3 About the units and options
Installation and operation manual
6
RWEYQ8~RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452190-1A – 2017.04
Accessory pipes
(mm)
HP
Øa
Øb
Øc
Ød
Gas pipe
▪ Front connection
(a)
Øa
Øb
▪ Top connection
Øc
Ød
8
25.4
25.4
25.4
19.1
10
22.2
12
28.6
14
High pressure/Low
pressure gas pipe
▪ Front connection
(a)
Øa
Øb
▪ Top connection
Øc
Ød
8
25.4
25.4
25.4
15.9
10
19.1
12
14
22.2
(a)
Braze the straight accessory pipe onto the L-shaped
accessory pipe in order to get the correct diameter to
connect the field pipes (for front connection).
2.3
To remove the transportation stay
NOTICE
If the unit is operated with the transportation stay attached,
abnormal vibration or noise may be generated.
The compressor transportation stay must be removed. It is installed
under the compressor leg in order to protect the unit during
transport. Proceed as shown in the figure and procedure below.
1
Remove the bolt.
2
Lift the insulation to access the compressor mounting bolt.
3
Slightly loosen the mounting bolt.
4
Remove the transportation stay as shown in the figure below.
5
Tighten the mounting bolt to 12.3 N•m of torque.
2
2
3
5
1
(12.3 N·m)
3
About the units and options
3.1
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.
