System Example For Logamax Plus Gb162-50/65 With Dhw Heating; Unit And Direct Heating Circuit Without Mixer - Buderus Logamax plus GB162 Technical Manual

6 System examples
6.4.3 System example for Logamax plus GB162-50/65 with DHW heating via a 3-way valve kit, RC35
programming unit and direct heating circuit without mixer
PZ
KR
EK
Fig. 76 Circuit diagram for the system example (index of abbreviations
1)
Hydraulic balancing at the thermostatic valves
recommended
2)
Necessary where very quiet operation is required
The circuit diagram is only a schematic
illustration.
Information regarding all system examples
page 52 ff.
Brief description
• This hydraulic scheme with pump connection assembly
incl. 3-way valve kit is only suitable for the Logamax
plus GB162-50/65.
• DHW heating priority via 3-way diverter valve.
• Output-dependent pump UPER 25-80 integrated in
the pump connection assembly.
• An individual time channel is available for DHW via the
RC35 programming unit.
• Available residual head of the pump connection
assembly:
– at 3000 l/h = 200 mbar
• ΔT of the appliances at 3000 l/h:
– 50 kW = 14 K
– 65 kW = 19 K
78
FA
2x0,6 2
G-SU
VS
FW
VK
RS
RC35
FS
BUS
BC10
SV
MAG
RK
SMF
page 52)
Special design information
• Observe the pump curves of the individual appliances.
• Use a differential pressure controller for each line
where extremely quiet operation of radiator valves is
required.
• The gas condensing boiler requires no minimum water
circulation.
• The DHW temperature sensor FW is connected at the
terminal strip of the gas condensing boiler.
6 720 645 821 (2010/09) – Logamax plus GB162
1)
THV HK
2)
RDD
6 720 642 463-60.1il