2 Product description
2.1 Overview
Figure 1. Halton Rex Expander
Compact CAV/VAV chilled beam with 4-way air distribution for suspended ceilings. Ensures silent and pleasant
room conditions even with higher cooling capacities.
Application area
▪ Cooling and ventilation in offices, hospital rooms, schools, and public spaces.
▪ Can be used in Halton’s demand-based ventilation systems.
Key features
▪ Active chilled beam with 4-way air distribution.
▪ Adjustable airflow using manual CAV or motorised VAV, with the Halton Air Quality (HAQ) control.
▪ Throw pattern expanded to corners, which ensures pleasant room conditions even with high cooling
capacities.
2.2 Operating principle
The primary supply air enters the plenum of the Halton Rex Expander chilled beam, from which it is diffused into
the room through the nozzles and supply slots. The air jets from the nozzles induce ambient room air efficiently
through the heat exchanger, where the air is cooled by means of the cool water circulating in the heat exchanger.
The supply slots direct the air jets horizontally along the ceiling surface, which prevents the feeling of draught.
Halton Rex Expander (RXP) - Installation, commissioning, and maintenance guide
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