Viessmann VITOCAL 300-A Installation And Service Instructions Manual page 49

System version 3
Equipment required
Pos. Description
Heat source
1
Heat pump
2
Instantaneous heating water heater (accessory, with control module)
4
Heat pump control unit (with electrical connecting cable to the heat
pump)
5
Circulation pump for cylinder heating (accessory; for type AWC-I-M in-
tegral three-way diverter valve "Heating/DHW")
6
Secondary pump (accessory; standard delivery for type AWC-I-M)
8
Safety assembly (accessory; standard delivery for type AWC-I-M)
9
Expansion vessel (accessory; standard delivery for type AWC-I-M)
qP
Outside temperature sensor
qQ
KM BUS distributor
qW
Secondary flow temperature sensor (for type AW-O-M: Install inside the
building in the secondary flow)
External heat source
wP
External heat source (e.g. Vitola 200)
wQ
External heat source demand
wW
Mixer motor
wE
External heat source temperature sensor (flow temperature sensor sys-
tem)
wR
High limit safety cut-out 70 °C for shutting down the external heat
source (on site)
wT
High limit safety cut-out 70 °C for switching off the secondary pump (on
site)
wZ
Circulation pump for cylinder reheating
wU
Boiler temperature sensor in the external heat source (connection to
the heat pump control unit)
DHW heating with cylinder primary system
eP
Cylinder
eQ
Cylinder temperature sensor
eW
DHW circulation pump ("Wtimer DHW Circ.")
eE
Motorised two-way valve
eR
Flow rate limiter
eT
Plate-type heat exchanger
eZ
Cylinder primary pump
Heating water buffer cylinder
tP
Heating water buffer cylinder
tQ
Buffer temperature sensor above
Heating circuit without mixer (A1)
zP
Radiator heating circuit
zQ
Vitotrol remote control
(cont.)
Preparing for installation
49