Viessmann Vitola 200 Technical Manual page 12

Installation Examples
With one low-temperature circuit with 3-way mixing valve, one high-temperature circuit,
and with domestic hot water production
e.g. with Vitotronic 200, KW2 combined with one Mixing Valve Actuator Accessory Kit
With two low-temperature circuits with mixing valves,
one high-temperature circuit, and with domestic hot water production
e.g. with Vitotronic 300, KW3 combined with two Mixing Valve Actuator Accessory Kits
12
Heating circuit
Spring-loaded flow check valve
Circulation pump
Safety header
with automatic air vent,
pressure relief valve, and
pressure gage
Expansion tank
Domestic hot water storage tank
(indirect-fired)
3-Way mixing valve
4-Way mixing valve