Viessmann 301.BS090, Installation And Service Instructions For Contractors

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18
General hydraulic scheme
CW
DHW
71
M1
M2
M3
r-I
P
P
P
P
P
M
M
M
M
M
M
M
M
M M
M M
M M
r-E
r-R
r-O
r-Q
r-U
r-Z
r-T
r-P
qQ
8
r-W
eU
eQ
eW
eP
qR
qT
qZ
qU
qE
qP
9
eI
eT
eR
eZ
eE
7
8
8
qQ
qW
iT
4
uP
5
6
2
1
8
7
wP
wQ
wW
tP
tP
tW tQ
iP
iE iW
uW
iQ
wR
wE
q-P
q-Q q-W
q-R
q-T q-E
w-P
w-Q w-W
w-R
w-T w-E
e-P
e-Q e-W
e-R
e-T
e-E
eO
M
3
P
iR
M
w-E
M
M
e-E
q-E
Fig.13
Note
This scheme is a general example without shut-off valves or safety equipment. This does not replace the need for
on-site engineering. Determine the type of heat source, groundwater or geothermal probe during the engineering
process.
Equipment required
Pos.
Description
1 Heat pump
2
Heat pump control unit
3
3-way diverter valve for "heating/DHW heating"
4 Primary pump
5
Secondary pump
Preparing for installation
Hydraulic connections
5549 991 GB
Installation