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auroTHERM plus VFK 9901

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					For the heating engineer

Supplementary manual

auroTHERM plus VFK 990/1

High performance flat solar collector panels

VFK 990/1

GB

Description and Technical Data

Notes
This manual gives additional information about the Vaillant auroTHERM plus VFK990/1 flat plate collector. It is designed to be read in conjunction with the following manuals:0020009580 0020009584 835247 auroTHERM VFK 900 : roof mounting of flat plate collectors auroTHERM VFK 900 : in-roof mounting of flat plate collectors auroTHERM VFK 900 : flat roof mounting of flat plate collectors Solar system and auroSTOR

0020009607 -

Equipment
The auroTHERM plus VFK 990/1 flat collector is a high performance flat plate collector with Sunarc® anti-reflex glass coating for the best possible transmission. The copper surface absorber has a high selective vacuum coating and the collector has a saltwater resistant aluminum frame. All roof fixings and accessories are are the same as for the Vaillant auroTHERM VFK 900 flat plate collector and the installation procedures are shown in the manuals listed above.

Fig 1 View of the auroTHERM plus VFK 990/1, two collectors

Appliance designation Surface area (gross, aperture/net) Height Width Depth Weight Absorber capacity Copper pipe connection, flat-face Insulation thickness Max. operating pressure Solar safety glass transmission t Absorber emission ε Absorber absorption α Solar sensor sleeve Qualification approval mark Shutdown temperature (according to prEN 12975-2, c < 1 m/s) Efficiency η0 Efficiency coefficient k1 Efficiency coefficient k2
Table 1 Technical data for auroTHERM plus VFK 990/1

Unit. m
2

auroTHERM VFK 990/1 2.24/2.02 1930 1160 110 43 1,27 G 1/2" 60 10 96 ± 2 5±2 95 ± 2 6 CE 0036 232 85.4 3.37
2 2

mm mm mm kg litres Ø mm mm bar % % % Ø mm °C % W/(m•K) W/(m •K )

0.0104



Installation Manual auroTHERM, VFK 990/1

Description and Technical Data

Temperature difference (collector/ambient) [K] VFK 990/1 1000 W/m2 Irradiance VFK 990/1 800 W/m2 Irradiance VFK 990/1 300 W/m2 Irradiance
Fig 2 Efficiency of the auroTHERM VFK 990/1 according to DIN 4757/4

VFK 900 1000 W/m2 Irradiance VFK 900 800 W/m2 Irradiance VFK 900 300 W/m2 Irradiance

Solar fluid at 30˚C 140 120 3x Pressure loss [mbar] 100 80 60 40 20 0 1x

2x

0

50

100 150 200 250 Volume flow [l/h]

300

Fig 3 Pressure loss auroTHERM VFK 990/1
Installation Manual auroTHERM, VFK 990/1



0020057885_00 GB 092007


				
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Description: auroTHERM plus VFK 9901