System Example For The Logamax Plus Gb162-15/25/35 With Low Loss Header; And Rc25 Programming Units) - Buderus Logamax plus GB162 Technical Manual

6.3.5 System example for the Logamax plus GB162-15/25/35 with low loss header, one heating
circuit without mixer, one underfloor heating circuit with mixer and DHW heating via cylinder
primary pump (maximum equipment level with the RC35 and RC25 programming units)
FS
SV
2x0,6
3x1,5
SU
2x0,6
BC10
2x0,6
3x1,5
VS RS
VK RK
G-KS
SMF
Fig. 69 Circuit diagram for the system example (index of abbreviations
The circuit diagram is only a schematic
illustration.
Information regarding all system examples
page 52 ff.
Brief description
• Control of the low loss header (separation) and one
heating circuit without mixer (HK1) via WM10 low loss
header module.
• Control of one underfloor heating circuit with mixer
(HK2) via MM10 mixer module.
• Control of DHW heating via the cylinder primary pump
function.
• Heating circuit can be controlled in
weather-compensated mode, room
temperature-dependent mode or
weather-compensated mode with room temperature
hook-up.
• Output-dependent operation of the boiler pump;
adjustment at the RC35 programming unit (setting 0).
• Separate DHW heating with the Logamax plus via
cylinder primary pump on the secondary side of the
hydraulic separation; connection of the cylinder primary
pump to the terminal strip of the Logamax plus
(terminal marking PS).
6 720 645 821 (2010/09) – Logamax plus GB162
PZ
FA
2
KR AW
2
2
2
BUS
2 EZ
230 V AC
50 Hz
FW
MAG
EK
FK
SA
WH
BUS
2
2x0,6
HK1
WM10
BUS
2
3x1,5
230 V AC /50 Hz
KR PS
(HS...)
RH
page 52)
Special design information
• DHW heating via the cylinder primary pump enables
parallel operation (simultaneous cylinder heating and
heating mode) or DHW priority (either cylinder heating
or heating mode); to be adjusted at the RC35
programming unit.
• Optional DHW via an individual time channel including
actuating a DHW circulation pump and thermal
disinfection.
• An individual time channel is feasible for DHW heating
in combination with the RC35.
• Size the flow and return lines to the low loss header for
maximum boiler output.
• Determine the size of the low loss header in
accordance with the maximum permissible system flow
rates.
• In combination with a low loss header, the integral
pump in the GB162 must be controlled subject to
output (setting 0 at the RC35 programming unit).
System examples
RC35
RC25
(RC25)
(RC35)
THV
HK2
TWH
MM10
FV2
3x1,5
KR
KR
230 V AC
PH1 PH2 50 Hz
SH2
(HSM...)
(HKV 3/...)
VH
6 720 642 463-54.1il
6
2
2x0,6
BUS
2
71