Daikin DP14UM Service Instructions Manual page 9

SYSTEM OPERATION
Typical Package Cooling or Package Gas
Either a thermostatic expansion valve or restrictor orifice assembly may be used depending on model, refer to the parts
catalog for the model being serviced.
Restrictor Orifice Assembly in Cooling Operation
In the cooling mode, the orifice is pushed into its seat forcing refrigerant to flow through the metered hole in the center
of the orifice.
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