5ACV - Defrost Operation
Transcript of 5ACV - Defrost Operation
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Defrost Operation
5ACV030CR
Defrost will start if the following conditions are met for 3 minutes:-
a. Continuous compressor operation in heating mode for at least thedefrosting interval duration (D4 setting factory default 45mins)b. Inv outdoor coil outlet temperature < 0C (D1 setting) orc. Entering water temperature > 18C
Defrost process
Defrost terminateWhen either of the below conditions is met, the defrost operation will beterminated:-
a. Inv outdoor coil outlet temperature > 14Cb. Defrost time exceed 10 mins.
ON
ON
Variable drivefre uenc
Variable
speedfan
4-way valve(Variabledrive
70Hz
End Resumeheating mode
30Hz 30Hz
Start
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5ACV055CR & 5ACV075CR
Defrost will start if the following conditions are met for 3 minutes:-a. Continuous compressor operation in heating mode for at least the
defrosting interval duration (D4 setting factory default 45mins)
b. Inv outdoor coil outlet temperature < 0C (D1 setting) orc. Entering water temperature > 18C
Defrost process
Defrost terminateWhen either of the below conditions is met, the defrost operation will beterminated:-
a. Inv outdoor coil outlet temperature > 14Cb. Defrost time exceed 10 mins.c. Entering water temperature < 10C
ON
ON
Variable drivefrequency
Variablespeedfan
4-way valve(Variabledrive
90Hz
End Resumeheating mode
30Hz 30Hz
Start
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Variable drivecom ressor
Starts defrosting
Variable
speedfan
ON
ON
ON
4-way valve(Variabledrive
2 seconds
10 seconds15 seconds30 seconds2 seconds
Targeted frequency 70Hz
2 seconds
Ends defrosting Starts heatingmode
High fan
Fixed drivecompressor
Starts defrosting
Fixedspeedfan
ON
ON
ON
4-wayvalve(Fixeddrive)
2 seconds
10 seconds15 seconds30 seconds2 seconds
2 seconds
Ends defrosting Starts heating
mode
High fan
5ACV100CR & 5ACV135CR
Defrost will start if the following conditions are met for 3 minutes:-a. Continuous compressor operation in heating mode for at least the
defrosting interval duration (D4 setting factory default 45mins)
b. Inv and fixed drive outdoor coil outlet temperature < -8C (D1 setting) orc. Entering water temperature > 23C ord. Differential of ambient and coil temperature > 4C
Defrost processInverter drive
Fixed drive
Defrost terminateWhen either of the below conditions is met, the defrost operation will beterminated:-
a. Inv or fixed drive outdoor coil outlet temperature > 14Cb. Defrost time exceed 10 mins.c. Entering water temperature < 12C
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ON
ON
Variable compfre uenc
System 1soutdoor fan
System 1s 4-way valve
90Hz
EndResumeheating mode
Start
System 1sfixed comp
ON
Fixed drivecom ressor
Start
Fixedspeedfan
ON
ON
ON
4-wayvalve(Fixeddrive)
60s
EndResumeheatin mode
60s
5ACV210CR
Defrost will start if the following conditions are met for 3 minutes:-a. Continuous compressor operation in heating mode for at least the
defrosting interval duration (D4 setting factory default 45mins)
b. Inv and fixed drive outdoor coil outlet temperature < -8C (D1 setting) orc. Entering water temperature > 18C
Defrost processSystem 1 (with Inverter Compressor)
System 2
Defrost terminateWhen either of the below conditions is met, the defrost operation will beterminated:-
a. Inv or fixed drive outdoor coil outlet temperature > 14Cb. Defrost time exceed 10 mins.c. Entering water temperature < 10C
30Hz 30Hz