Installation Instructions

System schemes
6 720 645 817 (2010/09)
18
1.8 System scheme 8: two mixed heating circuits, two DHW circuits, low loss header
Hydraulic scheme with controller (schematic diagram)
Fig. 8
AF Outside temperature sensor
CUx Boiler control unit
FW 500 Weather-compensated controller
HP Heating circuit pump (primary circuit)
IPM 2 Load switching module for two heating circuits
LP
1,2
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 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
• Two DHW circuits
• 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.
6 720 643 417-09.1O
IPM 2
AF
LP1 LP2
TT
M
M1
P1
MF1
TB
TT
M
M2
P2
MF2
TB
IPM 2
3
3
VF
1
CUx
FW 500
3
Suprapur
KBR 120-280
HP
ZP
SF
ST ...
ZP
SF
ST ...