Primary Circuit: Brine/Water, 2-Stage; Type Bw 302.B090, Bw 302.B120, Bw 302.B150, Bw 302.B180, Bw 302.B250 - Viessmann KWT Vitocal 300-G Pro Installation And Service Instructions Manual

Preparing for installation
Primary circuit: brine/water, 1-stage
Required equipment
Pos. Designation
Heat pump
1
Heat pump control unit
2
Primary pump (fail-safe)
qT
Brine safety assembly
wP
Pressure switch, primary circuit
wQ
Brine distributor for geothermal probes/collectors
wW
Geothermal probes
wU
Note
If 2 primary pumps are used, at least 75 % of the nomi-
nal flow rate must be produced during partial load.
Electrical installation scheme
For a summary of electrical connections, see from page 37 and separate "Connection and wiring diagram".

Primary circuit: brine/water, 2-stage

Type BW 302.B090, BW 302.B120, BW 302.B150, BW 302.B180, BW 302.B250

Hydraulic installation scheme
20
22
27
Fig.14
18
(cont.)
21
--2/LP1 X3.8;3.9--
--2/211.1-- --2/224.2--
15 25
1
2