• For the central supply of complete residential buildings
• Closed special enamelled inner container with magnesium protective anode
• Low standby energy consumption with excellent rigid foam thermal insulation
• For single and twin-circuit operation
• Rapid heating function in single circuit operation
• With safety temperature limiter
• Temperature range can be adjusted steplessly from approx. 35°C to approx. 82°C
• Permissible operating pressure: 0.6 MPa (6 bar)
• Protection type IP 24

Model STM	200 litres	300 litres	400 litres
Technical data
Energy efficiency class	C*)	C*)	C*)
Water pipe connections	DN 25 (1”)	DN 25 (1”)	DN 25 (1”)
Weight empty/with water [kg]	75	95	126
Connection type 1 - 230 V	1/N/PE	1/N/PE	1/N/PE
Connection type 2 - 400 V	3/N/PE	3/N/PE	3/N/PE
Connected load [kW]	2-6	2-6	2-6
Consumption of standby current/24 h [kWh]	1.6	2.0	2.35
Mixed water volume at 40°C [l]	397	590	780
Connection dimensions
A [mm]	630	700	750
B [mm]	730	815	865
C [mm]	340	365	375
e [mm] bolt circle heating flange	430	490	540
h [mm]	1570	1585	1755
k [mm]	1035	1040	1160
n [mm]	80	75	75