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Ceiling Concealed Unit
13. During pump-down, stop the compressor before removing the refrigerant piping. If the compressor
is still running and the stop valve is open during pump-down, air will be sucked in when the
refrigerant piping is removed, causing abnormal pressure in the refrigerant cycle which could lead
to breakage and even injury.
14. During installation, attach the refrigerant piping securely before running the compressor. If the
compressor is not attached and the stop valve is open during pump-down, air will be sucked in
when the compressor is run, causing abnormal pressure in the refrigerant cycle which could lead
to breakage and even injury.
15. Be sure to establish a ground. Do not ground the unit to a utility pipe, arrester, or telephone
ground. Incomplete ground may cause electrical shock, or fire. A high surge current from lightning
or other sources may cause damage to the air conditioner.
16. Be sure to follow your local, state and National Electric Codes when grounding this unit.
17. This appliance is not intended for use by persons with a lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a person
responsible for their safety.
18. Children should be supervised to ensure that they do not play with the appliance.
19. If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualified persons in order to avoid electrical risk during and after replacement.
Do not install the air conditioner in a place where there is danger of exposure to flammable gas
leakage. If gas leaks and builds up around the unit, it may result in fire.
1. Establish drain piping according to the instructions in this manual. Inadequate piping may cause
flooding.
2. Tighten the flare nut according to the specified method such as with a torque wrench. If the flare
nut is tightened too hard, the flare nut may crack and cause refrigerant leakage.
CAUTION
NOTICE
6
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