9 Customer service
38
Installation manual auroTHERM classic 0020159946_01
▶
Dispose of the old unit and any accessories properly.
Disposing of solar fluid
The solar fluid must not be disposed of with normal house-
hold waste.
▶
Dispose of the solar fluid in compliance with local regula-
tions through an appropriate disposal company.
▶
Dispose of packaging that cannot be cleaned in the same
way as solar fluid.
Uncontaminated packaging can be reused.
9
Customer service
10 Technical data
10.1
Technical data table
Unit
VFK 135/2 VD
VFK 140/2 VD
Absorber type
−
Vertical serpentine
Dimensions
mm
2033 x 1233 x 80
Weight
kg
37
37.5
Liquid volume
l
1.46
Max. permissible
operating pressure
bar
10
Shutdown temper-
ature
°C
189
176
Gross area
m
2
2.51
Aperture surface
area
m
2
2.35
Absorber surface
area
m
2
2.33
Absorber
mm
Aluminium
(vacuum-
coated)
0.4 x 1978 x
1178
Aluminium
(vacuum-
coated)
0.4 x 1978 x
1178
Coating
−
High selective (blue)
α
= 95%
ε
= 5%
Glass covering
mm
3.2
Glass type
−
Solar safety
glass
(prismatic
structure)
Clear glass
Transmission
%
τ
= 91
τ
= 96
Back wall insula-
tion
mm
40
W/m
2
K
λ
= 0.035
kg/m
3
ρ
= 55
Edge insulation
−
None
Efficiency
η
O
%
78,5
85.5
Heat loss factor
(k
1
)
W/m
2
K
3,643
2.41
Heat loss factor
(k
2
)
W/m
2
K
2
0.016
0.039
Unit
VFK 135/2 VD
VFK 140/2 VD
Max. wind load
kN/m
2
1.6
Max. standard
snow load
kN/m
2
5.0
On-roof installation
angle
°
15 - 75
Flat roof installa-
tion angle
°
30, 45, 60
