Air Handlers
22
5 Installation Check and Trial Run
5.1 Checking Items after Installation
Items to be checked
Problems might happen due to
Check
Check if each parts of the unit have
The unit might fall off, vibrate or emit
Check if the unit has passed
It may cause deficiency of cooling
Check if the unit has been insulated
It may cause condensation and
Check if the water can be drained
It may cause condensation and
Check if the power voltage accords
with that on the nameplate.
Malfunction might happen and parts
Check if the wiring and pipe line has
been installed correctly.
Malfunction might happen and parts
Check if the unit has been earthed
Hazard of electricity leakage.
Check if the wiring conforms to the
Malfunction might happen and parts
Check if there is obstruction
blocking the air inlet/outlet.
It may cause deficiency of cooling
Check if the piping length and
refrigeration charging volume has
Uncertain about the refrigerant
charging volume.
Check if the piping connection and
valves have been set properly.
It may cause unit abnormality and
Make sure there is no crack among
air return and supply pipe.
It may cause air leak, vibration and
Check if the panel is mounted firmly.
It may cause air leak, vibration and
5.2 Trial Run
5.2.1 Preparative for Trial Run
(1) Never power on the unit until all the installation work has been done.
(2) All the control circuit and wiring has been connected correctly and soundly. Valves
on the gas and liquid line should be completely open.
(3) All the scattered objects should be removed, especially metal filing, thrum and
clip.