Solar DHW tank SKL

Solar DHW tank SKL

Solar energy rationally stored ...

Inside enamelled solar domestic hot water tank for central hot water supply, two heat exchangers with big surface, prepared for auxiliary heating by an electrical element.
Available standard sizes 200, 300, 400, 500, 750 und 1000 litres.


Perfectly aligned for solar systems

Hygiene in the high performance DHW tank SKL is guaranteed by heating up the special heat exchangers during solar operation. The high power solar exchanger is decisive for the performance of the solar system. The temperature in the solar return line of the SKL is up to 15°C lower than with regular DHW tanks and with their regular heat exchangers due to its arrangement far down of the tank. Thus, the efficiency factor of the solar system and the performance of the collectors is increased up to 15%.

Due to the supplementary heat exchanger, which is located in the upper part of the tank, the heating value is guaranteed even when heating up with a condensing boiler. Therefore, the DHW output capacity of our tanks is a lot higher than the output capacity of regular solar tanks. An interconnection of both heat exchangers is possible to get an high performance anti-legionella tank, p. ex. for the application with heat pumps or in the hotel industry.



Take advantage of these benefits
  • perfectly aligned for all solar systems
  • also suitable for condensing technology
  • twin coil tank, two plain tube heat exchangers (solar and heating)
  • high quality steel S235JR
  • internal corrosion protection with double enameling (Made in Germany)
  • magnesia anode installed
  • insulation for SKL 200 to SKL 500: PU rigid foam (non-removable), insulation thickness approx. 50 mm
  • insulation for SKL 750 and SKL 1000: removable flexible foam insulation WLG 0,039, insulation thickness approx. 75 mm
  • silver PVC jacket, fire protection classification: B2
  • installation of an electric heating element possible




Successful detail solutions





Technical specifications

Solar DHW tank SKL   200 300 400 500 750 1000
nominal capacity L 209 305 411 454 740 926
height with insulation [A] mm 1265 1515 1630 1805 1870 2120
height without insulation [B] mm - - - - 1805 2055
tilted height mm 1450 1650 1780 1960 1900 2150
diameter with insulation [C] mm 610 650 700 750 950 950
diameter without insulation [D] mm - - - - 790 790
insulation thickness non-removable solid foam mm 50 50 50 50 - -
insulation thickness removable solid foam mm - - - - 80 80
jacket   PVC, silver
max. operating pressure tank bar 10 10 10 10 10 10
max. operating temperature tank °C 95 95 95 95 95 95
weight kg 92 114 149 173 238 250
max. size of electric heating element (optional) kW 4,5 4,5 4,5 6 9 9

standby heat loss according to EN 12897:2006   200 300 400 500 750 1000
standby heat loss W 59 70 82 91 132 145
energy efficiency class B B C C -- --
heating label   PDF PDF PDF PDF -- --

specification heat exchanger top   200 300 400 500 750 1000
heating surface 0,9 1,4 1,4 1,4 2,5 2,5
capacity L 5,5 6,5 6,5 6,5 15 15
pressure drop (2 m³/h) mbar 42 83 83 83 123 123
max. operating pressure bar 10 10 10 10 10 10
max. operating temperature °C 95 95 95 95 95 95

tap power output heat exchanger top   200 300 400 500 750 1000
continuous tap output at 17 kW
(HV 70°C | CW 10°C/HW 45°C)
l/h 351 617 662 702 813 869
continuous tap output at 27 kW
(HV 70°C | CW 10°C/HW 45°C)
l/h 490 890 935 975 1090 1145
continuous tap output at 50 kW
(HV 70°C | CW 10°C/HW 45°C)
l/h 788 1495 1535 1580 1690 1745
performance indicator NL at 70/50 heat exchanger top NL 2,4 3,1 3,6 4,8 11,6 16,8
performance indicator NL at 70/50 both heat exchangers NL 5,6 7,2 11,4 13,7 26,5 34,2

specification solar heat exchanger bottom   200 300 400 500 750 1000
heating surface 0,9 1,8 2,2 2,4 2,5 2,5
capacity L 5,5 8,3 10,5 13,5 15 15
pressure drop (2 m³/h) mbar 43 98 109 135 136 136
max. operating pressure bar 10 10 10 10 10 10
max. operating temperature °C 110 110 110 110 110 110
recommended min. collector surface 4 6 8 10 14 17

connections with dimensioning   200 300 400 500 750 1000
[1] anode (from SKL 400 on an additional anode in the flange)   oben
(Rp 1 ¼″)
oben
(Rp 1 ¼″)
oben
(Rp 1 ¼″)
oben
(Rp 1 ¼″)
oben
(Rp 1 ¼″)
oben
(Rp 1 ¼″)
[2] hot water mm
 
1165
(Rp 1″IG)
1345
(Rp ¾″IG)
1505
(Rp ¾″)
1640
(Rp ¾″)
1590
(Rp 1 ¼″)
1840
(Rp 1 ¼″)
[3] heating flow (inlet) mm
 
995
(Rp 1 ¼″)
1245
(Rp 1″)
1355
(Rp 1″)
1510
(Rp 1″)
1440
(Rp 1 ¼″)
1440
(Rp 1 ¼″)
[4] thermometer mm
 
930
(Rp ½″)
1200
(Rp ½″)
1300
(18x2)
1450
(18x2)
1460
(Rp ½″)
1680
(Rp ½″)
[5] tap water sensor mm
 
915
(Rp ½″)
1080
(Rp ½″)
1125
(Rp ½″)
1285
(Rp ½″)
1340
(Rp ½″)
1340
(Rp ½″)
[6] circulation mm
 
885
(Rp ¾″)
985
(Rp ¾″)
1030
(Rp ¾″)
1185
(Rp ¾″)
1235
(Rp 1″)
1235
(Rp 1″)
[7] heating return (outlet) mm
 
680
(Rp 1 ¼″)
885
(Rp 1″)
935
(Rp 1″)
1060
(Rp 1″)
990
(Rp 1 ¼″)
990
(Rp 1¼″)
[8] electric heating element mm
 
630
(Rp 1 ½″)
830
(Rp 1 ½″)
880
(Rp 1 ½″)
1010
(Rp 1 ½″)
890
(Rp 1 ½″)
890
(Rp 1 ½″)
[9] solar flow (inlet) mm
 
580
(Rp 1 ¼″)
770
(Rp ¾″)
805
(Rp ¾″)
885
(Rp ¾″)
835
(Rp 1 ¼″)
835
(Rp 1 ¼″)
[10] solar sensor mm
 
475
(Rp ½″)
400
(Rp ½″)
420
(Rp ½″)
370
(Rp ½″)
685
(Rp ½″)
685
(Rp ½)
[11] flange Ø 114 mm (from SKL 400 on with addidional anode) mm
 
260
-
400
-
420
(M8x30)
390
(M8x30)
400
(M8x30)
400
(M8x30)
[12] solar return (outlet) mm
 
265
(Rp 1 ¼″)
245
(Rp 1″)
265
(Rp 1″)
285
(Rp 1″)
385
(Rp 1 ¼″)
385
(Rp 1 ¼″)
[13] cold water mm
 
70
(Rp 1″)
145
(Rp ¾″)
110
(Rp ¾″)
165
(Rp ¾″)
220
(Rp 1 ¼″)
220
(Rp 1 ¼″)



Manufacturing tolerance according to DIN ISO 13920 C
Please take the instructions for installation/start up/maintenance from the relevant operation manuals




Further product informations


Brochure heat storage tanks

Brochure
heat storage tanks

16-page brochure, DIN A4
PDF-file, 1.2 MB

pdf DOWNLOAD

Manual DHW tank SKL

Manual
DHW tank SKL

12-page brochure, DIN A5
PDF-Datei, 0.38 MB

pdf DOWNLOAD


 
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