Stulz CeilAir CW - Air Filter Replacement; Humidifier Cylinder Replacement

78 OCH0006F08/13/2024
CEILAIR
®
CW & DX IOM
4.3.4.4 HUMIDIFIER CYLINDER REPLACEMENT
13. In two weeks, examine oil to determine if another suction line filter-drier change is necessary.
4.3.4.4 Humidifier Cylinder Replacement
After an extended period of operation, the yellow LED on the humidifier cabinet will repeatedly flash four
times indicating that the cylinder is completely used, and a replacement cylinder must be installed. The
cylinder is disposable and cylinder life is dependent on water supply conditions and humidifier usage. Refer
to the humidifier installation and operation manual supplied separately for detailed instructions on changing
the cylinder. The following procedures are to be followed when replacing the cylinder.
CAUTION
Failure to replace the cylinder at the end of cylinder life may result in humidifier damage.
NOTE Cool Cylinder Before Removal
Decrease the humidity setpoint below ambient humidity to allow the cylinder to cool down before
removing the cylinder.
1. If your unit is equipped with an E² controller, turn the A/C unit off by pressing and holding the Enter key.
2. Turn off the water supply to the humidifier.
3. Turn the main power disconnect switch on the electric box to the Off position. Remove the cover from the
electric box.
4. Using a pair of vise grips, turn the shaft of the main power switch to the On position to provide power for
the humidifier drain solenoid.
5. Follow the steps of the cylinder replacement procedure in the humidifier installation and operation
manual supplied separately with your unit.
6. Replace the cover on the electric box and turn the main power disconnect switch to the On position.
7. If your unit is equipped with an E² controller, turn the A/C unit on by pressing the Enter key.
8. Readjust the humidity to the desired setpoint.
If the humidifier is to be shut down for an extended period, follow the steps of the Extended Shutdown
procedure in the humidifier installation and operation manual.
CAUTION
Failure to perform the recommended Extended Shutdown procedure before a prolonged shut-down
period will drastically shorten the cylinder life.
4.3.4.5 Air Filter Replacement
The air filters are located either internal or external to the cabinet, depending on the configuration of the unit.
Regardless of location, the filter is accessed through an access panel labeled “FILTER ACCESS.” Remove the
access panel and old filter. Ensuring directional airflow arrows on filter are correct, insert the new filter and
replace the access panel.