INSTALLATION
18
System scheme for heat pumps cascade
1
HYDRONIC UNIT B
2
External sensor (option)
3
Temperature probe for cascade connection (accessory)
1
1
1
1
2
3
9
Only units of the same model can be cascaded.
2.10 Hydraulic connections
The size and positioning of the hydraulic connections of
B
HYDRONIC UNIT B
are shown in the following table.
Before installation, it is advisable to wash all the pipes of the sys-
tem thoroughly to remove any processing residues.
MODEL 5 - 7
A
System return
B
System delivery
C
Discharging
40
60
466
356
87
A
B
C
