12 About the units and options
Installation and operation manual
15
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452190-1D – 2020.10
1
3
5
(12.3 N·m)
2
12
About the units and options
12.1
About the outdoor unit
This installation manual concerns the VRV IV water-cooled system
air conditioner. The unit is full inverter driven, and can be used for
cooling, heat pump and heat recovery applications.
Model line up:
Model
Description
RWEYQ8~14
Heat recovery model for single or multi-use
Depending on the chosen type of unit, some functionality will or will
not exist. It will be indicated throughout this installation manual and
brought to your attention. Certain features have exclusive model
rights.
These units are intended for indoor installation and aimed for heat
pump applications including water to air and water to water
applications.
These units have (in single use) heating capacities ranging from 25
to 45 kW and cooling capacities ranging from 22.4 to 40 kW. When
multi combination is used, the capacity can go up to 135 kW for
heating and 120 kW for cooling.
The unit is designed to work in heating mode at indoor temperatures
from 15°C WB to 27°C WB and in cooling mode at indoor
temperatures from 21°C DB to 32°C DB or 14°C WB to 25°C WB.
The ambient temperature around the unit should be above 0°C DB
and below 40°C DB. Relative humidity around the unit should be
below 80%.
The water temperature at the water inlet of the unit must be between
10°C and 45°C. The lower limit is extendable down to –10°C
(heating operation mode) in case the brine type setting [2‑50] is set
for use with brine as heat source medium.
12.2
System layout
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
Low temperature (LT) Hydrobox unit
e
Branch selector box (BP*) (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
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
Branch selector unit (BS*)
d
Multi branch selector unit (BS*)
e
VRV DX indoor unit
f
Low temperature (LT) Hydrobox unit
g
Cooling only VRV indoor unit
h
High temperature (HT) Hydrobox unit
i
EKEXV kit
j
Air handling unit (AHU)
k
User interface
l
Wireless user interface
m
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
