T9901018-1
Page 16 of 26
COMMISSIONING THE DRY COOLING UNIT
Ensure that the electrical supply to the Mitsubishi Electric Outdoor Unit and the
local electrical supply switch to the Thermoscreens Dry Cooling Unit are
switched off.
Chilled Water System Checks
The chilled water system must be commissioned by a qualified technician in accordance
with CIBSE Commissioning Code W, CIBSE KS9, BSRIA AG 2/89.3 and BSRIA AG
1.2001.1.
Check that the chilled water system has been cleaned using a suitable cleaning agent to
ensure that any flux residues/installation debris is removed (see BSRIA AG 1/2001.1).
Check that the chilled water system has been filled and the correct concentration of
inhibitor has been added.
If necessary, check that the system has been protected against freezing and that the
correct concentration of anti-freeze has been added.
Check that all water valves are open.
Check that air has been vented from the water system and thoroughly check the whole
system for water leaks – repair as necessary.
Dry Cooling Unit Checks
Check that the components inside the dry cooling unit are as shown in the picture below
Siemens
QAH11.1
Return Air
Sensor
(Black)
Interface
PCB
Room Over Temperature
Alarm Sensor (Silver)
Room Over Temperature
Alarm Thermostat
(underneath the unit)
24v AC
Relay
