Thermostatic 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.
IMPORTANT:
•ThelayoutandsizingofpipeworkMUST
be such that nominally equal inlet supply
pressures are achieved and the effects of
other draw-offs are minimised.
•Thepipe-workshouldbeinstalledsuch
that other taps and appliances being
operated elsewhere on the premises do not
significantly affect the flow.
•Whenconnectingpipe-workavoidusing
tight 90° elbows; swept or formed bends will
give the best performance.
•Thehotwaterpipeentrymustbemadeto
the left-hand side inlet, marked HOT, ‘H’ or
with a red/orange label.
•Suitableisolatingvalves(complyingwith
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.
•Itispreferabletoushthepipe-worktoclear
the system of debris and check for leaks
before connecting to the mixer.
•Themixerinletscontainremovablelters
that may become blocked if debris is not
flushed through before fitting.
(Commercial applications)
•Itisrecommendedforallcommercial
applications that, 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: -
•Gravitywatersystems.
•Pumpedgravitysystems.
•Fullymodulatingtypecombinationboilers.
•Multi-pointhotwaterheaters.
•Thermalstorage.
•Unventedsystems.
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 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.