Wolf CFK-1 Istruzioni per il montaggio
Installation, operating and
maintenance instructions
High performance solar collector
CFK-1
Roof top installation with
AluPlus installation system
Single-row roof integration
Wolf GmbH, Postfach 1380, D-84048 Mainburg, Tel. +498751/74-0, Fax +498751/741600, Internet: www.wolf-heiztechnik.de
3062815_201508 Subjecttotechnicalmodications GB
P 9
23062815_201508
Contents
Contents Standards and regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Safety instructions /
Protection against lightning ......................................5
Snow and wind loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Information on system hydraulics..................................7
Information regarding the system hydraulics .........................8
General preparations ...........................................9
Rooftop installation - General....................................11
Rooftop installation -
Interlocking tiles, plain tiles......................................13
Rooftop installation - Slate tiles ..................................15
Rooftop installation - Corrugated roof..............................16
Roof integration - Interlocking tile.................................18
Roof integration - Slate roof .....................................24
Roof integration - Mönch-Nonne .................................31
Fitting the sensors ............................................37
Filling the system / Safety datasheet / Initial start-up ..................38
Pressure testing / Venting the system .............................39
System operating pressure......................................40
Commissioning check list .......................................41
Operation / Inspection and service................................42
Inspection and service checklist..................................44
Faults - Causes - Remedies.....................................47
Product fiche according to Regulation (EU) no. 811-812/2013 ..........48
Notes ......................................................50
Declaration of Conformity.......................................52
Additional installation instructions are available for the following assembly
systems:
- Alu-Flex-Uinstallationframeforat-roofandwallmounting
- Roof integration set 2-row, or 3-row for interlocking tiles
Note:
3
3062815_201508
Specication
Collector CFK-1
Casing Deep-drawn aluminium tray, natural,
sea-water resistant.
Dimensions (L x W x H) / (external edge) 2099 x 1099 x 110mm
Gross surface area 2.3 m²
Effective absorber area 2.0 m²
Weight (dry) 36 kg
Content 1.1 litres
Absorber: aluminium:copper
Style: Harp, highly selective coating
Cover 3.0 mm solar safety glass, hail-proof *
Thermal insulation Mineral wool
Connections Flat-packing with union nut G ¾"
Angle of inclination 15° to 90°
Opticalefciency* 76.7%
Heatlosscoefcienta1* 3.669 W/(m K²)
Heatlosscoefcienta2* 0.018 W/(m² K²)
Stagnation temperature *
(permiss. operating temp.)
196 °C
Irradiation angle correction factor IAM-50 * 95%
Thermal capacity C * 7.78 kJ/(m² K)
Max. operating pressure 10 bar
Heat transfer medium ANRO ready-mixed (45% by vol.)
Recommended throughput 90 l / (h x number of collectors)
Solar keymark register number 011-7S591F
* values to EN 12975
43062815_201508
Standards and regulations
Observe the locally applicable regulations, rules and guidelines during
assembly, installation and operation.
The following standards and regulations must also be observed:
Installation on roofs
Observe all current Health & Safety regulations
- EN 1991 (+NA) Effects on load-bearing structures
In particular Parts 1-3: Snow loads
Parts 1-4: Wind loads
Connection of solar heating systems
- EN 12976 Solar heating systems and their components
Prefabricated systems (this includes generally applicable
information regarding design and implementation)
- EN 12977 Solar heating systems and their components
Bespoke systems (this includes generally applicable
information regarding design and implementation)
- VDI 6002 Solar heating for domestic water
Electrical connection
- VDE 0100 Erection of power installations with rated voltages
below 1000 V
- VDE 0105 Cables and lines in buildings
- EN 62305 Parts 1-4 Protection against lightning
- VDE 0100 Part 540 Selection and erection of electrical equipment
- earthing arrangements, protective conductors,
equipotential bonding conductors
The collectors are tested in accordance with the following standards:
EN 12975-1 Quality control for solar heating collectors
EN 12975-2 Performance test for solar heating collectors
Standards and
regulations
5
3062815_201508
Safety instructions /
Protection against lightning
The following symbols are used in conjunction with these important instructions
concerning personal safety, as well as operational reliability.
"Safety instructions" are instructions that must be observed exactly,
to prevent injury and material losses,
e.g. The potentially very high temperatures inside the collector result
in a risk of scalding from the hot heat transfer medium.
"CAUTION" indicates technical instructions that you must observe
to prevent material losses and equipment malfunctions.
The connection of the collector array to an existing or new lightning protection
system and the installation of equipotential bonding may only be carried out
by an authorised contractor, under consideration of local conditions and in
compliance with the following technical rules:
EN 62305 Parts 1-4 Protection against lightning
VDE 0100 Part 540 Selection and erection of electrical equipment
- earthing arrangements, protective conductors,
equipotential bonding conductors
Alignment and shading
Ideally, the collectors should be oriented between south-east and south-west
(optimum: south). Please refer to our technical advisers in case of an alternative
orientation. Trees, neighbouring structures, chimneys, etc. should throw as
little shade over the collectors as possible. Observe the different position of
the sun (summer/winter).
The distance between the upper end of the solar collector and the lower edge
of the ridge should be at least 3 roof tiles, in order to reduce wind forces and
toallowsufcientspaceforinstallation.
Safety instructions
CAUTION
Protection against lightning
Notes on installation position
63062815_201508
Snow and wind loads
The load on the collector array is a combination of wind and snow loads which
are determined by the dimensions of the building, the roof shape and the
location. A precise calculation of the assumed loads must be carried out for
eachspecicinstallation,inlinewithEN1990(+NA)andEN1991(+NA)and
under consideration of regional regulations.
CFK-1 collectors may be used for pressure and suction loads of up to
2.4 kN/m². By using the snow load extension set, the maximum permissible
pressure load may be increased to 4 kN/m².
For safety reasons, the cross battens, rafters and roof tiles under the roof
hooks must not show signs of previous damage (cracking, drill holes, ageing),
else they will not withstand the loads to which they are subjected. If in doubt,
replace the battens and roof tiles in those sections.
We recommend the use of metal tiles below the roof hooks, particularly in
areas of high snowfall.
To avoid peaks in wind load we strongly recommend 1 metre minimum clearance
between the collector array and the roof edge (or ridge).
Additional loads caused by drifting snow or snow guards and by snow falling
from higher roofs should also be taken into consideration.
Inareaswheresnowloadsaresignicantwerecommendaroof-integrated
installation.
Snow and wind loads
7
3062815_201508
Information on system hydraulics
Air vent trap
(install at the
highest point)
Flow regulation valve
for multiple
collector arrays
Pipework examples
Recommendation:
Piping several collector arrays in accordance with Tichelmann
With alternating pipework a maximum of 10 CFK-1 collectors may be
connected in parallel.
- Donotusezinc-plated/galvanizedpipes,ttings,etc.
- Thermal insulation must be temperature-resistant to >175 °C, in external
areas it must also be UV and weather-resistant.
- Only use the gaskets supplied.
Pipes close to the collectors may reach temperatures of up to 200 °C when the
systemisonstandby.Bewareofpotentialrehazard.
- Pipes should be routed to the collector array with a rise. This will enable an
'emptying' of the collector in the event of stagnation. Do not create air locks.
Recommendation:
- Fit an air trap at the highest point.
- Wheremultiplecollectorsaretted,integrateowregulatingvalvesintothe
return to enable hydraulic balancing.
The solar lines must be laid and connected before the collector casing and
thermal insulation are tted, so that the entire line length and all collector
connection points can be checked for tightness.
CAUTION
CAUTION
Alternating pipework
(up to 10 collectors)
Alternating pipework
(up to 10 collectors)
83062815_201508
Information regarding the system hydraulics
All details are recommendations and may vary from system to system. The
expansion vessel sizes stated are valid for a static head of up to 10 metres only.
Information regarding
the system hydraulics
• Thecollectorscanbeoperatedwitha high specic owrate(so-called
High-Flow).Advantages:Thecollectoriswellcooled=highcollectorefciency
level,lowheatlossesattheowline.Disadvantages:Highpressuredrop
= powerful pump, large pipe cross-sections.
• The collectors can be operated with a low specic ow rate (so-called
Low-Flow). Here, the advantages and disadvantages are reversed compared
totheHigh-Flowoperation.Anadditionaladvantage,duetothehigherow
temperature,istheeffectiveoperationofastraticationcylinder.
Flow data: High-Flow (90 l/h x coll), ANRO 30 °C
1 coll.
3 coll.
5 coll.
7 coll.
10 collectors
Pressure drop, CFK-1 with ANRO 30 °C
Flow rate per collector (l/h)
Pressure drop, entire array (mbar)
Collector
number
Solar line
length (m)
Solar pipe Ø
(mm)
Pump
group DHW cylinder
Expansion
vessel 2.5
bar
(l)
2
2
20 12 x 1 10 SEM-2-300 18
60 15 x 1 10 SEM-2-300 18
3
3
30 15 x 1 10 SEM-2-400 25
60 18 x 1 10 SEM-2-400 25
4
4
30 18 x 1 10 SEM-1-500 35
60 22 x 1 10 SEM-1-500 35
5
5
30 18 x 1 10 SEM-1-750 35
60 22 x 1 10 SEM-1-750 50
6
6
30 18 x 1 10 SEM-1-750 50
60 22 x 1 10 SEM-1-750 50
7
7
20 18 x 1 10 SEM-1-1000 50
60 22 x 1 10 SEM-1-1000 50
8
8
30 22 x 1 10 SEM-1-1000 80
60 28 x 1,5 10 SEM-1-1000 80
9
9
30 22 x 1 10 SEM-1-1000 80
90 28 x 1,5 10 SEM-1-1000 80
10
10
25 22 x 1 10 SEM-1-1000 80
80 28 x 1,5 10 SEM-1-1000 80
9
3062815_201508
General preparations
- For handling and storage of the collector pile only use the packing strips
and pallets.
- Never move more than 16 collectors in a single pile and never store more than
24 collectors in a single pile.
- Never move collectors with the glass facing down.
- To prevent damage, never carry collectors by the collector connectors or
put them down on the connectors.
- Never place the collector back onto uneven surfaces.
- Store collectors only in dry places that are free of dust.
- We recommend the use of transport handles (available as accessories).
CAUTION
Transport and storage
The following materials and tools are required for an easy and safe collector
installation:
1 x hammer
1 x tape measure
1 x pencil / chalk
2 x screwdriver / spanner SW 13
1 x wood drill approx. 5 mm (only roof integration)
1 x angle grinder with stone cutting disc
2 x open-ended spanner SW 30
1 x adjustable pliers
1 x hole saw (where the roof is already planked in)
Roof outlets for the solar lines (e.g. ventilation tile; cut to size with
an angle grinder)
Protective conduits (sensor lead, pipework)
Anti-falling protection
Crosshead bit
Required tools
Installation The installation and commissioning must only be carried out by authorised
contractors. This contractor will be responsible for the correct installation and
the commissioning.
The collector connections, even those of dry collectors, can become very hot
during the installation. Wear protective gloves as there is a risk of injury from
burns.
The collector must not be pulled onto the roof exclusively by the rivet nuts!
Do not step underneath the collector during transport. (see picture)
In case of jerky movements the rivet nuts can tear off and the collector
can fall.
10 3062815_201508
General preparations
Layout example: 3 CFK-1 collectors, on end, alternating pipework (max. 10 collectors)
Flow connector
Return connector
(compulsory for roof integration)
Are all gaskets in place?
Plug opposite the connectors
Plug
Plug opposite the connectors
M8 x 30 grub screws at the
bottom of the collectors
Compensators
Sensor well
The following tasks should be carried out prior to the collectors being moved
onto the roof.
Please note: Fit compensators only to the short connectors.
• For single-sided pipework to the left (see example diagram) the short
connectors are on the right.
• For single-sided pipework to the right, rotate the collector through 180°.
The short connectors are now to the left.
• For alternating pipework, ensure that all short connectors are facing in the
same direction.
Prior to joining the connections, check whether the collector gaskets are inside
eachtting.
Whenttingtheconnectionpieces,compensatorsandplugs,alwayscounter
hold the union nut on the collector tightly. Apply a maximum torque of 20 Nm.
Removethesensorwellfromthecontrolunitcartonandinsertitintotheow
connector.
Respectively insert 2 M8 x 30 grub screws fully into the lower tray edge.
Preparations prior to installation
Compensator
Grub screws
M8 x 30
Flow connector
Collector gaskets
Sensor well
Return connector (compulsory for
roof integration)
Long
connector
Short
connector
Altri manuali per CFK-1
1
Indice
Altri manuali Wolf Pannello solare
