Buffer tank VTE-2

Capacity from 160 to 500 liters;
Magnesium anode for additional anti-corrosion protection;
Side inspection flange;
Quality thermal protection of rigid polyurethane foam with thickness of 50 mm;
Hole for mounting of thermoelectric heating element;
Equipped with thermometer.

DOWNLOAD Technical catalog VTE-2

TECHNICAL DESCRIPTION

The calorifier is designed for heating water in bivalent systems, as well as for its accumulation and storage for DHW. The lower heat exchanger is intended for connection to low-temperature heat sources (e.g., solar collectors, heat pumps). The upper heat exchanger is optimized for integration with high-temperature sources, primarily used for supplementary heating The tank features a flanged inspection port with a sealed cover for periodic maintenance access. A fitting above the heat exchanger is provided to install an electric heating element. Two magnesium anodes ensure corrosion protection.

MATERIALS

Tank and heat exchanger are constructed from cold-rolled carbon steel with an internal double-layer enamel coating, baked at 860°C by DIN 4753 standards.

THERMAL INSULATION

Rigid polyurethane foam insulation, 50 mm thick, encased in a zippered “sky” finish casing, compliant with all requirements of the ErP 2009/125/EC Directive.

Overall connection dimensions

V_{of tank}, l	Dimensions, mm			S_T1, m²	V_T1, l	S_T2, m²	V_T2, l	Mounting dimensions, mm
V_{of tank}, l	H	ØD	Ød	S_T1, m²	V_T1, l	S_T2, m²	V_T2, l	h1	h2	h3	h4	h5	h6	h7	hf	hT1	hT2	hT3	hT4
200	1200	600	500	0,75	4,6	0,54	3,3	628	993	199	478	746	815	993	314	284	585	671	886
200	1200	600	500	0,75	4,6	0,54	3,3	1½”	½”	1″	½”	¾”	½”	1″	314	1″
300	1760	600	500	1,27	7,66	0,85	5,1	862	1512	242	512	1088	1122	1512	287	242	782	942	1302
300	1760	600	500	1,27	7,66	0,85	5,1	1½”	½”	1″	½”	¾”	½”	1″	287	1″
400	1407	750	650	1,65	10	0,76	4,6	813	1156	220	617	943	998	1156	331	302	775	858	1073
400	1407	750	650	1,65	10	0,76	4,6	1½”	½”	1″	½”	¾”	½”	1″	331	1″
500	1674	750	650	2,25	13,7	1,06	6,4	986	1448	214	750	1165	1265	1448	324	299	944	1029	1330
500	1674	750	650	2,25	13,7	1,06	6,4	1½”	½”	1″	½”	¾”	½”	1″	324	1″

Show characteristics of VTE-1 tanks of different capacities

Model	Capacity	Weight	Isolation (rigid polyurethane foam)	Surface of heat exchanger		Tank of heat exchanger		Variable power in continuous operation mode (maximum heat exchanger output) *60-80/70-90°C		Speed of continuous flow ΔT 35°C *60-80/70-90°C		Max. amount of mixed water MIX 45°C (**15-60°C), Heat exchanger input power off		Heat losses ΔT 45K
Model	Capacity	Weight	Isolation (rigid polyurethane foam)	S1	S2	S1	S2	S1	S2	S1	S2	S1	S2	Heat losses ΔT 45K
VTE-200-2	200 l	70 kg	50 mm	0.75 m²	0.54 m²	4.6 l	3.3 l	23/30 kW	13/20 kW	558/648 l/h	318/468 l/h	225 l	111 l	2.5 kWh/24 h
VTE-300-2	300 l	121 kg	50 mm	1.27 m²	0.85 m²	7.66 l	5.1 l	34/ – kW	26/ – kW	792/1092 l/h	594/785 l/h	– l	– l	2.1 kWh/24 h
VTE-400-2	400 l	146 kg	50 mm	1.65 m²	0.76 m²	10 l	4.6 l	47/61 kW	21/30 kW	1002/1500 l/h	470/648 l/h	405 l	200 l	2.8 kWh/24 h
VTE-500-2	500 l	158 kg	50 mm	2.25 m²	1.06 m²	13.7 l	6.4 l	61/73 kW	35/47 kW	1500/1795 l/h	785/1002 l/h	510 l	250 l	2.9 kWh/24 h

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