Panasonic U1 Serie Instructions D'installation page 11

3-5-3. Checking the Drainage
Be careful since the fan will start
CAUTION when you short the pin on the
indoor control board.
After wiring (refer to 4. ELECTRICAL 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 (L, N
terminals) inside the electrical component box.
(2) Slowly pour about 1,200 cc of water into the drain pan to
check drainage. (Fig. 3-12)
(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
11
Drain pan outlet
Fig. 3-12
Check Remark