Vaillant auroTHERM VTK 570/2 User manual

For the expert technician
Installation manual
auroTHERM
On-roof/flat roof installation VTK 570/2
VTK 1140/2
GB

2
Contents
Contents
1 Notes on the documentation......................... 3
1.1 Other applicable documents ................................3
1.2 Storage of the documents....................................3
1.3 Symbols used ...........................................................3
1.4 Applicability of the manual...................................3
2 Intended use .................................................... 3
2.1 Combination with other components ................3
2.2 Operational conditions ..........................................3
3 Safety instructions ........................................4
3.1 Technical Guidance.................................................4
3.2 Related documents.................................................4
3.3 Regulations for the prevention of accidents ...4
3.4 Lightning protection...............................................5
3.5 Frost protection.......................................................5
4 Before installation .......................................... 5
4.1 Safety instructions3...............................................5
4.2 Scope of delivery ....................................................6
4.2.1 On-roof mounting ...................................................6
4.2.2 Flat-roof mounting..................................................7
4.3 Assembling the collector array ...........................8
4.3.1 On-roof mounting ...................................................8
4.3.1.1 Collector arrangement, 1-row ..............................8
4.3.1.2 Collector arrangement, 2-row ........................... 10
4.3.1.3 Collector arrangement, 3-row .............................11
4.3.2 Flat-roof mounting.................................................13
4.4 Interconnection scheme...................................... 14
4.5 Preparing the hydraulic connection................. 16
4.5.1 On-roof mounting ................................................. 16
4.5.2 Flat-roof mounting................................................ 16
4.6 Required tools........................................................ 16
5 On-roof mounting...........................................16
5.1 Fitting the brackets ...............................................17
5.2.1 Bracket Type P (pantile) ..................................... 19
Fixing to the roof batten ................................................ 20
5.2.2 Bracket Type S (for high profile pantiles) .......21
5.2.3 Bracket Type S (Low profile for slate/ flat tiles)
21
5.2.3 Hanger bolt fixing kit ...........................................22
5.3 Fitting the collectors ............................................23
6 Flat-roof mounting ...................................... 28
6.2 Weighting and arrangement of the frames... 28
6.3 Fitting the collectors............................................32
7 Final operations ............................................37
8 Recycling and disposal................................ 38
9 Vaillant Customer Service and warranty . 38
9.1 Vaillant warranty.................................................. 38
9.2 Vaillant service ..................................................... 38
10 Technical data...............................................39

1 Notes on the documentation
The instructions below are intended to help you
throughout the entire documentation.
1.1 Other applicable documents
When assembling the tube collectors, pay attention to
all the installation instructions for the components and
assemblies within the solar installation. These instruc-
tions are included with the individual components of the
system and the additional components.We accept no li-
ability for any damage caused by failure to observe
these instructions.
1.2 Storage of the documents
Please pass on this installation manual and all other ap-
plicable documents and auxiliary equipment to the plant
operator, whose responsibility it is to ensure the manu-
als and auxiliary equipment are available whenever re-
quired.
1.3 Symbols used
Please observe the safety instructions in this installation
manual for the installation of the collector!
dDanger!
Immediate risk of serious injury or death!
eDanger!
Risk of death from electric shock!
HDanger!
Danger of burning and scalding!
aCaution!
Potentially dangerous situations for the prod-
uct and the environment!
hNote
Useful information and instructions.
• Symbol indicating the required action
1.4 Applicability of the manual
This installation manual applies exclusively to tube col-
lectors with the following part numbers:
Collector type Part number
VTK 570/2 0010002227
VTK 1140/2 0010002228
Table 1.1 Collector types and article numbers
Please see the identification plate on the upper edge of
the collector for the part number of the tube collector.
2 Intended use
Vaillant auroTHERM tube collectors are built according
to the state of the art and recognised safety rules and
regulations.
Nevertheless, improper use may cause danger to life
and limb of the user or third parties and could impair
the operation of the unit and other objects.
The unit is not intended for use by persons (including
children) with reduced physical, sensory or mental capa-
bilities, or lack of experience and/or knowledge,
unless they have been given supervision or instruction
concerning use of the unit by a person responsible for
their safety.
Children must be watched to ensure that they do not
play with the unit.
Vaillant auroTHERM tube collectors are used for solar
assisted hot water generation and where specially de-
signed can provide additional heating such as pool heat-
ing.
The collectors may only be operated with Vaillant ready-
mixed solar fluid. Passing heating water or hot water di-
rectly through the collectors is not permitted.
Any other use or use exceeding the above-mentioned
applications shall be considered as improper use. The
manufacturer/supplier shall not be responsible for any
damages resulting from such improper use. The user
alone bears the risk.
Intended use includes observance of the operating and
installation manuals and all other applicable documents,
as well as adherence to the maintenance and inspection
conditions.
aCaution!
Any improper use is forbidden!
2.1 Combination with other components
Vaillant tube collectors should be combined only with
Vaillant components (fixing, connections) and system
components.
The use of other components or system components
shall be considered as improper use. We accept no liabil-
ity.
2.2 Operational conditions
aCaution!
The roof may collapse!
Mount the tube collectors only on roofs with an
adequate load-bearing capacity.
If necessary, call a technician.
3Installation manual auroTHERM 0020077994_00
Notes on the documentation 1
Intended use 2
GB

On-roof mounting:
The tube collectors can be mounted at an angle of
15° – 75°.
An installation angle of less than 15° is not permissible.
Flat roof installation:
The tube collectors can be installed on flat roof frames
in the as-delivered condition with an angle of 30°, 45°
or 60°.
An installation angle of less than 15° is not permissible.
3 Safety instructions
The following safety instructions, technical rules and ac-
cident prevention regulations must be observed when
installing the flat collectors.
dDanger!
Risk of death from falls and falling objects!
Observe the national regulations for working at
heights.
HDanger!
Danger of burning and scalding!
In case of solar irradiation inside the units, col-
lectors can reach 300 °C. Remove the sun pro-
tection film installed at the factory only after
the solar energy system has been started up.
HDanger!
Danger of burning and scalding!
In case of solar irradiation inside the units, col-
lectors can reach 300 °C.
Do not perform maintenance work under direct
sunlight.
aCaution!
Collector damage!
A qualified engineer is required to install tube
collectors in accordance with this installation
manual.
The installation should thus be performed only
if a qualified engineer is available.
3.1 Technical Guidance
The system must be installed in accordance with all rel-
evant 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.
3.2 Related documents
Designers and installers should refer to current informa-
tion and standards. A useful reference would be the en-
ergy saving trust document CE 131 (this is downloadable
from their web site at www.est.org.uk/housingbuildings)
which lists relevant standards and other documents that
you might refer to. This includes but is not limited to the
following;
Solar Standards
BS 7431, BS 6785: 1986, BS EN 12975 / 6 (Pt1-2), prEN
12977 (1-2-3) BS EN ISO 9488
The installation of the solar system must be in accord-
ance with the relevant requirements of Health and Safe-
ty Document No. 635 (The Electricity at Work Regula-
tions 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 Reg-
ulations (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.
- 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 dia-
phragm 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.
3.3 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 man-
ner, 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 re-
quirements that can reasonably be foreseen to be
Installation manual auroTHERM 0020077994_004
2 Intended use
3 Safety instructions

associated with the work. All scaffolding in the UK, other
than prefabricated (zip-up) scaffold towers, must be de-
signed and constructed by a vetted contractor, and
have suitable kick boards, hand rails and where appro-
priate 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 protec-
tive equipment as necessary. This would include equip-
ment such as fall protection systems, safety gloves,
goggles, dust masks as well as any specialised equip-
ment 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 Build-
ing control or planning requirements and be confirmed
where necessary by notification to building control or
the appropriate competence based notification body.
3.4 Lightning protection
aCaution!
Damage from lightning!
If the installation height is more than 20 m or
if the collectors are projected above the roof
ridge, electro-conductive components must be
connected to a lightning protection device!
3.5 Frost protection
aCaution!
Damage due to frost!
Never fill or flush the collector with water. Only
fill and flush the collector with Vaillant ready-
mixed solar fluid.
Check the solar fluid regularly with an anti-
freeze tester.
4 Before installation
4.1 Safety instructions3
Please note the following instructions before and during
installation:
dDanger!
Risk of death from falls and falling objects!
Observe the national regulations for working at
heights.
Wear the Vaillant safety belt (article number
302066).
HDanger!
Danger of burning and scalding!
In case of solar irradiation inside the units, col-
lectors can reach 300 °C. Remove the sun pro-
tection film installed at the factory only after
the solar energy system has been started up.
aCaution!
Collectors may be damaged by incorrect stor-
age!
Always store the collectors in a dry place and
protected from the elements.
Caution!
System error function due to air bubbles!
To fill the system, use the fill trolley (article
number 0020042548) to avoid air bubbles.
Use the manual air vent installed on the collec-
tor field.
Alternatively, install the Vaillant Solar auto-
matic air vent (article number 302019) in the
highest point of the system or the automatic
de-aerator (article number 302418) in the solar
circuit.
Observe the relevant installation and operating
manual.
5Installation manual auroTHERM 0020077994_00
Safety instructions 3
Before installation 4
GB

4.2 Scope of delivery
• Check the mounting kit for completeness based on the
illustrations and bills of materials.
4.2.1 On-roof mounting
1
3
2
4
8
9
10
5
7
6
12
11
Fig. 4.1 On-roof mounting kit
Pos. Description Quantity Article number (kit)
1 Rail kit VTK 1140/2 2 0020076781
2 Rail kit VTK 570/2 2 0020076780
3 Tube collector VTK 570/2 1 0010002227
4 Tube collector VTK1140/2 1 0010002228
5
Connecting kit VTK (basic module)
- Compression fitting 15 mm x 3/4'' external thread DN16
- Insulation EPDM 13 x 28, 60 mm, split
1 0020076785
6
Connecting kit VTK (expansion module)
- Rail joining pieces
- Double nipple 15 x 15 mm
- Insulation Armeflex HT, 25 x 20 mm, 45lg
- Cover clip
1 0020076779
7 Valve, 2-way VTK for parallel interconnection 1 0020076784
8 Bracket type S 4 0020067275 (for mounting side-by-side)
0020067276 (for mounting on top of one another)
9 Bracket type S flat 4 0020080145 (for mounting side-by-side)
0020080147 (for mounting on top of one another)
10 Bracket type P (for pantile) 4 0020067273 (for mounting side-by-side)
0020067274 (for mounting on top of one another)
11 Long base (accessory, not available in every country) 4 0020080177
12 Stair bolt mounting kit 4 0020067277
Table 4.1 On-roof mounting bill of materials
Installation manual auroTHERM 0020077994_006
4 Before installation

7Installation manual auroTHERM 0020077994_00
4.2.2 Flat-roof mounting
1
2
3
6
4
5
7
8
9
Fig. 4.2 Flat roof mounting kit
Pos. Description Quantity Article number (kit)
1 Rail kit VTK 1140/2 2 0020076781
2 Rail kit VTK 570/2 2 0020076780
3 Open air installation, VTK 1 0020076778
4 Gravel tray kit 2
3
0020059904 (2 pcs.)
0020059905 (3 pcs.)
5 Tube collector VTK 570/2 1 0010002227
6 Tube collector VTK1140/2 1 0010002228
7 Valve, 2-way VTK for parallel interconnection 1 0020076784
8 Connecting kit VTK (basic module) 1 0020076785
9 Connecting kit VTK (expansion module) 1 0020076779
Table 4.2 Flat roof installation bill of materials
Before installation 4
GB

4.3 Assembling the collector array
The following tables list the required components ac-
cording to the type of installation.
4.3.1 On-roof mounting
When mounted on the roof, Vaillant tube collectors can
be arranged above one another in up to 3 rows.
4.3.1.1 Collector arrangement, 1-row
Fig. 4.3 Installation kit for single row on-roof mounting
(here: VTK 570/2)
Number of collectors 1 2 3 4 5 6 7 8 9 10 11 12 13 14
VTK 570/2
Connecting kit VTK (basic module)
Part No. 0020076785
Required quantity
11)
Connecting kit VTK (expansion module)
Part No. 0020076779 - 1 2 3 4 5 6 7 8 9 10 11 12 13
Bracket kit Type P
(pantile)
Part No. 0020067273
12) 22) 32) 42) 52) 62) 72) 82) 92) 102) 112) 122) 132) 142)
Bracket kit Type S
(shingle)
Part No. 0020067275
Bracket kit Type S flat
Part No. 0020080145
Bracket kit (hanger
bolt)
Part No. 0020067277
Rail kit (2), VTK 570/2
Part No. 0020076780 1234567891011121314
1) 1 each per row
2) applies up to 700 m above sea level
Table 4.3 Components for single row on-roof mounting
Installation manual auroTHERM 0020077994_008
4 Before installation

Number of collectors 1234567
VTK 1140/2
Connecting kit VTK (basic module)
Part No. 0020076785
Required quantity
11)
Connecting kit VTK (expansion module)
Part No. 0020076779 -123456
Bracket kit Type P (pantile)
Part No. 0020067273
12) 22) 32) 42) 52) 62) 72)
Bracket kit Type S
Part No. 0020067275
Bracket kit Type S flat
Part No. 0020080145
Bracket kit (hanger bolt)
Part No. 0020067277
Rail kit (2), VTK 1140/2
Part No. 0020076781 1234567
VTK 1140/2 + VTK 570/2
Number of collectors VTK 1140/2 123456
Number of collectors VTK 570/2 111111
Connecting kit VTK (basic module)
Part No. 0020076785
Required quantity
11)
Connecting kit VTK (expansion module)
Part No. 0020076779 123456
Bracket kit Type P
(pantile)
Part No. 0020067273
22) 32) 42) 52) 62) 72)
Bracket kit Type S
Part No. 0020067275
Bracket kit Type S flat
Part No. 0020080145
Bracket kit (hanger bolt)
Part No. 0020067277
Rail kit (2), VTK 1140/2
Part No. 0020076781 123456
Rail kit (2), VTK 570/2
Part No. 0020076780 1
1) 1 each per row
2) applies up to 700 m above sea level
Table 4.3 Components for single row on-roof mounting (contin-
ued)
9Installation manual auroTHERM 0020077994_00
Before installation 4
GB

4.3.1.2 Collector arrangement, 2-row
A
B
A
Fig. 4.4 Installation kit for 2-row on-roof mounting
(here: VTK 570/2)
Number of collectors per row 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Number of rows 2
VTK 570/2
Connecting kit VTK (basic module)
Part No. 0020076785
Required quantity
21)
Connecting kit VTK (expansion module)
Part No. 0020076779 -2468101214161820222426
Bracket kit Type P
(pantile)
Part No. 0020067273
a12) 22) 32) 42) 52) 62) 72) 82) 92) 102) 112) 122) 132) 142)
Bracket kit Type S
Part No. 0020067275
Bracket kit Type S flat
Part No. 0020080145
Bracket kit Type P
(pantile)
Part No. 0020067274 B12) 22) 32) 42) 52) 62) 72) 82) 92) 102) 112) 122) 132) 142)
Bracket kit Type S
Part No. 0020067276
Bracket kit Type S flat
Part No. 0020080147
Rail kit (2),
VTK 570/2
Part No. 0020076780
2 4 6 8 10 12 14 16 18 20 22 24 26 28
1) when the connection between the rows is also flat-sealing
2) applies up to 700 m above sea level
Table 4.4 Components for 2-row on-roof mounting
Installation manual auroTHERM 0020077994_0010
4 Before installation

11Installation manual auroTHERM 0020077994_00
Number of collectors per row 1 2 3 4 5 6 7
Number of rows 2
VTK 1140/2
Connecting kit VTK (basic module)
Part No. 0020076785
Required quantity
21)
Connecting kit VTK (expansion module)
Part No. 0020076779 -24681012
Bracket kit Type P (pantile)
Part No. 0020067273
a12) 22) 32) 42) 52) 62) 72)
Bracket kit Type S
Part No. 0020067275
Bracket kit Type S flat
Part No. 0020080145
Bracket kit, Type P
(pantile) Part No. 0020067274
B12) 22) 32) 42) 52) 62) 72)
Bracket kit Type S
Part No. 0020067276
Bracket kit Type S flat
Part No. 0020080147
Rail kit (2), VTK 1140/2, Part No. 0020076781 2 4 6 8 10 12 14
1) when the connection between the rows is also flat-sealing
2) applies up to 700 m above sea level
Table 4.4 Components for 2-row on-roof mounting (continued)
4.3.1.3 Collector arrangement, 3-row
A
B
B
A
Fig. 4.5 Installation kit for 3-row on-roof mounting
(here: VTK 570/2)
Before installation 4
GB

Number of collectors per row 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Number of rows 3
VTK 570/2
Connecting kit VTK (basic module)
Part No. 0020076785
Required quantity
31)
Connecting kit VTK (expansion module)
Part No. 0020076779 - 3 6 9 12 15 18 21 24 27 30 33 36 39
Bracket kit Type P
(pantile)
Part No. 0020067273 a12) 22) 32) 42) 52) 62) 72) 82) 92) 102) 112) 122) 132) 142)
Bracket kit Type S
Part No. 0020067275
Bracket kit Type S flat
Part No. 0020080145
Bracket kit Type P
(pantile)
Part No. 0020067274 B22) 42) 62) 82) 102) 122) 142) 162) 182) 202) 222) 242) 262) 282)
Bracket kit Type S
Part No. 0020067276
Bracket kit Type S flat
Part No. 0020080147
Rail kit (2), VTK 570/2
Part No. 0020076780 3691215182124273033363942
Number of collectors per row 1 2 3 4 5 6 7
Number of rows 3
VTK 1140/2
Connecting kit VTK (basic module)
Part No. 0020076785
Required quantity
31)
Connecting kit VTK (expansion module)
Part No. 0020076779 - 3 6 9 12 15 18
Bracket kit Type P
(pantile)
Part No. 0020067273 a12) 22) 32) 42) 52) 62) 72)
Bracket kit Type S
Part No. 0020067275
Bracket kit Type S flat
Part No. 0020080145
Bracket kit, Type P
(pantile)
Part No. 0020067274 B22) 42) 62) 82) 102) 122) 142)
Bracket kit Type S
Part No. 0020067276
Bracket kit Type S flat
Part No. 0020080147
Rail kit (2), VTK 1140/2
Part No. 0020076781 36912151821
1) when the connections between the rows are made by flat seal connection.
2) applies up to 700 m above sea level
Table 4.5 Components for 3-row on-roof mounting
Installation manual auroTHERM 0020077994_0012
4 Before installation

13Installation manual auroTHERM 0020077994_00
4.3.2 Flat-roof mounting
Number of collectors 1 2 3 4 5 6 7 8 9 10 11 12 13 14
VTK 570/2
Connecting kit VTK (basic module)
Part No. 0020076785
Required quantity
11)
Connecting kit VTK (expansion module)
Part No. 0020076779 - 1 2 3 4 5 6 7 8 9 10 11 12 13
Mounting kit for open-air installation on a
flat roof
Part No. 0020076778
2 3 4 5 6 7 8 9 10 11 12 13 14 15
Gravel trays required 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Gravel tray kit (2 pcs.)
Part No. 0020059904 2-12- 12-12- 12-
Gravel tray kit (3 pcs.)
Part No. 0020059905 -22244466688810
Rail kit (2), VTK 570/2
Part No. 0020076780 1234567891011121314
VTK 1140/2
Connecting kit VTK (basic module)
Part No. 0020076785 11)
Connecting kit VTK (expansion module)
Part No. 0020076779 -123456
Mounting kit for open-air installation on a
flat roof
Part No. 0020076778
2345678
Gravel trays required 8 12 16 20 24 28 32
Gravel tray (2 pcs.)
Part No. 0020059904 1-21-21
Gravel tray (3 pcs.)
Part No. 0020059905 24468810
Rail kit (2) aluminium, VTK 1140/2
Part No. 0020076781 1234567
VTK 1140/2 + VTK 570/2
Number of collectors VTK 1140/2 - 1 2 3 4 5 6
Number of collectors VTK 570/2 - 111111
Connecting kit VTK (basic module)
Part No. 0020076785
Required quantity
-1
1)
Connecting kit VTK (expansion module)
Part No. 0020076779 -123456
Mounting kit for open-air installation on a
flat roof Part No. 0020076778 -345678
Gravel trays required - 8 12 16 20 24 28
Gravel tray kit (2 pcs.)
Part No. 0020059904 -1-21-2
Gravel tray kit (3 pcs.)
Part No. 0020059905 - 244688
Rail kit (2), VTK 1140/2
Part No. 0020076781 -123456
Rail kit (2), VTK 570/2
Part No. 0020076780 -1
1) 1 each per collector array
Table 4.6 Flat roof installation components
Before installation 4
GB

Installation manual auroTHERM 0020077994_0014
4.4 Interconnection scheme
hNote
Observe the planning information when dimen-
sioning the array volume flow.
Furthermore, observe the following rules:
max. 14
Fig. 4.6 Series connection VTK 570/2
• Connect a maximum of 14x VTK 570/2
(corresponding to an aperture area of 14
m2) in series.
max. 7
Fig. 4.7 Series connection VTK 1140/2
• Connect a maximum of 7x VTK 1140/2
(corresponding to an aperture area of 14
m2) in series.
Fig. 4.8 Parallel connection (here VTK 570/2)
• For aperture areas greater than 14 m2, you
must configure several collector arrays in
parallel and connect them hydraulically in
parallel.
• Always connect as many collectors as pos-
sible in series.
hNote
You should only connect the collec-
tor arrays in parallel if the aperture
area is greater than 7 m2(correspon-
ding to 7x VTK 570/2 or 3x 1140/2
+ 1x VTK 570/2).
4 Before installation

15Installation manual auroTHERM 0020077994_00
Fig. 4.9 Sizes of the individual arrays
When collector arrays are connected in par-
allel, each individual array must have the
same aperture area.
Fig. 4.10 Stop valve in the collector supply line
aCaution!
Danger of air locks!
If 3 or more collector arrays are con-
nected in parallel, a stop valve must
be fitted in the collector supply line
(hot side) of each individual array.
These will be used for venting the in-
dividual arrays during commissio-
ning. Only use the Vaillant stop
valve, Part No. 0020076784
aCaution!
Danger of damage to the material as
a result of incorrect assembly!
With the valve closed or wrong valve
positioning, damaging of the collector
due to excessive pressure will be
possible. Never mount the stop valve
in the collector return. The stop
valve must be open during system
operation.
Before installation 4
GB

Installation manual auroTHERM 0020077994_0016
4.5 Preparing the hydraulic connection
4.5.1 On-roof mounting
Fig 4.11 Passing the pipe through the sarking membrane
If there is a sarking membrane, proceed as follows:
• Make a v-shaped cut in the sarking membrane.
• Fold the upper, wider flap on to the roof batten above,
and the lower, narrower flap on to the roof batten
below.
• Fix the sarking membrane tight to the roof batten.
This ensures that the dampness flows away to the
side.
• With board-clad roofs, cut out a hole with a padsaw.
• Work the roofing felt as described for the sarking
membrane.
4.5.2 Flat-roof mounting
aCaution!
The roof skin can break and cause leaks!
When installing the roof sealing surfaces, make
sure the roof skin is adequately protected.
• Place large protection mats under the system.
• If the frame is screwed directly, check the sealing of
the building shell.
4.6 Required tools
• Have the following tools ready for assembling the
tube collectors.
Fig. 4.12 Assembly tools: spirit level, cordless screwdriver,
Torx bit (TX30, supplied), allen key 5mm,
socket/combination wrench (13 mm), hammer,
measuring tape / folding rule
5 On-roof mounting
With on-roof mounting, the tube collectors are fastened
to horizontal mounting rails quickly and reliably with at-
tachment clips. To ensure a good adaptation to the dif-
ferent roofings, four different brackets are available:
- Type P for standard concrete tiles (e.g. pantile),
- Type S for extremely high protruding tiles (e.g. Medi-
terranean clay tiles)
- Type S flat (low profile) for flat tiles or slate roofs.
- Stair bolt mounting kit for universal fixing (e.g. corru-
gated slabs, sheet with trapezoidal corrugations, shin-
gles).
aCaution!
Risk of corrosion!
On roofs made of metals more noble than alu-
minium (e.g. on copper roofs) galvanic corrosion
can occur at the anchor points, whereby the at-
tachment of the collectors is no longer guaran-
teed. Ensure that the metals are separated by
suitable underlays.
When mounted on the roof, the Vaillant tube collectors
in the collector array can be arranged side-by-side or
above each other.
In general, the installation steps and instructions de-
scribed in this manual are applicable to all collector
arrangements.
Any different installation steps are clearly pointed out:
For collectors arranged side-by-side
For collectors arranged above each other
When arranging the collectors, take note in each case of
the possible interconnection schemes in Section 4.4.
4 Before installation
5 On-roof mounting

17Installation manual auroTHERM 0020077994_00
5.1 Fitting the brackets
For collectors arranged side-by-side
• Mount the anchors for the mounting rails at the fol-
lowing distances:
hNote
During final fixing the pre-assembly dimension
A is reduced by approx. 20 - 25 mm. Take care
that there is adequate clearance on the an-
chors, therefore.
Number of
collectors
A* B C D
VTK 570/2
1
1663 / 1638
50 - 100
507 - 607
707
2 1414
3 2121
4 2828
5 3535
6 4242
7 4949
8 5656
9 6363
10 7070
11 7777
12 8484
13 9191
14 9898
VTK 1140/2
1
100 - 200
997 - 1197
1397
2 2794
3 4191
4 5588
5 6985
6 8382
7 9779
* Pre-assembly dimension / Finished dimension
During final fixing of the collectors, the pre-assembly dimension
is reduced by approx. 20 - 25 mm.
Table 5.1 Spacings when arranging collectors side-by-side
[in mm]
BBB
C
B
A
D
A
A
Fig. 5.1 Spacings when arranging collectors side-by-side
On-roof mounting 5
GB

Installation manual auroTHERM 0020077994_0018
For collectors arranged on top of each other
• Mount the anchors for the mounting rails at the fol-
lowing distances:
hNote
During final fixing the pre-assembly dimension
A is reduced by approx. 20 - 25 mm. Take care
that there is adequate clearance on the an-
chors, therefore.
Number of
collectors
A* B C D E
2 rows
E
3 rows
VTK 570/2
1
1663 / 1638
50 - 100
507 - 607
707
3322 5006
21414
32121
42828
53535
64242
74949
85656
96363
10 7070
11 7777
12 8484
13 9191
14 9898
VTK 1140/2
1
1663 / 1638
100 - 200
997 - 1197
1397
3322 5006
22794
34191
45588
56985
68382
79779
* Pre-assembly dimension / Finished dimension
During final fixing of the collectors, the pre-assembly dimension
is reduced by approx. 20 - 25 mm.
Table 5.2 Spacings when arranging collectors on top of each
other [in mm]
A
E
BBB
C
B
D
A
A
E
E
Fig. 5.2 Spacings when arranging collectors on top of each
other
5 On-roof mounting

19Installation manual auroTHERM 0020077994_00
5.2.1 Bracket Type P (pantile)
A
B
1
2
1
2
5 mm
3
Fig. 5.3 Bracket type P
Key
1 Lower bracket
2 Upper bracket
3 Central bracket
The bracket type P can be fixed to the rafters
(Pos. A) or by use of the long rear plate set
0020080177 can be offset to suit tile profile.
Fixing to rafters
5
3
4
6
1
2
A
B
Fig. 5.4 Fixing to rafters
1. Uncover the rafters where needed. For distances
please see Tab. 5.1 and 5.2.
2.Position the bracket. Take note of the correct posi-
tions of the upper, central and lower brackets
(see Fig. 5.3).
3.Loosen the upper bolt with the socket/combination
wrench (13 mm) until the height of the bracket can be
adjusted.
4.Position the bracket at the same height of the pan-
tiles, so that the upper part of the anchor is on the
roofing, and tighten the bolt with the socket/combina-
tion wrench (13 mm).
5.Screw the bracket to the rafters with the 3 supplied
bolts.
6.Slide the pantiles back to the original position.
If necessary, adapt the water gutter on the lower (A)
or upper side (B) of the pantile with a hammer, or
suitable disk cutter, until the pantiles are tight.
dDanger!
Risk of injury!
Always wear suitable eye protection and all
necessary personal protective equipment and
ensure the area of work is safe with regard to
other persons.
On-roof mounting 5
GB

Installation manual auroTHERM 0020077994_0020
hNote
With some roof covering it may be necessary to
offset the roof bracket to the left or right of
the rafter, to do this use the accessory:
Part No. 0020080177 (not available in every
country). Observe the appropriate installation
manual.
Fixing to the roof batten
aCaution!
Only acceptable if roof and battens have been
inspected by a competent roofing contractor /
designer.
Before installation on the roof batten, check
the load capacity of the roof batten!
If necessary, replace the roof batten or provide
additional timber bearers.
Also ensure battens are fixed securely (screw
to rafter each side of brackets).
1
3
2
5
6
4
Fig. 5.5 Fixing to the roof batten
1. Slide upward one or two pantiles above the roof bat-
ten.
For distances please see Tab. 5.1 and 5.2.
2.Loosen the upper bolt with the socket/combination
wrench (13 mm) until the height of the bracket can be
adjusted.
3.Hook the bracket to the roof batten. Take note of the
correct positions of the upper, central and lower
brackets when doing this (see Fig. 5.3).
4.Position the bracket at the same height of the pan-
tiles. The upper part is on the roofing, the lower part
is pressed tight against the roof batten from the bot-
tom.
Take care anchor is tightly fixed and pre-tensioned on
the roof batten (toothing engaged).
5.Tighten the bolt with the socket/combination wrench
(13 mm).
6.Slide the pantiles back to the original position. If nec-
essary, adapt the water gutter on the lower side of
the pantile with a hammer, until the pantiles are tight
5 On-roof mounting