Mechanical Installation
Vertiv | Liebert CRD10 | User Manual
43
NOTES:
•
For bottom piping, before brazing the compressor discharge pipe and liquid pipe, follow the
requirement labeled on the copper pipe; cut the copper pipe using a cutter (a little bit of the compressor
lubricating oil may leak); however, do not braze-weld the copper cap on the seal directly as it may result
in heating of the oil following that may catch fire.
• The exposure time of the system pipes should not exceed 15 minutes. If exposed for too long, it will
lead to the PVE refrigeration oil absorbing moisture from the air and contaminating the refrigerant
system. It may result in an adverse effect on the life of the key components and the stability of the
system operation.
3.8
Installing Liquid Line Solenoid Valve Kit and Low Ambient Kit
3.8.1
Installing Solenoid valve Kit (for site installation)
In order to prevent the opening of the pipe, it is recommended that the solenoid valve be installed outside
the ball valve of the liquid pipe. After the 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 solenoid kit, refer to Chapter 4-
‘Electrical Installation’).
NOTE: The solenoid valve is a standard accessory and it needs to be installed for all installations. The
solenoid valve is recommended to be installed horizontally, and the valve body must be upward.
Following is the procedure for installing the solenoid valve in the liquid pipe:
1.
The solenoid valve needs to be installed to the liquid pipe. The solenoid valve must be as close to the
indoor unit as possible, and the distance from the solenoid valve to the indoor unit pipe does not
exceed 2m(6.6ft.), as shown in Figure 3-19. The valve body and coil of the solenoid valve are
separated when the valve is shipped out.
Figure 3-19 Installation position of Solenoid valve and pipe dimensions
Condenser
CRV
Solenoid Valve
Indoor
Outdoor
Hot Gas pipeline
Refrigerant flow
16mm(5/8in.) or
18mm(3/4in.)
According to Table3-6
12.7mm(1/2in.) or
16mm(5/8in.)
According to Table3-6
Max 2m
(6.6ft.)
Liquid pipeline
Refrigerant flow
