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System schemes
6 720 645 817 (2010/09)
4
1 System schemes
1.1 System scheme 1: unmixed heating circuit, low loss header
Hydraulic scheme with controller (schematic diagram)
Fig. 1
AF Outside temperature sensor
CUx Boiler control unit
FW 100 Weather-compensated controller
HP Heating circuit pump (primary circuit)
IPM 1 Load switching module for one heating circuit
P Heating circuit pump (secondary circuit)
VF Common flow temperature sensor
1 Module position: on the heat source
3 Module position: on the wall
Heating system components
Suprapur gas condensing boiler for balanced flue
operation
One unmixed heating circuit
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).
Function description
The unmixed heating circuit with low loss header is
regulated by an FW 100 weather-compensated
controller. This always requires the IPM 1 load switching
module. A 2-wire BUS system enables communication
between the boiler control unit, the controller and the
load switching module.
6 720 643 417-02.1O
IPM 1
AF
FW 100
3
CUx
1
VF
T
T
P
3
Suprapur
KBR 120-280
HP
4


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