Daikin SUPER MULTI NX CDXS18LVJU, Engineering Data

Page: 312 / 464

EDUS121131 Outdoor Unit
Installation Manual 307
2
C: 3P207257-3D
Test Run and Final Check (2)
●
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.
ATTENTION
Test Run and Final Check
●
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.)
●
After the unit is stopped, it will not start again (heating or cooling) for approximately 3 minutes.
●
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.
●
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.
Items to Check
●
During cooling operation, frost may form on the gas stop valve or other parts. This is normal.
●
Operate the indoor units in accordance with the included operation manual. Check that they operate normally.
Temperature difference
between inlet and outlet
Approx. 14
°
F
Cooling
Approx. 36
°
F
Heating
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, room C, room D) on
the wiring and piping for each indoor unit?
Is the priority room setting set for 2 or more rooms?
Check item Check 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
The priority room setting will not function.
(When running in one room)