8 . FITTING THE MIXER VALVE
IMPORTANT: Ensure that you have read through section 6. IMPORTANT INSTALLATION INFORMATION before
starting to fit the mixer valve.
1. The supply pipework can be plumbed from above
or below but must finish with suitable connections,
which should be at 150mm centres. A standard
Easy Fit Kit can be purchased to make installation
easier if required. Connect the 15mm pipework
using standard compression fittings (Fig 1).
2. Screw the supplied nut covers onto the dogleg
fittings until tight to the wall. If required put a bead
of silicone sealant around the inside of the cover to
prevent moisture entering the wall. The nut covers
can be adjusted depending on the length of exposed
thread from the elbow (Fig 2).
3. Offer the mixer valve to the fittings, making sure
the sealing washers are in place, screw the unions
onto the fittings. The mixer valve must be positioned
horizontally with the hot supply on the left hand side
of the outlet (Fig 3).
NOTE: Ensure you have the correct valve with the
water outlet on the bottom when the hot water inlet is
to the left.
1
2
3
9. PRESSURE BALANCING (IF SUPPLIED)
The thermostatic mixer valve is designed to work best when the feed pressures of both hot
and cold water are the same. If there is a difference in pressure it will cause the flow of water
through the valve to pulse rather than being a steady flow. This pulsing can be reduced by
putting one of the metal disks with holes into the higher pressure feed to the valve. This
restricts the flow and reduces the pulsing.
To maximise the volume of water through the valve the disk with the most holes should be
tried first. If this does not work the others should be tried until a satisfactory result
is obtained.
If the water pressures to hot and cold are the same these disks do not need to be used.
Spillover
level
