Installation manual

Air Cooled Models
28
Figure 19 Air cooled model general arrangement diagram
NOTE
Two refrigeration circuits required - Single circuit shown only for clarity
Table 15 Refrigerant control settings psi (kPa)
Model Refrigerant Type
Low Pressure
Cut Out
Low Pressure
Cut In
High Pressure
Cut Out
Fan Speed Control R-22 15 (103.4) 35 (241.3) 360 (2482)
Lee-Temp R-22 20 (137.9) 65 (448.2) 360 (2482)
Condenser Coil
Schrader
Valve
Fusible
Plug
Evaporator Coil
Inverted traps* on discharge and return
lines to extend above base of coil by a
minimum of 7-1/2" (190mm)
Traps*
every 25ft.
(7.6m) of
rise
Expansion
Valve
Solenoid
Valves
Sight
Glass
Liquid
Return
Muffler
Shutoff*
Valve
Sensing
Bulb
External
Equalizers
Hot Gas
Bypass
Cylinder
Unloaders
(optional)
Hot Gas
Bypass
(optional)
Filter
Dryer
Muffler**
Hot Gas
Discharge
Service
Valves
Compressor
Single Refrigeration Circuit Shown
Factory Piping
Field Piping
Optional Piping
* Components are not supplied by
Liebert but are recommended for
proper operation and maintenance
** Components supplied by Liebert and
must be field-installed (DH/VH and DE/VE
245A, 290A and 380A models only)
DPN000525 Rev0
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