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ENGLISH
1
Check whether the air is completely removed and the water
supply is flowing smoothly.
2
Check whether there is any refrigerant leakage of any
disconnected or loose communication or power wire, or use the
electric wiring diagram to check the wiring connection condition.
Check whether the power and communication wire are
connected.
3
Check whether the power cable R, S and T are correctly
connected. Check the insulation resistance with the DB mega
tester device (DC 500 V) between the power terminal block and
grounding, and check whether it is 2 MΩ or above when
measured.
If the resistance is 2 MΩ or less, do not operate the product.
Precaution)
- Never check the insulation resistance for the terminal control
board. (The control board can be damaged.)
- 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 MΩ.
4
[For Heat Recovery system]
Check if liquid pipe and high/low pressure gas pipe valves are
fully opened.
[For Heat Pump system]
Check if the liquid pipe and gas pipe valves are fully opened.
NOTE : In case of Heat Pump system, check if liquid pipe and
gas pipe valves fully opened. But the middle positioned pipe
valve should be closed. (No use)
NOTE : Be sure to tighten caps.
5
Precaution when blocking the water cooling type Multi V main
power
- While using the product (Air conditioning season/Heating
season), always connect the main power of the outdoor unit.
- During the test run operation after installing the product or
during the operation after blocking the outdoor unit main
power (Power outage etc.), you 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.)
TEST RUN
Precaution before test run
CAUTION
!
• Request the function settings to the installation specialist during
the outdoor unit installation.
• When the function is not used, set it to OFF.
Mode setting
- ON: Set to control the heat source water pipe Solenoid Valve from
the product.
- OFF: Set not to control the heat source water pipe Solenoid Valve
from the product.
Turn on DIP switch No.5 of the master unit PCB
Use ‘▶‘ and ‘◀‘ button to mark “Func” in the 7
segment, and press ‘●‘ button.
Use ‘▶‘ and ‘◀‘ button to mark “Fn41” in the 7
segment, and press ‘●‘ button.
Use ‘▶‘ and ‘◀‘ button to select between “ON” and
“OFF” in the 7 segment, and press ‘●‘ button.
Decide Sol. Valve 220 V control
according to the set mode.
CAUTION
!
• Request the function settings to the installation specialist during
the outdoor unit installation.
• When the function is not used, set it to OFF.
Variable water flow control (Fn 42)
It is the function to select when you want to install Variable water flow
control kit and control it from the product.
How to set the mode
Mode setting
- ON: Set to control the variable water flow control valve from the
product
- OFF: Set not to control the variable water flow control valve from the
product
Turn on DIP switch No.5 of the master unit PCB
Use ‘▶‘ and ‘◀‘ button to mark “Func” in the 7
segment, and press ‘●‘ button.
Use ‘▶‘ and ‘◀‘ button to mark “Fn42” in the 7
segment, and press ‘●‘ button.
Use ‘▶‘ and ‘◀‘ button to select between “ON” and
“OFF” in the 7 segment, and press ‘●‘ button.
Decide the Variable water flow control mode
according to the set mode.
Sol. Valve 220 V output (Fn 41)
It is the function to select 220 V output when you want solenoid valve
control.
How to set the mode
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