Daikin VRV 5 REYA8A7Y1B Installer And User Manual page 26

5 | About the system
Installer and user reference guide
26
Depending on the type of outdoor unit which is chosen, some functionality will or
will not exist. It will be indicated throughout this operation manual when certain
features have exclusive model rights or not.
The complete system can be divided into several sub-systems. These sub-systems
have 100% independence regarding the selection of cooling and heating operation,
and each consists of one individual branch set of a BS unit, and all indoor units
connected downstream.
INFORMATION
The following figure is an example and may NOT completely match your system
layout
a b
g
a Heat recovery outdoor unit
b Branch selector (BS)
c VRV direct expansion (DX) indoor unit
d Remote controller in normal mode
e Remote controller in alarm only mode
f Remote controller in supervisor mode (mandatory in some situations)
g iTM (optional)
h Option PCB (optional)
Refrigerant piping
Transmission and user interface wiring
c c
d d
f
h h
c
d
e
h
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07