Vaillant sensoCOMFORT VRC 720/2 Manual De Uso E Instalación página 23

4.3 System with FM5 and FM3 functional modules
VRC 720
eBUS
Systems with more than two mixed heating circuits require the FM5 functional module.
The system may comprise the following:
–
Maximum 1 x FM5 functional module
–
Maximum 3 x FM3 functional modules, in addition to the FM5 functional module
–
Maximum 4 x VR 92 remote controls, which can be installed in each heating circuit
–
Maximum 9 x heating circuits, which you achieve using 1 x FM5 functional module and 3 x FM3 functional modules
4.4 Potential application for the functional modules
4.4.1 FM5 functional module
Each configuration corresponds to a defined connection assignment of the FM5 (→ Chapter 4.5) functional module.
Configura- System property
tion
1 Solar heating and/or domestic hot water support with two solar cylinders
2 Solar heating and/or domestic hot water support with one solar cylinder
3 3 x mixed heating circuits
6 allSTOR multi-functional buffer cylinder and domestic hot water station
4.4.2 FM3 functional module
If a FM3 functional module is installed, the system has one mixed and one non-mixed heating circuit.
The potential configuration (FM3) corresponds to a defined terminal assignment for the FM3 (→ Chapter 4.6) functional
module.
0020287900_01 sensoCOMFORT Operating and installation instructions
FM5 (VR 71)
VR 92
FM3 (VR 70)
Mixed heat-
ing circuits
Max. 2
Max. 3
Max. 3
Max. 3
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