Primary Circuit: Brine/Water, 2-Stage (Type Bw 302.C090, Bw 302.C110, Bw 302.C140, Bw 302.C180 And Bw 302.C230) - Viessmann Vitocal 300-G Pro Installation And Service Instructions For Contractors

Preparing for installation
Hydraulic connection requirements
Primary circuit: brine/water, 2-stage (type BW 302.C090, BW 302.C110,
BW 302.C140, BW 302.C180 and BW 302.C230)
Hydraulic installation scheme
20
22
27
Fig. 11
Required equipment
Pos. Description
Heat pump
1
Heat pump control unit
2
Primary pump 1 (fail-safe)
qT
Brine safety assembly
wP
Pressure switch, primary circuit
wQ
Brine manifold for geothermal probes/collectors
wW
Optionally: 2nd primary pump (fail-safe) for stage 2
wT
Note
Contactor relay required.
■
Size primary pump 1
■
Geothermal probes
wU
Electrical installation scheme
For a summary of electrical connections, see from
page 31 and separate "Connection and wiring dia-
gram".
18
(cont.)
21
--2/LP1 X3.8;3.9--
--2/211.1-- --2/224.2--
15 25
qT for partial load.
1
2