Introduction

Figure 2 Typical system configuration—indoor unit and outdoor condenser and field piping

Inverted trap on discharge & liquid lines to extend above base of coil

Check

Relief

Service

Valve

Valve

 

Valve Liquid Return

 

 

 

by a minimum of 7-1/2” (190mm).

Fusible

Plug

Condenser Coil

(Fan Speed

and VFD)

Fan Speed and VFD

Lee-Temp Receiver

Condenser Coil (Lee-Temp)

Hot Gas

Lee-Temp Discharge

Head Pressure Control Valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Liquid

28-42kW Digital Solenoid Valve

 

Sensing

53-70kW Digital

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bulb

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Solenoid Valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Suction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Evaporator Coil

*Traps every 25ft (7.6m) of rise

Service

Valve Service

Compressor Valve

Check

Valve

Expansion Solenoid Sight Glass

Valve Valve

External

Field-installed relief valve(s) required

for 50 Hz EU CE units rated maximum

Equalizer

480 PSIG (33 Bar).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Isolation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pitch horizontal hot gas piping

 

 

 

 

 

 

 

 

 

 

 

 

 

 

valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1/2" per 10 ft. (42mm per 10m)

Hot Gas Discharge

 

 

 

in direction of refrigerant/oil flow.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Filter Dryer

Liquid Return

 

 

* Isolation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

valve

 

Factory Refrigerant Piping

Field Refrigerant Piping

Service/Schrader (Access) Connection No Valve Core

Service/Schrader (Access) Connection With Valve Core

*Components are not supplied by Liebert, but are recommended for proper circuit operation and maintenance.

Note: Schematic representation shown . Do not use for specific connection locations .

DPN000798

Two refrigeration circuits provided . Single refrigeration circuit shown for clarity .

Rev. 2

3

Page 7
Image 7
Liebert 205 251, 104 165, 308 415, 1010, 510 616 830 manual Fan Speed and VFD, Lee-Temp Discharge