Dual exposed shower with fixed and adjustable shower heads installation instuctions page 4
Important information
Introduction
The Dual product is an exposed shower complete with fixed and adjustable height shower heads. Dual thermostatic valves provide
close temperature stability and fail safe protection on appropriate high pressure systems.
The Dual product is suitable for use on high pressure, combination boiler and boosted gravity systems.
The Dual product is supplied with a 5 year guarantee.
Safety information
This product must be installed by a competent person in accordance with all relevant current Water Supply Regulations.
THE SHOWER MUST NOT BE USED WITH A HOT WATER SUPPLY TEMPERATURE OVER 65 C.
The Dual product is designed for domestic use only.
Product specification
Dual products are suitable for balanced high pressure, combination boiler systems and boosted gravity systems. Pressure range
1.0* – 10 bar max (static).
* The combination boiler MUST have a minimum rating of 24kW (80,000 Btu) and be of the type fitted with a fully modulating
gas valve.
If in any doubt, please contact the appliance manufacturer before installation commences.
Connections
The Dual product is designed for conventional supplies with HOT on the Left and COLD on the Right as viewed from the front.
Supply lines must be flushed clear of any debris before installation of the unit. Any debris accumulation in the shower valve and
head may result in damage and poor performance.
Flushing
Some modern fluxes can be extremely corrosive and, if left in contact, will attack the working parts of this unit. All soldering must
be completed and the pipe work thoroughly flushed out in accordance with current Water Supply Regulations prior to connection
of the product.
Filters
To ensure optimum ongoing performance, Dual products are protected by inlet filter assemblies in the internal waterways. Debris
accumulation may result in progressively reduced flow through the showerhead and noisy operation.
Isolating valves
Suitable full way isolation valves must be fitted to both supplies in accordance with current Water Supply Regulations and our
terms of warranty.
Due to their restrictive characteristics, stopcocks and ball type valves that reduce the pipe bore size must not be used on gravity
pumped installations.
Pressures
The Dual cartridge is designed to operate from the mains at a maximum of 10 bar. If the mains pressure exceeds 5 bar a ‘drop
tight’ PRV must be fitted on the supply pipe after the main stopcock.
A setting of 3 bar is recommended. It should be noted that
daytime pressures approaching 8 bar can rise above the stated maximum overnight.
A suitable PRV is available from Aqualisa.
If the dynamic (running) pressure is greater than 2 bar a bottom outlet flow regulator will be required. Please contact Aqualisa
customer service on 01959 560010.
! The Dual product is not suitable for mixed supply systems, e.g. gravity hot and mains cold.
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