Viessmann GW2 Wartungshandbuch Seite 8

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Seitenansicht 7
Heating system types
8
Circuit Diagram 1
Single-boiler system with Therm-Control and three-way mixing valve
in conjunction with Vitorond 200, VD2A
A Heating circuit with mixing valves
B DHW tank
Plug
! Outdoor temperature sensor
?M2 Flow temperature sensor,
mixing valve
?M3 Flow temperature sensor,
mixing valve
§ Boiler water temperature
sensor
% DHW tank temperature sensor
aJA Therm-Control temperature
sensor
M2 Heating circuit pump, mixing
valve
M3 Heating circuit pump, mixing
valve
A1 Closing the mixing valves with
external heating circuit control
units
sA DHW primary pump
sK DHW circulation pump
Power supply, 120 VAC
60 Hz
Install the main isolator in
accordance with regulations
fA Burner (stage 1)
gSM2 Mixing valve motor
gSM3 Mixing valve motor
Burner
(burner stage 2 / mod.)
aVD/aVH External connections
Please refer to the control
manual Vitocontrol-S,
VD2/CT3.
5285 941 v1.5
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