Viessmann Vitocal 300-G Installation And Service Instructions Manual page 10

Preparing for installation
Primary circuit, type BW/BWC 301.B
With water/water heat pump conversion kit: 1 primary pump
Hydraulic installation scheme
20
22
23
24
27
---------
26
Fig. 2
Note
Type BWC 301.B is shown. In this case, the circulation
pumps are fitted and connected at the factory (primary
pump , secondary pump
qT
cylinder heating 7 , instantaneous heating water
heater optional).
4
For type BW 301.B, no circulation pumps are factory-
fitted. For the connection, see "Electrical installation
scheme".
Equipment required
Pos. Designation
Heat pump
1
Heat pump control unit
2
Primary pump
qT
Frost stat, primary circuit
qO
Brine accessory pack
wP
Pressure switch, primary circuit
wQ
Separating heat exchanger, primary circuit
wW
Flow switch, well circuit (remove jumper when
wE
connecting)
10
21
--2/X3.8;3.9--
1 1
--2/X3.8;3.9--
19
15
28
, circulation pump for
6
7 4
6
2
Pos. Designation
Dirt trap
wR
Well pump (suction pump for groundwater; con-
wZ
nect via on-site contactor with fuse protection)
230 V connection: See page 11.
■
400 V connection: See page 11.
■
Delivery well
wU
Return well
wI