5 Commissioning
5.1 Before you start
5.1.1 Safety during commissioning
NOTICE
NOTICE
All installation, commissioning, and maintenance work must only be carried out by
qualified personnel.
5.1.2 Commissioning process
Commissioning includes adjusting the settings and doing the required start-up tests. Commissioning is carried out
by Halton Field Service or an approved partner.
Note: When equipped with an electric actuator, the unit is part of a system. The needed settings are adjusted
during the commissioning phase of the system.
5.1.3 Commissioning information
Adjustment of the cooling capacity
The recommended cooling water mass flow rate is 0.02–0.10 kg/s, resulting in a temperature rise of 1–4°C in the
heat exchanger. To avoid condensation, the recommended minimum inlet water temperature of the heat exchanger
is 14–16°C.
Balancing and control of water flow rates
The water mass flow rates of the Halton Rex Expander chilled beam are balanced with adjustment valves installed
on the outlet side of the cooling water loops. The cooling capacity of the Halton Rex Expander chilled beam is
controlled by regulating the water mass flow rate.
Adjustment of the supply airflow rate
With a Halton Rex Expander chilled beam that does not have the Halton Air Quality (HAQ) control, the airflow
depends on the chamber pressure and the selected nozzle. With the HAQ control included, also the position of the
HAQ control must be taken into account.
The chamber pressure can be measured from a measurement tap under the front panel.
The total airflow rate is calculated using the formula below.
Total airflow rate
where
Halton Rex Expander (RXP) - Installation, commissioning, and maintenance guide
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