Gree Versati II+ - Flow Chart Of Troubleshooting; High-pressure Protection E1

3
Design & Selection
2 Model Selection
2.1 Speculations of Power Supply
Two choices of Power Supply
380~415V-3PH-50Hz
220~240V-1PH-50Hz
GRS-CQ10Pd/NaC-K
GRS-CQ8.0Pd/NaC-K
GRS-CQ12Pd/NaC-M
GRS-CQ14Pd/NaC-M
2.2 Operation Conditions
Capacities and power inputs are based on the following conditions (oor heating /cooling )
a. Cooling conditions b. Heating conditions
Indoor Water Temp 23°C/18°C; Indoor Water Temp 30°C/35°C;
Outdoor Air Temp 35°C DB/24°C WB Outdoor Air Temp 7°C DB/6°C WB
Capacities and power inputs are based on the following conditions (FCU or radiator)
a. Cooling conditions b. Heating conditions
Indoor Water Temp 12°C/7°C; Indoor Water Temp 40°C/45°C;
Outdoor Air Temp 35°C DB/24°C WB Outdoor Air Temp 7°C DB/6°C WB
2.3 Flowchart of Model Selection
Calculate the load
Preliminary selection
of unit
Finish unit selection
Actual capacity ＞
Load
Calculate the load
YES
NO
2.4 Design Principle
◆
Cooling: capacity of the unit ≥ cooling load of the air conditioning
◆
Heating: capacity of the unit ≥ max{ heating load, oor heating load, water heating load}
◆
Water Tank: it should be selected based on the sanitary outfit or quantity of users. Each unit can
accommodate only one water tank.