Residential Heating and Hot Water System

WST Top Connection Tank

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WST Top Connection Tank 120L:
Suitable for Bosch Wall hung boiler, floor stand boiler and solar system.

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Tank Type	Unit	WST 120-5O
WST Top Tank
Gerneral data
Height	mm	980
Height when tilted	mm	-
Minimum room height for anode replacement	mm	-
Diameter (total)	mm	510
Warm water outlet	DN	R3/4''
Connection size, cold water	DN	R3/4"
Connection size, DHW circulation	DN	-
flow line boiler/heat source	DN	R3/4"
return flow boiler/heat source	DN	R3/4''
Weight (dry, excl. Packaging)	kg	69
Cylinder capacity
Available capacity (total)	l	120
Available amount of DHW at 45oC DHW outlet temperature (boiler heated)	l	163
Standby heat loss to DIN 4753 part 8	kWh/24h	1.7
Maximum troughout, cold water inlet	l/min	12
Maximum DHW temperature	°C	95
Maximum operating pressure, DHW	bar	10
highest design pressure (cold water)	bar	7.8
Maximum DHW test pressure	bar	10
Heat exchanger for boiler
Contents	l	3
Surface area	m2	0.6
Performance factor NL to DIN 4708		1.2
Continuous output (at 80°C flow temperature,45°C DHW outlet temperature and 10°C cold water temperature)	kW	20
	l/min	8.2
Heat-up time at rated output	min	25
Maximum heat input (at 10°C cold water temperature)	kW	20
Max. heating water operating temperature	°C	160
Max. heating water operating pressure	bar Ü	16