System Example For The Logamax Plus Gb162-15/25/35 With Solar Central Heating Backup And One Heating Circuit; With Mixer - Buderus Logamax plus GB162 Technical Manual

6.3.7 System example for the Logamax plus GB162-15/25/35 with solar central heating backup and one
heating circuit with mixer
FSK
ÜS
Logasol
SKN3.0
SKS4.0
CPC6
Logasol
CPC12
KS0105
VK RK
MAG
PSS
Fig. 71 Circuit diagram for the system example (index of abbreviations
1)
Hydraulic balancing at the thermostatic valves/zone valves
recommended
2)
On site
The circuit diagram is only a schematic
illustration.
Information regarding all system examples
page 52 ff.
Brief description
• Central heating backup via buffer cylinder with solar
DHW heating.
• DHW reheating via integral 3-way diverter valve with
priority operation.
• Control of solar DHW heating via FM443 solar module.
• External heat recognition via boiler sensor of the
Logamatic 4121 control unit. If sufficient external heat
is available in the buffer cylinder, the internal pump and
the appliance burner will stop.
• The heating circuits are regulated via the 3-way mixer.
6 720 645 821 (2010/09) – Logamax plus GB162
AW
EK
WWM
Logalux
P750 S
FW
FSS
FS
SV
BUS
SU
230 V AC
50 Hz
BC10
2)
MAG
VS RS
2
VK RK
2x0,6
FK
SA
WHY 80/60
SMF
WHY 120/80
2
2x0,6
2
3x1,5
2
2x0,6
page 52)
Special design information
• In conjunction with a low loss header, the pump inside
the appliance must be controlled subject to output
(setting 0).
• The buffer cylinder will also be used for central heating
via the solar module and the HZG-Set if the buffer
cylinder temperature is higher than the return
temperature.
• The Logamatic 4121 enables an individual time
channel for DHW heating.
• Installing a Taco setter upstream of the low loss header
is recommended.
• The low loss header "across" is unsuitable for this
hydraulic layout. Use the low loss headers WHY 80/60
or WHY 120/80.
• The DHW temperature sensor FW is connected at the
terminal strip. The Logamatic 4121 control unit enables
two heating circuits with mixer.
System examples
Logamatic 4121
FM443
FA
2
2x0,6
2 TWH
3x1,5
2
FV2
2x0,6
KR
PH2
SH2
(HSM...)
2
4x1,5
≈
6 720 642 463-56.1il
6
1)
ZV (THV)
HK
73