70
Work List No. Content Check
□
Possibility of Failure & Checkpoint
Installation
1
Are the indoor units installed following the
content of Section “2. SELECTING THE
INSTALLATION SITE”?
□
There is a possibility of light injure or loss of
property.
Tubing &
Wiring
2
In the case of multiple installation: Is there
a wrong tubing connection with another
system?
□
The unit is inoperated or the refrigerant flows
into the inoperative unit and the leakage is
expected. Check if there is a wrong tubing or wiring
connection with another system.
3
In the case of multiple installation: Is there
a wrong wiring connection with another
system?
□
4
Is the earth leakage circuit breaker
(all-pole switching function provided)
installed?
□
Power failure or short circuit may cause electric
shock or fire. Check installation work and ground
wire work.
5
Is there any wrong installation of optional
parts or wrong wiring?
□
6
Was the ground wire work performed?
□
7
Are there any wrong power supply wiring,
wrong connection wire, wrong signal wire
or loose screw?
□
8
Is the thickness of wire in accordance with
rule?
□
9
Is the power-supply voltage equal to the
nameplate of the unit?
□
10
Was the check of the airtight test, flared
tube fitting and gas leakage on the
welded portion performed?
□
If the gas leakage occurs, the unit quality not only
becomes inferior but affects environment. Repair it
as quickly as possible.
Drain
Check
11
Has the adhesive been applied to the
drain connecting portion (resin portion) of
the indoor unit?
□
The resin portion cracks after a few months and it
may cause water drain.
12
Is there water leakage?
□
Since there is a possibility of water drain, repair the
drain pipe if the drain failure or water drain occurs.
13
Indoor unit drain pipe has a downward
gradient (1/100 or more) by rule. Is the
drain water flowing smoothly?
□
Heat
Insulation
14
Was the heat insulation work at a suitable
location including the flared tube fitting
(refrigerant tube & drain pipe) performed
properly?
□
The quality of unit not only becomes inferior but
there is a possibility of the water drain. So, perform
the heat insulation work properly.
Test Run
15
Did the abnormal sound occur?
□
Check if there is a fan contact or distortion of the
indoor unit.
16
Did the cool and warm airflow discharge
from the indoor unit?
□
Check if the unit does not operate or there is a
wrong tubing or wiring connection with another
system.
10. CHECKLIST AFTER INSTALLATION WORK
01_330918_EU_Eng.indb 70 2021/9/9 11:27:03
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