VRF Air-Conditioner IOM
6
accumulating.
When connecting the drain pipe, effective method
should be carried out to guarantee no leakage on
each connection area.
To avoid condensate water accumulating on the
drain pipe and dropping down, the drain pipe
should be insulated.
6.2 Check the drain pipe
After piping work is finished, check if drainage
flows smoothly.
Free drainage
Gradually insert approximately 1000 ml clean
water into the drain pan to check drainage
status.
The electric wiring works should be performed by
specially qualified electricians.
If no electricians in site, please flow the above
steps to do drainage confirmation after the system
test running.
7
INSTALLING THE DUCT
Materials for duct installation are supplied in the
field.
Refer to Fig. 7 to connect the duct.
Fig. 7 Duct Connection
Wrap both the inlet-side and outlet-side flange and
the duct connection area with aluminium tape for
something similar to prevent air escaping.
Please attach an air filter inside the air passage on
the inlet-side. (Use an air filter which duct
collection efficiency (in a gravimetric technique) is
higher than 50%)
Be sure to insulate the duct to prevent condensate
water from forming. (Material: glass wool or
polyethylene foam, above 25mm thickness)
The air outlet height should be appropriate and
cannot be positioned at the place where it directly
blows the people for a long period.
To reduce vibration and noise, it is better to use
flexible connection to connect the air inlet and
outlet duct with indoor unit.
8
ELECTRIC WIRING WORK
8.1 General introduction
Refer to figure 11 for indoor unit electrical wiring.
All field supplied parts and materials and electric
works must conform to local laws.
Only copper wires can be used.
Please refer to the wiring diagram attached with
the unit when performing the electric work.
Please refer to the installation guide attached with
wire controller for electric and detailed instruction.
All wiring works should be performed by specially
qualified electricians.
Shall install the circuit breaker that can shut off the
whole system.
Do not turn on the power supply unless all the
work has been done.
Refer to the installation guide attached with
outdoor unit for specifications of circuit breaker
switch and wire, etc.
The system incorporates multiple indoor units.
Please number the indoor units before installation.
When performing the communicating wires, must
ensure the numbers of indoor wires are same with
the numbers on the terminals of outdoor unit.
Malfunction will occur if the wire connection is
converse or mistake.
Be sure the air-conditioner is well grounded. Never
connect the ground line with gas pipe, water pipe,
lightning conductor or telephone lines. Improper
grounded may cause electric shock.
△
Gas pipe: it may cause explosion or fire when
gas leaks.
△
Water pipe: No grounded when using
stereoplasm polyethylene.
△
Lighting conductor or telephone wire: the
earthing potential may rise abnormally when
thunderstrike.
Must use the terminal having insulation in order to
avoid short circuit.
Wires shall be fixed firmly, then secure to prevent
external pressure being exerted on the terminal
board.
Wires shall be laid orderly. Lid shall be in place and
fixed securely.
Be sure the ground resistance is lower than 0.1Ω.
NO
NO
CAUTION
CAUTION
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