Gree Ultra Heat GMV-V72W/A-F, Service Manual

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Ultra Heat GMV VRF Technical Service Manual UNIT INTRODUCTION
16
If the above equation cannot be satisfied, then follow the following steps.

Selection of air conditioning system: select one of the next
(1) Installation of effective opening part
(2) Reconfirmation of Outdoor Unit capacity and piping length
(3) Reduction of the amount of refrigerant
(4) Installation of 2 or more security device (alarm for gas leakage)

Change Indoor Unit type:
Installation position should be over 6.6ft from the floor (Wall mounted type → Cassette type)

Adoption of ventilation system:
Choose ordinary ventilation system or building ventilation system

Limitation in piping work:
Prepare for earthquake and thermal stress
8 UNIT OPERATING TEMPERATURE
Cooling Ambient temperature: -10ºC(14ºF)~52ºC(125.6ºF)
Heating
Ambient temperature: -30ºC (-22ºF)~24ºC (75.2ºF)
NOTICE! Out of the working Temperature Range may damage this products and will invalidate the
warranty.
Electrify the unit 8 hours before operation. Please switch on for 8 hours before operation. Do not cut
off the power when 24 hours short-time halting (to protect the compressor).

If unit operates out of the above range, it may not work stably and components may even be
damaged.