1
INTRODUCTION
This book contains all the necessary fitting and operating instructions for your MX
thermostatic concentric 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 higher pressure 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 to 15mm compression fittings.
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 or connect this mixer valve
to any form of tap or fitting not recommended by the manufacturer.
The showerhead 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.
As a competent person installing this shower you should ensure that all users are very
conversant in its operation. Always test the water temperature with you hand before entering
the shower.
