21
Equipment required
Pos.
Description
1
Heat pump stage 1
2
Heat pump control unit
9
Heat pump stage 2
qT
Primary pump, heat pump stage 1
qZ
Flow temperature sensor, primary circuit
qU
Return temperature sensor, primary circuit
wP
Brine accessory pack
wQ
Pressure switch, primary circuit
wW
Brine distributor, geothermal probes/collectors
wT
Primary pump, heat pump stage 2
wU
Geothermal probes/collectors
Note
Either fit primary circuit flow and return
temperature sensors in the sensor wells
of the hydraulic modules (accessories)
or use a sensor well set (accessories).
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
Primary circuit, type BW + BWS (2-stage,…
(cont.)
5609 667 GB
Installation
