Primary Circuit: Brine/Water, Heat Pump Cascade (Type Bw 301.C090 To Bw 302.C230) - Viessmann Vitocal 300-G Pro Installation And Service Instructions For Contractors

Hydraulic connection requirements

Primary circuit: brine/water, heat pump cascade (type BW 301.C090 to BW 302.C230)

Hydraulic installation scheme
20
22
27
Fig. 12
Equipment required
Pos. Description
Lead heat pump
1
Heat pump control unit with LON communication module (accessories)
2
Lag heat pump
9
Primary pump, lead heat pump (fail-safe)
qT
Note
For 2-stage Vitocal 300-G Pro, a primary pump can be used for stages 1 and 2 respectively. Ob-
serve minimum flow rate.
Brine safety assembly
wP
Pressure switch, primary circuit
wQ
Brine manifold, geothermal probes/collectors
wW
Primary pump, lag heat pump (fail-safe)
wT
Note
For 2-stage Vitocal 300-G Pro, a primary pump can be used for stages 1 and 2 respectively.
Geothermal probes
wU
Electrical installation scheme
For a summary of electrical connections, see from
page 31 and separate "Connection and wiring dia-
gram".
(cont.)
21
--2/LP1 X3.8;3.9--
--2/211.1--
25
9
2
Preparing for installation
--2/211.1--
15
1
2
19