34
System schema 8
The heat buffer is loaded during heating, the
cooling buffer during cooling. Each circuit has
its own switching valve for the selection of
heat/cold tank. It could have one for all. The
external heat request requests from buffer.
System schema 9
Heat generator and buffer tank with an
integrated hot water tank and optionally an
external heat source. Each circuit has its own
switching valve. It could also have one for all.
This scheme can also be used for a buffer tank
with fresh water module. The external heat
request requests from buffer tank.
Module
min. number
max. number
Heat generator
0
4
Buffer
1
1
Heating circuit / Cooling circuit
0
8
Hot water tank
1
1
Solar circuit
0
4
Ext. heat source
0
1
Ext. heat request
0
1
System schema 10
Heat/cooling source, buffer tank with
integrated hot water tank, cold buffer tank and
optionally an external heat source, external
heat request, switching valve for buffer and
heating/cooling circuits. In heating mode, the
heat buffer is loaded in the cooling mode, the
cooling buffer. Each circuit has its own
switching valve. It could also have one
collective switching valve for all circuits. This
scheme can also be used for a buffer tank with
fresh water module. The external heat request
requests from the heat buffer tank.
Module
min. number
max. number
Heat generator / Cold
generator
0
4
Buffer
2
2
Heating circuit / Cooling
circuit
0
8
Hot water tank
1
1
Solar circuit
0
4
Ext. heat source
0
1
Ext. heat request
0
1
Module
min. number max. number
Heat generator / Cold generator
0
4
Buffer
2
2
Heating circuit / Cooling circuit
0
8
Hot water tank
1
4
Solar circuit
0
4
Ext. heat source
0
1
Ext. heat request
0
1
