Triton Asti Lever Instruction manual
Asti Lever
Bar Mixer Shower
86004420
Installation and
operating instructions
The showerhead and hose supplied with this product are a safety
critical part of your shower. Failure to use genuine Triton parts
may cause injury and invalidate your guarantee.
2181430A - July 2016
Inclusive Bar Mixer Shower
CONTENTS Page
MAIN COMPONENTS .................................................................... 1
INTRODUCTION..........................................................................2 - 3
TYPICAL DOMESTIC INSTALLATIONS ...........................................4 - 6
INSTALLATION .............................................................................7 - 9
Preparing the mixer valve .............................................................. 7
Siting of the shower ....................................................................... 7
Supply pipework ............................................................................ 7
Variable fittings .............................................................................. 8
Making good ................................................................................. 9
Fitting the mixer ............................................................................ 9
FITTING THE MIXER CONTROLS ................................................... 10
Leak testing the mixer .................................................................. 10
COMMISSIONING ........................................................................ 11
Flow regulation ............................................................................. 11
To fit the flow regulator ................................................................ 11
TEMPERATURE ADJUSTMENT RANGE ............................................ 12
Adjusting the maximum temperature setting ................................ 12
Operating the shower ................................................................... 13
Dimensions ................................................................................... 14
Spare parts .................................................................................. 15
APPROVALS .................................................................................. 16
TMV2 REQUIREMENTS (12 MONTH VERIFICATION)
FLOW CHART ............................................................................... 16
MAINTENANCE ............................................................................ 17
Fault Finding ..............................................................................18 - 19
Guarantee, service policy, etc. ..................................................rear cover
Installers ple ase note these I nstruc tIons are to be lef t wIth the user
To check the product suitability for commercial and multiple installations, please contact Triton’s
specication advisory service before installation. Please see back of book for contact information.
E mail: technical@tritonshowers.co.uk
MAIN COMPONENTS
Fig.1
B
Inclusive Bar Mixer Shower
C
C
A
A. Thermostatic bar mixer valve
B. Dogleg connector X2
C. Cover trim X2
All dimensions listed in this fitting book regarding the product and installation are approximate.
*All kits are for illustration purposes only and are not supplied unless otherwise stated.
1
Inclusive Bar Mixer Shower
INTRODUCTION
This book contains all the necessary tting and
operating instructions for your mixer shower.
Please read them carefully and read through
the whole of this book before beginning your
installation.
The shower 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.
SITE REQUIREMENTS
The installation must be in accordance with
water supply (water ttings) regulation 1999
and/or local Bylaws.
Water pressure requirements
Running water pressure:
Low pressure* - 0.1 bar min.
1.0 bar max.
High pressure - 0.5 bar min.
5.0 bar max.
Maximum static water pressure:
Low & High pressure - 10 bar
*This mixer shower is designed for high pressure
systems found in the UK, but can be installed
with low pressure gravity water systems with
reduced ow rates.
For effective operation of the internal seals, the
maximum static pressure must not be exceeded.
Pressure reducing valve
On sites where the running pressure is above 5
bar, the use of a suitably sized pressure reducing
valve tted in the cold mains supply pipe work
can provide nominally equal pressures at the
mixer shower.
Water temperature requirements
Recommended maximum: = 65°C
Minimum hot water temperature: = 55°C
Maximum cold water temperature: = 25°C
NOTE: Valves operating outside these conditions
cannot be guaranteed by the Scheme to operate
as Type 2 valves.
A stored water temperature of 60°C is
considered sufcient to meet all normal
requirements and will minimise the effects of
scale in hard water areas.
Water temperature adjustment and
thermal safety
The mixed water temperature can be adjusted
from cold through to a top limit which must
be preset during installation with full anti-scald
protection throughout the range (35°C to 40°C)
providing the hot water temperature at the inlet
remains 10°C above the outlet temperature.
Should there be a loss of ow to either incoming
supply then- water from the shower will stop or
be reduced until both supplies are restored.
SAFETY WARNINGS
a. DO NOT choose a position where the shower
could become frozen.
b. DO NOT connect this mixer shower to any
form of tap or tting not recommended by
the manufacturer.
c. DO NOT allow the inlet pressure or ow
rates to operate outside the guidelines laid
out in ‘site requirements’.
d. DO NOT connect the mixer shower to a
gravity hot supply and a mains cold supply
(or vice versa).
Water minimum ow rate
For best performance within the specied running
pressure range a minimum ow of 8 litres per
minute should be available to both inlets.
2
Inclusive Bar Mixer Shower
PLUMBING REQUIREMENTS
DO NOT use jointing compounds on any pipe
ttings for the installation,
DO NOT solder ttings near the mixer unit
as heat can transfer along the pipework and
damage the mixer valve.
DO NOT subject the unit to a water temperature
above 80°C during installation, use, maintenance
or disinfection.
IMPORTANT:
• 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 pipe-work should be installed such
that other taps and appliances being
operated elsewhere on the premises do not
signicantly affect the ow
• When connecting pipe-work avoid using
tight 90° elbows; swept or formed bends will
give the best performance.
• The hot water pipe entry MUST be made to
the left-hand side inlet, marked HOT, ‘H’ or
with a red/orange label.
• Suitable isolating valves (complying with
Water Regulations and Bylaws) MUST be
tted 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.
• It is preferable to ush the pipe-work to clear
the system of debris and check for leaks
before connecting to the mixer.
• The mixer inlets contain removable lters
that may become blocked if debris is not
ushed through before tting.
(Commercial applications)
• It is recommended that for all commercial
applications, easily accessible, in-line lters
are used to aid maintenance.
Hard water areas
a. 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 tted. For advice on the scale
inhibitor, please contact Customer Service.
b. For best performance the showerhead MUST be
regularly cleaned to remove scale and debris.
WATER SYSTEM REQUIREMENTS
This mixer shower is suitable for:
• Gravity water systems
• Pumped gravity systems.
• Fully modulating type combination boilers
• Multi-point hot water heaters.
• Thermal storage,
• Unvented systems
When installing this mixer with a Combination or
multi-point boiler, it may be necessary to install
ow regulation.
Check that the appliance is capable of delivering
hot water at a minimum switch-on ow rate
of 3 litres per minute. At ow rates between 3
and 8 litres per minute, the appliance MUST be
capable of raising the water temperature to 52°C
(minimum).
Water temperature at the inlet of the mixer valve
MUST remain relatively constant when ow rate
adjustments are made (refer to the applianceoperating manual to conrm compatibility with
this mixer shower).
Where thermal store systems and instantaneous
gas water heaters are used, if excessive drawoff take place the appliance may not be able to
maintain an adequate output temperature.
This could result in the shower temperature
becoming noticeably cooler.
Flow regulators can be tted with high-pressure
water systems to reduce ow rate and assist
economy.
The hot supply temperature MUST remain a
minimum of 10°C hotter than the required blend
temperature for optimum performance.
3
Inclusive Bar Mixer Shower
*Fig.2
*Fig.3
*(diagrammatic view – not to scale)
Stop valve
cistern
Cold supply
Minimum head
Hot supply
Service
valves
Alternative supply
(must be below
vent pipe tee)
Cold water
Gate
valve
Cold
water
mains
supply
Hot water
cylinder
Drain
valve
Other
draw-offs
Draw-off must point down
to avoid airlock issues
*(diagrammatic view – not to scale)
Mixer
Service
valves
TYPICAL DOMESTIC INSTALLATIONS
Domestic gravity fed systems (g.2)
The shower control MUST be fed from a cold
water cistern and hot water cylinder providing
nominally equal pressures. There MUST be
a minimum of one metre head of water. The
minimum head distance is measured from the
base of the cold water cistern to top of the
showerhead.
If valves are gravity fed then supply pressure
should be veried to ensure conditions of use are
appropriate for the valve.
Pumped gravity fed systems (g.3)
The shower control MUST be fed from a cold
water cistern and hot water cylinder providing
nominally equal pressures.
The mixer unit may be used with a gravity fed
system with a pump to boost pressures as shown;
please refer to the pump installation guide to
establish the minimum head requirements for
automatic operation of the pump
Stop valve
Cold
water
mains
supply
Drain
valve
Cold water
cistern
Alternative supply
(must be below
vent pipe tee)
Gate
valve
Hot water
cylinder
Other
draw-offs
Draw-off must point
down to avoid airlock
issues
Cold supply
Minimum head
Hot
supply
Service
valve
Mixer
Pump
Isolating switch or
pull cord switch
(both fused at 3A)
Ring main
Service
valve
4
Inclusive Bar Mixer Shower
Instantaneous gas-heated systems,
e.g. combination boilers
The shower control MUST be installed with a
multi-point gas water heater or combination
boiler of a fully modulating design (i.e.
to maintain relatively stable hot water
temperatures).
A drop tight pressure reducing valve MUST
be tted if the supply pressures exceed 5 bar
running.
An expansion vessel MAY be tted, and regularly
maintained, to prevent the shower mixer
being 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.
(g.4)
Unvented mains pressure systems (g.5)
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
t 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 may be
required if a second pressure-reducing valve is
installed. This does not apply to packages with a
cold take off after the pressure-reducing valve to
the cylinder.
*Fig.4
Cold
mains
supply
*Fig.5
*(diagrammatic view – not to scale)
Mixer
Service
valves
Stop
tap
Expansion
Hot water
vessel
Pressure
reducing valve
Combination
boiler
*(diagrammatic view – not to scale)
Service
valves
Mixer
Safety devices
not shown
CH flow
CH return
Unvented
hot water
storage unit
Pressure
reducing valves
Stop tap
Balanced cold mains supply
Cold mains supply
Expansion
vessel
5
Inclusive Bar Mixer Shower
Blender
valve
Flow
Cold mains supply
Hot
water
Stop tap
Expansion
vessel
Pressure
reducing valve
Return
Service
valves
Boiler
Mixer
*Fig.6
*(diagrammatic view – not to scale)
Mains pressurised thermal store systems (g.6)
Packages of this type, tted with a tempering
valve (blender valve) can be used. A drop tight
pressure reducing valve MUST be tted if the
supply pressures exceed 5 bar running.
An expansion vessel MUST be tted, and
regularly maintained, to ensure, 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).
6
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