Vaillant VR 71 - 4.8 Combinations of basic system diagram and configuration of functional modules

0020288151_04 Operating and installation instructions 33
4.8 Combinations of basic system diagram and configuration of functional modules
You can use the table to check the selected combination of the basic system diagram code and the configuration of func-
tional modules.
Basic
system
diagram
code:
System
Without
FM5,
without
FM3
With
FM3
With FM5 With
FM5
+
Max. 3
x FM3
Configuration
1 2 1 2 3 6
Solar domestic
hot water gener-
ation
Solar heating
support
For conventional heat generators
1 Gas-/oil-fired boiler x
x
1)
x x – –
x
1)
x
1)
x
Gas-/oil-fired boiler, cascade – – – – – –
x
1)
– x
2 Gas-/oil-fired boiler –
x
1)
– – x x
x
1)
– x
Gas-/oil-fired boiler, cascade – – – – – –
x
1)
x
1)
x
For heat pump systems
8 Monoenergetic heat pump sys-
tem
x
x
1)
x x – –
x
1)
x
1)
x
Hybrid system x – – – – – – – –
9 Hybrid system –
x
1)
– – – –
x
1)
– x
Cascade of heat pumps – – – – – –
x
1)
– x
10 Mono-energy heat pump sys-
tem with heat exchanger
2)
x
x
1)
– – – –
x
1)
– x
Hybrid system with heat ex-
changer
2)
x
x
1)
– – – –
x
1)
– x
11 Mono-energy heat pump sys-
tem with heat exchanger
2)
x
x
1)
x x – –
x
1)
– x
12 Hybrid system x
x
1)
– – – –
x
1)
– x
13 Hybrid system with heat ex-
changer
2)
–
x
1)
– – – –
x
1)
– x
16 Hybrid system with heat ex-
changer
2)
–
x
1)
– – – –
x
1)
x
1)
x
Cascade of heat pumps – – – – – –
x
1)
x
1)
x
Mono-energy heat pump sys-
tem with heat exchanger
2)
x
x
1)
– – – –
x
1)
x
1)
x
x: Combination possible
–: Combination not possible
1) Buffer management possible
2) E.g. VWZ MWT