Primary Circuit: Brine/Water, 2-Stage (Type Bw 302.D090 Bw 302.D110, Bw 302.D140, Bw 302.D180 And Bw 302.D230) - Viessmann Vitocal 300-G Pro Series Installation And Service Instructions For Contractors
84.8 to 222.0 kw brine/water heat pumps, 2-stage
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Also See for Vitocal 300-G Pro Series:
- Installation and service instructions manual (160 pages) ,
- Installation and service instructions for contractors (100 pages) ,
- Installation and service instructions manual (72 pages)
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Hydraulic connection requirements
Primary circuit: Brine/water, 2-stage (type BW 302.D090, BW 302.D110,
BW 302.D140, BW 302.D180 and BW 302.D230)
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".
(cont.)
21
--2/LP1 X3.8;3.9--
--2/211.1--
--2/224.2--
15
25
qT
for partial load.
Preparing for installation
1
2
17
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