Atag iSteel 120, Installation Manual

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INTRODUCTION
The corrosion resistant iSteel Unvented cylinder is made from Duplex Stainless Steel. It is highly insulated with
environmentally friendly foam enclosed in a rust resistant white steel case.
It is available in Direct, and Indirect versions in a family of 7 sizes from 90 - 300 litres. Twin Coil Indirect units are available
in 5 sizes from 150 - 300 litres. There is also a range of slim-style units from 60 - 210 litres again in Direct and Indirect
versions, please contact ATAG Heating Technology about slim-style units.
To help ensure compliance with the relevant Water and Building Regulations all iSteel units are supplied complete with
the necessary safety and control devices needed to connect to the cold water mains. In order to ensure high flow-rate
performance with minimum pressure drop even in lower pressure areas, pre-set high quality controls have been selected.
iSteel is approved to demonstrate compliance with Water Regulations and Building Regulations G3 & Part L.
STORAGE PRIOR TO INSTALLATION
iSteel should be stored upright in a dry area and kept in its original packaging until immediately prior to installation.
INSTALLATION PREREQUISITES
This Cylinder should only be installed by a competent installer holding their G3 unvented qualification. The installation of
this product is also notifiable under the national Building Regulations.
ONCE COMPLETED THIS INSTRUCTION MANUAL IN ITS ENTIRETY SHOULD BE LEFT WITH THE HOME OWNER.
WHAT IS BENCHMARK?
Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are
provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with
the manufacturer’s instructions by competent persons and that it meets the requirements of the appropriate Building
Regulations. The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be
provided to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work in accordance with the Benchmark
Code of Practice which is available from the Heating and Hotwater Industry Council who manage and promote the
scheme. Visit
www.centralheating.co.uk
COLD INLET SET – WHAT ARE THE CONNECTIONS?
EQUIPMENT SUPPLIED WITH THE CYLINDER
Cold Water Inlet Set LOOSE
15 x 22mm Tundish LOOSE
Temperature & Pressure Relief Valve FITTED
Expansion Vessel
LOOSE
Expansion Vessel Bracket
LOOSE
Compression Nut Connection For Expansion Vessel LOOSE
Immersion Heater(s) - dependant on size and configuration LOOSE
Instruction Manual LOOSE
Benchmark Log Book – at the rear of this manual LOOSE
WATER SUPPLY