Dolphin DB3200 Manual

The showerhead and hose supplied with this product are a safety
critical part of your shower. Failure to use genuine Dolphin Solutions
parts may cause injury and invalidate your guarantee.
INSTALLATION AND MAINTENANCE GUIDE
DB3200 & DB3201
Dolphin Blue Shower Valve with Thermostatic
Temperature Control and Headworks

To check the product suitability for commercial and multiple installations, please contact
Dolphin Solutions’ specification advisory service before installation. Please see back of book for contact
information.
INSTALLERS PLEASE NOTE THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER
CONTENTS Page
DIMENSIONS AND MAIN COMPONENTS ....................................... 1
INTRODUCTION....................................................................................... 2
SITE REQUIREMENTS ............................................................................... 2
SAFETY WARNINGS ................................................................................ 2
PLUMBING REQUIREMENTS ................................................................. 3
WATER SYSTEM REQUIREMENTS ...................................................... 3
TYPICAL DOMESTIC INSTALLATIONS ............................................ 4 - 6
INSTALLATION ........................................................................................ 7 - 9
BUILT-IN FITTING ................................................................................... 8
Installation in a solid wall .......................................................................... 8
Installation in a hollow wall ..................................................................... 9
Installation in a panel wall or cubicle .................................................... 9
FITTING THE MIXER .............................................................................. 10
MAKING GOOD ...................................................................................... 11
ANTI-SCALD PROTECTION ................................................................ 11
COMMISSIONING .................................................................................... 12
ADJUSTING THE MAXIMUM TEMPERATURE STOP .................... 13
Control knob assembly ............................................................................ 13
OPERATING THE SHOWER ................................................................ 14
FLOW CHART .......................................................................................... 15
SPARE PARTS ............................................................................................. 16
MAINTENANCE ....................................................................................... 17
FAULT FINDING ...................................................................................... 18 – 19
Guarantee, service policy, etc. ............................................................. rear cover

Ref. Description
1. Cover plate
2. Mixer shower body
3. Handles X2
MAIN COMPONENTS
12
3
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
Note: water inlet and outlet fittings are
NOT supplied with this product.
Water inlets require x2 1/2” BSP fittings.
Water outlet requires x2 1/2” BSP fitting.
DIMENSIONS
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1/2" BSP Inlet/Outlet

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.
Maximum static
pressure (Bar)
10
Flow pressure,
Hot &Cold (Bar)
0.5 to 5
Hot supply
temperature (°C)
55 to 65
Cold supply
temperature ( °C)
Equal to or less than 25
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.
NOTE: Valves operating outside these conditions
cannot be guaranteed by the NSF Certification 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.
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 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).
APPROVALS
This mixer valve has the following approvals
•WRAS
•TMV2 (BS EN 1111)
Designation: HP-S (high pressure shower only)
On pressures above 0.5 bar.
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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 position as
close as is practicable to the water supply inlets
of the mixer shower.
•It is preferable to flush the pipe-work to clear the
system of debris and check for leaks before
connecting to the mixer.
•The mixer inlets contain removable filters 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 appliance-
operating manual to confirm compatibility with this
mixer shower).
Where thermal store systems and instantaneous gas
water heaters are used, if excessive draw-off takes
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.
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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)
*Fig.2 *(diagrammatic view – not to scale)
Hot water
cylinder
Fixed
head
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
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
Fixed
head
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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
Stop
tap
Expansion
vessel
Pressure
reducing valve
Combination
boiler
Fixed head
Mixer
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
Fixed head
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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)
Blender
valve
Flow
Cold mains supply
Hot
water
Stop tap
Expansion
vessel
Pressure
reducing valve Return
Service
valves
Boiler
Fixed head
Mixer
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INSTALLATION
Preparing the mixer valve
Check the contents to make sure all parts are
present.
Before starting the mixer installation, make sure all
the openings on the valve are carefully covered to
stop ingress of any debris, etc. while routing the
supply pipework.
The shower valve is suitable for built-in installation
in:
•a solid wall,
•a stud partition wall
•dry lined wall
•or fixing to a shower cubicle or panel.
Height of
sprayhead
and shower
to suit user’s
requirement.
An example of
an outlet to
Bulkhead
An example
of an outlet
to a fixed head
Siting of the shower and accessories
Refer to (fig.7) for correct siting of the shower.
The mixer valve should be positioned, as detailed,
with all controls within comfortable reach of the
user.
The accessories (showerhead, riser rail and/or fixed
showerhead) can be positioned above or to either
side of the shower, refer to (fig.7).
Supply pipe work
Complete the pipework to the shower area having
decided on the position of the shower and direction
of pipe entry (for example rising, falling or rear
entry)
The hot and cold water pipes should not
be permanently attached to the wall within one
metre of the valve, before installation is complete, to
allow for final adjustment of the valve position.
Rear entry supplies
Using a spirit level, mark the route of incoming hot
and cold water supply pipes.
NOTE: The distance between centres will be
determined by the fittings used (fig.8).
*(kits are for illustration purposes only)
245mm approx.
Channel for outlet pipes from diverter
Recess at least
60mm deep
Example Channel for
Incoming pipework (rising)
shown. The distance will
depend on the fittings used.
Recess for
valve body
at least
60mm deep
Typical building-in dimensions
*Fig.7 *(diagrammatic view – not to scale)
Fig.8
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BUILT-IN FITTING
The following are typical thicknesses and are
given as a guide only:
Tile 6 − 10mm
Adhesive 2 − 3mm
Plasterboard 9.5 − 12.5mm
Plaster finish 2 − 3mm
Maximum tile thickness to be 10mm.
When installing into a stud partition or other hollow
wall structure, the installer may wish to consider
building rear supports or other options for fitting
the mounting plate. Such options are beyond the
scope of this guide.
Use the cover plate or tiling shroud (if supplied) as
a template when cutting the opening for installing
the shower into a solid wall, stud partition or hollow
wall structure.
The building-in depth for the mounting plate is given
in (fig.9) from the plaster finish but this is
dependent upon tile and adhesive thicknesses.
The inlet elbows allow for either rising, falling or
rear entry hot and cold water supplies.
NOTE: To ease future requirements for cleaning
and maintenance of the unit, it is advisable to
route both the incoming and outgoing pipework
from the same direction. Access to the integral
strainers will also be improved with this layout.
Installation in a solid wall
•Decide on the shower position and determine
whether the hot and cold water supplies will
enter the shower from top (falling) or bottom
(rising) or rear.
•As a guide for the size of hole, it should be large
enough to accept the valve complete with the
inlet and outlet fittings and also allow access for
connection to the pipework.
•Remove the plaster and brickwork to the
required depth and chase out any additional areas
of the wall to give access to the pipework to and
from the valve plus any outlet fittings. Note that
the valve body requires a deeper recess than the
inlet and outlet fittings.
Fig.9
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•Offer the valve body up to the wall and mark the
fixing holes. Remove the valve, drill and plug the
wall. Route the pipework to valve body position.
Installation in a hollow wall
•Decide on the shower position and determine
whether the hot and cold water supplies will
enter the shower from the top (falling) or bottom
(rising) or rear (fig.10).
•When installing into a stud partition or other
hollow wall structures, the installer will need to
consider fabricating rear supports or other
options. Such options are beyond the scope of
this guide.
•Mark the route of the incoming and outgoing
pipework.
•Take out the plasterboard (use the cover plate as
a template). Offer the valve body up to the
fabrication and mark the fixing holes.
•Remove the valve and drill the holes. Route the
pipework to the valve position.
Installation in a panel wall or cubicle
When installing into a panel or cubicle structure the
installer will need to consider fabricating rear
supports or other options. Such options are beyond
the scope of this guide.
IMPORTANT: Access to the rear of the valve
must be available.
•The controls require two holes to be cut out of
the panel or cubicle. Use the face plate as a
template to mark the hole positions then
extend further to allow access for the filters.
•Route the pipework to valve position.
Fig.10
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FITTING THE MIXER
•Mark the position of eight locating screws
(g.11).
• Drill and plug the holes. (Use an appropriate
masonry drill, but if the wall is plasterboard or
a soft building block, use special wall plugs and
a suitable drill bit).
IMPORTANT: Make sure that all supply
pipework has been ushed through before tting
the mixer (g.12).
• Connect the hot water supply to the inlet
marked HOT, ‘H’ or red/orange label and
connect the cold water supply to the inlet
marked COLD, ‘C’ or blue label.
• Tighten all compression ttings
• Secure the mixer to the wall.
Fig.12
Fig.11
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LEAK TESTING
Direct the outlet of the mixer to waste. Open the
isolating valves to the shower and check for leaks.
Remedy any leaks found.
MAKING GOOD
Make good the wall and complete the tiling.
•If the tiles are accurately cut, then the
coverplate will seal around the hole in the tiles,
and the valve unit will be able to be removed
from the wall without the need to break any
tiles.
Make sure the grout lines around the valve are flush
with the tiles in order to provide a smooth sealing
surface for the coverplate.
ANTI-SCALD PROTECTION
It is important that the mixer valve is tested regularly
to prevent the risk of scalding and guarantee user
safety. This can be carried out as follows: with the
mixer blend temperature set at 38°C isolate the cold
water supply. The outlet flow rate will reduce to a
safe level.
Fitting the coverplate
Fit the coverplate over the valve body and slide tight
to the wall.
Make sure the seals in the openings stays in place as
it slides over the valve body. A smear of liquid soap
on the seal will ease this procedure (fig.13).
To prevent water ingress, seal the coverplate with a
bead of silicone sealant on the underside of the plate
(fig.14).
Fig.13
Fig.14
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COMMISSIONING
•Start the water flow by rotating the flow
control
•Make sure that both the hot and cold water
supplies are fully open and at (or near to) their
design temperature and pressures, and are within
the requirements as stated on page 2.
•Make sure the temperature control is at the
maximum temperature setting.
•Allow the shower to run at the maximum
temperature setting until the water temperature
has stabilised. Rotate the temperature control
until your desired maximum showering
temperature is reached.
The mixer has a temperature stop to prevent
accidental rotation to higher temperatures. This is
adjustable to provide a maximum temperature of
35°C – 40°C and should be checked on site to
guarantee user safety.
Temperature adjustment range
The mixed water temperature can be adjusted from
cold through to a top limit (which can
be pre-set during installation – factory set
at approximately 38°C) with full anti-scald
protection throughout the range.
Recommended outlet temperatures
The NSF TMV scheme recommends the following
set maximum mixed water outlet temperatures for
use in all premises:
44°C - for bath fill but see notes below.
41°C - for showers.
41°C - for washbasins.
38°C - for bidets.
The mixed water temperatures must never exceed
46°C at terminal fitting.
The British Burns Association recommends 37 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 43°C.
On/Off - flow knobTemperature control knob
Stop
Fig.16
Fig.15
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On/Off -
flow control
On/Off -
flow knob
control knob Temperature
control
Temperature
Notes
If there is a residual flow during the commissioning or
the annual verification (cold water supply isolation
test), then this is acceptable providing the
temperature of the water seeping from the valve is
no more than 2°C above the designated maximum
mixed water outlet temperature setting of the valve.
Temperature readings should be taken at the normal
flow rate after allowing for the system to stabilise.
The sensing part of the thermometer probe must be
fully submerged in the water that is to be tested.
Any TMV that has been adjusted or serviced must be
re-commissioned and re-tested in accordance with
the manufacturers' instructions.

HOT
COLD
ADJUSTING THE MAXIMUM
TEMPERATURE SETTING
(and fitting the knobs)
Control knob assembly
There are two knobs supplied, one is the
on/off - flow knob
and the other is the
temperature control knob.
•The knobs must be fitted in the correct order,
failure to do so will cause incorrect operation of
the shower. The temperature control knob has a
metal “stop pin” on the inside
(fig.15).
•Fit the On/Off - flow knob onto the correct
spindle (fig.16), secure to the spindle using the
screw supplied and fit the trim.
•See the correct position to fit the temperature
stop in (fig.17).
•The temperature control knob is fitted in the
same way, but Do not secure with the fitting
screw until the commissioning procedure is
complete.
•With a steady flow running, allow the
unit time to stabilise at its maximum
set temperature, if required adjust the
temperature control spindle by hand
(fig.18).
•When the showering temperature is satisfactory
turn off the shower.
•Fit the temperature control knob, making sure
the maximum temperature stop pin is as close to
the flat edge of the over ride stop as possible
(fig.18).
Fig.17
Fig.18
Maximum
temperature
stop face
Temperature
control
spindle
Pin at
maximum
temperature
stop
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OPERATING THE SHOWER
(Diverter) (fig.19)
When the ON/OFF Diverter control knob is at 12
o’clock, it is in the OFF position.
To use the left outlet turn the Diverter control to
the left. As the lever is moved towards the water
droplet symbol the flow will increase. To decrease
the flow, turn the Diverter control knob back
towards the OFF setting.
To use the right outlet turn the Diverter control to
the right. As the lever is moved towards the water
droplet symbol the flow will increase. To decrease
the flow, turn the Diverter control knob back
towards the OFF setting.
To stop the water flow reposition the Diverter
control knob to the 12 o’clock position.
To adjust the water temperature, rotate the
temperature control clockwise for a cooler shower
or anti-clockwise for a hotter shower.
CAUTION: Exposed metal and chromed
surfaces may become hot during use.
.
Fig.19
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OFF position
Temperature
control
HotterColder
ON/OFF -
Flow
control

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FLOW CHART

Ref. Description
1. Handle set .............................
2. Cover plate & seals ...............
3. Tap outlet .................................
4. Check valve assembly .............
5. Thermostatic valve ..................
SPARE PARTS
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3
2
4
5
1

WARNING!
DO NOT use ‘powerful’ abrasive or solvent
cleaning fluids when cleaning the shower as
they may damage the fittings.
Fig.A
MAINTENANCE
The following maintenance procedure must
be carried out for commercial and health care
premises, but is not necessarily required for
domestic installations.
Maintenance of the unit is required to give continued
performance after installation and that it continues to
provide scald prevention.
NOTE: A thermostatic mixing valve in need of
maintenance can be undetectable in normal use
and only becomes apparent when a disruption
occurs in the hot or cold water
supply temperatures or pressures.
The frequency of routine maintenance of the internal
of the valve will depend mainly on the water supply
condition. Experience of local conditions will dictate
the intervals for inspection and in-service testing.
Guidance has been given below which can be
adjusted for local requirements.
a) Initially check the filters for debris once every
three months and clean if necessary.
b) Perform a thermal shut off test
every three months, and check the maximum
temperature setting. See the
‘Commissioning’ section for the details of this test
and readjustment of the maximum temperature
setting if required.
c) If the maximum water temperature varies by
more than 2°C from the commissioned setting
then carry out the following checks
•Check the isolating valves are fully open.
•Check the internal surface for scaling.
If the body requires descaling then it should be
removed from the pipework to carry this work
out (all rubber parts MUST be removed before
descaling).
•Check the function of the non-return valves.
The non-return valves (NRVs) prevent cross-flow
between hot and cold supplies under unequal
pressure conditions. They are designed for long life
with no maintenance.
If these checks do not highlight the reason
for the temperature variation, then internal
components will require replacement - please see the
spare parts list.
Cleaning
It is recommended that all products are cleaned
using warm, soapy water.
Do not use abrasive or aggressive chemical cleaning
products as this may affect the product surface
finish and invalidate your guarantee.
Cleaning the filters (fig.A)
It is advised that this should be carried out by a
qualified person.
•Turn off the water supplies before starting.
•To gain access to the filters remove the filter
housings from the front of the unit.
•Remove the retaining clip and filter.
•Wash the filter thoroughly under running water,
use a suitable brush to remove all debris.
•Reassemble in reverse order.
Disinfection
Where chlorine is used for the disinfection
of water systems all relevant guidelines and
approved codes of practice must be strictly
followed. Failure to comply with the relevant
guidelines and approved codes of practice may
invalidate your guarantee.
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Filter housing
NRV
Filter

Problem/Symptom Cause Action/Cure
The following can be carried out by a competent person
FAULT FINDING
1 Water too hot. 1.1 Temperature
control incorrectly
commissioned.
1.1.1 Refer to commissioning section.
1.2 Not enough cold
water flowing
through shower.
1.2.1 Reposition the temperature control.
1.3 Increase in the
ambient cold water
temperature.
1.3.1 Reposition the temperature control.
1.4 Cold water supply
blocked.
1.4.1 Turn off shower and consult a competent
plumber or contact Customer Service.
1.5 High volume of cold
water drawn off
elsewhere.
1.5.1 Reduce the simultaneous demand from the
mains supply.
2 Water too cold. 2.1 Temperature
control incorrectly
commissioned.
2.1.1 Refer to commissioning section.
2.2 Not enough hot
water flowing
through shower.
2.2.1 Reposition the temperature control.
2.3 Decrease in the
ambient cold water
temperature.
2.3.1 Reposition the temperature control.
2.4 Insufficient hot water
supplies from the
heating system.
2.4.1 Make sure heating appliance is set to
maximum or has sufficient stored hot water.
2.4.2 Make sure heating appliance is igniting by
trying a hot water tap elsewhere.
2.5 Hot water supply
blocked or restricted.
2.5.1 Turn off shower and consult a competent
plumber or contact Customer Service.
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