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English
Trial Operation and Testing
Trial operation and testing
1.
Select the lowest programmable temperature.
•
For protection, the system disables restart operation for 3 minutes after it is turned off.
•
During the trial operation,
fi
rst check the operation of each unit individually. Then also check the simultaneous operation
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of all indoor units.
After running the unit for approximately 20 minutes, measure the temperatures at the indoor unit inlet and outlet. If the
•
measurements are above the values shown in the table below, then they are normal.
Cooling
Temperature difference between inlet and outlet
Approx. 8°C
(When running in one room)
During cooling operation, frost may form on the gas stop valve or other parts. This is normal.
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Operate the indoor units in accordance with the included operation manual. Check that they operate normally.
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Items to check
2.
Check item
Consequences of trouble
Check
Are the indoor units installed securely?
Falling, vibration, noise
Has an inspection been made to check for gas leakage?
No cooling, the water does not heat up at all
Has complete thermal insulation been done (gas pipes, liquid
pipes, indoor portions of the drain hose extension)?
Water leakage
Is the drainage secure?
Water leakage
Are the ground wire connections secure?
Danger in the event of a ground fault
Are the electric wires connected correctly?
No cooling
Is the wiring in accordance with the speci
fi
cations?
Operation failure, burning
Are the inlets/outlets of the indoor and outdoor units free of
any obstructions?
Are the stop valves open?
Indoor unit stop valves (gas stop valve, liquid stop valve)
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Water heater stop valves (water heater inlet stop valve,
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water heater outlet stop valve)
No cooling, the water does not heat up at all
Do the marks match (room A, room B, room C) on the wiring
and piping for each indoor unit?
No cooling, the water does not heat up at all
Is the water heater piping length setting completed?
Is the water heater thermistor installed in the water heater?
The water does not heat up suf
fi
ciently
Is the digital temperature indicator installed?
Hot water volume is not known
ATTENTION
Have the customer actually operate the unit while looking at the manual included with the indoor unit. Instruct the customer
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how to operate the unit correctly (particularly cleaning of the air
fi
lters, operation procedures, and temperature adjustment).
Even when the air conditioner is not operating, it consumes some electric power. If the customer is not going to use the unit
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soon after it is installed, turn off the breaker to avoid wasting electricity.
If additional refrigerant has been charged because of long piping, list the amount added on the nameplate on the reverse
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side of the right side plate.
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10/30/2014 9:40:16 AM
