Carrier 50ZH024-060 Heating Mode Charge, ÐIndoor Airflow and Airflow Adjustments

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Fig. 15AÐTypical Unit Electrical Diagram (208/230±1±60)

charts to determine what the suction temperature should be. If suction temperature is high, add refrigerant. If suction temperature is low, carefully recover some of the charge. Recheck the suction pressure as charge is adjusted.

Example: (See Fig. 16)

Outdoor Temperature Ð85°F

Suction PressureÐ74 psig

Suction Temperature should beÐ60°F

NoteÐSuction Temperature may vary +/- 5°F.

HEATING MODE CHARGE

Do not attempt to adjust charge by cooling methods while in heat pump heating mode. Recover refrigerant and weigh in according to unit data plate refrigerant data.

Step 4ÐIndoor Airflow and Airflow Adjustments

NOTE: For cooling operation, the recommended airflow is 350 to 450 cfm per each 12,000 Btuh of rated cooling capacity.

Table 4 shows dry coil air delivery for horizontal discharge units. Tables 5-7 show pressure drops.

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