Viessmann VITOTRONIC 200 Service Instructions Manual page 18

Introduction
Appliance types
(cont.)
Alongside the hydraulic components for the secondary
circuit, the indoor unit also houses the refrigerant cir-
cuit condenser and Vitotronic 200, type WO1C heat
pump control unit.
The indoor and outdoor units are hydraulically connec-
ted to each other via refrigerant lines. The indoor and
outdoor units communicate via Modbus.
Indoor unit as wall mounted appliance
A
B
C
D
E
Fig. 1
Secondary circuit flow (central heating and DHW
A
heating)
3-way diverter valve "Central heating/DHW heat-
B
ing"
C Instantaneous heating water heater (factory-fitted
or as accessory, depending on type)
Secondary pump
D
Condenser
E
Compressor
F
Evaporator
G
Fan
H
Electronic expansion valve
K
18
Compact indoor unit without installation kit with
mixer
A
G
F
H
K
Fig. 2
A
B
C
D
E
F
G
H
K
L
E
C
B
D
L
Secondary circuit flow (central heating only)
3-way diverter valve "Central heating/DHW heat-
ing"
Instantaneous heating water heater (factory-fitted
or as accessory, depending on type)
Secondary pump
Condenser
Compressor
Evaporator
Fan
Electronic expansion valve
DHW cylinder
G
F
H
K