Carrier 38HDR018-060, 38HDF018-036 specifications

Table 4 — Pressure vs. Temperature Chart — Puron® Refrigerant (R-410A)

PRESSURE	TEMPERATURE	PRESSURE	TEMPERATURE	PRESSURE	TEMPERATURE	PRESSURE	TEMPERATURE	PRESSURE	TEMPERATURE	PRESSURE	TEMPERATURE
PSIG	°F	PSIG	°F	PSIG	°F	PSIG	°F	PSIG	°F	PSIG	°F
12	–37.7	114	37.8	216	74.3	318	100.2	420	120.7	522	137.6
14	–34.7	116	38.7	218	74.9	320	100.7	422	121.0	524	137.9
16	–32.0	118	39.5	220	75.5	322	101.1	424	121.4	526	138.3
18	–29.4	120	40.5	222	76.1	324	101.6	426	121.7	528	138.6
20	–26.9	122	41.3	224	76.7	326	102.0	428	122.1	530	138.9
22	–24.5	124	42.2	226	77.2	328	102.4	430	122.5	532	139.2
24	–22.2	126	43.0	228	77.8	330	102.9	432	122.8	534	139.5
26	–20.0	128	43.8	230	78.4	332	103.3	434	123.2	536	139.8
28	–17.9	130	44.7	232	78.9	334	103.7	436	123.5	538	140.1
30	–15.8	132	45.5	234	79.5	336	104.2	438	123.9	540	140.4
32	–13.8	134	46.3	236	80.0	338	104.6	440	124.2	544	141.0
34	–11.9	136	47.1	238	80.6	340	105.1	442	124.6	548	141.6
36	–10.1	138	47.9	240	81.1	342	105.4	444	124.9	552	142.1
38	–8.3	140	48.7	242	81.6	344	105.8	446	125.3	556	142.7
40	–6.5	142	49.5	244	82.2	346	106.3	448	125.6	560	143.3
42	–4.5	144	50.3	246	82.7	348	106.6	450	126.0	564	143.9
44	–3.2	146	51.1	248	83.3	350	107.1	452	126.3	568	144.5
46	–1.6	148	51.8	250	83.8	352	107.5	454	126.6	572	145.0
48	0.0	150	52.5	252	84.3	354	107.9	456	127.0	576	145.6
50	1.5	152	53.3	254	84.8	356	108.3	458	127.3	580	146.2
52	3.0	154	54.0	256	85.4	358	108.8	460	127.7	584	146.7
54	4.5	156	54.8	258	85.9	360	109.2	462	128.0	588	147.3
56	5.9	158	55.5	260	86.4	362	109.6	464	128.3	592	147.9
58	7.3	160	56.2	262	86.9	364	110.0	466	128.7	596	148.4
60	8.6	162	57.0	264	87.4	366	110.4	468	129.0	600	149.0
62	10.0	164	57.7	266	87.9	368	110.8	470	129.3	604	149.5
64	11.3	166	58.4	268	88.4	370	111.2	472	129.7	608	150.1
66	12.6	168	59.0	270	88.9	372	111.6	474	130.0	612	150.6
68	13.8	170	59.8	272	89.4	374	112.0	476	130.3	616	151.2
70	15.1	172	60.5	274	89.9	376	112.4	478	130.7	620	151.7
72	16.3	174	61.1	276	90.4	378	112.6	480	131.0	624	152.3
74	17.5	176	61.8	278	90.9	380	113.1	482	131.3	628	152.8
76	18.7	178	62.5	280	91.4	382	113.5	484	131.6	632	153.4
78	19.8	180	63.1	282	91.9	384	113.9	486	132.0	636	153.9
80	21.0	182	63.8	284	92.4	386	114.3	488	132.3	640	154.5
82	22.1	184	64.5	286	92.8	388	114.7	490	132.6	644	155.0
84	23.2	186	65.1	288	93.3	390	115.0	492	132.9	648	155.5
86	24.3	188	65.8	290	93.8	392	115.5	494	133.3	652	156.1
88	25.4	190	66.4	292	94.3	394	115.8	496	133.6	656	156.6
90	26.4	192	67.0	294	94.8	396	116.2	498	133.9	660	157.1
92	27.4	194	67.7	296	95.2	398	116.6	500	134.0	664	157.7
94	28.5	196	68.3	298	95.7	400	117.0	502	134.5	668	158.2
96	29.5	198	68.9	300	96.2	402	117.3	504	134.8	672	158.7
98	30.5	200	69.5	302	96.6	404	117.7	506	135.2	676	159.2
100	31.2	202	70.1	304	97.1	406	118.1	508	135.5	680	159.8
102	32.2	204	70.7	306	97.5	408	118.5	510	135.8	684	160.3
104	33.2	206	71.4	308	98.0	410	118.8	512	136.1	688	160.8
106	34.1	208	72.0	310	98.4	412	119.2	514	136.4	692	161.3
108	35.1	210	72.6	312	98.9	414	119.6	516	136.7	696	161.8
110	35.5	212	73.2	314	99.3	416	119.9	518	137.0
112	36.9	214	73.8	316	99.7	418	120.3	520	137.3

Subcooling Method — For 38HDR units only, the sub- cooling method is used to check and adjust charge during the cooling season. Refer to Table 5 and the following procedure:

NOTE: For use with residential fan coils and the 40QA060 under ceiling unit only.

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

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

3.Refer to Table 5. Find the temperature point at which the required subcooling temperature intersects the measured 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).

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