Carrier 50ZHA024-060 instruction manual Required Subcooling, Required Liquid Line Temperature

Table 4—Required Subcooling

REQUIRED SUBCOOLING °F (°C)

Model Size			Outdoor Ambient Temperature
	75 (24)	82	(28)	85 (29)	95 (35)	105 (41)
048	17.5 (9.7)	17 (9.4)		16.5 (9.2)	16 8.9)	14 (7.8)
060	21 (11.7)	20.5	(11.4)	20 (11.1)	19 (10.6)	16 (8.9)

Table 5—Required Liquid Line Temperature

REQUIRED LIQUID LINE TEMPERATURE FOR A SPECIFIC SUBCOOLING (R-22)

Pressure (psig)		Required Subcooling (°F)				Pressure (kPa)		Required Subcooling (°C)
	5		10	15	20		3		6	8	11
134	71		66	61	56	924	24		22	19	16
141	74		69	64	59	972	26		23	21	18
156	80		75	70	65	1075	30		27	24	21
163	83		78	73	68	1124	31		28	26	23
170	86		81	76	71	1172	33		30	27	24
177	89		84	79	74	1220	34		31	29	26
184	91		86	81	76	1268	36		33	30	27
191	94		89	84	79	1317	37		34	31	29
198	96		91	86	81	1365	38		36	33	30
205	98		93	88	83	1413	40		37	34	31
213	101		96	91	86	1468	41		38	36	33
221	104		99	94	89	1524	43		40	37	34
229	106		101	96	91	1579	44		41	38	36
237	108		103	98	93	1634	45		42	40	37
245	111		106	101	96	1689	47		44	41	38
253	113		108	103	98	1744	48		45	42	40
262	116		111	106	101	1806	49		46	44	41
271	118		113	108	103	1868	51		48	45	42
280	121		116	111	106	1930	52		49	46	44
289	123		118	113	108	1992	53		51	48	45
298	125		120	115	110	2054	55		52	49	46
307	128		123	118	113	2116	56		53	50	48
317	130		125	120	115	2185	57		54	52	49
327	132		127	122	117	2254	59		56	53	50
337	135		130	125	120	2323	60		57	54	52
347	137		132	127	122	2392	61		58	56	53
357	139		134	129	124	2461	62		60	57	54
367	142		137	132	127	2530	64		61	58	55
280	121		116	111	106	1930	52		49	46	44
289	123		118	113	108	1992	53		51	48	45
298	125		120	115	110	2054	55		52	49	46
307	128		123	118	113	2116	56		53	50	48
317	130		125	120	115	2185	57		54	52	49
327	132		127	122	117	2254	59		56	53	50
337	135		130	125	120	2323	60		57	54	52
347	137		132	127	122	2392	61		58	56	53
357	139		134	129	124	2461	62		60	57	54
367	142		137	132	127	2530	64		61	58	55

b.Inspect for oil at all refrigerant tubing connections and on unit base. Detecting oil generally indicates a refrigerant leak. Leak-test all refrigerant tubing connections using electronic leak detector, or liquid-soap solution. If a refrig- erant leak is detected, see following Check for Refrigerant Leaks section.

c.Inspect all field- and factory-wiring connections. Be sure that connections are completed and tight. Ensure wires do not contact refrigerant tubing or sheet metal edges.

d.Inspect coil fins. If damaged during shipping and handling, carefully straighten fins with a fin comb.

3.Verify the following conditions:

a.Make sure that outdoor-fan blade is correctly positioned in fan orifice. Top edge of blade should be 3.125 in. down from outdoor coil outlet grille (size 024–048, See Fig. 12) or hub should be 0.708-in. away from motor end bell (size 060, See Fig. 13). See Outdoor Fan Adjustment section.

b.Make sure that air filter is in place.

c.Make sure that condensate drain trap is filled with water to ensure proper drainage.

d.Make sure that all tools and miscellaneous loose parts have been removed.

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