Installation Instructions

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