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1. General information
This document is intended for the installer and the end user. It must
therefore be handed over to the end user or to the person in charge of
managing the system after the system has been installed and started.
The manufacturer is not responsible for damages resulting from failure to
follow these instructions and those contained in any additional documents
delivered with the system.
Cordivari Favignana Solar Thermal Systems have been designed and
manufactured for producing domestic hot water using solar energy.
Any use of the product other than the one stated in this document relieves
the manufacturer of any liability and will void any warranty.
1 .1 Symbols used
General hazard
Dangerous electrical voltage
Risk of falling from height
Danger: suspended loads
Mandatory eye protection
A protective helmet must be worn
Protective footwear must be worn
Protective gloves must be worn
Personal protective equipment against falls must be worn
Context information
2. Standards
• UNI EN ISO 9488 - Solar energy - Vocabulary
• UNI EN 12976-1 - Solar thermal systems and components - Factory
• made systems - Part 1: General requirements
• UNI EN 12976-2 - Solar thermal systems and components - Factory
made systems - Part 2: Test methods
• ISO 9459-2 - Solar heating - Domestic water heating systems - Part
2: Outdoor test methods for system performance characterization and
yearly performance prediction of solar-only systems
• UNI EN 1991 1-2, 1-3 and 1-4 – Actions on structures, snow loads
and wind action
User manual
2.1 Water quality specifications
The values shown below are an extract of Annex I Part C of the Legislative
Decree No. 18 of 23 February 2023 and subsequent amendments,
implementing the (EU) Directive 2020/2184 relating to the quality of
water intended for human consumption:
PARAMETER
PH
Chloride
Iron
Sulphate
Residual disinfectant
As for water hardness we refer to the UNI CTI 8065 standard, which
defines such values for domestic hot water systems:
PARAMETER
Durezza
Caution!
If the specifications on water quality deviate from the
parameters shown in the chart, any warranty will become
null and void. In that case, provide an adequate water
purification/ softening unit upstream of the system.
3. Favignana solar system - Description and
operation
Favignana Solar Thermal Systems have been developed to heat water
for domestic purposes using solar energy in areas not subject to freezing
temperatures.
If it is necessary to install a Favignana system in a location
potentially subject to temperatures well below 0°C, it is
recommended to equip the system with the "Electrical
Integration Kit" accessory (not supplied), which, in addition
to integrating the water heating function with electricity, is
also capable of protecting the DHW tank against the damage
that can be caused by the water in the domestic water circuit
freezing. Capturing tubes, by their very nature, are not subject
to potential frost damage.
The installation of an electrical integration kit must be
performed by a qualified professional equipped with all the
necessary personal protective equipment, and in accordance
with the instructions provided by the manufacturer in the
unit's user instructions.
The main components of the Favignana System are the following:
• Support structure;
• Capturing tubes;
• Solar DHW tank;
• Safety valves;
In case of sufficient radiation, the structure of the system and its
components allows for thermal energy transfer between capturing tubes
and DHW tank from domestic hot water contained in the DHW tank.
All without the need for any auxiliary energy sources to activate the
circulation.
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UNIT OF
VALUE
MEASUREMENT
PH unit
mg/l
µg/l
mg/l
mg/l
UNIT OF
VALUE
MEASUREMENT
°f
Cod. 1910000002148 - nv00
7-9
<250
<200
<250
<0.2
15-25
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