Panasonic WH-SDF03E3E5 Series Design Handbook page 114

Example 10
Heat pump cascade with hydraulic isolation of the heating circuits by means of buffer tank
Closed-loop control of cascade operation by means of an external controller,
taking into account operating time, redundancy and peak load.
OPEN OPEN
CLOSE CLOSE
N N
HEAT HEAT
COOL COOL
N N
L L
N N
OPEN OPEN
CLOSE CLOSE
N N
OPEN OPEN
CLOSE CLOSE
Schematic illustration – relevant standards
and guidelines must be observed!
114
Aquarea air / water heat pump – design handbook 07 / 2014