Installation Manual

20 English
Heat pump system
When multiple indoor units are connected to 1 outdoor unit:
Give the authority to choose cooling, heating, or auto to 1 of these remote controllers.
c cc
e
c
d
bbbb
a
Cool Cool
a Outdoor unit
b Indoor unit
c Remote controller
d Changeover master
e Changeover mode follower
• For the remote controller without cooling/heating selection authority, the operation
modes that can be selected are limited.
Heat recovery system
When multiple indoor units are connected to the same port of a branch selector unit:
Give the authority to choose cooling, heating, or auto to 1 of these remote controllers.
c c
bb
c
d
c
b b
d d
a
e f*
e e
Heat Heat
Heat Heat
a Outdoor unit
b Indoor unit
c Remote controller
d Branch selector unit
(This unit switches between cooling
and heating.)
e Changeover master
f Changeover mode follower
* The screen of the remote controller with
no cooling/heating selection authority
when the remote controller with cooling/
heating selection authority is in “Auto”
mode and has selected Heat operation
(auto heating)
01_EN_EM19A026_IM.indd 20 2020/09/08 14:21:04