Multi Variable Air Conditioners Ducted Type Indoor Unit
1
1 Safety Precautions
(1) Please read this manual carefully and follow the instructions before unit startup and/or service by a
licensed HVAC technician.
(2) Size power supply wiring by recommendations provided here, or in the product submittals, while adhering to
all local codes and regulations. Any damaged wiring must be replaced prior to unit startup or service.
(3) After connecting power supply wiring, secure the electrical box cover properly in order to avoid accidents.
(4) Use nitrogen whenever welding (brazing) refrigerant piping. Always follow generally accepted procedures.
(5) Do not disconnect or bypass pressure switches. Unit damage or physical harm may occur.
(6) To operate properly the wired controller must be connected prior to unit startup.
(7) To prevent electrical shocks, fire and/or water damage, etc., check all piping and wiring prior to unit
start up for water and refrigerant leaks.
(8) Do not insert fingers or objects into air outlet/inlet grille.
(9) Whenever gas/oil appliances or equipment is present, make sure the area is properly ventilated. Open
doors and windows to avoid oxygen depletion.
(10) Where applicable, never start up or shut off an air conditioner by plugging or unplugging the power cord.
(11) Let system run for at least five minutes to insure proper oil return to the compressor.
(12) Do not allow children operate this unit.
(13) Do not operate this unit with wet hands.
(14) Make sure the unit is turned off and the supply power is disconnected prior to cleaning the unit, to prevent
electrical shock or injury.
(15) Never spray or flush the indoor or outdoor unit with water, electrical shock or equipment damage may occur.
(16) Do not install this equipment in moist or corrosive environments.
(17) In cooling, the temperature difference between the indoor and outdoor unit must be within 41°F (5 ℃).
(18) There are no user serviceable parts. Repair and servicing must be done by a licensed HVAC
technicial to preserve the system warranty.
(19) Check power supply requirements prior to purchase and/or installation. Power supply information is
available on www.greecomfort.com/resources/dealer-resources-current-product/
(20) Installation must be done by a licensed HVAC technician. Please do not attempt to install the unit by
yourself. Improper procedures may result in water damage, electrical shock or fire, etc..
(21) Use only generally acceptable fittings, parts and procedures to install or service this system.
(22) Improper grounding of this equipment may prevent the system from operating properly. This system must
be grounded properly, do not connect the ground to gas or water pipe, lightning rod or telephone line.
(23)Power-on the unit 8 hours before operation. Turn on power for 8 hours before operation. Do not cut off the
power for more than 24 hours (to protect the compressor).
(24) If refrigerant leakage occurs during installation, please ventilate the area immediately. If refrigerant comes
in contact with fire, poisonous gas will be created.
(25) To maintain the systems exterior finishes, use only mild cleaning agents on system surfaces.