1
INTRODUCTION
This book contains all the necessary fitting and operating instructions for your MX thermostatic
mixer shower.
Please read these instructions carefully. Read through the whole of this book before beginning
your installation.
The shower installation MUST be carried out by a suitably competent person after reading these
instructions.
Care taken during the installation will provide a long and trouble free life from your shower. For
the best performance within the specified running pressure range, a minimum flow of 5 liters per
minute should be available on both inlets.
This mixer valve is designed to operate on most water systems found up to a maximum of 5
bar running pressure. The valve must not be subjected to water temperatures above 80°C. This
mixer 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 liters per minute. At flow
rates between 3 and 8 liters per minute, the appliance must be capable of raising the water
temperature to a minimum of 52°C.
The water temperature at the inlet to the mixer valve must remain relatively constant when flow
rate adjustments are made (refer to the water heater operating manual to confirm compatibility
with this mixer shower).
Inlet connections are female ¾ BSP threads which can be connected to 15mm or 22mm
compression fittings (not included).
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.
DO NOT connect this mixer valve to any form of tap or fitting not recommended by the
manufacturer.
The handset must be regularly cleaned to remove scale and debris.
Conveniently situated service valves in each inlet supply must be fitted as an
independent method of isolating the shower should maintenance or servicing be
necessary, these valves should not restrict the flow.
DO NOT operate the shower outside the recommended temperatures and pressures
stated in this guide. Always test the water temperature with your hand before entering
the shower.
NB: As a competent person installing this shower you should ensure that all users are
very conversant in it’s operation.
MX Atmos Select 6752B 09_14_GF.indd 2
24/10/2014 14:56
