Gree HOME GMV [49/367] Correction for product capacity

Gree HOME GMV [49/367] Correction for product capacity
Dc Inverter VRF plus Water Heater Solution Service Manual PRODUCT
45
5 CORRECTION FOR PRODUCT CAPACITY
5.1 Introduction to Capacity Correction
The actual capacity of VRF units is related to indoor and outdoor ambient temperatures, Length of connecting
pipe between indoor unit and outdoor unit (distance of piping), as well as drop height between indoor and outdoor
unit.Therefore, During the design and model selection, correct the nominal capacity of the unit according to the
below methods.
5.2 Capacity Code
Capacity Code of Indoor Unit= Rated Cooling Capacity of Indoor Unit(W) ×0.01
Capacity Code of Outdoor Unit= Rated Cooling Capacity of Outdoor Unit(W) ×0.01
eg: GMV-Pds120W/Na-K: Rated cooling capacity of outdoor unit is 12000W and its capacity code is 120;
GMV-R25P/NaB-K: Rated cooling capacity of indoor unit is 2500W and its capacity code is 25.
5.3 Formula of Capacity Correction
Capacity of each Indoor Unit = Capacity of Outdoor Unti × Capacity of Indoor Unti/Total Capacity of Indoor
Units which are running at the same time
Capacity of Outdoor Unit= Rated Capacity of Operating Mode of Outdoor Unit × Coefficient of Correction of
Temp Conditions × ( Coefficient of Correction of Piping Distance- Coefficient of Correction of Drop Height)
5.3.1 Rated Capacity of Operating Mode of Outdoor Unit
Total capacity of indoor units which are runnin at the same time determines rated capacity of operating mode
of outdoor unit.
When the sum of capacity codes of indoor units is not more than the capacity code of outdoor unit, the sum is
equal to the rated capacity of operating mode of outdoor unit.
When the sum of capacity codes of indoor units is more than the capacity code of outdoor unit, the rated
capacity of operating mode of outdoor unit is equal to its rated cooling capacity.
5.3.2 Coefficient of Correction of Indoor and Outdoor Temp Conditions
1Coefficient of Correction of Cooling Capacity
20
35
25
30
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Indoor Dry-bulb Temp ()
Indoor Wet-bulb Temp (℃)

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