6 Chapter 2 Mechanical Installation
DM Series 16kW Air Conditioner User Manual
Follow the design drawings strictly when installing the equipment, and reserve the space for maintenance. The
manufacturer
’s engineering dimensions drawings can serve as a reference.
2.3 System Installation Arrangement
2.3.1 General Arrangement
The general arrangement of Liebert_DM 16kW air conditioner is shown in Figure 2-6.
Scroll compressor
Service valve
Suction line
Discharge line
Ball
valves
Sensing bulb
Evaporator coil
Dehum solenoid valve
Thermal expansion valve
Sight glass
Filter drier
Solenoid valve
High pressure switch
Charging port
Low pressure switch
Condenser coil
Check valve
Distributor
Traps(every 7.5m
of vertical lift)
#1 circuit only
Figure 2-6 General arrangement diagram of air-cooled series
Note
1.
: Factory piping.
2.
: Field piping (by others).
3. *: Components are not supplied by Emerson but are recommended for proper circuit operation and maintenance.
4. +: Components are required when the equivalent length exceeds 30m.
2.3.2 System Installation Sketch Map
The installation mode of air-cooled series unit is shown in Figure 2-7 and Figure 2-8.
Note
1. If the condenser is installed higher than the compressor, an external back bend should be fitted to the suction line and liquid
return line of the condenser, so as to prevent the liquid refrigerant from flowing back when the condenser stops.
2. The top end of the back bend must be installed higher than the highest copper pipe of the condenser.
