13
Equipment required
Pos.
Designation
1
Heat pump stage 1
2
Heat pump control unit
9
Heat pump stage 2
qT
Primary pump, heat pump stage 1
qZ
Primary circuit flow temperature sensor (for installation, see page 51)
qU
Primary circuit return temperature sensor (for installation, see
page 51)
qO
Frost stat, primary circuit
wP
Brine accessory pack
wQ
Pressure switch, primary circuit
wW
Separating heat exchanger
wE
Flow switch, well circuit (remove jumper before connecting)
wR
Dirt trap
wT
Primary pump, heat pump stage 2
wZ
Well pump (suction pump for groundwater; connect via on-site contactor
with fuse protection)
■ 230 V connection: See page 14.
■ 400 V connection: See pages 15, 19.
wU
Delivery well
wI
Return well
Note
Fit primary circuit flow and return tem-
perature sensor with the sensor well set
provided.
Electrical installation scheme
For an overview of the electrical connec-
tions and more detailed information
regarding the PCBs, see from
page 34 and the service instructions
for the "Vitotronic 200 heat pump control
unit".
Preparing for installation
Primary circuit, type BW + BWS (2-stage)
(cont.)
5546 267 GB
Installation
