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c) Pipes connection
i) All threaded pipes must be sealed using PTFE tape during connection.
ii) After leak testing of water pipes, all pipes must be insulated to prevent heat lost / heat
gain.
iii) All valves on the piping system must be located within the area of the drain pan of the
unit. If the site condition does not permit that, additional insulation or an additional
drain pan should be installed to prevent condensation.
iv) The drain pan is designed to have gradient to ease the flow of condensate water. To
facilitate the proper drainage of condensate water, it is recommended to install the unit
at a gradient of 3 ~ 5mm tilting to the drainage pipe.
v) Condensate water pipe should be insulated to prevent condensation at the outer pipe
due to the cool drainage water. It is recommended that the gradient of the pipe should
not be less than 1:75 to facilitate the flow of drainage water.
Caution: When connecting water pipes, proper sized tools should be used to avoid
damage of pipes or unit.
d) Electrical connection
i) All electrical wiring must be performed by a qualified technician who is certified by the
local authorities.
ii) All electrical wires used for wiring must comply to the local codes and regulations.
iii) Fluctuation of electricity should be within +/-10% of the rated power supply.
iv) During installation, wiring should be connected according to the wiring diagram
provided by the manufacturer and do not wire all of the three speeds of motor together
to a single power source.
v) Earth wire is provided and it is being connected to the casing of the motor for protection.
The unit should be properly GROUNDED to avoid incident of electrical shock.
vi) Unit of different model should not share a single 3-speed switch, or the motor will not
work properly or it will be burnt.
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