vaillant Aurostor VIH S GB 210/2 S User guide

Instructions for commissioning, maintenance
and troubleshooting
For the competent person
Instructions for commissioning, maintenance and troubleshooting
Solar heating system with auroSTOR
Solar hot water system
GB, IE
Table of contents
1 Notes on the documentation ................................3
1.1 Other applicable documents ...................................3
1.2 Storing documents .....................................................3
1.3 Symbols used ...............................................................3
1.4 Applicability of the instructions .............................. 3
1.5 Cylinder identification plate .....................................4
1.6 CE label .........................................................................4
1.7 Benchmark ...................................................................4
2 Safety instructions and regulations ..................4
2.1 Safety and warning information .............................4
2.1.1 Classification of action-related warnings .............4
2.1.2 Structure of warnings ................................................4
2.2 Intended use ................................................................5
2.3 General safety instructions ......................................5
2.4 Overview of EU standards ........................................6
2.4.1 General information on solar heating system .....6
2.4.2 Cylinder and cylinder assembly .............................. 7
2.5 Regulations for Great Britain ...................................7
2.5.1 Technical Guidance .....................................................7
2.5.2 Related documents.....................................................7
2.5.3 Regulations for the prevention of accidents .......8
3 System description ..................................................8
3.1 Design and function of solar heating system ......8
3.2 Electrical wiring......................................................... 10
3.3 Hot water temperature regulation ....................... 10
3.4 Heating control .......................................................... 10
4 Description of the components ............................11
4.1 auroSTOR solar cylinder ...........................................11
4.1.1 Safety devices .............................................................12
4.1.2 Cylinder operating elements ...................................12
4.2 Solar fluid ....................................................................14
4.2.1 Properties of solar fluid ...........................................14
4.2.2 Solar circuit frost and corrosion protection
system ..........................................................................14
4.2.3 Cylinder frost protection ..........................................14
4.2.4 Safety data sheet for Vaillant solar fluid .............15
4.3 System configuration ................................................17
4.3.1 Vaillant controllers and their basic functions .....17
4.3.2 Control functions .......................................................18
4.3.3 Technical data of the auroSTOR solar cylinder 20
4.3.4 Dimensions .................................................................22
5 Assembly ...................................................................23
5.1 Scope of delivery ......................................................23
5.2 Transporting the cylinder .......................................23
5.3 Requirements for installation site ........................23
6 Installation ................................................................24
6.1 Installation sequence ...............................................24
6.2 Installation of solar circuit piping .........................24
6.2.1 Piping material in the solar circuit .......................24
6.2.2 Layout of piping in the solar circuit .....................24
6.2.3 Realisation of solar circuit piping .........................25
6.2.4 Venting the solar circuit..........................................27
6.3 Pipes for the primary heating circuit ..................29
6.4 Installing hot water pipes .......................................29
6.5 Hot water thermostat mixer ..................................29
6.5.1 Installing the hot water thermostat mixer
(without secondary circulation line) ................... 30
6.5.2 Installing the hot water thermostat mixer
(with secondary circulation line) .......................... 30
6.5.3 Setting the hot water thermostat mixer ............ 30
6.6 Installation of cold mains inlet ...............................31
6.6.1 Pressure in cold mains inlet ....................................31
6.6.2 Mounting the safety assembly ...............................31
6.6.3 Mounting the expansion vessel .............................32
6.6.4 Mounting the drain valve ........................................32
6.6.5 Laying the pipes to the tundish ............................32
6.7 Installation of discharge pipe ................................32
6.7.1 Design of discharge pipe .........................................32
6.7.2 High drain ...................................................................34
6.8 Electrical installation ...............................................34
6.8.1 Options for combining control components ......34
6.8.2 Electrical connection of control components ....36
6.8.3 Connecting up the electric immersion heater ... 37
6.8.4 Connection of the solar pump ...............................38
6.8.5 Connecting up the solar yield temperature
sensor ..........................................................................38
6.8.6 Installing the control components in accordance
with the connection wiring diagrams .......................40
7 Commissioning .........................................................52
7.1 Checking leak-tightness ..........................................52
7.2 Flushing the solar circuit with solar fluid ...........53
7.3 Filling the solar circuit with solar fluid ................53
7.4 Setting the flow rate in the solar circuit ............ 54
7.5 Flushing the primary heating circuit ...................55
7.6 Water treatment ........................................................55
7.7
7.8 Filling the central heating system ........................57
7
7.10 Setting the hot water thermostat mixer ............ 58
7.11 Filling in the commissioning report ....................58
7.12 Handover to the operator ...................................... 58
Filling the cylinder ................................................... 56
.9 Commissioning the gas-fired wall-hung boiler 58
2 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
8 Inspection and maintenance ...............................59
8.1 Checking the temperature/pressure
relief valve and expansion relief valve .................61
8.2 Checking the charge pressure
of the expansion vessel ............................................61
8.3 Draining the cylinder ................................................61
9 Fault finding ..............................................................62
10 Taking the cylinder out of service ................... 65
10.1 Temporarily taking the cylinder out of service 65
10.2 Permanently taking the cylinder
out of service ............................................................ 65
11 Recycling and disposal ......................................... 65
11.1 Cylinder disposal ...................................................... 65
11.2 Disposal of packaging ............................................. 65
12 Customer service and manufacturer's
guarantee .................................................................. 66
12.1 Vaillant service ......................................................... 66
12.2 Vaillant guarantee ................................................... 66
Notes on the documentation 1
1 Notes on the documentation
The following instructions are intended to guide you through the entire documentation. Other documents apply in addition to these installation instructions.
We do not accept liability for any claims or damages resulting from failure to observe these instructions.
1.1 Other applicable documents
> When installing and maintaining the solar heating system,
you must observe all of the installation and maintenance instructions for system components as well as those for other accessories which are used in the system.
These installation and maintenance instructions are pro­vided with the relevant system components and accesso­ries.
1.2 Storing documents
> Pass these installation instructions and all other appli-
cable documents and, if necessary, any required tools to the system operator.
The system operator will store these so that they are available when required.
1.3 Symbols used
The symbols used in the text are explained below.
Symbol that denotes useful tips and information
i
> Symbol for a required action
1.4 Applicability of the instructions
These instructions apply for the following only:
Unit type Cylinder volume Article number
VIH S GB 210/2 S 210 litres 0020115422
VIH S GB 260/2 S 260 litres 0020115425
VIH S GB 310/2 S 310 litres 0020115428
Table 1.1 Applicability of the instructions
> The article number of the unit is displayed
on the identification plate.
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 3
1 Notes on the documentation 2 Safety instructions and regulations
1.5 Cylinder identification plate
The identification plate is attached to the cylinder at the factory.
1.6 CE label
CE labelling shows that, based on the type overview, the units comply with the basic requirements of the applica­ble directives. The CE declarations of conformity can be viewed at the manufacturer's premises and can be supplied if neces­sary.
1.7 Benchmark
Vaillant Ltd. supports the Benchmark Initia-
tive. You will find the Benchmark Logbook on
i
the last page of this instruction manual. It is very important that this document be filled out properly when installing, commissioning and handing-over to the operator of the installation. Installers should point out also the service record section for completion fol­lowing service calls to this appliance. 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 approved at the time by the Health and Safety Executive 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 Hot water Industry Council who manage and promote the Scheme.
Visit "www.central heating.co.uk" for more
information
.
2 Safety instructions and regulations
2.1 Safety and warning information
When conducting installation and maintenance work, observe the general safety instructions and the warning notes which appear before each of the actions.
2.1.1 Classification of action-related warnings
The action-related warnings are classified in accordance with the severity of the possible danger using the follow­ing warning signs and signal words:
Warning sign Signal word Explanation
Danger!
a
Danger!
e
Warning!
a
Caution!
b
2.1.2 Structure of warnings
Warning signs are identified by an upper and lower sepa­rating line and are laid out according to the following basic principle:
Signal word!
Type and source of danger!
a
Explanation of the type and source of dan­ger.
> Measures for averting the danger
Imminent danger to life or risk of severe personal injury
Risk of death from electric shock
Risk of minor personal injury
Risk of material or environmental damage
4 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
Safety instructions and regulations 2
2.2 Intended use
The Vaillant solar heating system has been constructed using state-of-the-art technology in accordance with rec­ognised safety regulations. Nevertheless, there is still a risk of injury or danger of death to the operator or others or of damage to the unit and other property in the event of improper use or use for which the unit is not intended. These components of the Vaillant solar heating system are not intended to be used by persons (including chil­dren) with limited physical, sensory or mental capabili­ties or insufficient experience and/or knowledge, unless they are supervised by a person who is responsible for their safety or have been instructed by this person on how to use the unit. Children must be supervised to ensure that they do not play with the unit.
The purpose of the Vaillant solar heating system is to provide a solar-supported hot water supply. Vaillant auroSTOR VIH S GB 210/2 S, VIH S GB 260/2 S, and VIH S GB 310/2 S solar cylinders are unvented, indi­rectly heated domestic hot water cylinders for solar heating systems designed for use with gas-fired wall­hung boilers as per GB standards for hot water supply systems. The cylinders work with the pressure of the water supply line and do not need a cold water tank for their supply. They are used only to supply potable water heated up to 80 ºC by means of a solar collector array. They may only be used for this purpose. The cylinders can be used in combination with a downstream gas-fired wall-hung boiler for hot water production in accordance with GB standards. Any other use that is not specified in these instructions, or use beyond that specified in this document shall be considered improper use. Any direct commercial or industrial use is also deemed to be improper. The manufacturer/supplier is not liable for any claims or damage resulting from improper use. The user alone bears the risk. Intended use includes the following:
– observance of accompanying operating, installation and
servicing instructions for Vaillant products as well as for other parts and components of the system
– compliance with all inspection and maintenance condi-
tions listed in the instructions.
.
Improper use of any kind is prohibited!
At the end of these instructions there is a commission­ing report which you must fill in and hand over to the operator.
All installers should have a current ID card and registra­tion number. The cylinder must be installed by a compe­tent person approved at the time by the Health and Safety Executive to the prevailing standards, installation book and building regulations at the time of installation.
2.3 General safety instructions
Installation, commissioning, and maintenance
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.
All electrical wiring must be carried out by a competent electrician and be in accordance with the current I.E.E. Wiring Regulations.
> Make sure that the system has been planned in
accordance with technical regulations and all applicable planning standards.
Risk of death due to lack of safety devices
A lack of safety devices (e.g. expansion relief valve, expansion vessel) can lead to potentially fatal scalding and other injuries, e.g. due to explosions. The schematic drawings included in this document do not show all safety devices required for correct installa­tion.
> Install the necessary safety devices in the system. > Inform the operator about the function and position of
the safety devices.
> Observe the applicable national and international laws,
standards and guidelines.
Safety information on the solar heating system
> Mount and operate the entire solar heating system in
accordance with the recognised technical regulations.
> Make sure that all valid health and safety regulations are
observed, especially for work on the roof. Always use fall protection devices if there is a risk of falling. We recom­mend the use of a Vaillant safety belt. Observe the acci­dent prevention regulations of the professional associa­tions.
> Earth the solar circuit for potential equalisation and to
protect against overvoltage. Attach earthing pipe clamps to the solar circuit pipes and connect the clamps to a potential equalisation bar using 16 mm
2
Cu cable.
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 5
2 Safety instructions and regulations
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.
> When replacing parts, only original replacement parts
from Vaillant Ltd. may be used.
The installation must be approved in accordance with the building regulations.
> Installation plans must be disclosed to the relevant
authorities.
Important:
As stipulated in the manual "Handling Operations Regu­lations 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 corro­sion 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.
> 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.
> You must also make sure that the electric immersion
heater is connected to the earth line via the earthing ter­minal.
Risk of scalding and damage from escaping hot or cold water.
> If you use plastic pipes for the hot or cold water connec-
tion of the unit, you must only use pipes which are tem­perature-resistant up to 95 °C under a pressure of 1.0 MPa (10 bar).
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.
> Connect the expansion relief valve to a collecting
container via a metal pipe.
> Position an air vent or an air separator system in such a
way that persons are not endangered by escaping steam.
> 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)
Improper use and/or the use of unsuitable tools may result in damage (e.g. water leaks).
> Always use a suitable open-end wrench (spanner) to tigh-
ten or undo threaded connections. Do not use pipe wren­ches, extensions, etc.
If the water does not satisfy the standards for water quality in the UK with a maximum chloride content of
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 250 mg/l, this may result in corrosion damage to the cylinder.
> Only use the cylinder to heat potable water.
EN 1991-2-3
Eurocode 1 – Basis of design and actions on structures,
Part 2–3: Actions on structures - Snow loads
Avoiding burns and scalds
> 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.
> Fill and flush the solar heating system when the collec-
tors are cold. Cover the collectors while doing so.
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
6 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
Safety instructions and regulations 2
ENV 12977-1
Solar heating systems and components; Custom built systems, Part 1: General requirements
ENV 12977-2
Solar heating systems and components; Factory made systems, Part 2: Testing methods
ISO 9459-1: 1993
Solar heating – Domestic water heating systems – Part 1: System rating procedures using indoor test methods
ISO/TR 10217
Solar energy; Water heating system; Guideline for mate­rial selection with reference to internal corrosion
2.4.2 Cylinder and cylinder assembly
Pressure equipment directive 97/23/EC
Directive of the European Parliament and Council of 29th May 1997 for the approximation of the laws on pressure equipment of the Member States
EN 12977-3
Solar heating 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
2.5 Regulations for Great Britain
2.5.1 Technical Guidance
The system must be installed in accordance with all rele-
vant and applicable national regulations, and must be
installed to suit site conditions.
Observe all national regulations, including:
– Working at Heights Regulations 2005 – Health and Safety at Work Act 1974 – Electricity at Work Regulations 1989 – IEE Wiring Regulations BS 7671 – Lightning protection requirements – Equipotential bonding of electrical installations.
2.5.2 Related documents
The installation of the solar system must be in accord-
ance with the relevant requirements of Health and
Safety Document No. 635 (The Electricity at Work Regu-
lations 1989), BS7671 (IEE Wiring Regulations) and the
Water Supply (Water Fitting) Regulations 1999, or The
Water Bylaws 2000 (Scotland). It should also be in
accordance with the relevant requirements of the Local
Authority, Building Regulations, The Building Regulations
(Scotland), The Building Regulations (Northern Ireland)
and the relevant recommendations of the following
British Standards:
BS EN 806: Specification for installations inside build-
ings conveying water for human consumption
BS 6700: Services supplying water for domestic use
within buildings and their curtilages.
EN 806-1
Specifications for installations inside buildings conveying water for human consumption - Part 1: General
EN 1717
Protection against pollution of potable water installa­tions and general requirements of devices to prevent pollution by backflow
EN 60335-2-21
Safety of household and similar electrical appliances; Part 2: Particular requirements for storage water heat­ers (domestic hot water cylinders and hot water boilers) (IEC 335-2-21: 1989 and supplements 1; 1990 and 2; 1990, modified)
Lightning protection
ENV 61024-1
Protection of structures against lightning – Part 1: General principles (IEC 1024-1: 1990; modified) BS 6651: Code of practice for protection of structures against lightning
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 7
BS. 5449 Forced circulation hot water central heating
systems for domestic premises. Note: only up to 45 kW.
BS. 6880 Low temperature hot water heating systems
of output greater than 45 kW.
Part 1 Fundamental and design considerations.
Part 2 Selection of equipment.
Part 3 Installation, commissioning and maintenance.
BS 6114: Expansion vessels using an internal diaphragm
for unvented hot water supply systems
BS. 4814 Specification for: Expansion vessels using an
internal diaphragm, for sealed hot water heating sys-
tems.
Unvented hot water systems must comply with building
regulation G section 3.
2 Safety instructions and regulations 3 System description
2.5.3 Regulations for the prevention of accidents
When carrying out works such as solar installation work it is necessary to do so in a safe and workman like man­ner, taking due care of any aspects of the works that could result in injuries to person in or about the building as well as workers, passers by and the general public at large. To that end these works must conform, but not be limited to, the current regulations in force such as the following Health and Safety at Work act 1974 Work at Height Regulations 2005. Electricity at Work Regulations 1989 All necessary Building Regulations.
Work should be preceded by a risk assessment covering all aspects of health and safety risks, or training require­ments that can reasonably be foreseen to be associated with the work. All scaffolding in the UK, other than prefabricated (zip-up) scaffold towers, must be designed and constructed by a vetted contractor, and have suitable kick boards, hand rails and where appro­priate netting. Areas around the scaffolding should be zoned off and marked with suitable warning signs to a suitable distance to protect persons from falling objects. Workers should have available and use personal protec­tive equipment as necessary. This would include equip­ment such as fall protection systems, safety gloves, goggles, dust masks as well as any specialised equip­ment that may be in use such as lifting and handling equipment. The completed works shall comply with all necessary BS EN Standards and Codes of practice as well as Build­ing control or planning requirements and be confirmed where necessary by notification to building control or the appropriate competence based notification body.
3 System description
3.1 Design and function of solar heating system
The solar heating system consists of four main compo-
nents:
– The collectors, which absorb the solar radiation and
make it useful
– The solar controller, which monitors, displays, and cont-
rols all system functions
– The solar pump unit, which is responsible for trans-
porting the solar heat
– The solar cylinder
The Vaillant solar heating system is a closed hydraulic
system in which heat is transferred to the cylinder via
the heat exchanger with the help of the system's special
heat transfer fluid.
On days when the solar radiation is not sufficient to heat
the hot water in the cylinder, the cylinder water must be
reheated using a heating system. This can take place
using a gas-fired wall-hung boiler or an electric immer-
sion heater.
8 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
System description 3
6
7
8
9
C
M
3
10
D
DHW
12
2
5
M
5
M
Fig. 3.1 System for solar hot water production
Key
1 Gas-fired wall-hung boiler 2 Cylinder 3 Two port motorised valve (230 V, supplied with cylinder) 4 Electric immersion heater 5 Two port motorised valve (230 V) 6 Collector (tube collector with top connections (example) or flat
collector with top and bottom connections) 7 Solar pump unit 8 Solar protection and expansion vessel (Combined unit) 9 Collection canister for solar fluid
4
1
BA
10 Automatic air separator system 11 Hot water expansion vessel 12 Thermostat mixer A Primary heater flow B Primary heater return C Solar flow D Solar return DHW Hot water
11
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 9
3 System description
The collection canister for solar fluid collects
escaping solar fluid. The solar fluid must not
i i
i
The collector(6) converts solar energy into heat and transfers the heat energy to a frost-protected solar fluid. Using the pipe system, the solar pump of the solar pump unit (7) conveys the heat from the collector to the biva­lent cylinder (2). The solar pump unit is controlled by the solar controller.
The solar controller switches the solar pump on and off as soon as the temperature difference between the col­lector and cylinder exceeds or falls below the preset value. If the solar energy is not sufficient for require­ments, the controller activates the gas-fired wall-hung boiler (1) to reheat the top third of the cylinder to the set hot water temperature value. The water in the cylin­der can also be reheated using the electric immersion heater installed at the factory.
A solar expansion vessel compensates for pressure fluctuations in the solar circuit. A solar protection vessel protects the expansion vessel from excessive temperatures in the solar circuit. We rec­ommend installing a protection vessel. All Vaillant solar sets contain a combined solar protec­tion and solar expansion vessel (8).
reach the drainage system.
For the supply and return lines in the solar cir-
cuit, use insulated stainless steel pipes, e.g. the Vaillant Solar flexible pipe that is included in the scope of delivery of a Vaillant Solar set. Alterna­tively, you can also use copper pipes with press fittings and suitable insulation. Soft solder con­nections are not suitable for solar piping.
If a cylinder is fitted very high up in the building,
negative pressure may form in the cylinder. Under such circumstances, the competent per­son must decide whether an anti-vacuum valve is required in order to prevent damage to the cylinder. If, as a result of draining or thermal contraction of the drinking water, the negative pressure in the cylinder is too high, an anti-vac­uum valve ensures pressure compensation as a result of air flowing into the cylinder.
3.2 Electrical wiring
If you use an eBUS-compatible Vaillant gas-fired wall­hung boiler, you can use a Vaillant Control Centre for the wiring. If you are using a non-eBUS-compatible Vaillant gas­fired wall-hung boiler or a third-party boiler, you can use a standard cabling box. Section 6.8 of these instructions describes the electrical wiring of the system in detail.
3.3 Hot water temperature regulation
You can control the hot water temperature in the top third of the cylinder using an auroMATIC VRS 560/2 or a calorMATIC VRC470 with VR68/2 and VR61/2 or with a separate hot water controller.
Danger!
Risk of burns and scalds!
a
3.4 Heating control
If you are using an eBUS-compatible Vaillant gas-fired wall-hung boiler, you can control the heating using a programmable Vaillant VRT room thermostat or a VRC weather compensator. If you are using a non-eBUS-compatible Vaillant gas­fired wall-hung boiler or a third-party boiler, you can use a Vaillant VRT30 room thermostat or one of the room thermostats commonly available on the market.
Water at a temperature of more than 60 ºC could be delivered to the hot water draw-off points.
> Install a hot water thermostat mixer in
the hot water pipe to provide effective scald protection.
> Set the hot water thermostat mixer to
less than 60 ºC and check the tempera­ture at a hot water draw-off point.
10 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
4 Description of the components
4.1 auroSTOR solar cylinder
26
25
Description of the components 4
1
2 3
21
22
24
23
20
3
4
2
5
1
18
19
3
17
16
15
14
13
12
11
Fig. 4.1 auroSTOR solar cylinder function elements
10
4
67
5
9
8
Key
1 Hot water draw off 2 Expansion relief valve (6.0 bar) 3 Pressure reducing valve (3.5 bar) with line strainer 4 Cold water inlet 5 Pressure-controlled cold water inlet 6 Connection for hot water expansion vessel 7 Cylinder connection 8 Hot water expansion vessel 9 Tundish 10 Cylinder drain valve 11 Solar return 12 Solar yield temperature sensor (Ertrag) 13 Cold water inlet 14 Solar circuit thermal cut-out (TCO), set to 80ºC, to be con-
nected with the solar pump in order to isolate this heat source
if there is a fault in the solar control.
15 Solar circuit cylinder dry pocket (SP2) 16 Solar flow 17 2-pole isolating switch for electric immersion heater 18 Electric immersion heater with thermostat and thermal cut-out 19 Return (gas-fired wall-hung boiler) 20 Primary heating circuit cylinder dry pocket (SP1) 21 Primary heating circuit thermal cut-out, set to 80ºC, to be con-
nected to the two port motorised valve in order to isolate the
primary heat source if a fault occurs. 22 Cylinder thermostat (20 °C to 65 °C) 23 Two port motorised valve 24 Flow line (gas-fired wall-hung boiler) 25 Secondary return 26 Temperature and pressure relief valve (90 °C, 7 bar)
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 11
4 Description of the components
The auroSTOR solar cylinder is available in three sizes: 210, 260, and 310 litres. The cylinder is made from stain­less steel and is insulated with EPS with heat radiation absorbers. The cylinder is supplied along with all required cold and hot water control devices and a two port motorised valve. The cylinder works with the pressure of the water supply line and does not need a cold water tank for its supply. The cylinder has hot and cold water inlets with a diame­ter of 22 mm. To enable the cylinder to work as well as possible, a cold water supply with a dynamic pressure and flow rate that are appropriate for the system is required (¬ section 6.6.1).
4.1.1 Safety devices
The cylinder is delivered with all safety and control devices for the operation of the unvented domestic hot water supply system:
– Temperature and pressure relief valve (90 °C, 7 bar) – Pressure reducing valve (3.5 bar) with line strainer – Expansion relief valve (one-way valve, 6.0 bar) – Solar circuit thermal cut-out, set to 80 ºC, to be connec-
ted with the solar pump in order to isolate this heat
source if there is a fault in the solar control. – Thermal cut-out for electric immersion heater – Primary heating circuit thermal cut-out, set to 80 ºC, to
be connected to the two port motorised valve in order to
isolate the primary heat source if a cylinder thermostat
fault occurs.
The thermal cut-out and other safety devices must always be used.
4.1.2 Cylinder operating elements
8
3
4
5
6
5
Fig. 4.2 Cylinder operating elements
Key
1 Cover cap for reset button for primary heating circuit TCO 2 Primary heating circuit temperature controller 3 Electric immersion heater cover 4 Cover cap for reset button for solar circuit TCO 5 Solar circuit thermal cut-out (TCO) 6 Electric immersion heater 7 Cylinder thermostat 8 Primary heating circuit thermal cut-out
7
2
1
1
2
3
4
The following are pre-mounted at the factory for the auroSTOR solar cylinder:
– Cylinder thermostat (7) and primary heating circuit ther-
mal cut-out (8)
– Electric immersion heater(6) with thermal cut-out and
cylinder thermostat
– Solar circuit thermal cut-out (5)
The cylinder must be properly wired in order to comply with G3 building regulations.
12 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
Description of the components 4
Electric immersion heater
1
1
3
2
3
2
3
4
3
Fig. 4.4 Electric immersion heater operating elements
3
4
5
2
3
1
Fig. 4.3 Connection diagram for solar pump
Key
1 Solar controller or solar module 2 Terminal strip for series circuit to solar pump via TCO solar
circuit
3 Solar pump 4 Solar circuit thermal cut-out
You must connect the solar pump to the solar
controller via the solar circuit thermal cut-out
i
(5) (¬section 6.8). The thermostat switches the solar pump off if the hot water temperature in the cylinder exceeds 80 ºC. Set the maximum cylinder temperature (MAXT 1) to 75 °C (factory setting) on the auroMATIC VRS 560 solar controller.
Key
1 Electric immersion heater temperature controller 2 Electric immersion heater TCO reset button 3 Electric immersion heater
The cylinder is equipped with an additional electric immersion heater (3) with a heating output of 3 kW. The electric immersion heater is located behind the top front cladding. The electric immersion heater is designed for use in unvented cylinders and has a thermostat with a temperature controller (1) and a thermal cut-out (TCO) with a reset button (2).
If you need to make a replacement, you must
use the correct electric immersion heater with a
i
thermal cut-out for overheating protection. The seal of the electric immersion heater must also always be replaced. Use only original replace­ment parts from VaillantLtd.
Setting the hot water temperature
You can set the hot water temperature by pointing the arrow on the temperature controller (1) of the electric immersion heater to a number between 1 and 5. The fol­lowing table contains the approximate hot water temper­ature for each of the five settings.
Setting Hot water temperature
1 20 °C 2 35 °C 3 45 °C 4 60 °C 5 68 °C
Table 4.1 Setting the hot water temperature
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 13
4 Description of the components
4.2 Solar fluid
4.2.1 Properties of solar fluid
This information applies to Vaillant solar fluid (20l canister: article number 302498 and 10l canister: article number 302363). Vaillant solar fluid is a ready-mixed frost and corrosion protection agent, consisting of approximately 45% propylene glycol with anti-corrosion inhibitors and 55% water.
Vaillant solar fluid is extremely temperature-resistant and can be used in conjunction with Vaillant tube collec­tors and Vaillant flat collectors. The solar fluid also has a high heat capacity. The inhibitors provide reliable corrosion protection when different types of metal are used (mixed installations).
Caution!
Risk of damaging the collectors and
b
i
other system parts if unsuitable solar fluid is used.
If you mix the solar fluid with water or another liquid, frost and corrosion protec­tion cannot be ensured.
> Never mix the solar fluid with water
or another liquid.
Do not use any other frost protection agents or
inhibitors for the Vaillant solar heating system. Only Vaillant's solar fluid is permitted for use with the system.
4.2.2 Solar circuit frost and corrosion protection system
In order to reliably protect the solar heating system from frost in winter, you must fill the entire system with undiluted Vaillant solar fluid.
Filling the solar heating system with Vaillant
solar fluid provides frost protection up to
i
We recommend the Vaillant refractometer for quick and simple checking. A classic Vaillant frost protection tester can be used for this. See the enclosed operating instructions.
4.2.3 Cylinder frost protection
If you want to put a cylinder out of operation where it may be at risk from frost, you must drain it completely. It is drained at the cold water inlet with a T-piece with tap to be provided by the installer. Any heat exchangers not filled with solar fluid in rooms which are at risk of frost must also be completely drained.
approx. -28 ºC. Even at outside temperatures of lower than
-28 ºC, frost damage does not occur straight away since the explosive effect of the water is distributed. Check the frost protection effect after filling the system and then once every year.
Vaillant solar fluid is infinitely durable in hermetically sealed containers. It is not dangerous if it comes into contact with the skin. Eye contact only causes minor irritations, you should nevertheless immediately wash your eyes. Pay attention to the safety data sheet (¬section 4.2.4).
14 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
Description of the components 4
4.2.4 Safety data sheet for Vaillant solar fluid
1) Name of substance/preparation and company details:
1a) Trade name:
Vaillant ready-mixed solar fluid
1b) Use:
Heat transfer fluid for solar heating systems
1c) Company:
Vaillant GmbH Berghauser Str. 40 42859 Remscheid, Germany Tel. 0049 (0) 2191 18-0, Fax 0049 (0) 2191 18-2810
1d) Emergency information:
your local poison information centre (see directory assistance or telephone directory).
2) Possible dangers:
2a) Special danger indications for people and the
environment: Not required!
3) Composition/information on ingredients:
3a) Chemical nature:
Aqueous solution of 1.2-propylene glycol (CAS no.: 57-55-6) with corrosion inhibitors.
3b) Hazardous ingredients:
1,1’-iminodipropan-2-ol content (w/w): > 1 % - < 3 %, CAS no.: 110-97-4 EC no.: 203-820-9, hazard symbol: Xi INDEX no: 603-083-00-7, R phrases: 36
If hazardous ingredients are named, the wording for
the hazard symbols and R phrases will be provided in Point 16.
4) First aid measures:
4a) General information:
Remove dirty clothes.
4b) After inhalation:
Discomfort after inhaling fumes/aerosol: fresh air, help from a doctor.
4c) After skin contact:
Wash off with water and soap.
4d) After contact with the eyes:
Thoroughly rinse out with running water for at least 15 minutes with the eyes open.
4e) After swallowing:
Rinse mouth and drink lots of water.
4f) Information for the doctor:
Treatment of symptoms (decontamination, vital function), no specific antidote known.
5) Firefighting measures:
5a) The product is not flammable. Surrounding fire can be
combated with sprayed water, dry extinguishers, alco­hol-resistant foam, and carbon dioxide (CO
5b) Special dangers: Fumes which are detrimental to
health. Formation of smoke/mist. The specified subs­tances/substance groups may be released in the event of a fire.
5c) Special protection equipment: Wear a breathing appa-
ratus which is independent of the circulating air in the event of a fire.
5d) Further information: The dangers depend on the bur-
ning substances and the fire conditions. Polluted fire water must be disposed of according to local official regulations.
6) Measures in the case of accidental release:
6a) Precautions to protect persons:
No particular measures required.
6b) Measures to protect the environment:
Contaminated water/fire water must be withheld. It must not be discharged into bodies of water without being pre-treated first (in a biological waste water treatment plant).
6c) Cleaning/collection procedure:
Contain any escaped material and cover with large quantities of sand, soil, or another absorbing material; then sweep enthusiastically to promote absorption. Fill the mixture into containers or plastic bags and take away for disposal.
Wash away small amounts (splashes) with large quan-
tities of water. For large quantities, pump out the pro­duct, collect it up and take it away for disposal. If lar­ger quantities may have entered the drainage system or water bodies, contact the responsible water autho­rities.
7) Handling and storage:
7a) Handling:
No particular measures required.
7b) Fire and explosion protection:
No particular measures required.
7c) Storage:
Containers must be closed so that they are airtight and stored in a dry location. Galvanised storage containers must not be used.
).
2
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 15
4 Description of the components
8) Exposure prevention and personal protective equip­ment:
8a) Personal protective equipment:
Breathing protection: Breathing protection if vapours/aerosols are released. Hand protection: chemical-resistant protective gloves (EN 374). Recommended: Nitrile rubber (NBR), protection class
6. Owing to the large variety of types, observe the manufacturers' operating instructions. Eye protection: Safety glasses with lateral protection (framed glasses) (EN 166)
8b) General protection and hygiene measures:
The usual precautions for working with chemicals must be observed.
9) Physical and chemical properties:
Form: Liquid. Colour: Fluorescent red. Smell: Product-specific. Freezing point: Approx. -25 ºC (ASTM D 1177) Solidification point: Approx. -31 ºC (DIN 51583) Boiling point: >100 ºC (ASTM D 1120) Flashpoint: N/A Lower explosion limit: 2.6 vol% (propylene glycol) Upper explosion limit: 12.6 vol% (propylene glycol) Ignition temperature: N/A Vapour pressure (20° C): 20 mbar Density (20 ºC): Approx. 1,030 g/cm
3
(DIN 51757) Solubility in water: Completely soluble Solubility in other solvents: Soluble in polar
solvents
pH value (20 ºC): 9.0 - 10.5 (ASTM D 1287)
2
Viscosity (kinematic at 20 ºC): Approx. 5.0 mm
/s (DIN
51562)
10) Stability and reactivity:
10a) Substances to be avoided:
Strong oxidants
10b) Hazardous reactions:
No dangerous reactions if the storage and handling regulations/notes are observed
10c) Hazardous decomposition products:
No dangerous decomposition products if the storage and handling regulations/notes are observed.
11) Toxicology information:
LD50/oral/rat: > 2000 mg/kg
Primary skin irritation (rabbits): Non-irritant (OECD Directive 404). Primary mucous membrane irritation (rabbits): Non-irritant (OECD Directive 405).
11a) Additional information:
The product has not been checked. The statements are derived from the properties of the individual com­ponents.
12) Ecology information:
12a) Ecotoxicity:
Fish toxicity: Leuciscus idus/LC50 (96 h): > 100 mg/l Aquatic invertebrates: EC50 (48 h): > 100 mg/l Aquatic plants: EC50 (72 h): > 100 mg/l Micro-organisms/effect on activated sludge: DEV-L2 > 1000 mg/l. If low concentrations are pro­perly introduced into adapted biological waste water treatment plants, no disturbances of the degradation activity of activated sludge are to be expected.
12b) Assessment of aquatic toxicity:
The product has not been checked. The statements are derived from the properties of the individual com­ponents.
12c) Persistence and degradability:
Details regarding elimination: OECD 301A test method (new version) Analysis method: DOC acceptance Degree of elimination: > 70 % Assessment: easily biodegradable.
13) Information on disposal:
13a) Disposal:
When disposing of the fluid, you must observe all local regulations, e.g. take the waste to a suitable dump or incinerator. For quantities of less than 100 l, contact the local city cleaning department or mobile environmental service.
13b) Contaminated packaging:
Uncontaminated packaging can be reused. Packaging that cannot be cleaned must be disposed of in the same way as the material.
14) Information on transport:
Not dangerous goods in terms of the transport
regulations. (ADR RID ADNR IMDG/GGV, see ICAO/IATA)
15) Legislation:
15a) European Union legislation (labelling)/national
regulations: EU Directive 1999/45/EC (Dangerous Preparations Directive): No labelling obligation
15b) Other legislation:
Water hazard class 1: Low hazard to water (Germany, VwVwS of 17.05.1999).
16 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
Description of the components 4
16) Other information
Complete wording for hazard symbols and R phrases
if stated in "Hazardous ingredients" in section 3: Xi: Irritant. R36: Irritates the eyes. All information which has been changed since the last edition is identified by means of a vertical slash on the left-hand side of the passage in question. In such cases, the information shown in older editions loses its validity. The safety data sheet is intended to communicate the most important physical, safety-related, toxicological, and ecological information to be observed when wor­king with chemicals and preparations and to provide recommendations for safe use and/or storage, hand­ling, and transport. No liability is assumed for damage in connection with the usage of this information or the usage, application, adaptation or processing of the products described here. This does not apply as long as we, our statutory agents or assistants are liable in the event of intention or gross negligence. No liability is assu­med for indirect damage.
This information has been compiled to the best of our
knowledge and conscience according to our current state of knowledge. No guarantee can be made for product properties.
17) Valid as of: 01.01.2009 Created by: Vaillant GmbH.
4.3.1 Vaillant controllers and their basic functions
VRS560/2 solar controller
The auroMATIC 560/2 solar controller is a differential temperature-controlled control set for solar-aided hot water production with demand-controlled primary heat­ing for Vaillant gas-fired wall-hung boilers. The control set is a fully equipped system for solar heat­ing systems with a collector array and cylinder. If a solar yield temperature sensor (VR 10, supplied with controller) is connected, the solar yield can be recorded.
Control Centre
A Vaillant Control Centre provides a system solution which allows the Vaillant dual-channel eBUS controller (low-voltage) to be used in the English market with valves and domestic hot water cylinders with conven­tional 230 V cylinder thermostats. The Control Centre sends the information on the heat requirement of the cylinder to the Vaillant ecoTEC gas­fired wall-hung boiler. The gas-fired wall-hung boiler decides whether a hot water requirement needs to be met and sends a signal to control the 230 V valves via the Control Centre. The gas-fired wall-hung boiler can thus hold different set temperature values for heating mode and for hot water handling. A Control Centre can be used to integrate commonly available 230 V S plan or Y plan components into the Vaillant eBUS system.
4.3 System configuration
The Vaillant solar heating system enables various sys­tem configurations and control types in accordance with the connection wiring diagrams 1 to 6 (¬section 6.8).
Single-channel eBUS controllers are not suitable
for this system configuration.
i
Wiring
If you use an eBUS-compatible Vaillant gas-fired wall­hung boiler, you can use one of the Vaillant Control Cen­tres to wire the system. For all other gas-fired wall-hung boilers, you can use a standard cabling box.
VRC weather compensator (VRC430, VRC430f, VRC470, VRC470f)
A VRC controller controls the solar heating system in a weather-compensated and time-dependent manner with or without hot water production/a circulation pump in conjunction with a Vaillant gas-fired wall-hung boiler with an eBUS interface and the Vaillant VR68/2 solar module.
Solar module VR 68/2
The VR68/2 solar module integrates a solar heating sys­tem into the control concept of a VRC controller. In con­junction with a VRC controller , various solar heating system configurations can be implemented and the solar yield recorded. You can combine the VR68/2 solar mod­ule with a VR61/2 mixer module in a solar heating sys­tem.
VR 61/2 mixer module
The VR61/2 mixer module is a system component which controls a cylinder charging circuit or circulation pump in conjunction with a VRC controller. You can use the VR 61/2 mixer module to control a solar heating system for the heating of potable water in conjunc­tion with a VRC controller and the VR68/2 solar module.
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 17
4 Description of the components
4.3.2 Control functions
Hot water temperature control
The hot water temperature in the top half of the cylinder can be controlled in one of the following ways:
– Vaillant auroMATIC VRS 560/2 solar controller or – using one of the Vaillant Control Centre‘s with the Vail-
lant dual-channel eBUS controller
– Vaillant VRC weather compensator with VR 61/2 mixer
module and VR68/2 solar module or
– using the cylinder thermostat in conjunction with a timer.
If you are using a controller by a third-party manufac­turer, you use this controller to adjust the hot water temperature. In this case, the Vaillant controller (e.g. auroMATIC 560/2) acts only as a solar controller and only controls the temperatures for solar water heating.
Solar circuit control system
The solar circuit can be controlled in one of the follow­ing ways:
VRS560/2 (connection wiring diagrams 1, 2, 3, 4, and 6, ¬section6.8)
The lower cylinder sensor (SP 2) and the solar yield temperature sensor are connected up to the VRS 560/2. The solar pump is controlled via the VRS560/2.
VRC with VR 68/2 (connection wiring diagram 5, ¬ section 6.8)
The lower cylinder sensor (SP 2) and the solar yield temperature sensor are connected up to the VR68/2. The solar pump is controlled via a VRC.
Kol 1
230 V~
7
6
C
D
Fig. 4.5 Temperature differential control of solar pump
Key
1 Solar controller or solar module 2 Gas-fired wall-hung boiler 3 Solar cylinder 4 Solar circuit thermal cut-out 5 Solar yield temperature sensor 6 Solar pump 7 Solar pump unit Kol 1 Collector sensor for flow line collector temperature SP1 Cylinder sensor for upper cylinder temperature
(primary heating circuit/standby section) SP2 Cylinder sensor for lower cylinder temperature (solar circuit) A Primary heater flow B Primary heater return C Solar flow D Solar return
5
3
SP 1
4
SP 2
A
1
2
B
Temperature differences, not absolute temperature val­ues, are important for the operation of solar heating systems. For this reason, solar heating systems are con­trolled via temperature differential controllers. Integrated temperature sensors record the temperature difference between the collector and the cylinder. If the temperature difference (Kol 1–SP2) is larger than 7K, the solar heating system's solar pump is switched on. If the temperature difference (Kol 1–SP2) is smaller than 3K, the solar heating system's solar pump is switched off.
18 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
Description of the components 4
Primary heating circuit control system
The primary heating circuit can be controlled in one of the following ways:
Vaillant dual-channel eBUS controller with Vaillant Control Centre (connection wiring diagrams 1 and 2, ¬section 6.8)
Important:
Terminals NTC and CYL. of the Vaillant Control Centre may not be connected at the same time.
– Option 1: The upper cylinder sensor NTC is connected to
terminal NTC of the Vaillant Control Centre.
The recharging of the cylinder is controlled via the eBUS controller. Here, the cylinder temperature is measured using the cylinder sensor NTC. The temperature is com­pared with the target value programmed in the eBUS controller and the cylinder is reheated if necessary.
– Option 2: The cylinder thermostat is connected
up to terminal CYL. of the Vaillant Control Centre.
The recharging of the cylinder is triggered via the cylin­der thermostat. If the actual value falls below the target temperature set on the cylinder thermostat, the cylinder thermostat is shut. The closing of the cylinder thermo­stat is registered by the Vaillant Control Centre and passed onto the eBUS controller. The eBUS controller releases the recharging of the cylinder for the programmed primary heating times: The primary heating device activates and the Vaillant Control Centre switches the zone valves into the correct position for the recharging of the cylinder. The required zone valve position differs depending on whether the S plan is being used:
– S plan: Valve CH closed, valve DHW open.
VRS560/2 (connection wiring diagrams 3 and 4, ¬section6.8)
The upper cylinder sensor is connected to the terminal SP1 of the VRS560/2. The output EP of the VRS 560/2 is connected to the input CYL. of the Vaillant Control Centre. The recharging of the cylinder is controlled via the VRS 560/2. Here, the sensor SP1 measures the cylinder temperature. The temperature is compared with the pro­grammed target value in the VRS560/2. Within the primary heating times programmed in the VRS560/2, the contact EP is closed if the actual value falls below the target temperature for the cylinder. The closing of the contact EP is registered by the Vaillant Control Centre and the recharging of the cylin­der is triggered: The primary heating device activates and the Vaillant Control Centre switches the zone valves into the correct position for the recharging of the cylin­der. The required zone valve position differs depending on whether the S plan is being used:
– S plan: Valve CH closed, valve DHW open.
Vaillant dual-channel eBUS controller with VR68/2 (connection wiring diagram 5, ¬section 6.8)
The upper cylinder sensor is connected to the terminal SP1 of the VR68/2. The recharging of the cylinder is controlled via the eBUS controller, which is connected with the VR68/2 and VR61/2 via eBUS. The zone valves are switched via the VR61/2 (valve DHW open, heating circuit valve closed).
VRS560/2 in conjunction with non-eBUS-compatible controllers (connection wiring diagram 6, ¬section6.8)
The upper cylinder sensor is connected to the terminal SP1 of the VRS560/2. The output EP of the VRS560/2 is connected to the wiring of the S plan via the cylinder thermostat. Important: The target temperature on the cylinder thermostat must be set to the maximum temperature!
The recharging of the cylinder is controlled via the VRS 560/2. Here, the sensor SP1 measures the cylinder temperature. The temperature is compared with the pro­grammed target value in the VRS560/2. Within the primary heating times programmed in the VRS560/2, the contact EP is closed if the actual value falls below the target temperature for the cylinder. The switching signal is coupled into an S plan and the recharging of the cylinder is triggered.
Room heating control
The room heating can be controlled in one of the follow­ing ways:
Vaillant dual-channel eBUS controller with Vaillant Control Centre (connection wiring diagrams 1, 2, 3, and 4, ¬section 6.8)
The room heating is controlled by the Vaillant eBUS controller. The actuation of the valves (S plan plan) is controlled by the Vaillant Control Centre.
Vaillant dual-channel eBUS controller with VR61/2 (connection wiring diagram 5, ¬section 6.8)
The room heating is controlled by the Vaillant eBUS controller. The actuation of the valves (S plan plan) is controlled by the VR61/2.
Programmable timer and room thermostat (connection wiring diagram 6, ¬section6.8)
The room heating is controlled using a programmable timer and a room thermostat. The actuation of the valves (S plan) is realised via the programmable timer and DHW timer.
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 19
4 Description of the components
4.3.3 Technical data of the auroSTOR solar cylinder
Unit VIH S GB 210/2 S VIH S GB 260/2 S VIH S GB 310/2 S
Total capacity litres 210 260 310 Actual capacity litres 209,4 254,4 297,2 Hot water capacity (upper coil) litres 104,8 142,0 144,2 Hot water capacity (solar coil) litres 203,3 246,1 271,1 Dedicated solar volume litres 104,6 112,4 153,0 Maximum supply pressure to pressure reducing valve MPA (bar) 1,2 (12) Rated pressure of cylinder MPA (bar) 0,7 (7) Maximum operating pressure of heating coil MPA (bar) 0,35 (3,5) Maximum operating pressure of solar coil MPA (bar) 0,6 (6) Operating pressure MPA (bar) 0,35 (3,5) Pressure limiting valve MPA (bar) 0,35 (3,5) Expansion relief valve MPA (bar) 0,6 (6) Temperature and pressure relief valve °C,
Charge pressure of hot water expansion vessel MPA (bar) 0,4 (4) Maximum temperature of heating circuit °C 85 Maximum temperature of potable hot water °C 85 Maximum temperature of solar fluid °C 85 Standing heat loss kW/24 h 1,98 2,15 2,35 Heat up time according to EN 12897 mins 20 27 28 Recovery time (70% capacity) mins 15 20 21 Primary heat exchanger performance kW 16,7 16,5 16,0 Flow rate for primary heat exchanger performance l/min 23,3 Primary heat exchanger pressure drop mbar 79 78 79 Primary heat exchanger volume Liter 2,37 Primary heat exchanger surface area m Heat up time according to EN 12897 (solar) min 32 40 49 Solar heat exchanger performance kW 19,7 19,5 17,2 Flow rate for solar heat exchanger output l/min 23,3 Solar heat exchanger pressure drop mbar 97 95 98 Solar heat exchanger volume Liter 2,94 Solar heat exchanger surface area m
Dimensions
Height mm 1593 1843 2153 Height with hot water draw off mm 1625 1875 2185 Topple measure mm 1680 1918 2217 Diameter mm 554,5 Depth mm 633 Net weight kg 40 43 50 Weight (full) kg 249 298 347
Connections
Cold water inlet 22 mm unprofiled pipe (crimp joints) Hot water draw off 22 mm unprofiled pipe (crimp joints) Balanced pressure cold water outlet 22 mm unprofiled pipe (crimp joints) Secondary return 15 mm unprofiled pipe (crimp joints) Primary heater flow 22 mm unprofiled pipe (crimp joints) Primary heater return 22 mm unprofiled pipe (crimp joints) Solar flow 22 mm unprofiled pipe (crimp joints) Solar return 22 mm unprofiled pipe (crimp joints) Primary heating circuit cylinder dry pocket size mm 8 Solar circuit cylinder dry pocket size mm 8
MPA (bar)
2
2
90,
0,7 (7)
0,5
0,62
Tab. 4.2 Technical data for auroSTOR solar cylinder
20 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
Description of the components 4
Unit VIH S GB 210/2 S VIH S GB 260/2 S VIH S GB 310/2 S
Electrical connections
Immersion heater (according to EN BS 60335) 2.7 kW, 230 V, 50 Hz Length of immersion heater inch 14 Two port motorised valve 230/240 V, 50 Hz Cylinder thermostat 230/240 V, 50 Hz Thermal cut-out solar 230/240 V, 50 Hz
Material data
Cylinder body material Stainless steel (1.4521) Cylinder jacket material Polypropylene Insulation material EPS with infrared absorber Insulation thickness mm 50 Corrosion protection Stainless steel Blowing agent for insulation material Pentane (GWP < 5) ODP 0
Tab. 4.2 Technical data for auroSTOR solar cylinder (continued)
The heat up time is based on a flow rate
of 1400l/h at 80 ºC.
i
Temperature rise from 15 ºC to 60 ºC.
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02 21
4 Description of the components
4.3.4 Dimensions
a
b
c
d
1
2
3
4
5
6
7
8
9
10
11
e
f
g
h
633
Ø 554,5
i
j
k
l
Fig. 4.6 Dimensions of the auroSTOR solar cylinder
Key
1 Hot water draw off 2 Temperature and pressure relief valve connection 3 Secondary return 4 Primary heater flow 5 Primary heating circuit cylinder dry pocket (SP 1)
Unit type a b c d e f g h i j k l
VIH S GB 210/2 S 1625 1593 1341 1158 1052 912 822 802 534 506 259 51 VIH S GB 260/2 S 1875 1843 1591 1346 1102 962 872 852 534 506 259 51 VIH S GB 310/2 S 2185 2153 1901 1578 1377 1237 1147 1127 534 506 259 51
Tab. 4.3 Dimensions
6 Primary heater return 7 Electric immersion heater 8 Solar flow 9 Solar circuit cylinder dry pocket (SP 2) 10 Cold mains inlet connection 11 Solar return
25°
45°
22 Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
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