Checking The Drainage - Panasonic S-22MU1E5A Technical Data Manual

3. How to install the indoor unit

3-1-5-3. Checking the Drainage

Be careful since the fan will start
CAUTION
when you short the pin on the
indoor control board.
After wiring and drain piping are completed, use the following
procedure to check that the water will drain smoothly. For
this, prepare a bucket and wiping cloth to catch and wipe up
spilled water.
(1) Connect power to the power terminal board (R, S
terminals) inside the electrical component box.
(2) Slowly pour about 1,200 cc of water into the drain pan to
check drainage. (Fig. 2-29)
(3) Short the check pin (CHK) on the indoor control board and operate the drain pump. Check the water flow through the
transparent drain pipe and see if there is any leakage.
(4) When the check of drainage is complete, open the check pin (CHK) and remount the tube cover.
(5) Checkpoint after installation
After installation of indoor and outdoor units, panels and electrical wiring, check the following items.
Checkpoint
Make sure whether indoor and outdoor units
1
are correctly installed.
2 Make sure whether gas leakage is tested.
Make sure whether insulation is completed.
3
(Refrigerant piping and drain piping)
Make sure whether drain water is running
4
smoothly.
Make sure whether the power voltage
5
matches the nameplate.
Make sure whether there is miswiring or
6
incorrect connection.
Make sure whether the ground construction
7
is completed.
Make sure whether the wire gauge is
8
followed by the recommended specifications.
Make sure whether the air intake and air
9 outlet of the indoor and outdoor units are
sealed by obstacles.
Drainage check
Over 100 mm
Plastic container
for water intake
Water (Approx. 1,200 cc)
Symptom
Fall, vibration, noise
No cooling, no heating
Water leakage
Water leakage
Inoperative, burnout
Inoperative, burnout
Ground leakage
Inoperative, burnout
No cooling, no heating
2-19
Design of VRF SYSTEM
Drain pan outlet
Fig. 2-29
Check Remark
1
2
3
4
5
6
7
8
9