Emerson ITR Manuel D’Utilisation

A co-axial condenser provides ample capacity to handle the heat rejection needs of the system while 

using a minimum of liquid and low total pressure drop.

Head pressure operated regulating valves accurately control the condensing temperature and main-

tain system capacity for various entering liquid flow rates and temperatures. Two-way valves with 

bypass are standard.

Three-way valves provide accurate control of condensing temperature and thus maintain constant 

system capacity while also keeping the condenser water flow rate constant.

The high pressure option for the condenser circuit consists of a regulating valve and a condenser 

rated at 350 psig (2413 kPa) water-pressure. This option is required in applications with large static 

head pressures.

A compressor crankcase heater is available to prevent the migration of refrigerant to the compressor 

during off cycles.

The hot gas reheat assembly consists of a three-way directional solenoid operated valve and a hot gas 

reclaim coil.

This coil replaces the standard copper tube coil to provide improved resistance to corrosion. This 

option must be specified whenever a GLYCOOL or Dual Cooling Source system is applied to a cooling 

tower loop or other open water system.

Factory charged and sealed, the water-cooled condensing unit is ready to be installed quickly and eas-

ily. The counter-flow coaxial condenser with two-way or three-way regulating valve designed for 150 

psi (1034.3 kPa) is matched to the heat rejection requirements of the compressor for a variety of flow 

rates and fluid temperatures.
Condensing unit has a hot gas bypass standard feature that bypasses hot gas around the compressor 

directly to the suction side of the compressor to provide capacity control and reduce compressor 

cycling. System includes liquid injection valve to maintain proper suction superheat.