18
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
22
27
20
21
1
15
--2/211.1--
P1
25
--2/224.2--
P1
2
--KM BUS--
--230 V
--
--F2--
--21
1.1--
--F3--
--224.2--
--LP1 X3.8;3.9--
--2/LP1 X3.8;3.9--
P
Fig. 11
Required equipment
Pos.
Description
1
Heat pump
2
Heat pump control unit
qT
Primary pump 1 (fail-safe)
wP
Brine safety assembly
wQ
Pressure switch, primary circuit
wW
Brine manifold for geothermal probes/collectors
wT
Optionally: 2nd primary pump (fail-safe) for stage 2
Note
■
Contactor relay required.
■
Size primary pump 1
qT
for partial load.
wU
Geothermal probes
Electrical installation scheme
For a summary of electrical connections, see from
page 31 and separate "Connection and wiring dia-
gram".
Preparing for installation
Hydraulic connection requirements
(cont.)
5787 232 GB
Installation
Summary of Contents for BW 301.C090
Page 91: ...91 5787 232 GB...
