Technical data


GasSolarUnit
GSU 320-e GSU 520 S-e GSU 530 S-e GSU 535-e
Total storage capacity Litres 300 500 500 500
Empty weight kg 86 124 128 128
Total filled weight kg 386 624 628 628
Length cm 59,5 79 79 79
Width cm 61,5 79 79 79
Height cm 189 181 181 181
Max. permissible storage tank water temperature °C 85 85 85 85
Stand-by heating power kWh/24 h 1,7 1,8 1,8 1,8
Domestic hot water
Domestic hot water exchanger volume Litres 19 24,5 24,5 24,5
Maximum operating pressure bar 6 6 6 6
Domestic hot water heat exchanger material stainless steel
Domestic hot water heat exchanger surface bar 4,1 5,5 5,5 5,5
Average specific heat capacity W/K 1820 2470 2470 2470
Storage tank primary heat exchanger (stainless steel)
Water capacity heat exchanger Litres 9,1
10,4
10,4 19,5
Surface area primary heat exchanger 2,1 2,3 2,3 4,3
Average specific heat capacity W/K 910 1040 1040 1950
Solar heating support (stainless steel)
Heat exchanger surface area - 0,43 0,43 -
Average specific heat capacity W/K 200 200 -
Thermal output data
Output characteristi NL in accordance with DIN 47081) 2,0 2,1 2,2 4,4
D value (specific water flow) conforms to EN 6252) l/min. 23 25 27 39
Continuous output in accordance with DIN 4708 Qn kW 20 20 30 35
Max. draw-off rate for a period of 10 min at (TKW=10 °C/TSP=60 °C/TWW= 40 °C) l/min. 20 21 22 31
Hot water quantity without reheating at 15 l/min draw-off rate (TKW=10 °C/TSP=60 °C/TWW= 40 °C) Litres 200 220 220 412
Hot water quantity with reheating at nominal output
and 15 l/min draw-off rate (TKW=10 °C/TSP=60 °C/TWW= 40 °C)
Litres 360 500 1180 unbegrenzt
Short-term water quantity in 10 min Litres 200 210 215 310
Heat generator characteristic data
Nominal output KW

3,7-20,0

3,7-20,0 6,5-30,0 8,0-35,0
Rated thermal load kW 3,7-21,0 3,7-21,0 6,6-30,9 8,5-36,1
Device type B23 / C13x / C33x / C43x / C53x / C63x / C83x
Product ID number CE-0085 BM 0065
NOX- class 5 5 5 5
Electrical data V/Hz 230/850 230/50 230/50 230/50
Electrical power consumption (incl. heating circulation pump) W max. 99 max. 99 max. 105 max. 118
Protection rating IP 20 20 20 20
Maximum permissible operating pressure bar 3,0 3,0 3,0 3,0
Maximum permissible operating temperature °C 85 85 85 85
Maximum boiler efficiency % 110 110 110 110
Flue gas / air infeed connection diameter mm 80/125 80/125 80/125 80/125
Pipe connections
Cold and hot water Inch 1" AG 1" AG 1" AG 1" AG
Heating inflow and return flow Inch 1" IG 1" IG 1" IG 1" IG
Control Accessories Accessories Accessories Accessories
1) At nominal output, 80 °C feed temperature, 65 °C storage tank temperature, 45 °C hot water temperature and 10 °C cold water temperature
2) Explanation: The specific water flow as defined in EN 825 is the domestic hot water flow which the GasSolarUnit can supply at an average temperature increase of 30 K with two successive withdrawals of water of ten minutes duration each, assuming a charging temperature of 65 °C. An interval of 20 minutes is normally assumed between the withdrawals. The GasSolarUnit acheives these values even with shorter intervals.