Viessmann Vitocal 300-G Installation And Service Instructions Manual page 12

Preparing for installation
Primary circuit, type BW 301.B + BWS 301.B (2-stage)
With water/water heat pump conversion kit: 2 primary pumps
Hydraulic installation scheme
20
22
23
24
19
---------
26
27 28
Fig. 5
Equipment required
Pos. Designation
Heat pump stage 1
1
Heat pump control unit
2
9 Heat pump stage 2
Primary pump for heat pump stage 1
qT
Primary circuit flow temperature sensor: For in-
qZ
stallation, see page 40.
Primary circuit return temperature sensor: For
qU
installation, see page 40.
Frost stat, primary circuit
qO
Brine accessory pack
wP
Pressure switch, primary circuit
wQ
Separating heat exchanger, primary circuit
wW
12
21
--2/X3.8;3.9--
--F3--
17
--2/X3.8;3.9--
16
--F2--
--2/224.2-- --2/211.1--
25 15
9 1
2
Pos. Designation
Flow switch, well circuit (remove jumper before
wE
connecting)
Dirt trap
wR
Primary pump for heat pump stage 2
wT
Well pump (suction pump for groundwater; con-
wZ
nect via on-site contactor with fuse protection)
230 V connection: See page 13.
■
400 V connection: See pages 16, 13.
■
Delivery well
wU
Return well
wI