Heating system types
16
Heating system types for condensing boilers
System type 5 – Single-boiler system with Vitocrossal 200
A
Boiler with Vitotronic 300
B
Domestic hot water tank
C
Heating circuit with mixing valve
D
Neutralizing unit
plugs
!
Outdoor temperature sensor
?
M2 Supply temperature sensor,
mixing valve circuit 2
?
M3 Supply temperature sensor,
mixing valve circuit 3
§
Boiler temperature sensor
%
DHW tank temperature sensor
sÖ
A1 Heating circuit without mixing
valve (if installed)
sÖ
M2 Heating circuit pump, mixing
valve circuit 2
sÖ
M3 Heating circuit pump, mixing
valve circuit 3
sA
Circulation pump for heating
the DHW tank
sK
DHW re-circulation pump
fÖ
Power supply connection,
120 VAC
fA
Burner (1st stage)
gS
M2 Mixing valve motor, mixing
valve circuit 2
gS
M3 Mixing valve motor, mixing
valve circuit 3
lÖ
Burner (2nd stage/modulating)
aVD
Connection of external
equipment (see page 38)
aVH
Connection of external
equipment (see page 39)
5285
941
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