System Example For Single Boiler System; Separation) - Buderus Logamax plus GB162 Technical Manual

6.3.3 System example for single boiler system, Logamax plus GB162-15/25 and GB162-25 T40S with RC35
programming unit for one heating circuit without mixer and one heating circuit with mixer with the
same time channel (as option with system separation)
FS
FA
2
2x0,6
BC10
VS
FW
Fig. 67 Circuit diagram for the system example (index of abbreviations
1)
It is recommended to balance the system hydraulically via
the thermostatic radiator valves (zone valves), which can
be preset
2) Maximum output 8 kW at ΔT = 10 K when using the
system separation set
3)
Opened at the factory for isolating the pumps
4)
Alternatively system separation is possible
5)
Preset at the factory
6)
On site
The circuit diagram is only a schematic
illustration.
Information regarding all system examples
page 52 ff.
Brief description
• When combined with the Logamatic EMS the
hydraulics are suitable for the Logamax plus
GB162-15/25.
• The output of the underfloor heating circuit is limited to
50 % of the appliance output.
• At the factory, the distribution valve is set to 1/3 of the
water volume to the underfloor heating system and 2/3
to the radiator heating system. Generally (maximum
50 % underfloor heating; underfloor heating 40/30 °C;
radiators 70/50 °C), these systems will not require
further balancing.
• DHW heating with this kind of hydraulic scheme can
only be heated via a 3-way diverter valve.
• An individual time channel is feasible for DHW heating
in combination with the RC35.
6 720 645 821 (2010/09) – Logamax plus GB162
RC35 MM10
SV
SU
MAG
RS
SMF
2
4x1,5
2
3x1,5
TWH
2
3x1,5 FV2
3)
PH2
KR SH2
SV
2)
6)
MAG
1/3
Special design information
• Only the RC35 programming unit and the MM10 mixer
module will be required.
• Enable the mixer circuit for the underfloor heating
system (HK2).
• Also enable the radiator heating circuit without mixer
(HK1).
• Ensure that the same time channel is set for the heating
circuit without mixer as for the heating circuit with
mixer.
• The fully wired AT90 for the Logamatic 4000 is used as
a temperature limiter for the underfloor heating system
(prod. no 8 015 520 0).
• Uncheck DHW at the BC10 base controller if no DHW
cylinder is used.
• With system separation, an underfloor heating system
of up to 8 kW can be operated with ΔT = 10 K.
It is not possible to use only the heating circuit with mixer.
The time window for the heating circuit without mixer must
be the same or longer than that of the circuit with mixer.
System examples
1)
THV/SA
1)
THV/SA
HK2
4)
5)
2/3
page 52)
6
HK1
6 720 642 463-52.1il
69