General information & Sink Mixer Installation Instructions

Taps that are supplied with bi-flow nozzles keep the hot and cold water separate until discharged, and are therefore suitable for installations where there is an imbalance in supply pressures. Mixers that have the rinse unit or a single flow nozzle, allow hot and cold water to mix before discharge, therefore listed check valves are supplied as standard on UK fittings, in order to meet the requirements of Water Supply Byelaws. These are ideally installed with equal pressures over 1 bar. Before beginning installation ensure the pipework has been flushed out to remove any foreign matter. On all Atriflo fittings the hot supply should be on the left when viewed from the front.

Monobloc Single Hole Mixers
Single hole mixers require a 35mm diameter hole through the surface they are to be installed on. From above, insert the flexible connections through the hole, ensuring that the base seal is in place between the mixer and mount surface. From the underside of surface, place the clamp plate and fixing nut on securing stud. Using the box spanner supplied, tighten fixing nut until mixer is held firmly in position. The flexible connecting tails terminate with a G1/2" swivel nut and captive rubber seal for fitting to standard 1/2" connectors. If the fitting has a rinse attachment or a single flow nozzle these tails will be fitted
with a check valve housing which terminate with a 15mm compression connection.

Ionian Two Hole Sink Mixers
The unions on two hole mixers require a minimum hole size of 25mm. Deck mounted pillar unions allow the centres to be adjusted from 140mm to 260mm. Wall mounted two hole mixers are fixed at 200 centres. Ensure the seal is in place between the rosette and mount surface. Both deck and wall mounted unions will suit standard 1/2" connectors or 15mm compression fitting.

Mayan Bibcock Taps
The shanks on Bibcock taps require a minimum hole size of 25mm. As the taps are separated no centre restrictions apply. Ensure the seal is in place between the rosette and mount surface. Both deck and wall mounted unions will suit standard 1/2" connectors or a 15mm compression connection.

Rinse
The rinse units require a 30mm diameter hole through the surface they are to be installed on. Assemble rinse unit socket ensuring the base seal is in place under body. Attach the tapered end to the rinse unit. Check that the Non-Return valve is fitted in the externally threaded end of the flex. If not, push the Non-return valve into the bore, ensuring that it is correctly orientated. Pass the flex through the socket, and screw the externally threaded end to the remaining hose at the base of the mixer tap.

.....For your information.....

1 BAR = 33ft HEAD OF WATER
1 BAR = 14.5 PSI

The majority of domestic dwellings in the UK have gravity feed Hot water systems, which result in most cases as low Hot water pressure. When referring to gravity feed systems the term "HEAD OF WATER" is used.

The definition of this term is as follows:- Maximum and Minimum water pressure requirements for taps are usually quoted in bar.

1 bar = 33ft Head. The term Head of water means the vertical height from the kitchen tap to the underside of the cold water storage tank, in most cases found in the loft. The conversion from Bar to head is based on the assumption that the tap is situated directly in line below the storage tank. In reality this is very rarely the case and long pipe runs across the property from storage tank to the tap can result in poor hot water performance.

It is important to check out the manufacturers minimum requirements and if in doubt consult a reputable qualified tradesman for advice