting bracket up to the wall and
mark the two plain fixing holes (fig.30). Drill
and plug then screw bracket to the wall.
Note: The valve can be fitted to the mounting
bracket if required or secured directly to the wall
with the screws supplied.
If installing a fixed head, the outlet adaptor
needs to be fitted into the top outlet hole in the
valve housing (fig.16). The adaptor is sealed
with an ‘O’ ring. Make sure the adaptor is fitted
with the hose end (fig.17) in the valve housing.
Fit the blanking plug into the bottom outlet hole
using an ‘O’ ring to seal it.
If fitting a bulkhead outlet, the outlet adaptor
needs to be fitted into the bottom outlet hole in
the valve housing. The adaptor is sealed with an
‘O’ ring. Make sure the adaptor is fitted with the
hose end in the valve housing (fig.17).
Fit the blanking plug into the top outlet hole
using an ‘O’ ring to seal it (fig.18).
Make sure the inlet elbows are positioned
correctly. Offer the valve up to the mounting
bracket or wall surface, and secure using the
screws provided (fig.31).
Complete the pipework to the shower marking
off the length to enter the elbows. Remove the
valve and cut the pipes to length.
Flush pipework to clear the system of all debris
and check for leaks.
IMPORTANT: The inlet elbows contain check
valves that may be damaged if debris is not
flushed through prior to fitting.

15
Combi HP thermostatic mixer shower
Where this is not possible refer to the ‘flushing
procedure’ on page 20.
Refit the valve to the mounting bracket/wall
surface and pipework (fig.32). Tighten the inlet
nuts and inlet elbow grub screws.
If fitting a fixed head, refer to the ‘Fitting the
fixed head’ section and complete the outlet
pipework to the fixed head position.
Note: The outlet pipe for the fixed head should
protrude from the surface of the wall between
50 mm and 65 mm. Before fitting the fixed head
to the wall, connect a hose to the pipework and
direct to waste.
If fitting a riser rail kit, refer to ‘Fitting the
bulkhead’ and complete outlet pipework.
Before fitting the bulkhead to the wall connect
the shower hose and direct it to waste.
Open the isolating valves to the shower and
flush through checking that the flow control
is opened fully and the temperature control
is rotated to ‘HOT’ and then to ‘COLD’ (if
necessary depress the maximum temperature
override button). Check for leaks and remedy if
necessary.
If a fixed head is installed, make good the outlet
pipe channel.
Note: If fitting a fixed head, the tiling around
the outlet pipe must be as tight as possible so
that the special lock washer will seat, otherwise
a larger diameter washer will have to be placed
behind the lock washer.
Make good the wall surface around the valve
and make sure the plastering/sealing is taken
tight to the PVC shroud (fig.33).
Should the shroud protrude beyond the wall
surface, trim flush with a sharp knife (fig.34).
Offer the flush mount plate up to the finished
tile surface and making sure the valve and plate
are aligned, mark the ‘arrowed’ fixing holes
(fig.35). Remove the flush mount plate then
drill and plug holes.
Break off the alignment tabs on the flush mount
plate (fig.36). Place a ring of silicon sealant
round the plate so that the plate seals against
the wall. Secure the plate to the wall using the
screws provided. Wipe off any excess sealant.
T00254
Fig.34
T00256
Alignment
tab
T00255
Fig.35
Fig.36

16
Combi HP thermostatic mixer shower
Fit the flush mount cover (fig.37). Locate the
lugs on the trim ring in the holes on the cover
(fig.38) and twist clockwise.
Complete the fitting of your shower accessories.
Hollow wall
The wall mounting bracket supplied with the
shower is suitable for use on a plasterboard wall
of 9.5 mm or 12.5 mm in thickness.
Decide on the shower position and whether
the hot and cold water supplies will enter the
shower from the top (falling), the bottom (ris-
ing) or the rear.
Mark an opening as shown plus the route of
inlet and outlet pipework (fig.39).
Note: The final separation between pipe
centres needs to be about 153 mm but absolute
accuracy is not essential as the inlet elbows are
adjustable between 146 mm and 160 mm.
Take out the plasterboard and offer the
mounting bracket up to the wall (fig.40). Mark
the outer fixing holes and drill. Insert the wall
bracket into wall cavity and secure using the
bolts and washers provided (fig.41).
If a fixed head is to be installed, the outlet
adaptor needs to be fitted into the top outlet
hole in the valve housing (fig.16). The adaptor
is sealed with an ‘O’ ring. Make sure the adaptor
is fitted with the hose end in the valve housing
(fig.17). Fit the blanking plug into the bottom
outlet hole using an ‘O’ ring to seal it.
If a bulkhead outlet is to be fitted, the outlet
adaptor needs to be fitted into the bottom
outlet hole in the valve housing. The adaptor is
sealed with an ‘O’ ring (fig.16). Make sure the
adaptor is fitted with the hose end in the valve
housing (fig.17). Fit the blanking plug into
the top outlet hole using an ‘O’ ring to seal it
(fig.18).
If installing a fixed head, make a hole in the wall
for the fixed head pipe.
Note: If fitting a fixed head, the hole in the wall
for the pipe must be close to 15 mm diameter as
possible. It must not exceed the diameter of the
special lock washer, otherwise a larger diameter
washer will have to be placed behind the lock
T00257
T00259
65 mm 77.5 mm
220 mm
115 mm
35 mm
Opening needs
to be at the bottom
if using a bulkhead
77.5 mm
T00258
Fig.37
Fig.38
Fig.39

17
Combi HP thermostatic mixer shower
washer.
Make sure the inlet elbows are positioned the
correct way. Offer the valve up to the mounting
bracket and secure using the screws provided
(fig.42).
Complete the pipework to the shower marking
off the length to enter the elbows. Remove the
valve and cut the pipes to length.
Flush pipework to clear the system of all
debris and check for leaks.
IMPORTANT: The inlet elbows contain check
valves that may be damaged if debris is not
flushed through prior to fitting.
Where this is not possible refer to the ‘flushing
procedure’ on page 20.
Refit the valve to the mounting bracket and
pipework. Tighten the inlet nuts and inlet elbow
grub screws.
If fitting a fixed head, refer to the ‘Fitting the
fixed head’ section and complete the outlet
pipework to the fixed head position.
Note: The outlet pipe for the fixed head should
protrude from the surface of the wall between
50 mm and 65 mm. Before fitting the fixed head
to the wall, connect a hose to the pipework and
direct to waste.
If fitting a riser rail kit refer to ‘Fitting the
bulkhead’ and complete the outlet pipework.
Before fitting the bulkhead to the wall, connect
the shower hose and direct it to waste.
Open the isolating valves to the shower and
flush through. Make sure the flow control
is opened fully and the temperature control
is rotated to ‘HOT’ and then to ‘COLD’ (if
necessary depress the maximum temperature
override button). Check for leaks and remedy if
necessary.
Make good the wall surface and make sure
the plastering/sealing is taken tight to the PVC
shroud (fig.43). Should the shroud protrude
beyond the wall surface, trim flush with a sharp
knife (fig.34).
Offer the flush mount plate up to the finished
surface. Make sure the valve and the plate are
aligned and mark the ‘arrowed’ fixing holes
(fig.35). Remove the flush mount plate then
T00260
Fig.40
T00262
T00261
Fig.41
Fig.42

18
Combi HP thermostatic mixer shower
T00253
Seal tight up
to shroud
drill and plug the holes.
Note: If fitting to plasterboard, use suitable
cavity fixings.
Break off the alignment tabs on the flush mount
plate (fig.36). Place a ring of silicon sealant
round the plate so that the plate seals against
the wall. Secure the plate to the wall using the
screws provided. Wipe off any excess sealant.
Fit the flush mount cover (fig.37). Locate the
lugs on the trim ring in the holes on the plate
and twist clockwise (fig.38).
Complete the fitting of your shower accessories
by referring to the appropriate section.
Shower cubicle or panel
To use the wall mounting bracket supplied with
a shower cubicle or a laminated panel, wooden
blocks are required to increase the depth of the
bracket. These blocks need to increase the depth
of the bracket to between 56 mm and 67 mm
from the finished surface (fig.44).
Decide on the shower position and whether
the hot and cold water supplies will enter the
shower from the top (falling), the bottom (rising)
or the rear.
Mark the wall for an opening of about 93 mm
diameter.
Cut the opening and offer the mounting bracket
up to the back of the panel (fig.45). Mark
the inner fixing holes and drill the panel and
wooden support blocks.
If installing a fixed head, fit the outlet adaptor
into the top outlet hole in the valve housing
(fig.16). The adaptor is sealed with an ‘O’
ring. Make sure the adaptor is fitted with the
hose end in the valve housing (fig.17). Fit the
blanking plug into the bottom outlet hole using
an ‘O’ ring to seal it.
If installing a bulkhead outlet, fit the outlet
adaptor into the bottom outlet hole in the valve
housing. The adaptor is sealed with an ‘O’ ring.
Make sure the adaptor is fitted with the hose
end in the valve housing (fig.17). Fit the
blanking plug into the top outlet hole using an
‘O’ ring to seal it (fig.18).
Make sure that the inlet elbows are facing the
T00264
9LHZIURP
EHKLQGSDQHO
0DUNERWK
KROHV
%UDFNHW
IL[LQJKROH
3ODWHIL[LQJ
KROH
T00263
PP
Fig.43
Fig.44
Fig.45