Diagnosis General Hydraulic Scheme - Viessmann PLC VITOCAL 350-HT PRO Service Instructions For Contractors

Diagnosis
General hydraulic scheme
M
M
M
P
P
WW
M
CW
Fig. 23
Control extension residual heat (part no. ZK02826)
A
Control extension DHW heating
B
(part no. ZK02829)
Control extension AC/NC cooling
C
(part no. ZK02830)
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.
Required equipment
Pos. Designation
Heat pump
1
Heat pump control unit
2
3-way diverter valve, central heating/DHW heat-
3
ing
Primary pump
4
Secondary pump
5
36
M
P
M
P
P
M
M
M
Control extension well circuit/groundwater
D
(part no. ZK02828)
Control extension geothermal probe
E
(part no. ZK02827)
Waste heat
F
Pos. Designation
Outside temperature sensor
6
Safety assembly, secondary circuit
7
Expansion vessel
8
Geothermal probe
9
Geothermal probe manifold
qP
Safety assembly, primary circuit
qQ
Pressure switch, primary circuit
qW
Separating heat exchanger
qR
Flow switch
qT
Filter
qZ
Circulation pump
qU
Room temperature sensor
qI
M
3