Viessmann VITOCAL 300-G Technical Manual page 30

Design information
One common primary pump (on site)
wR
3
wZ wU
P Primary circuit interface
Equipment required
Pos. Description
1 Heat pump stage 1 with conversion kit water/water heat pump
2 Heat pump control unit
9 Heat pump stage 2
qT Common primary pump
qZ Flow temperature sensor, primary circuit
qU Return temperature sensor, primary circuit
qO Frost stat, primary circuit (component of conversion kit)
wP Brine accessory pack
wQ Pressure switch, primary circuit
wW
Heat exchanger, primary circuit
wE Flow limiter, well circuit (component of conversion kit; remove jumper when connecting)
wR Dirt trap
wZ Well pump (suction pump for groundwater; connection via on-site contactor with fuse protection)
wU
Delivery well
wI Return well
VIESMANN
30
(cont.)
wQ
P P
wP
wE
qT
wW
qO
wI
qZ
P
qU
2
9 1
VITOCAL 300-G