System Example For A Single Boiler System, Logamax Plus Gb162-25 T40S With Rc25; Or Rc35 Programming Unit For One Heating Circuit With Integral Dhw Heating - Buderus Logamax plus GB162 Technical Manual

6 System examples
6.3.2 System example for a single boiler system, Logamax plus GB162-25 T40S with RC25 or RC35
programming unit for one heating circuit with integral DHW heating
FS
SV
FW
FEK
SU
WS
FE
3)
EK
SMF
Fig. 66 Circuit diagram for the system example (index of abbreviations
A Heating circuit without mixer; radiators
B Heating circuit without mixer; underfloor heating system
directly downstream (transferable output
page 58): with this hydraulic circuit, observe the system
pressure drop and residual head of the integral pump.
1)
If the system is regulated via the RC35 programming unit
in weather-compensated mode
2)
Safety valve 8-10 bar
3)
Pressure reducer may be required
4)
It is recommended to balance the system hydraulically via
the thermostatic radiator valves which can be preset
5)
Connection of the temperature limiter in the Logamax plus
GB162
The circuit diagram is only a schematic
illustration.
Information regarding all system examples
page 52 ff.
68
1)
FA
2
2x0,6
Logamatic
2
3x1,5
RC25
Netz
RC35
2
2x0,6
AW
VK
VK
2)
RK
RK
tab. 24,
4) 4)
THV/SA THV/SA
HK1 HK1
VK
RK
A A
page 52)
Brief description
• Logamax plus with modulating operation and integral
stratification cylinder
• Room temperature-dependent control as standard
application in conjunction with the RC25 or RC35
programming unit. The FA auxiliary module for the
RC35 programming unit also enables
weather-compensated control.
• The modulating operation of the Logamax plus GB162
is regulated by the universal burner control unit
UBA3.5. The UBA3.5 also regulates the DHW priority
for the stratification cylinder via the integral 3-way
diverter valve. A time profile can be selected in
connection with the RC35 programming unit for
heating operation in constant standby mode for DHW
heating (24 hour mode). Alternatively, DHW heating
can be linked to the times selected for heating
operation. It is then only possible during the periods
selected for heating or standby mode.
• An individual time channel is feasible for DHW heating
in combination with the RC35.
Special design information
• DHW heating via stratification cylinder, performance
= 1.5.
factor N
L
• Stainless steel DHW cylinder with 40 l capacity.
• The function of a DHW circulation pump is not
supported by the appliance software.
• Maximum drinking water hardness 21°dH.
• Copper-soldered plate heat exchanger inside the
stratification cylinder.
6 720 645 821 (2010/09) – Logamax plus GB162
THV/SA THV/SA
5) 5)
TWH TWH
HK1 HK1
B B
6 720 642 463-51.1il