37
Note
Type BWC 351.A07 is illustrated. In this
case, the circulation pumps are fitted and
connected at the factory (primary pump
qT
, secondary pump
6
, circulation
pump for cylinder heating
7
, instanta-
neous heating water heater
4
optional).
In type BW/WW 351.A07, no circulation
pumps are fitted at the factory. For the
connection, see "System examples"
(from page 45).
Required equipment
Pos.
Description
1
Heat pump
2
Heat pump control unit
7
Circulation pump for cylinder heating
eP
DHW cylinder
eW
Cylinder temperature sensor
eE
Cylinder loading pump (DHW side)
eR
Plate heat exchanger
eT
Flow limiter
eZ
Motorised 2-way valve, normally closed
eU
DHW circulation pump
Electrical installation scheme
For an overview of the electrical connec-
tions and more information on the PCBs,
see from page 76 and the separate
service instructions for the Vitotronic 200
heat pump control unit.
Preparing for installation
DHW heating
(cont.)
5609 667 GB
Installation