26
Pos.
Description
qZ
Primary circuit flow temperature sensor (for installation, see page 94)
qU
Primary circuit return temperature sensor (for installation, see
page 94)
qO
Frost stat, primary circuit
wP
Brine accessory pack
wQ
Pressure switch, primary circuit
wW
Heat exchanger, primary circuit
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 27
■ 400 V connection: See pages 32, 28
wU
Delivery well
wI
Return well
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 WW + BWS (2-stage,…
(cont.)
5609 667 GB
