Viessmann Vitocal 300-G Installation And Service Instructions Manual page 30

Preparing for installation
Primary circuit, type WW 301.A + BWS 301.A...
Equipment required
Pos. Description
1
Heat pump stage 1
2 Heat pump control unit
9 Heat pump stage 2
qT
Common primary pump
qZ Primary circuit flow temperature sensor (for installation, see page 90)
qU Primary circuit return temperature sensor (for installation, see
page 90)
qO Frost stat, primary circuit
wP Brine accessory pack
wQ Pressure switch, primary circuit
wW Heat exchanger, primary circuit
wE Flow limiter, well circuit (remove jumper before connecting)
wR Dirt trap
wZ Well pump (suction pump for groundwater; connect via on-site contactor
with fuse protection)
■ 230 V connection: See page 26
■ 400 V connection: See pages 31, 27
wU Delivery well
wI Return well
Electrical installation scheme
For an overview of the electrical connec-
tions and more information on the PCBs,
see from page 72 and the separate
service instructions, Vitotronic 200 heat
pump control unit.
30
(cont.)