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'14 • KX-SM-204
(9) Pump-down operation by external input
If an error stop is raised by an external input by refrigerant leaking alarm unit, the pump-down operation is performed at the
outdoor unit side in order to prevent the refrigerant from leaking.
They are local arrangements.
①
Refrigerant leaking alarm unit
②
Valve to shut liquid pipe
③
Valve to shut gas pipe
Valves of
② and ③ should be selected what the pressure loss of refrigerant piping doesn’t increase.
(a) Status : Pump-down operation
(i) Starting condition
①
When the external input function is assigned to “0: External operation input” and the external input terminal is
open (by refrigerant leaking alarm unit).
②
If the pump-down control is valid when the error stop is raised by the setting on -segment. ([P] = “”)
(ii) Contents of control
①
ON is output on CnY, and the liquid service valve is shut down if it is connected on CnY.
②
The pump-down operation for replacement is performed.
(iii) Ending condition
①
When starting conditions are lost.
②
When the pump-down operation has ended.
(b) Status : Emergency stop operation
(i) Starting condition
①
When the pump-down operation has ended in the status .
(ii) Contents of control
①
ON is output to CnZ, and the gas service valve is shut down if it is connected on CnZ.
②
Operation stops with the error full stop. ([E] is displayed.)
(iii) Ending tion
①
When starting conditions for the status are lost.
②
State of error continues for minutes after the error full stop. It cannot be reset in this condition from the remote
control. If the starting conditions for Status are not yet established later, this can be reset by the remote control
inspection reset.
6. New funcons
1
Pump down external input
Emergency call =>
External operaon input : Opened
Alarm unit
Gas leakage
Pump down
operaon
Activate by 7SEG:[P19]=“1”
E63
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