Triton VALDI Installation And Operating Instructions Manual

Installers please note these InstructIons are to be left wIth the user

2181010E - April 2011

Installation and

operating instructions

VALDI

Thermostatic vertical mixer shower

86003870

Vertical bar mixer shower

To check the product suitability for commercial and multiple installations, please contact Triton’s
specification advisory service before installation.

Telephone:

Facsimile:

E mail:

0844 980 0730

0844 980 0744

[e-mail]

CONTENTS Page

MAIN COMPONENTS .................................................................... 1

INTRODUCTION.......................................................................... 2 -3

TYPICAL DOMESTIC INSTALLATIONS ...........................................4 - 6

PREPARING THE MIXER VALVE........................................................ 7

SITING OF THE SHOWER ............................................................... 7

SUPPLY PIPEWORK ......................................................................... 8

FITTING THE MIXER ....................................................................9 - 10

FINAL LEAK TESTING .................................................................... 11

COMMISSIONING ........................................................................ 11

TEMPERATURE ADJUSTMENT RANGE ............................................ 12

Adjusting the maximum temperature setting ................................ 12

Recommended outlet temperatures - TMV2 ................................ 13

OPERATING THE SHOWER ............................................................ 13

APPROVALS .................................................................................. 14

TMV2 REQUIREMENTS (12 MONTHLY VERIFICATION) ............... 14

FLOW CHART ............................................................................... 14

DIMENSIONS ............................................................................... 15

SPARE PARTS .............................................................................16 - 17

MAINTENANCE ............................................................................ 18

FAULT FINDING .........................................................................19 - 20

Guarantee, service policy, etc. ..................................................rear cover

Vertical bar mixer shower

1

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.

Fig.1

A. Vertical thermostatic mixer valve

B. Cover trim

C. Mixer mounting bracket

Fig.1

MAIN COMPONENTS

A

CB

Vertical bar mixer shower

2

Replacement parts can be ordered from Triton Customer
Service. See ‘spare parts’ for details and part numbers.

INTRODUCTION

This book contains all the necessary fitting 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 fittings) regulation 1999
and/or local Bylaws.

Water pressure requirements

Running water pressure:

Low presure* - 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 flow 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 fitted in the cold mains supply pipe work
can provide nominally equal pressures at the
mixer shower.

Water minimum flow rate

For best performance within the specified running
pressure range a minimum flow of 8 litres per
minute should be available to both inlets.

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 sufficient 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 flow 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 fitting not recommended by
the manufacturer.

c. DO NOT allow the inlet pressure or flow

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).

Vertical bar mixer shower

3

PLUMBING REQUIREMENTS

DO NOT use jointing compounds on any pipe

fittings for the installation,

DO NOT solder fittings 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
significantly affect the flow

• 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
fitted 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
flushed through before fitting.

(Commercial applications)

• Itisrecommendedthatforallcommercial

applications, easily accessible, in-line filters
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 fitted. 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
flow regulation.

Check that the appliance is capable of delivering
hot water at a minimum switch-on flow rate
of 3 litres per minute. At flow 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 flow rate
adjustments are made (refer to the appliance­operating manual to confirm 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 fitted with high-pressure
water systems to reduce flow rate and assist
economy.

The hot supply temperature MUST remain a
minimum of 10°C hotter than the required blend
temperature for optimum performance.

Vertical bar mixer shower

4

TYPICAL DOMESTIC INSTALLATIONS

Domestic gravity fed systems (fig.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 verified to ensure conditions of use are
appropriate for the valve.

Pumped gravity fed systems (fig.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

*Fig.3

*(diagrammatic view – not to scale)

Hot water

cylinder

Mixer

Cold supply

Hot

supply

Alternative supply

(must be below

vent pipe tee)

Cold
water
mains

supply

Drain
valve

Gate

valve

Stop valve

Cold water

cistern

Minimum head

Other

draw-offs

Draw-off must point

down to avoid airlock

issues

Ring main

Isolating switch

or pull cord
switch (both
fused at 3A)

Service

valve

Service

valve

Pump

Kit

Hot water

cylinder

Cold supply

Hot supply

Alternative supply

(must be below

vent pipe tee)

Cold

water

mains

supply

Drain
valve

Gate

valve

Stop valve

Cold water

cistern

Minimum head

Other

draw-offs

Draw-off must point down

to avoid airlock issues

Service

valves

Mixer

Kit

*Fig.2

*(diagrammatic view – not to scale)

Vertical bar mixer shower

5

Instantaneous gas-heated systems,
e.g. combination boilers (fig.4)

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 fitted if the supply pressures exceed 5 bar
running.

An expansion vessel MAY be fitted, 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.

Unvented mains pressure systems (fig.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
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 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

*(diagrammatic view – not to scale)

*Fig.5

*(diagrammatic view – not to scale)

CH flow

Cold

mains

supply

Hot water

CH return

Service

valves

Mixer

Stop

tap

Expansion

vessel

Pressure

reducing valve

Combination

boiler

Kit

Service

valves

Balanced cold mains supply

Cold mains supply

Mixer

Expansion

vessel

Pressure

reducing

valves

Stop tap

Unvented
hot water

storage unit

Safety devices

not shown

Kit

Vertical bar mixer shower

6

Mains pressurised thermal store systems (fig.6)

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 running.

An expansion vessel MUST be fitted 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).

*Fig.6

*(diagrammatic view – not to scale)

Flow

Return

Boiler

Blender

valve

Cold mains supply

Hot

water

Stop tap

Expansion

vessel

Pressure

reducing valve

Service

valves

Mixer

Kit