Notes on the documentation 2
0020243831_00 System assistant
5
2.5
Refrigerant-split heat pump systems
Basic sys-
tem dia-
gram
Heat generator
Heat
source
Heating circuits
Additional
functions
System
control
Special equipment
Regu-
lated
Non-reg-
ulated
0020253231
aroTHERM VWL ... AS
uniTOWER VWL ... IS
X
−
1
X
–
Buffer cylinder
Outdoor temperature
sensor
0020232127
aroTHERM VWL ... AS
uniTOWER VWL ... IS
X
−
1
X
X
As of multiMATIC
VRC 700/5
Buffer cylinder
As of the VR 920 commu-
nication unit
Circulation pump
Outdoor temperature
sensor
