Viessmann Vitocal 300-G BW, Installation And Service Instructions Manual

Page: 183 / 216

183
A
x
x
x
x
x
x
x
x
x
x
x
D
B
C
E
F
G
H
K
L
M
N
A Connection, control circuit (part 1),
see page 182
B Compressor relay (control unit ena-
ble)
C Primary pump (already integrated
for type BWC/WWC)
D Protective motor switch, primary
pump (primary pump already inte-
grated in type BWC/WWC; if protec-
tive motor switch is installed, jumper
fitted at the factory, see page 181)
E Control signal natural cooling (NC)
F Secondary pump
G Instantaneous heating water heater
(stage 1)
H
Mixer
|
OPEN, heating circuit with
mixer M2
K Mixer
~
CLOSE, heating circuit with
mixer M2
L Heating circuit pump for heating cir-
cuit with mixer M2
M Cylinder primary pump / shut-off
valve
N Control, electric immersion heater
EHE (or cylinder reheating with
pump when using an external heat
source)
Connection and wiring diagrams
Control circuit (part 2)
5368 522 UAE
Service