Boiler

• Oil condensing
• Gas condensing
• For heating and hot water
• Structure and function
• Water hygiene
• New buildings and refurbishments
• Integrated solar energy use
• Save energy using solar energy
• Technical data
• A1 gas condensing
• Large-area heating with gas

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	m²	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	m²	-	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.