Johnson Controls (H,Y,C)IDM012B21S Installation And Maintenance Manual page 10

● Proper handling of this unit requires two-people. Safe handling and installing the indoor unit requires the
strength of two people. Mounting the unit alone may cause injury due to fall of the unit. Although the unit
may be girded with steel banding, do not use it for transportation. Avoid contact with finned surfaces of
the heat exchanger as sharp edges can cause severe injury to hands and fingers. Use appropriate work
gloves for the job.
● The optional decorative panel can become deformed if the positioning of the indoor units suspension
brackets are not stable or level. Condensation can accumulate in low spots as a result due to escaping
air through any resulting gaps between the indoor unit and the decorative panel.
● Check to ensure that the drain hose discharges moisture properly. If connected incorrectly, it can result in
leakage and damage to furniture.
● Make sure to use the factory-supplied drain hose and hose clamp. Other makes can cause moisture
leakage.
● Do not bend or twist the factory-supplied drain hose. This could compromise the seal and result in
moisture leakage.
● Do not apply an excessive force to the drain pipe connection. This can also compromise the seal
properties of the connection.
● Verify that the installed unit is level with floor and ceiling surfaces. Any variance or inclination can cause
moisture to back up into the drain pan, overflow, and seepage onto ceiling or wall surfaces, and cause
damage to carpeted surfaces or furniture below.
● Do not install this system in close proximity to septic sewer lines where flammable and toxic gases can coalesce.
● Inspect the drain pan before the onset of winter to drain away all accumulated moisture in the pan.
● The heat exchanger of indoor unit overheats whenever there is a slight amount of refrigerant circulating
during slowdown or stoppage. As a result, moisture in the drain pan evaporates where it can condense on
ceiling or wall surfaces.
● After the drain check is completed, insert the rubber plug again and seal the gap with a silicon sealant.
Electrical Installation
In some cases, the packaged air conditioner may not be operated normally under the following cases:
● When electrical power for the packaged air conditioner is supplied from the same power transformer
as the device*.
● When the power supply wiring for the device* and the packaged air conditioner are located close to
each other:
Device*: (Example): Lift, container crane, rectifier for electric railway, inverter power device, arc
furnace, electric furnace, large-sized induction motor, and large-sized switch.
It consumes large quantities of electrical power.
Regarding that mentioned above, surge voltage may be inducted into the power supply wiring for the crated
air conditioner due to a spike in power consumption for this device and an activation of the switch. Check
the field regulations and standards before performing any electrical work in order to safeguard the power
supply for the crated air conditioner unit.
8
NOTICE
P00792Q-rev.2