Air Handlers
18
①. High and low voltage wires should be led through different rubber grommets
of the electric box cover.
②. Do not bundle up the thermostat wires or lay them side by side, otherwise
errors will occur.
③. High and low voltage wires should be secured separately. Secure the former
ones with big clamps and the latter ones with small clamps.
④. Use screws to tighten up the thermostat wires and power cords of unit on
terminal board. Wrong connection may lead to fire hazard.
⑤. If the thermostat wires of unit and power cords are not correctly connected,
the air conditioner may get damaged.
⑥. Ground the unit through connecting the ground wire.
⑦. The units should comply with applicable local and national rules and
regulations on power consumption.
⑧. When connecting the power cords, make sure the phase sequence of the
power supply matches with the corresponding terminals, otherwise the
compressor will get reversed and operate abnormally.
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
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