VOKERA ETV-10 Installation & Servicing Instructions Manual
THESE INSTRUCTIONS
TO BE RETAINED
BY USER
Installation
& Servicing
Instructions
Vokèra is a licensed member of the Benchmark scheme
which aims to improve the standards of installation and
commissioning of domestic hot water systems in the UK.
ETV-10
ETV-102
MODEL CODE
ETV-1025 20026323
ETV-1025 conf. x5 20031295
ETV-1035 20031297
ETV-1035 conf. x5 20031298
Solar collectors conform to EN 12975 standard
and to Solar Keymark certification standard.
CONFORMITY
RANGE
ETV-10 3
GENERAL
General safety information and precautions page 4
Description of the solar collector “ 5
Identification “ 5
Design “ 6
Technical specifications “ 7
Accessories “ 8
Collectors connection “ 8
Water circuit “ 9
Location of probes “ 10
FOR THE INSTALLER
Unpacking the collector page 11
Dimensions and weight “ 12
Handling the collector “ 13
Installation “ 13
Filling the circuit “ 15
Controls “ 16
TECHNICAL ASSISTANCE CENTRE
Maintenance page 17
The following symbols are used in some parts of this
booklet:
b CAUTION = actions that require special care
and suitable preparation
a PROHIBITED = actions that absolutely must
NOT be carried out
This booklet, code 20026421 - Rev. 2 (11/10), contains
20 pages.
CONTENTS
ETV-104
GENERAL SAFETY INFORMATION AND PRECAUTIONS
b
As soon as you open the packaging, check immediately that the contents are all present and undamaged. Contact the reseller from whom you purchased the solar collector if you notice any problems.
b
This solar collector must be used only for the proper
purpose for which it is designed and made.
The manufacturer declines all responsibility, con-
tractual or other, for damage to property or injury to
persons or animals caused by improper installation,
adjustment, maintenance or use.
b
The solar collector must be serviced every six months.
b
Work near uncovered and live electrical wires, with
which it is possible to come into contact, is only
permitted under the following conditions:
- wires must be free from voltage for the entire
duration of the work
- parts remaining live must be covered or accidental
contact prevented
- the following minimum safety distances must be
respected:
1 m for voltages of up to 1000 Volts
3 m for voltages from 1000 to 11000 Volts
4 m for voltages from 11000 to 22000 Volts
5 m for voltages from 22000 to 38000 Volts
over 5 m if the voltage is not known.
Contact with open, live electrical wires may lead to
electrocution and may even be fatal.
b
Always wear safety goggles when drilling. Always
wear safety shoes, cut-proof protective gloves and
a safety helmet when performing installation work.
b
Before beginning installation work on roofs, install
the necessary fall prevention and fall arrest devices
and ensure that all applicable safety standards are
applied.
Use only tools and materials that conform to the
safety standards that are applicable in the place of
work.
b
Only wear overalls that have a safety harness (with a
suitable safety or fall-arrest belt, ropes or slings, fall
dampers or dissipaters). In the absence of adequate fall prevention and security devices, failure to use
a proper safety harness may lead to falls from great
heights with serious or even fatal consequences.
b
The use of ladders leaned against walls can lead to
serious falls if the ladder slips, slides of falls.
When using ladders, always ensure that they are
stable, and that suitable ladder stops are present.
If possible secure the ladder with hooks. Make sure
that there are no live electrical wires near the ladder.
b
Especially when installing the solar collector as part
of a domestic hot water system, follow the orientation and angle of the roof to ensure that the collector
blends in with the architecture of the building.
b
This instruction manual is an integral part of the solar
collector. It must be kept safe and must ALWAYS
accompany the solar collector, even if it is sold to
another owner or transferred to another user or to
another installation. If you lose this manual, order a
replacement immediately from your local Technical
Assistance Centre.
ETV-10 5
CODICE:
20025360
DESCRIZIONE: CTE25V
S/N:
COLLETTORE SOLARE SOTTOVUOTO
DIMENSIONI: 1600X1730X145 mm
SUPERFICIE LORDA: 2,77 m
2
TEMP. DI STAGNAZIONE: 236°C
SUPERFICIE D I APERTURA: 2,40 m
2
CONTENUTO LIQUIDO: 2,05 l
SUPERFICIE ASSORBITORE: 2,69 m
2
MAX CONCENTRAZIONE GLICOLE: 50 %
PESO A VUOTO: 52 kg LIQUIDO TERMOVETTORE:
ACQUA+GLICOLE PROPILENICO
COLLEGAMENTO IN SERIE FINO
20022981_E1
AD UN MASSIMO DI 6 COLLETTORI
MAX PRESSIONE ESERCIZIO: 10 bar
FABBRICATO IN ITALIA
da Riello S.p.A.
CEN 025
EN 12975
Certif. XXXX
Anno di produzione
10xxxxxx
The solar collectors are identified by two plates:
b If these plates or any other means of clearly identifying the product are defaced, removed or lost, proper installa-
tion and servicing may be rendered difficult.
- Data plate
This lists the technical specifications and performance of the product.
- Serial number plate
This bears the collector’s code number, model and serial number.
Code
Year of production
Serial Number
Description
Made in Italy
by Riello S.p.A.
Evacuated
solar collector
Dimensions
Gross area
Aperture area
Absorber area
Empty weight
Max. operating pressure
Stagnation temperature
Liquid content
Max glycol concentration
Heat transfer fluid:
water+propylene glycol
Up to max 6 collectors can be connected
DESCRIPTION OF THE SOLAR COLLECTOR
IDENTIFICATION
Serial number
Model
Code
ETV-10 collectors are made up of 14 or 20 double sleeve evacuated glass tubes, each of which contains a "U"
shaped copper pipe. These copper pipes are connected
in parallel and filled with heat transfer fluid that descends
and rises to absorb the heat generated by solar radiation,
direct and reflected by a mirror known as a compound
parabolic concentrator. There is a vacuum inside the
double sleeved glass tubes. This provides effective thermal insulation (on the same principle as a vacuum flask)
and permits the collectors to generate heat from the sun
even in bad weather and in the winter. The outside of the
internal pipes is finished in a selective absorbent coating.
The main characteristics of the ETV-10 collector are as
follows:
- Evacuated tube technology for high temperatures and
high efficiency even in bad weather.
- Circular absorbers and CPC mirrors for maximum
absorption even in oblique light.
- Long working life, with no metal parts passing through
the glass tubes to cause loss of vacuum.
- Constant absorption over time, thanks to a selective
coating that is well protected inside the vacuum environment.
- Easy replacement of glass tubes without having to
empty the solar heating circuit.
- Elegant design.
ETV-106
Aluminium absorber
Insulation
Top pipe
Bottom pipe
Collector
return
Collector
outlet
Collector
probe socket
Glass
Vacuum
Absorbent
coating
Support frame
Direction of flow
Reflective
mirror
Collector
foot
Evacuated
tube
Seal
To p
cover
plat
DESIGN
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