4 About the units and options
Installer and user reference guide
10
RWEYQ8~1 RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1 – 2017.04
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
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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
4.5
Combining units and options
4.5.1
About combining units and options
NOTICE
To be sure your system setup (unit+indoor unit(s)) will
work, you have to consult the latest technical engineering
data for VRV IV water-cooled.
The VRV IV water cooled system can be combined with several
types of indoor units and is intended for R410A use only.
For an overview which units are available you can consult the
product catalogue for VRV IV.
An overview is given indicating the allowed combinations of indoor
units and outdoor units. Not all combinations are allowed. They are
subject to rules (combination between outdoor-indoor, single outdoor
unit use, multiple outdoor unit use, combinations between indoor
units, etc.) mentioned in the technical engineering data.
4.5.2
Possible combinations of indoor units
In general following type of indoor units can be connected to a VRV
IV heat recovery system. The list is non-exhaustive and is depending
on both outdoor unit model and indoor unit model combinations.
For more information, see
"5.3.5 Single outdoor units and standard
multi-outdoor-unit combinations" on page 16
▪ VRV direct expansion (DX) indoor units (air-to-air applications).
▪ HT (high temperature) Hydrobox (air-to-water applications): HXHD
series (heating only).
▪ LT (low temperature) Hydrobox (air-to-water applications):
HXY080/125 series.
▪ AHU (air-to-air applications): EKEXV-kit+EKEQM-box required,
depending on the application.
▪ Comfort air curtain (air-to-air applications): CYVS (Biddle) series.
4.5.3
Possible combinations of outdoor units
Possible standalone units
RWEYQ8
RWEYQ10
RWEYQ12
RWEYQ14
Possible standard combinations of units
RWEYQ16~42 consists of 2 or 3 RWEYQ8~14 units.
RWEYQ16 = 8
