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5.
Water Discharge Piping Installation
5.1. Water Discharge Piping Installation for Indoor Unit
1. Use PVC pipes for the water discharge pipes (outer diameter: 37~39 mm,
inner diameter: 32 mm). Based on the actual installation circumstance,
users can purchase the appropriate piping length from sales agent or local
after-sales service centre, or purchase directly from the local market.
2. Insert the water discharge pipe into the end of the water suction connecting
pipe of the unit body, and use the ring clamp to clamp the water discharge
pipes with the insulation casing for the water outlet piping securely.
3. Use the insulation casing for water discharge piping
suction and discharge pipes of the indoor unit (especially the indoor portion),
and use the tie for the water discharge piping to bind them firmly to make sure
air does not enter and condense.
4. In order to prevent the back-flow of water into the interior of the air
conditioner when the operation stops, the water discharge pipe should
slope downwards towards the outside (drainage side) at a slope of more
than 1/100. Make sure that the water discharge pipe does not swell or store
water; otherwise, it will cause strange noises. See Figure 5.1.
5. When connecting the water discharge piping, do not use force to pull the
pipes to prevent the water suction pipe connections from coming loose. At
the same time, set a supporting point at every 0.8~1 m to prevent the water
discharge pipes from bending. See Figure 5.1.
Heat insulation
material
Bending
Figure 5.1
6. When connecting to a long water discharge pipe, the connections must be
covered with the insulation casing to prevent the long pipe from coming
loose.
7. When the outlet of the water discharge pipe is higher than the pipe connec-
tion for water suction, try to keep the water discharge pipe as vertical as
possible, and the water outlet connecting fittings will bend so that the height
of the water discharge pipe should be within 1000 mm away from the base
of the drain pan. Otherwise, there will be excessive water flow when the
operation stops. See Figure 5.2.
As large as possible
(about 10 cm)
Sloping downwards
1/100 or more
Figure 5.2 Centralised water discharge
8. The end of the water discharge pipe must be more than 50 mm above the
ground or from the base of the water discharge slot. Besides, do not put it
in the water.
Caution
•
Make sure all the connections in the piping system are properly
sealed to prevent water leakages.
to bundle the water
0.8~1.0m
Slope > 1/100
Folding
VP30
5.2 Water Discharge Test
Before the test, make sure that the water discharge pipeline is
smooth, and check that each connection is sealed properly.
Conduct the water discharge test once the unit is installed.
1. Use the water injection pipe to inject 500 ~ 1000 ml of water into
the water pan.
2. Verify that the water discharge piping outlet discharges water
properly, and check for water leakages at each joint.
6.
Electrical Wiring
Warning
• All the supplied parts, materials and electrical works must comply with local
regulations.
• Use only copper wires.
• Use a dedicated power supply for the air-conditioners. The power voltage
must be in line with the rated voltage.
• The electrical wiring works must be carried out by a professional technician,
and must comply with the labels stated in the circuit diagram.
• Before the electrical connection works are carried out, turn off the power
supply to prevent injuries caused by electric shock.
• The external power supply circuit of the air conditioner must include an earth
line, and the earth line of the power cord connecting to the indoor unit must
be securely connected to the earth line of the external power supply.
• Leakage protective devices must be configured according to the local
technical standards and requirements for electrical and electronic devices.
• The fixed wiring connected must be equipped with an all-pole disconnection
device with a minimum 3 mm contact separation.
• The distance between the power cord and signalling line must be at least 300
mm to prevent the occurrences of electrical interference, malfunction or
damage to electrical components. At the same time, these line must not
come in contact with the piping and valves.
• Choose electrical wiring that conforms to the corresponding electrical
requirements.
• Connect to the power supply only after all the wiring and connection works
have been completed, and carefully checked to be correct.
6.1 Power Cord Connection
Use a dedicated power supply for the indoor unit that is different from the
power supply for the outdoor unit.
Use the same power supply, circuit breaker and leakage protective device
for the indoor units connected to the same outdoor unit.
Outdoor power
supply
RCCB
Grounding line
Grounding line
Indoor power
supply
RCCB
Communication wire between
indoor and outdoor units
Figure 6.2 shows the power supply terminal of the indoor unit.
When connecting to the power supply terminal, use the circular wiring terminal
with the insulation casing (see Figure 6.3).
If circular wiring terminal with the insulation casing cannot be used, please
make sure that:
• Do not connect two power cords with different diameters to the same power
supply terminal (may cause overheating of wires). See Figure 6.4.
• Use power cord that conforms to the specifications and connect the power
cord firmly. To prevent the cord from being pulled out by external force, make
sure it is fixed securely.
7
Wire slot
Figure 6.1
L
N
XT1
Y/G
POWER IN
Figure 6.2
Indoor unit
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