Technical data

17
Heating system designs
System version 5
Controlling the return temperature with a low loss header and a three-way mixing valve
Vitorond 200, VD2
A Boiler with Vitotronic 100, GC1
B Vitocontrol-S, VD2/CT3/CM2
C DHW tank
E Low loss header
D Mixing valve circuit
Plug
! Outdoor temperature sensor
? Supply temperature sensor
common heating supply
? M2/M3 Supply temperature sensor
mixing valve circuit 2 or 3
§ Boiler temperature sensor
% DHW tank temperature sensor
aJA Temperature sensor T1
sÖ M2/M3 Heating circuit pump mixing
valve circuit 2 or 3
sA DHW pump
sK DHW recirculation pump
sL Boiler circuit pump
fÖ Power supply, 120 VAC
60 Hz
fA Burner (burner stage 1)
gS A1 Three-way mixing valve
gS M2/M3 Mixing valve actuator
circuit 2 or 3
lÖ Burner
(burner stage 2 / mod.)
aVD/aVH External connections
(see page 44)
5351 340 v1.4
LON LON
LON LON
40
143
146
LON
LON
B
1
28
5
21
2
20
52
2
20 52
M2
M3
2
D
17A
D
A
3
C
A
90
41
40
143 146
52 A1
29
17A
3
90
41
40
143 146
52 A1
29
T1 T1
E