Viessmann VITOCAL 300 Installation And Service Instructions Manual page 17

System design on the primary side
Required devices
Pos. Description
1
Heat pump Vitocal 300, type WWC = type BWC plus
conversion kit (with frost stat 2 and flow switch 3)
with integral intermediate circuit pump 4, secondary
pump 5 and instantaneous heating water heater 6
7
Delivery well
8
Return well
9
Primary pump (groundwater vacuum pump)
qP
Dirt trap
qQ
Volume choke
qW
Intermediate circuit heat exchanger
qE
Brine pressure switch for intermediate circuit (option)
qZ Contactor (on-site) for switching the primary pump 9
Connection diagram
A The connection may be made in
parallel at coil terminal K32
qR Remove jumper when making this
connection
Preparing for installation
(cont.)
qT Optional connection of a power-
OFF conversion kit
qU Power supply to the primary
pump 3/N/PE 400 V∼ (on-site)
Qty.
1
as required
as required
as required
1
1
1
1
1
17