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5 Installation Check and Trial Run
5.1 Checking Items after Installation
Items to be checked
Check if each parts of the unit have
been installed reliably.
Check if the unit has passed
through leakage test.
Check if the unit has been insulated
properly.
Check if the water can be drained
fluently.
Check if the power voltage accords
with that on the nameplate.
Check if the wiring and pipe line has
been installed correctly.
Check if the unit has been earthed
soundly.
Check if the wiring conforms to the
wire gage.
Check if there is obstruction
blocking the air inlet/outlet.
Check if the piping length and
refrigeration charging volume has
been recorded.
Check if the piping connection and
valves have been set properly.
Make sure there is no crack among
air return and supply pipe.
Check if the panel is mounted firmly.
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.
Problems might happen due to
improper installation
The unit might fall off, vibrate or emit
noise.
It may cause deficiency of cooling
(heating) capacity.
It may cause condensation and
water drop.
It may cause condensation and
water drop.
Malfunction might happen and parts
might be burned.
Malfunction might happen and parts
might be burned.
Hazard of electricity leakage.
Malfunction might happen and parts
might be burned.
It may cause deficiency of cooling
(heating) capacity.
Uncertain about the refrigerant
charging volume.
It may cause unit abnormality and
damage the unit.
It may cause air leak, vibration and
noise.
It may cause air leak, vibration and
condensation.
22
Air Handlers
Check
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