Armitage Shanks Markwik 21 - Description; Fittings Covered

2
The ttings covered by this installation and maintenance instruction
should be installed in accordance with the water regulations
published in 1999*, therefore Armitage Shanks would strongly
recommend that these ttings are installed by a professional installer
*A guide to the Water Supply (Water Fittings) Regulations 1999 and the Water Byelaws 2000, Scotland is published by WRAS (Water
Regulations Advisory Scheme) Fern Close, Pen-y-Fan Industrial Estate, Oakdale, Newport, NP11 3EH. ISBN 0-9539708-0-9
2 DESCRIPTION
This manual covers the Markwik range of proximity operated, panel mounted, thermostatically
controlled mixers. These are designed to provide water at a preset temperature for hand washing.
The proximity controls allow operation of the ow without the user having to touch the mixer.
These products are tted with an Armitage Bioguard outlet which reduces the opportunity for bio lm
attachment and is lined with anti-microbial copper.
A hygiene ush (automatic) is an important optional feature of these products which can be enabled by
the installer or maintenance staff using the optional remote programming unit. The hygiene ush is used
to combat periods of low usage of the product. The program monitors and permits the tting to be run
automatically if it hasn’t been used for a set time period. This feature ensures regular movement of water
preventing stagnation, thus combating bio lm growth and bacteria colonisation.
See section 12.5 for more details.
Two models are covered.
The Proximity Mixer, where ow occurs only while the user’s hands are in the detection zone.
The Timed Flow Mixer, where ow starts when the user’s hand enters the detection zone and shuts off
after a preset time. The preset time can be adjusted. Traditionally the sensor is mounted to the right
of the tting, but it can be mounted to the left if necessary.
They are both intended to be installed on duct panel walls.
The panel thickness should be in the range 13 - 27 mm. Two holes, of diameter 30mm nominal and
one at 35mm nominal, will need to be cut in the panel at centres dened in Figures 1 & 2
The hot side of the mixer is insulated to ensure the body surface is maintained at a safe temperature
when the tting is in operation. These mixing valves are supplied complete with integral isolating valves,
strainers, check valves and ow regulators and are provided with a facility for thermal disinfecting of the
cold inlet side and mixed water outlet
In response to the new requirements of HTM 04-01 Addendum, the design of
Markwik mixers has been enhanced to permit easy demounting of the
mixer from the inlets..
Avoid using heat for soldering near the mixer inlets
to prevent damage to internal components.
FITTINGS COVERED
Description
A6061AA Markwik Proximity Thermostatic Panel Mounted Mixer
with Armitage Bioguard outlet
A6062AA Markwik Timed Flow, Proximity Operated Thermostatic Panel
Mounted Mixer with Armitage Bioguard outlet