CAUTION
●Do not install an air bleeder as this may cause water to spray from the drain pipe outlet. (Fig.
●In cases where it is necessary to raise the height of the drain piping, the drain piping can be raised to a maximum height of
Araise it higher than
●Do not use natural drainage.
●Do not install the pipe with an upward gradient from the connection port. This will cause the drain water to flow backward and leak when the unit is not operating. (Fig.
●Do not apply force to the piping on the unit side when connecting the drain pipe. The pipe should not be allowed to hang unsupported from its connection to the unit. Fasten the pipe to a wall, frame, or other support as close to the unit as possible. (Fig.
●Provide insulation for any pipes that are run indoors.
3-11. Checking the Drainage
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)Pour about 0.2 gal of water into the drain pan using a siphon pump through the air outlet grille. (Fig.
(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.
CAUTION | Be careful since the fan will start | |
when you short the pin on the indoor | ||
| ||
| ||
| control board. |
(4)When the drainage check is complete, open the check pin (CHK) and remount the insulator.
CAUTION | The bottom drain port is for use only | |
during test runs and servicing | ||
| ||
| ||
| inspections. Do not connect the drain | |
| pipe to the bottom drain port. |
Air bleed valve
Fig.
0 – 45°
* Length of supplied drain hose =
Fig.
Uphill slope
Fig.
Support bracket
Fig.
Drainage check
Drain tube connection (transparent)
Discharge port
water (0.2 gal)
Fig.
34