Carrier 38HDL018-060 specifications Outdoor Indoor Coil Entering AIR F WB Temp F, Superheat

SUBCOOLING METHOD (COOLING, TXV) Ð To check and adjust charge during cooling season, use Tables 6A and

6B and the following procedure:

1.Operate unit a minimum of 15 minutes before checking charge.

2.Measure liquid line temperature near liquid line service valve, and measure liquid pressure at liquid line service valve. Use a digital thermometer for all temperature measurements. DO NOT use mercury or dial-type thermometers.

3.Refer to Tables 6A and 6B. Find temperature point at which the required subcooling temperature intersects the mea- sured liquid line pressure.

4.If the measured liquid line temperature does not agree with the required liquid line temperature, ADD refriger- ant to lower the temperature, or REMOVE refrigerant to raise the temperature (allow a tolerance of ± 3 F).

Table 4A Ð Superheat Charging Table Ð English

(Superheat Entering Suction Service Valve)

OUTDOOR			INDOOR COIL ENTERING AIR (F) WB
TEMP (F)	50	52		54	56	58	60	62	64	66	68	70	72	74	76
55	9	12		14	17	20	23	26	29	32	35	37	40	42	45
60	7	10		12	15	18	21	24	27	30	33	35	38	40	43
65	*	6		10	13	16	19	21	24	27	30	33	36	38	41
70	*	*		7	10	13	16	19	21	24	27	30	33	36	39
75	*	*		*	6	9	12	15	18	21	24	28	31	34	37
80	*	*		*	*	5	8	12	15	18	21	25	28	31	35
85	*	*		*	*	*	*	8	11	15	19	22	26	30	33
90	*	*		*	*	*	*	5	9	13	16	20	24	27	31
95	*	*		*	*	*	*	*	6	10	14	18	22	25	29
100	*	*		*	*	*	*	*	*	8	12	15	20	23	27
105	*	*		*	*	*	*	*	*	5	9	13	17	22	26
110	*	*		*	*	*	*	*	*	*	6	11	15	20	25
115	*	*		*	*	*	*	*	*	*	*	8	14	18	23

LEGEND

WB Ð Wet Bulb

*Do not attempt to charge system under these conditions or refrig- erant slugging may occur.

Table 4B Ð Superheat Charging Table Ð SI (Superheat Entering Suction Service Valve)

OUTDOOR			INDOOR COIL ENTERING AIR (C) WB
TEMP (C)	10	11		12	13	14	16	17	18	19	20	21	22		23	24
13	5	7		8	9	11	13	14	16	18	19	21	22		23	25
16	4	6		7	8	10	12	13	15	17	18	19	21		22	24
18	*	3		6	7	9	11	12	13	15	17	18	20		21	23
21	*	*		4	6	7	9	11	12	13	15	17	18		20	22
24	*	*		*	3	5	7	8	10	12	13	16	17		19	21
27	*	*		*	*	3	4	7	8	10	12	14	16		17	19
29	*	*		*	*	*	*	4	6	8	11	12	14		17	18
32	*	*		*	*	*	*	3	5	7	9	11	13		15	17
35	*	*		*	*	*	*	*	3	6	8	10	12		14	16
38	*	*		*	*	*	*	*	*	4	7	8	11	13		15
41	*	*		*	*	*	*	*	*	3	5	7	9		12	14
43	*	*		*	*	*	*	*	*	*	3	6	8		11	14
46	*	*		*	*	*	*	*	*	*	*	4	8		10	13

LEGEND

WB Ð Wet Bulb

*Do not attempt to charge system under these conditions or refrig- erant slugging may occur.

Table 5A Ð Required Suction-Tube Temperature (F)

Ð English (Entering Suction Service Valve)

SUPERHEAT	SUCTION PRESSURE AT SERVICE PORT (psig)
TEMP (F)	61.5	64.2	67.1	70.0	73.0	76.0	79.2	82.4	85.7
0	35	36	39	41	43	45	47	49	51
2	37	39	41	43	45	47	49	51	53
4	39	41	43	45	47	49	51	53	55
6	41	43	45	47	49	51	53	55	57
8	43	45	47	49	51	53	55	57	59
10	45	47	49	51	53	55	57	59	61
12	47	49	51	53	55	57	59	61	63
14	49	51	53	55	57	59	61	63	65
16	51	53	55	57	59	61	63	65	67
18	53	55	57	59	61	63	65	67	69
20	55	57	59	61	63	65	67	69	71
22	57	59	61	63	65	67	69	71	73
24	59	61	63	65	67	69	71	73	75
26	61	63	65	67	69	71	73	75	77
28	63	65	67	69	71	73	75	77	79
30	65	67	69	71	73	75	77	79	81
32	67	69	71	73	75	77	79	81	83
34	69	71	73	75	77	79	81	83	85
36	71	73	75	77	79	81	83	85	87
38	73	75	77	79	81	83	85	87	89
40	75	77	79	81	83	85	87	89	91

Table 5B Ð Required Suction-Tube Temperature (C)

Ð SI (Entering Suction Service Valve)

OUTDOOR	SUCTION PRESSURE AT SERVICE PORT (kPa)
TEMP (C)	424	443	463	483	503	524	546	568	591
0	2	3	4	5	6	7	8	9	11
1	3	4	5	6	7	8	9	11	12
2	4	5	6	7	8	9	11	12	13
3	5	6	7	8	9	11	12	13	14
4	6	7	8	9	11	12	13	14	15
6	7	8	9	11	12	13	14	15	16
7	8	9	11	12	13	14	15	16	17
8	9	11	12	13	14	15	16	17	18
9	11	12	13	14	15	16	17	18	19
10	12	13	14	15	16	17	18	19	21
11	13	14	15	16	17	18	19	21	22
12	14	15	16	17	18	19	21	22	23
13	15	16	17	18	19	21	22	23	24
14	16	17	18	19	21	22	23	24	25
16	17	18	19	21	22	23	24	25	26
17	18	19	21	22	23	24	25	26	27
18	19	21	22	23	24	25	26	27	28
19	21	22	23	24	25	26	27	28	29
20	22	23	24	25	26	27	28	29	31
21	23	24	25	26	27	28	29	31	32
22	24	25	26	27	28	29	31	32	33

9