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| FILE NO. |
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| Item |
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| Operation flow and applicable data, etc. | Description | ||||||||||||||||||||||
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12. Pulse |
| This function controls throttle amount of the | 1) When starting the operation, move the | |||||||||||||||||||||||||||
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| Modulating |
| refrigerant in the refrigerating cycle. | valve once until it fits to the stopper. | ||||||||||||||||||||||||
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| valve (P.M.V.) |
| According to operating status of the air conditioner, | (Initialize) | ||||||||||||||||||||||||
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| control |
| this function also controls the open degree of valve | * In this time, “Click” sound may be | ||||||||||||||||||||||||
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| with an expansion valve with pulse Modulation. | heard. | |||||||||||||||||||
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| 2) Adjust the open degree of valve by super |
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| heat amount. (SH control) |
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| 3) If the discharge temperature was exces- |
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| sively up, adjust the open degree of valve |
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| Starting up |
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| so that it is in the range of set tempera- | |||||||||
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| ture. (Discharge temp. control) |
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| Initialize |
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| 4) When defrost operation is performed, the | ||||||
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| open degree of valve is adjusted accord- | ||||||||
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| ing to each setup conditions during |
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| preparation for defrost and during defrost |
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| Move to |
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| operation | ||||||||
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| initial position |
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| 5) When operation is OFF by the remote |
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| controller or when compressor is OFF by |
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| Compressor ON |
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| room temperature control, the open | |||||||||
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| degree of valve is adjusted to the stop |
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| position. |
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| SH control |
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| Td |
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| release control |
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| PMV open degree control |
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| Turn OFF by |
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| Compressor Stop by |
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| Defrosting |
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| "Room Temperature |
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| remote controller |
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| operation |
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| Control" |
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| Move to "Stop |
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| Move to "Defrost |
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| Position" (Setup |
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| Position" (Setup |
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| from factory) |
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| from factory) |
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*SH (Super Heat amount) =
Ts (Temperature of suction pipe of the compressor) –
Tc or Te (Heat exchanger temperature at evaporation side)
*PMV: Pulse Modulating Valve
– 39 –