Trial Operation And Testing; Items To Check - Daikin 2MXM40M2V1B Installation Manual

Trial Operation and Testing

• Before starting the test run, measure the voltage at the primary side of the safety breaker.
• Check that all liquid and gas stop valves are fully open.
• Check that piping and wiring all match.
1.
Trial operation and testing
1) To test cooling, set for the lowest temperature. To test heating, set for the highest temperature. (Depending on the room
temperature, only heating or cooling (but not both) may be possible.)
2) After the unit is stopped, it will not start again (heating or cooling) for approximately 3 minutes.
3) During the test run, first check the operation of each unit individually. Then also check the simultaneous operation of
all indoor units.
Check both heating and cooling operation.
4) 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.
Temperature difference
between inlet and outlet
5) During cooling operation, frost may form on the gas stop valve or other parts. This is normal.
6) Operate the indoor units in accordance with the included operation manual. Check that they operate normally.
2.

Items to check

Are the indoor units installed securely?
Has an inspection been made to check for gas leakage?
Has complete thermal insulation been done (gas pipes, liquid
pipes, indoor portions of the drain hose extension)?
Is the drainage secure?
Are the ground wire connections secure?
Are the electric wires connected correctly?
Is the wiring in accordance with the specifications?
Are the inlets/outlets of the indoor and outdoor units free of any
obstructions?
Are the stop valves open?
Do the marks match (room A, room B) on the wiring and piping
for each indoor unit?
ATTENTION
• Have the customer actually operate the unit while looking at the manual included with the indoor unit. Instruct the customer
how to operate the unit correctly (particularly cleaning of the air filters, 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
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 side
of the stop valve cover.
English
Cooling
Approx. 8°C
Check item
Heating
Approx. 15°C
(When running in one room)
Consequences of trouble
Falling, vibration, noise
No cooling, no heating
Water leakage
Water leakage
Danger in the event of a ground fault
No cooling, no heating
Operation failure, burning
No cooling, no heating
No cooling, no heating
No cooling, no heating
Check
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