Water Discharge Piping Installation; Electrical Wiring - mundoclima MVD DC2 Manual De Instalación Y Usuario

4.6 Heat Insulation Treatment for Gas-Liquid Piping Connections
for the Indoor Unit
The heat insulation treatment is carried out on the piping at the gas and
liquid sides of the indoor unit respectively.
a. The piping on the gas side must use heat insulation material that can
withstand temperatures of 120°C and more.
b. For the piping connections of the indoor unit, use the insulation casing
for copper pipes (accessory 7) to carry out the insulation treatment,
and close all gaps.
Unit
body
4.7 Vacuum
Create a vacuum in the system according to the instructions in the installation
manual of the outdoor unit.
Caution
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outdoor unit are all closed (maintain the factory status).
4.8 Refrigerant
Charge the system with refrigerant according to the instructions in the
installation manual of the outdoor unit.

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: 30~32 mm,
inner diameter: 25 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 (accessory 8) 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 (accessory 7) to bundle
the water suction and discharge pipes of the indoor unit (especially the
indoor portion), and use the tie for the water discharge piping (accessory 9)
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.
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
connection for water suction, try to keep the water discharge pipe as
vertical as possible, and the water outlet connecting fittings will bend so
Face upwards
Attached
On-site piping side
insulation heat
pump belt
Figure 4.5
Slope:
1/100 or more
800 1000mm
>1000mm
that the height of the water discharge pipe should be within 600 mm away
from the base of the drain pan. Otherwise, there will be excessive water
flow when the operation stops. See Figure 5.2.
Water discharge pipes from multiple units are connected to the main water
discharge pipe to be discharged through the sewage pipe.
Below 200 mm 50~100mm
Water outlet Main water
outlet pipe
pipe fittings
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.
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 in the new room before the ceiling is
paved.
1. Remove the test water cap to connect to the test water outlet, and use the
water injection pipe to inject 2000 ml of water into the drain pan.
2. Connect the power supply, and set the air conditioner to operate in the cool
mode. Check the running sound of the drainage pump, as well as whether
water is properly drained from the drainage outlet.
3. Stop the air conditioner. Wait for three minutes, and then check if there is
anything unusual. If the water discharge piping layout is not correct, the
excessive water flow will cause the water level error and "EE" error code will
be displayed on the display panel. There may even be water overflowing
from the drain pan.
4. Continue to add water until the alarm for excessive water levels is triggered.
Check if the drainage pump drains water immediately. After three minutes,
if the water level does not fall below the warning level, the unit will shut
down. At this time, you need to turn off the power supply, and drain away
the accumulated water before you can turn on the unit normally.
5. Turn off the power supply, remove the water manually using the drainage
plug, and put the test cap back to the original place.
Caution
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accumulated water from the drain pan when the air conditioner
malfunctions. When the air conditioner is operating normally, make sure
the drainage plug is properly plugged to prevent water from leaking.

6 Electrical Wiring

Warning
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regulations.
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must be in line with the rated voltage.
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technician, and must comply with the labels stated in the circuit diagram.
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supply to prevent injuries caused by electric shock.
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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.
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technical standards and requirements for electrical and electronic devices.
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disconnection device with a minimum 3 mm contact separation.
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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.
29
Below 200 mm 50~100mm
Below 200 mm
Slope of 1/100
All are below 600 mm
or more
Figure 5.2
50~100mm