Hygienic stratification buffer tank HSK-SLS /

Hygienic preparation of DHW and heating efficiently due to SLS® system

Heating buffer tank with integrated big stainless steel corrugated tube for legionella safe preparation of DHW, with large dimensioned oval tube heat exchangers. The area of application ranges from single-family houses to hotels and industrial buildings. Available standard sizes 500, 800, 1000, 1250, 1500 und 2200 litres, each type with one stainless steel heat exchanger and two solar heat exchangers. The HSK exclusive version - highest efficiency of solar input and tap water output. With patented thermo-hydraulic stratification system SLS® - unique in its category!
With fleece insulation ISO-B1 with an insulation thickness of 100 mm, or optionally as PLUS-size version with double fleece insulation thickness 100 mm + 120 mm.

This buffer type is also available without stainless steel heat exchanger as version Stratification buffer tank SLS

The hygienic stratification buffer tank HSK-SLS, with integrated Spiro-HT-stainless steel DHW heat exchanger, is perfectly suitable for the preparation of hygienic tap hot water. You will achieve excellent performance values due to the Spiro-HT-technology, which qualifies the tank for either high performance or heat pump installations.

It also qualifies for the integration of versatile heat sources with its patented thermo-hydraulic stratification system SLS®. The heat management can be realized with very low control effort due to its exact stratification characteristics. The integration of thermal solar energy via the two very large dimensioned oval solar heat exchanger provides for a heat transmission that optimizes the efficiency factor of the solar panels.

Established systems are combined in a smart way. The hygienic stratification buffer tank HSK-SLS is therefore the perfect heat center for new buildings, as well as for renovations of old buildings. The high DHW output qualifies the tank for the application in single family as well as in multifamily houses. An intelligent hydraulic connection of several hygienic stratification buffer tanks HSK-SLS even enable the application in large scale plants as well as housing blocks, hotels and diverse industrial objects. In the hygienic stratification buffer tank HSK-SLS our established Solarbayer‐specific HSK system is combined with the patented stratification system SLS®.

Take advantage of these benefits

versatile connection possibilities
connections arranged in 90° angle, possible installation in the corner
perfect heat stratification due to the stratification pipe
high quality steel S235JR
large dimensioned solar oval tube hat exchanger, top and bottom
legionella‐safe DHW preparation
stainless steel corrugated hose 1.4404 with DVGW authorization
high hot water output
insulation fleece ISO-B1 (100 mm) or ISO-B1 Plus (100 + 120 mm)
Einbau einer passenden Elektroheizpatrone möglich

Successful detail solutions

Technical specifications

Hygienic straticification buffer tank HSK-SLS		500	800	1000	1250	1500	2200
nominal capacity	L	483	793	924	1177	1494	2204
height with insulation [A]	mm	1720	1910	2090	2080	2220	2170
height with insulation HSK-SLS-Plus [A]	mm	1840	2030	2210	2200	2335	2290
height without insulation [B]	mm	1645	1835	2015	2005	2145	2095
tilted height	mm	1700	1950	2100	2130	2250	2300
diameter with insulation [C]	mm	850	990	990	1100	1200	1450
diameter with insulation HSK-SLS-Plus [C]	mm	1090	1230	1230	1340	1440	1690
diameter without insulation [D]	mm	650	790	790	900	1000	1250
insulation thickness	mm	100	100	100	100	100	100
insulation thickness HSK-SLS-Plus	mm	220	220	220	220	220	220
weight approx.	kg	158	214	240	290	302	413
max. operating temperature buffer tank	°C	95	95	95	95	95	95
max. operating pressure buffer tank	bar	6	6	6	6	6	6
max. size of electric heating element (optional)	kW	4,5	6	6	6	9	9

stand-by heat loss according to EN 12897:2006 HSK-SLS with ISO-B1® (100mm)		500	800	1000	1250	1500	2200
standby heat loss	kWh/24h	2,43	2,74	2,94	3,26	3,76	4,54
energy efficiency class		C	C	C	C	C	--
efficiency label							--

stand-by heat loss according to EN 12897:2006 HSK-SLS-Plus with ISO-B1® (220mm)		500	800	1000	1250	1500	2200
standby heat loss	kWh/24	1,37	1,56	1,76	1,92	2,25	2,65
energy efficiency class		A	A	A	B	B	--
efficiency label							--

specifications stainless steel DHW heat exchanger		500	800	1000	1250	1500	2200
capacity	L	62	77	77	90	90	105
heating surface	m²	7,2	9,0	9,0	10,5	10,5	12
continuous tap output at 17 kW, T_flow 65°C und CW 10°C/HW 45°C	L/h	480	510	510	522	522	540
continuous tap output at 27 kW, T_flow 65°C und CW 10°C/HW 45°C	L/h	685	735	735	750	750	790
continuous tap output at 50 kW, T_flow 65°C und CW 10°C/HW 45°C	L/h	1090	1345	1345	1380	1380	1465
Ø stainless steel DHW heat exchanger	mm	48	48	48	48	48	48
max. operating pressure DHW heat exchanger	bar	8	8	8	8	8	8
max. operating temperature DHW heat exchanger	°C	95	95	95	95	95	95
pressure drop (2 m³/h)	mbar	67	104	104	128	128	158

specifications solar heat exchanger		500	800	1000	1250	1500	2200
heating surface top	m²	1,3	2	3	3	3,5	4,2
capacity top	L	6,2	9,1	13,7	13,7	15,9	19,1
pressure drop (2 m³/h) top	mbar	69	88	111	111	156	179
heat transmission power (20 K; 1 m³/h; T_flow= 35 °C) top	kW	28	43	64	64	75	90
heating surface bottom	m²	2,3	3,0	3,0	3,0	3,0	5,5
capacity bottom	L	10,4	13,7	13,7	13,7	13,7	25,1
pressure drop (2 m³/h) bottom	mbar	70	112	112	112	112	214
heat transmission power bottom (20 K; 1 m³/h; Tsp = 35 °C)	kW	49	64	64	64	64	118
max. operating pressure	bar	10	10	10	10	10	10
max. operating temperature	°C	110	110	110	110	110	110
recommended min. collector surface	m²	10	14	17	20	23	31

connections with dimensioning		500	800	1000	1250	1500	2200
[1] de-airing (Rp 1 ½″)		oben	oben	oben	oben	oben	oben
[2] sensor (Rp ½″)		oben	oben	oben	oben	oben	oben
[3] flow line boiler/heating (Rp 1½"IG, 2" IG *)	mm	1515	1690	1870	1835	1935	1850
[4] flow line boiler/heating (Rp 1½"IG, 2" IG *)	mm	1515	1690	1870	1835	1935	1850
[5] sensor/thermometer (Rp ½″)	mm	1420	1590	1770	1735	1835	1845
[6] hot water outlet (Rp 1 ¼″)	mm	1410	1580	1760	1725	1825	1835
[7] flow solar top (Rp 1″)	mm	1320	1440	1650	1585	1735	1735
[8] sensor solar top (Rp ½″)	mm	1220	1290	1370	1405	1435	1445
[9] return solar top (Rp 1″)	mm	1120	1160	1270	1165	1235	1295
[10] electric heating element (Rp 1 ½″)	mm	1000	1060	1140	1045	1125	1175
[11] flow boiler/heating (Rp 1 ½″)	mm	900	930	1100	885	1075	1130
[12] flow boiler/heating (Rp 1 ½″)	mm	900	930	1100	885	1075	1130
[13] flow solar bottom (Rp 1″)	mm	800	830	990	765	935	1045
[14] return boiler/heating (Rp 1 ½″)	mm	670	730	890	665	835	925
[15] return boiler/heating (Rp 1 ½″)	mm	670	730	890	665	835	925
[16] sensor/thermometer (Rp ½″)	mm	670	730	770	665	835	845
[17] solar sensor bottom (Rp ½″)	mm	440	470	470	495	535	545
[18] return solar bottom (Rp 1″)	mm	340	370	370	395	435	445
[19] cold water inlet (Rp 1 ¼″)	mm	240	270	270	295	335	335
[20] return boiler/heating (Rp 1½"IG, 2" IG *)	mm	140	170	170	195	235	320
[21] return boiler/heating (Rp 1½"IG, 2" IG *)	mm	140	170	170	195	235	320

* from HSK-SLS 2200 on the connections are Rp 2″

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
storage systems

PDF-file, 1.2 MB

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Manual
hygienic stratification tank HSK-SLS

PDF-file, 0.52 MB

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