6
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
Cylinder safety information
Following an inspection, it was ascertained that this
product complies with the building regulations for closed
hot water cylinder systems and must not be changed or
rebuilt in any way.
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When replacing parts, only original replacement parts
from Vaillant Ltd. may be used.
The installation must be approved in accordance with
the building regulations.
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Installation plans must be disclosed to the relevant
authorities.
Important:
As stipulated in the manual "Handling Operations Regu-
lations 1992", the weight of the unit exceeds that which
should be lifted by one person alone.
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 corro-
sion of 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.
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Make sure that both the hot water and cold mains inlets
are connected to the earth line by means of
an earth cable directly on the cylinder.
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You must also make sure that the electric immersion
heater is connected to the earth line via the earthing ter-
minal.
Risk of scalding and damage from escaping hot or cold
water.
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If you use plastic pipes for the hot or cold water connec-
tion of the unit, you must only use pipes which are tem-
perature-resistant up to 95 °C under a pressure of 1.0
MPa (10 bar).
Improper use and/or the use of unsuitable tools may
result in damage (e.g. water leaks).
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Always use a suitable open-end wrench (spanner) to tigh-
ten or undo threaded connections. Do not use pipe wren-
ches, extensions, etc.
If the water does not satisfy the standards for water
quality in the UK with a maximum chloride content of
250 mg/l, this may result in corrosion damage to the
cylinder.
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Only use the cylinder to heat potable water.
Avoiding burns and scalds
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Install and replace collectors or collector parts on very
cloudy days. Only carry out installation work
in the early morning or in the evening on sunny days or
cover the collector.
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Fill and flush the solar heating system when the collec-
tors are cold. Cover the collectors while doing so.
If the solar heating system is in stagnation, hot steam
can escape from the expansion relief valve of the solar
pump unit, causing injury to persons. Escaping solar
fluid is visible in the collection canister.
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Connect the expansion relief valve to a collecting
container via a metal pipe.
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Position an air vent or an air separator system in such a
way that persons are not endangered by escaping steam.
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Install a hot water thermostat mixer in the system
to protect against scalding.
Preventing frost damage
You should not turn the gas-fired wall-hung boiler off
completely so that you can still use all of the safety
functions for your heating system. 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 auroSTOR.
Avoiding damage caused by leaks
If there are leaks in the pipework, close off the cold
water stop valve on the safety assembly and notify a
competent person so that they can rectify the leaks.
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
a competent person!
2.4
Overview of EU standards
2.4.1
General information on solar heating system
EN ISO 9488
Solar heating system and components, terminology
(ISO/DIS 9488; 1995)
EN 12975-1
Solar heating systems and components; Collectors,
Part 1: General requirements
EN 12975-2
Solar heating systems and components; Collectors;
Part 2: Testing methods
EN 1991-2-3
Eurocode 1 – Basis of design and actions on structures,
Part 2–3: Actions on structures - Snow loads
EN 12976-1
Solar heating systems and components;
Factory made systems - Part 1: General requirements
EN 12976-2
Solar heating systems and components;
Factory made systems - Part 2: Testing methods
2 Safety instructions and regulations
