Glow-worm Clearly Solar Cylinders - Manual (Page 6)

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INTRODUCTION
2.2 general safety information
Installation and adjustment as well as service, maintenance
and repair must be carried out by a competent person approved
at the time by the Health and Safety Executive and be in
accordance with the relevant requirements of the Local Authority,
Building Regulations, Building Regulations (Scotland), Building
Regulations (Northern Ireland), and the bye-laws of the local
Water Undertaking.
2.3 Cylinder safety information
This product has been assessed and found to comply with the
requirements of the Building Regulations for unvented hot water
storage systems and must not be altered or modified in any way.
In the event of parts replacement, use only genuine spare parts
supplied by Glow-worm.
The installation is subject to Building Regulation approval.
Notify the Local Authority of intention to install.
As stipulated in the manual "Handling Operations
Regulations 1992", the weight of the unit exceeds that
which should be lifted by one person.
Without potential equalisation, life-threatening voltage from
the electric immersion heater can reach the piping and water
taps.Earth the electric immersion heater. If the solar cylinder is
connected with pipes made of non-metallic materials and is not
earthed, corrosion damage can occur.
Earth the solar cylinder for potential equalisation and to protect
against overvoltage.
If using non-metallic pipes on the water route, make sure that
they are designed by the manufacturer for continuous operation
at 70°C and operation by the hour at temperatures of up to 95°C
Always use a suitable open-end spanner to tighten or undo
threaded connections. Do not use pipe wrenches, extensions,
etc. If the water does not meet the requirements of the UK water
quality standards with a maximum chloride level of 250 mg/l,
corrosion damage may occur to the cylinder.
Only use the cylinder to heat potable water.
2.3.1 electric potential equalisation
If you use an electric immersion heater in the cylinder, the
external voltage may build up electrical potential in the water
which can result in the electrochemical corrosion of the electric
immersion heater. Make sure that both the hot water and cold
water pipes are connected to the earth line by means of earth
cable directly on the cylinder. You must also make sure that the
electric immersion heater is connected to the earth line via the
earthing terminal.
2.3.2 Preventing frost damage
You should not turn the gas-fired boiler off completely so that
you can still use all of the safety functions for your heating
installation. If you want to take the unit out of operation for a
relatively long period of time in an unheated room at risk from
frost, you must completely drain the Flurocyl
2
.
2.3.3 avoiding damage caused by leaks
If there are leaks in the pipe network, close off the cold water stop
valve on the safety assembly and notify an engineer qualified to
work on unvented systems to rectify the leaks.
2.3.4 avoiding burns and scalds
For scald protection, install a hot water thermostat mixer in the
system.
If the system is in stagnation then hot steam can discharge from
the expansion relief valve of the solar pump unit. This may be
visible in the receptor canister. Should this occur contact your
installer for advice.
The temperature of the stored water could reach high
temperatures after solar charging and your Glow-worm solar
installer will have fitted a tempering valve so as to prevent this
reaching the hot water taps. Should excessively hot water reach
your hot taps contact your installer immediately.
2.3.5 Preventing damage due to unauthorised
changes to the unit
Changes to the supply lines, relief valve termination, and
expansion relief valve may only be carried out by an engineer
qualified to work on unvented systems.
Never shut off the expansion relief valve or relief valve
termination.
Never bypass any of the security devices.
2.4 Cylinder identification plate
The identification plate is attached to the middle of the cylinder
at the factory.
2.5 Regulation and statutory requirements
2.5.1 Cylinder and cylinder assembly
Pressure equipment directive 97/23/eC
Directive of the European Parliament and Council from 29th May,
1997 for the approximation of the laws on pressure equipment of
the Member States
eN 12977-3
Thermal solar systems and components; Custom built systems,
Part 3: Performance characterisation of domestic hot water
cylinders
eN 12897:2006
Water supply - specification for indirectly heated unvented
(closed) domestic hot water cylinders