Gree HOME GMV Инструкция по эксплуатации онлайн [73/367] 48267

Gree HOME GMV Инструкция по эксплуатации онлайн [73/367] 48267
Dc Inverter VRF plus Water Heater Solution Service Manual CONTROL
69
c50Hz Once the pressure Pc55 is detected, the frequency of outdoor fan will change to 50 Hz
immediately.
Definition: under cooling mode, if the ambient temp 14 , the cooling is Hypothermy cooling.
Fan Control Under Hypothermy Cooling
Under Hypothermy cooling, high pressure is between 30 and 50 . If high pressure is 30 , the
frequency of fan will decrease 1 Hz; If high pressure is 25 , the frequency of fan will change to be 0 Hz. If high
pressure is 50 , frequency of fan will increase 1 Hz; If high pressure is 53 , frequency of fan will increase
5 Hz. Once the pressure Pc55 is detected, the frequency of outdoor fan will change to 50 Hz immediately.The
fan speed under Hypothermy cooling is not adjusted periodically.
Under cooling mode, if the ambient temp >14 ,frequency is adjusted according to the below table.
Inspect the discharge pressure after the unit has been running for 3min. Adjust the frequency of fan every 2
periods according to the discharge pressure and stabilize the pressure within optimized range. If the pressure is
higher or lower than the specified range, adjust the frequency accordingly.
Cooling and Water Heating ModeDetect discharge pressure after 3min startup of the unit. Fan frequency is
adjusted every 2 periods according to the average value of discharge pressure so that the pressure can be
restrained within optimized range. If the pressure is higher than the setting range, the frequency of outdoor fan will
increase; If the pressure is lower than the setting range, the frequency of outdoor fan will decrease.
Initialization: Initial frequency of fan is determined by the ambient temp during the 3min after the startup of the
unit which is applicable when the unit is just started or the mode of the unit is shifted or the frequency will be
adjusted according to pressure. T in the below table means the min value. of ambient temp and water temp.
Output P25%
25%P
40%
40%P
60%
60%P
80%
P80%
Fan
Frequency
T0 0Hz 0Hz 1Hz 1Hz 1Hz
0T12 0Hz 1Hz 1Hz 1Hz 5Hz
12T20 10Hz 15Hz 20Hz 23Hz 25Hz
20T35 28Hz 33Hz 38Hz 44Hz Max.
35T40 36Hz 38Hz 41Hz 44Hz Max.
T40 Max. Max. Max. Max. Max.
Remarksmax.value is 50Hz
Fan Control after 3min
Frequency of fan is adjusted in 3min later according to the change of pressure.
The max.frequency of fan is 50HZ and the min. is in the below table.
The relationship between lowest fan speed and capacity of compressor output is as follows:
Output Frequency of
Compressor X
X68 67X50 49X40 39X30 X<30
Fan Frequency 40 HZ 30Hz 20hz 15 Hz 5 HZ
Detect discharge pressure after 3min startup of the unit. Fan frequency is adjusted every 2 periods according
to the average value of discharge pressure so that the pressure can be restrained within optimized range. If the
pressure is higher than the setting range, the frequency of outdoor fan will increase; If the pressure is lower than
the setting range, the frequency of outdoor fan will decrease.
Heating Mode:
Initialization: The fan runs at initial speed acoording to ambient temp for 3 min which is applicable when the
unit is just started or the mode of the unit is shifted or the frequency will be adjusted according to pressure.
When calculated capacity of the complete unit 40

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