Product data

START-UP - Cassette Units
Make the following checks and complete the Start-Up Checklist before system start-up. Refer to outdoor unit
Installation, Start-Up, and Service manual for system start-up instructions and refrigerant charging methods. Be
sure to use the system refrigerant charge shown in Section #4 or #14 or on the outdoor unit nameplate.
1. Check condensate drainage system.
a. Remove grille(s) and frame from the unit.
b. On the opposite side of the drain connection, insert a water bottle up into the fan coil unit and fill drain pan.
Water must flow regularly with condensate pump energized. If water does not, check the pipe slope or see if
there is any pipe restrictions.
NOTE:
The unit is equipped with a safety float switch to de-energize the compressor if the drain water level
gets too high.
2. Make sure that all wiring connections are correct and that they are tight.
3. Make sure that all barriers, covers, and panels are in place.
4. Ensure that the filters and return air grilles have been installed and that the discharge louvers are correctly
positioned.
WARNING:
Never operate unit without a filter or with grille(s) removed. Damage to the unit or personal in
jury may result.