Viessmann Vitocal 350-A Installation And Service Instructions Manual page 48

Preparing for installation
DHW heating
Required Equipment
Pos. Description
1 DHW cylinder
2 Immersion heater EHE (accessory; provide wiring on site. Only use as an
alternative to the instantaneous heating water heater or external heat source
for DHW reheating)
3 DHW circulation pump (optional)
4 Cylinder temperature sensor, top
5
Cylinder temperature sensor, bottom (optional)
6 Circulation pump for cylinder heating (for type AWH-O accessory; for type
AWH-I integral three-way diverter valve "Heating/DHW")
LP1 LP2
x7.11
x1.
?
x2.N
x8.13
x2.N
x7.10
x1.
?
x2.N
LP3
x1.14
x2.14
x1.13
x2.13
LP... PCB (see page 76)
48
(cont.)
M
1~
L1 L2 L3 N
M
1~
F6
Pt 500
F7
Pt 500
ZP 3
?
2
UP 6
STS
4
STS 5