Vertiv Liebert CRV Plus - Page 41

Vertiv | Liebert CRV+ | User Manual 31
Installing Pipe Extension Kit (for site installation)
There are instances where the one-way equivalent length of the pipe exceeds 30m. Or suppose the
vertical distance between the condenser and the indoor unit exceeds the value in the first table in the
following Listing 2.6.
Listing 2.6
Vertical distance between the Indoor and Outdoor unit
Positioning of the Outdoor Unit Height
Outdoor unit is higher than the Indoor unit Maximum : + 30m
Outdoor unit is lower than the indoor unit Minimum : - 8m
Equivalent length of the partial components
Outer diameter (OD) of the liquid pipe
(inches)
Equivalent length (meters)
90° bend 45° bend T Type 3-way
3/8 0.21 0.10 0.76
1/2 0.24 0.12 0.76
5/8 0.27 0.15 0.76
3/4 0.3 0.18 0.76
7/8 0.44 0.24 1.1
1-1/8 0.56 0.3 1.4
A trap must be installed every 7.5m of the vertical distance. Please consult Vertiv for such
specific inquiry and installation.
There is no necessity of cutting the indoor unit pipes while installing the solenoid valve.
After t
he entire system is installed, open the ball valve to keep the pressure and carry out the vacuum
operation, thereby avoiding the moisture absorption of the compressor refrigeration oil, Thus, it accounts
for operational safety and also extends the service life of the compressor (For electrical connections
related to the pipe extension kit, refer to the Electrical Installation section).
Take a look at the procedure for installing the Solenoid valve in the liquid pipe:
The solenoid valve must be as close to the indoor unit as possible. The valve body and coil of the
solenoid valve are separated when the valve is shipped out.
1) Mount the valve body horizontally in the refrigerant pipe as shown in Figure 2-23. Pay attention to
the arrow on the valve body as the arrow indicates the flow direction of the refrigerant in the valve.
Ensure that the arrow points towards the indoor unit.