Carrier 50SX024-060 Ð Superheat Charging Table, 50SS018, Ð Superheat Charging Table, 50SS024

c. Suction-tube temperature (F) at low-side service ®tting.

d. Suction (low-side) pressure (psig).

5.Using ``Superheat Charging Table,'' compare outdoor-air temperature (F db) with evaporator inlet-air temperature (F wb) to determine desired system operating superheat temperature. See Tables 5A-5I and 6A-6F.

6.Using ``Required Suction-Tube Temperature (F)'' table, compare desired superheat temperature with suc- tion (low-side) operating pressure (psig) to determine proper suction-tube temperature. See Table 7.

7.Compare actual suction-tube temperature with proper suction-tube temperature. Using a tolerance of ±3° F, add refrigerant if actual temperature is more than 3° F higher than proper suction-tube temperature, or remove refrig- erant if actual temperature is more than 3° F lower than required suction-tube temperature.

NOTE: If the problem causing the inaccurate readings is a refrigerant leak, refer to Check for Refrigerant Leaks sec- tion on page 27.

Table 5A Ð Superheat Charging Table, 50SS018

TEMP (F)									EVAP AIR Ð CFM
										600
AIR ENT
								Evap Air Ð Ewb (F)
	COND
			54	56	58	60	62		64		66	68	70	72	74	76
65		SPH	17.3	18.5	19.6	20.8	24.2		27.7		28.5	29.3	29.3	29.3	29.3	29.3
70		SPH	13.8	14.9	16.1	17.3	20.7		24.1		25.7	27.3	27.3	27.3	27.3	27.3
75		SPH	10.2	11.4	12.5	13.7	17.1		20.6		22.9	25.2	25.2	25.2	25.2	25.2
80		SPH	8.2	8.8	9.5	10.2	13.6		17.0		20.1	23.1	23.9	24.1	25.4	26.1
85		SPH	6.1	6.2	6.5	6.6	10.0		13.5		17.3	21.1	22.6	24.1	25.6	27.1
90		SPH	*	*	*	5.0	8.1		11.4		15.2	19.0	20.5	22.0	23.5	25.0
95		SPH	*	*	*	*	6.2		9.4		13.2	17.0	18.5	20.0	21.5	23.0
100		SPH	*	*	*	*	*		7.3		11.1	14.9	17.2	19.5	21.7	24.0
105		SPH	*	*	*	*	*		5.3		9.1	12.9	15.9	18.9	21.9	24.9
110		SPH	*	*	*	*	*		*		6.7	10.8	13.8	16.8	19.8	22.8
115		SPH	*	*	*	*	*		*		*	8.8	11.8	14.8	17.8	20.8

LEGEND	*Do not attempt to charge system under these conditions Ð refrigerant slugging may occur.
Ewb Ð Entering Wet Bulb
SPH Ð Superheat at Compressor (F)

Table 5B Ð Superheat Charging Table, 50SS024

TEMP (F)									EVAP AIR Ð CFM
										800
AIR ENT
								Evap Air Ð Ewb (F)
	COND
			54	56	58	60	62		64		66	68	70	72	74	76
65		SPH	18.2	19.0	19.9	20.7	22.5		24.2		25.1	25.9	26.6	27.2	27.9	28.6
70		SPH	17.1	17.6	18.1	18.6	20.4		22.1		23.0	23.9	24.9	26.0	27.1	28.1
75		SPH	16.0	16.2	16.4	16.6	18.3		20.1		21.0	21.8	23.3	24.8	26.2	27.7
80		SPH	14.8	14.7	14.6	14.5	16.3		18.0		19.7	21.3	22.4	23.5	24.6	25.8
85		SPH	13.7	13.3	12.9	12.5	14.3		16.0		18.4	20.7	21.5	22.3	23.1	23.8
90		SPH	11.1	10.9	10.7	10.4	12.2		13.9		16.3	18.7	19.9	21.0	22.2	23.4
95		SPH	8.5	8.4	8.4	8.4	10.1		11.9		14.3	16.6	18.2	19.8	21.4	23.0
100		SPH	7.3	7.5	7.7	7.9	8.9		9.9		12.2	14.6	16.6	18.6	20.6	22.6
105		SPH	6.2	6.6	6.9	7.3	7.6		7.8		10.2	12.5	14.9	17.3	19.7	22.1
110		SPH	*	*	*	5.3	5.5		5.8		8.1	10.5	13.3	16.1	18.9	21.7
115		SPH	*	*	*	*	*		*		6.1	8.4	11.6	14.9	18.1	21.3

LEGEND	*Do not attempt to charge system under these conditions Ð refrigerant slugging may occur.
Ewb Ð Entering Wet Bulb
SPH Ð Superheat at Compressor (F)

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