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System schemes
6 720 645 817 (2010/09)
12
1.5 System scheme 5: two mixed heating circuits, one DHW circuit, low loss header
Hydraulic scheme with controller (schematic diagram)
Fig. 5
AF Outside temperature sensor
CUx Boiler control unit
FW 200 Weather-compensated controller
HP Heating circuit pump (primary circuit)
IPM 1 Load switching module for one heating circuit
IPM 2 Load switching module for two heating circuits
LP Cylinder primary pump
M
1,2
3-way mixer
MF
1,2
Mixer circuit temperature sensor
P
1,2
Heating circuit pump (secondary circuit)
SF Cylinder temperature sensor
ST ... DHW cylinder
TB
1,2
Temperature limiter
VF Common flow temperature sensor
ZP DHW circulation pump
1 Module position: on the heat source
3 Module position: on the wall
Heating system components
Suprapur gas condensing boiler for balanced flue
operation
Two mixed heating circuits
DHW cylinder
Weather-compensated controller
Features
Generally, we would recommend the installation of a
low loss header on site to ensure reliable transfer of
the required heating output.
The FW ... weather-compensated controller is
preferred for its higher utilisation of condensing
technology.
Determine the system water content and select a
corresponding expansion vessel (Æ page 39).
Install a mechanical safety limiter (TB 1) in
accordance with the underfloor heating system
manufacturer's instructions.
Install safety assembly to DIN 1988.
Function description
The heating circuits are regulated by an FW 200
weather-compensated controller. This always requires
the IPM 1 and IPM 2 load switching modules. A 2-wire
BUS system enables communication between the boiler
control unit, the controller and the load switching
modules.
6 720 643 417-06.1O
AF
T
T
M
M2
P2
MF2
TB2
LP
VF
1
3
IPM 1
CUx
FW 200
3
3
IPM 2
ZP
SF
ST ...
Suprapur
KBR 120-280
HP
T
T
M
M1
P1
MF1
TB1
12


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