18
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Piping installation
Installer and user reference guide
101
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
NOTICE
Applicable legislation on
fluorinated greenhouse gases
requires that the refrigerant
charge of the unit is indicated both in weight and CO
2
equivalent.
Formula to calculate the quantity in CO
2
equivalent tonnes:
GWP value of the
refrigerant × total refrigerant charge [in kg] / 1000
Use the GWP value mentioned on the refrigerant charge label.
2
Fix the label on the inside of the outdoor unit near the gas and liquid stop
valves.
18.6 Connecting water piping
18.6.1 About connecting the water piping
Before connecting the water piping
Make sure the outdoor and indoor units are mounted.
Typical workflow
Connecting the water piping typically consists of the following stages:
1
Connecting the water piping of the outdoor unit.
2
Filling the water circuit.
3
Insulating the water piping.
18.6.2 Precautions when connecting the water piping
INFORMATION
Also read the precautions and requirements in the following chapters:
▪
General safety precautions
▪
Preparation
18.6.3 To connect the water piping
a
b
a
Cooling water outlet
b
Cooling water inlet
Consult
"18.2.2 Water circuit requirements"
78] for the correct tightening
torque of the water piping connections.