Test Run - LG Multi V Water IV ARWN080LAS4 Manual De Instalación

Use Sump Heater
It is the function to select when you want to connect and use Sump
Heater.
How to set the mode
Turn on DIP switch No.5 of the master unit PCB
Use '▶' and '◀' button to mark "Func" in the 7 seg-
ment, and press ' ' button.
Use '▶' and '◀' button to mark "Fn8" in the 7 seg-
ment, and press ' ' button.
Use '▶' and '◀' button to select between "ON" and
"OFF" in the 7 segment, and press ' ' button.
Decide Sump Heater control according to the set mode.
Mode setting
- ON: Set to control the Sump Heater from the product
- OFF: Set not to control the Sump Heater from the product
! CAUTION
• Request the function settings to the installation specialist during
the outside unit installation.
• When the function is not used, set it to OFF.
• If the temperature of the outside unit installation place is 0°C or
less, we recommend the connection and usage of Sump Heater.
IDU capacity adjusting
If the operation of indoor unit is more than 130%, the air flow is oper-
ated as low in the all indoor units.
How to set the mode
Turn on DIP switch No.5 of the master unit PCB
Use '▶' and '◀' button to mark "Func" in the 7 seg-
ment, and press ' ' button.
Use '▶' and '◀' button to mark "Fn9" in the 7 seg-
ment, and press ' ' button.
Use '▶' and '◀' button to select between "ON" and
"OFF" in the 7 segment, and press ' ' button.
IDU capacity adjusting mode is set
Mode setting
- ON: Set to control the Low capacity mode
- OFF: Set not to control
! CAUTION
• Ask an authorized technician to setting a function.

TEST RUN

Precaution before test run
Check whether the air is completely removed and the water sup-
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ply is flowing smoothly.
Check whether there is any refrigerant leakage of any disconnected
or loose communication or power wire, or use the electric wiring dia-
2
gram to check the wiring connection condition. Check whether the
power and communication wire are connected.
Check whether the power cable R, S, T and N are correctly con-
nected. Check the insulation resistance with the DB mega tester
device (DC 500V) between the power terminal block and ground-
ing, and check whether it is 2.0MΩ or above when measured.
If the resistance is 2.0MΩ or less, do not operate the product.
Precaution)
- Never check the insulation resistance for the terminal control
board. (The control board can be damaged.)
3
- If you leave the system turned off right after the installation or for a
long period of time, the refrigerant gets accumulated within the
compressor and the insulation resistance reduces to less than 2
MΩ. When the insulation resistance is 2 MΩ or less, turn on the
power and let the electricity be supplied to the crank case heater of
the compressor and let the refrigerant including the oil inside the
compressor to evaporate. Then the insulation resistance value will
increase to more than 2.0 MΩ.
4 Check whether the liquid and gas pipes are open.
Precaution when blocking the water cooling type Multi V main power
- While using the product (Air conditioning season/Heating season), al-
ways connect the main power of the outside unit.
- During the test run operation after installing the product or during the oper-
ation after blocking the outside unit main power (Power outage etc.), you
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must always connect the power 6 hours prior to heating the crank case
heater. If the crank case is not preheated for more than 6 hours with the
electric heater, it can cause a burn on the compressor.
(Heating the bottom part of the compressor with the crank case heater is
to evaporate the refrigerant included in the oil inside the compressor.)
Water supply system test run
Before executing the test run for the product, you must first test the
heat source water system.
The test run for the product must be executed after checking the flow
rate and temperature of the heat source water supplied.
Design the system including cooling tower, boiler, pump etc.
Equipment design
- Check the equipment capacity (Water volume, temperature
control range).
Water pipe system
Install the water pipe
installation
Water supply pipe
Connect the water pipe to the inlet/outlet of the product so
and product connection that the water can be supplied to the product.
Water supply
Execute water supply system test run
system test run
- The product does not operate but the pump and water
supply equipment will operate to flow the Heat source
water to the heat exchanger on the product side.
- Flow the water to all water piping system to clean any alien
particles inside the pipes and execute an air purge to
remove an air within the pipes to make the water supply
smoother.
- Clean all the strainers of water pipe including around
outside units.
Judging whether there
Execute the test of water supply system without operating
is any problem with
the product.
the water supply
- Check whether outside unit inlet/outlet flow rate complies
to the product specification. Standard Water volume is
96LPM based on 10HP and 192LPM based on 20HP.
- Check the water supply temperature. whether is OK
Execute the
After checking the normal condition of the water supply,
product test run
execute the test run of the product.
To prevent the freezing of the heat exchanger when the
refrigerant is discharged with the water supply blocked,
discharge the refrigerant after draining out around the
outside unit.
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