Rotex E-Solar Unit ESU 509, Installation And Maintenance Instructions Manual

Page: 62 / 72

12 Technical data
62
FA ROTEX ESU - 07/2008
12 Technical data
Tab. 12-1 Basic data for the ROTEX E-SolarUnit
Basic data Pos. in Fig. 12-1 Unit
Total storage capacity litres 500
Empty weight 6 kg 110
Total filled weight kg 610
Dimensions (L x B x H) cm 79 x 79 x 181
Maximum permissible storage tank water temperature °C 85
Average hourly temperature drop K/h 0.1
Standby heating power kWh/24h 1.8
Maximum operating pressure, heating/domestic water 7/9 bar 10/10
Material for all heat exchangers Stainless steel 1.4404
Domestic hot water
Domestic water capacity litres 24.5
Domestic water heat exchanger surface m
2
5.5
Average specific thermal output W/K 2470
Pressure drop in the domestic water heat
exchanger (at a withdrawal rate of 15 l/min) mbar 185
Storage tank charging heat exchanger (stainless steel)
Water content heat exchanger litres 10.4
Surface of charging heat exchanger m
2
2.3
Average specific thermal output W/K 1040
Pressure drop in heat exchanger 1
(at a flow rate of 1000 l/h) mbar 96
Solar heating support
Heat exchanger surface area m
2
0.43
Average specific thermal output W/K 200
Pressure drop in heat exchanger
(at a flow rate of 1000 l/h) mbar 18
Thermal output data Pos. in Fig. 12-1 Unit
NL efficiency characteristic acc. to DIN 4708
1)
1.8
D value, spec. water flow acc. to EN 625
2)
10 l/min 22
Continuous output Q
D
according to DIN 4708 kW 9
Maximum draw-off rate for a duration of 10 min
(T
TK
= 10 °C/T
WW
=40 °C/T
SP
= 60 °C)
l/min 19
Hot water quantity without reheating with up to 15 l/min
draw-off rate (T
KW
= 10 °C/T
WW
= 40 °C/T
SP
= 60 °C)
litres 220
Hot water volume with reheating at a draw-off rate of 15
l/min (T
KW
= 10 °C/T
WW
= 40 °C/T
SP
= 60 °C)
litres 270
Temporary water volume in 10 min
3)
litres 190
Tab. 12-2 Thermal output data for the ROTEX E-SolarUnit
1)
Recharging with nominal output, flow temp. T
V
= 80 °C, initial storage tank temp. T
SP
= 65 °C, cold water temp. T
KW
= 10 °C, hot water temp. T
WW
= 45 °C
2)
The specif. water flow acc. to EN 625 is the domestic water flow, at an average temperature increase of 30 K, which the ROTEX ESU can supply if two draw-off
procedures each of 10 minutes duration are performed one after the other, assuming a charging temp. of 65 °C. A delay of 20 minutes between the two draw-off
procedures is usually assumed. The ROTEX ESU also achieves this value even if the delay is shorter.
3)
Recharging with nominal output, initial storage tank temp. T
SP
= 60 °C, cold water temp. T
KW
= 10 °C, hot water temp. T
WW
= 40 °C