![background image](http://html1.mh-extra.com/html/daikin/rweyq10t9y1b/rweyq10t9y1b_installation-and-operation-manual_2459894030.webp)
10 About the system
Installation and operation manual
30
RWEYQ8~RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452190-1A – 2017.04
For the user
10
About the system
The indoor unit part of VRV IV heat recovery system can be used for
heating/cooling applications. The type of indoor unit which can be
used depends on the outdoor units series.
NOTICE
For future modifications or expansions of your system:
A full overview of allowable combinations (for future
system extensions) is available in technical engineering
data and should be consulted. Contact your installer to
receive more information and professional advice.
10.1
System layout
Heat recovery system
k
m
e
c
k
l
e
e
e
f
h
b
a
k
l
c
c
k
k
k
j
c
e
i
k
k
c
d
1
3
2
5
4
e
g
c
a
Unit
b
Refrigerant piping
c
BS unit
d
Multi BS unit
e
VRV DX indoor unit
f
LT Hydrobox unit
g
Cooling only VRV indoor unit
h
HT Hydrobox unit
i
EKEXV kit
j
AHU
k
User interface
l
Wireless user interface
m
Water system connection
Heat pump system
g
c
g
g
h
g
g
c
c
c
d
f
e
i
j
b
a
a
Unit
b
Refrigerant piping
c
VRV DX indoor unit
d
LT Hydrobox unit
e
BP box (required to connect Residential Air (RA) or Sky Air
(SA) direct expansion (DX) indoor units)
f
Residential Air (RA) direct expansion (DX) indoor units
g
User interface
h
Wireless user interface
i
Cool/heat changeover remote control switch
j
Water system connection
Water system
c
g
d
f
e
b
a
a
Unit
b
Connection to refrigerant system
c
Water piping
d
Dry cooler
e
Brine loop
f
Closed cooling tower
g
Boiler
11
User interface
CAUTION
Never touch the internal parts of the controller.
Do not remove the front panel. Some parts inside are
dangerous to touch and appliance problems may happen.
For checking and adjusting the internal parts, contact your
dealer.
This operation manual will give a non-exhaustive overview of the
main functions of the system.
Detailed information on required actions to achieve certain functions
can be found in the dedicated installation and operation manual of
the indoor unit.
Refer to the operation manual of the installed user interface.