21
Pos.
Description
Heat source
1
Internal unit, heat pump, Vitocal 200-S, type AWB-AC
2
Heat pump control unit Vitotronic 200, type WO1B
3
Outside temperature sensor ATS
4
Instantaneous heating water heater with control module
5
3-way diverter valve for "Heating/DHW"
6
Secondary pump
8
KM BUS distributor
q
W
Safety assembly
q
E
Heating circuit expansion vessel
q
T
Flow switch
Primary circuit
w
U
Liquid line
w
I
Hot gas line
w
O
External unit, Vitocal 200-S heat pump
DHW heating
e
P
DHW cylinder (indirect coil)
e
Q
Cylinder temperature sensor STS
e
U
DHW circulation pump ZP
External heat source
q
R
High limit safety cut-out for switching off the secondary pump
t
P
External heat source, e.g. oil/gas boiler
t
Q
External heat source demand (connection to heat pump control unit)
t
W
Circulation pump for cylinder heating UPSB
t
E
Boiler water temperature sensor KTS (for connection to the heat pump
control unit):
■ As contact temperature sensor
or
■ As immersion temperature sensor
t
R
Mixer motor directly controlled
t
T
High limit safety cut-out STB 70°C (for switching off the external heat
source)
Preparing for installation
System example 2, ID: 4605170_1103_04
(cont.)
5604 692 GB
Installation
