Regulations; Before Installation; General Information; Determining The Space Required - Bosch TSS Series Installation And Maintenance Instructions Manual

Regulations

3 Regulations
▶ Observe updated regulations or supplements. These regulations also
apply at the time of installation.
▶ Observe all standards and guidelines applicable to the installation
and operation of the system in your country and region.
Technical regulations applicable for the installation of collectors
• Rooftop installation:
– DIN EN 1991: Actions on structures
• Connection of thermal solar systems:
– EN 12976: Thermal solar systems and components
(factory-made systems)
– EN 12977: Thermal solar systems and components
(custom-built systems)
• Electrical connection:
– DIN EN 62305 Part 3 / VDE 0185-305-3: Protection against
lightning, physical damage to structures and life hazard
Technical rules for the installation of DHW cylinders
• DIN EN 12897: Water supply – specification for storage water
heaters (product standard)
• DIN EN 1717: Protection against pollution of potable water installations
• DIN EN 806: Technical rules for potable water installations
4

Before installation

4.1

General information

CAUTION:
Risk of burning from hot components!
The collector and installation materials can become very hot after being
exposed to solar radiation for prolonged periods of time.
▶ Wear personal protective equipment.
▶ Protect the collector and installation material from solar exposure.
We recommend that you engage the services of a roofing contractor, as
they are experienced in working on roofs and will be aware of the risk of
falling.
▶ Obtain information about on-site conditions and local regulations.
▶ Avoid potential shading.
▶ Align the collectors towards the south, where possible.
-17%
-3%
0%
0010015520-02
Fig. 10 Optimal alignment of the collectors and loss of solar yields in
case of deviations in % (location: Athens)
10
-20%
-5%
Height differentials in roofs
Where there are height differentials in the roof, snow loads must be
prevented from sliding down from a roof pitch of > 15°. The length of
the additional load through sliding snow loads results from the height
differential: l = 2 × h
s
▶ Avoid installing collectors within the ls area below height differentials
In case of installation below a height differential:
▶ Fit a snow guard to the higher roof area.
Fig. 11 Collector arrangement with height differentials
[1] Additional loads through sliding snow
[2] Standard snow load
4.2

Determining the space required

WARNING:
Risk to life from incorrectly installed collectors!
Wind loads are especially high at the edges of the roof.
▶ Maintain the minimum clearance to the edge of the roof and roof
structures.
The clearances to be maintained to the edge of the roof and to the roof
structures can be found in DIN EN 1991-1-4 and the Code of Practice 61
of the BDH (Federal Association of the German Heating Industry).
<
d ≤
3 x h d 3 x h
1
1
a = 0,15 x d a = 0,45 x
1
≤ ≤
a 1 m a 0,04 x d
≤
a 1 m
l
2
b
d
2
d d
<
1 2
Fig. 12 Observe the minimum clearances (a, b)
0010014998-01
h b = 0,5 x
2 2
l + l
1 2
b = h
1
A
l
h
1
A
d
1
0010014936-01
TSS – 6720887696 (2018/05)