Lenox Elite Series, XC14 installation instructions Use Weigh-Inmethod, 40ºF

START: Measure outdoor ambient temperature			40ºF
			and
USE WEIGH-IN METHOD			ABOVE
Weigh-in or remove refrigerant		ABOVE or
based upon line length	39ºF and	BELOW

BELOW

1. Confirm proper airflow across coil using figure 20.
2. Compare unit pressures with table 4, Normal
	Operating Pressures.
3. Use SUPERHEAT to correctly charge unit or to
	verify the charge is correct.
4.	Set thermostat to call for heat (must have a cooling
	load between 70-80ºF (21−26ºC)
5.	Connect gauge set.
6.	When heat demand is satisfied, set thermostat to
	call for cooling.
7.	Allow temperatures and pressures to stabilize.

If refrigerant is REMOVED, retest to confirm that unit is properly charged.

SHº (Superheat) Values (+/−5ºF)

		Wet Bulb (air entering indoor coil)
ºF*	50	52	54	56	58	60	62	64	66	68	70	72	74	76

4015 18 20 23 26 29 32 34 38 41 43 46 48 51

4513 16 18 21 24 27 30 33 36 39 41 44 46 49

5011 14 16 19 22 25 28 31 34 37 39 42 44 47

559 12 14 17 20 23 27 30 33 36 38 40 42 44

607 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	16	21	24	28
105	-	-	-	-	-	-	-	-	5	9	13	17	22	26
110	-	-	-	-	-	-	-	-	-	6	11	15	20	25
115	-	-	-	-	-	-	-	-	-	-	8	14	18	24

* Dry−bulb temperature (ºF) of entering outdoor ambient air.

8.	Measure the suction line pressure and use the use
	value to determine saturation temperature (table
	3):
	SATº =_________
9.	Record suction line temperature:
	VAPº =_________
10.	Subtract to determine superheat (SHº):
	VAPº − _____ SATº ______ = SHº______
11.	Record the wet bulb temperature (air entering
	indoor coil):
	WB =_______
12.	Record outdoor ambient temperature.
13.	Compare results with table to the left.

NOTE − Do not attempt to charge system where a dash appears, system could be overcharged. Superheat is taken at suction line service port. Suction line superheat must never be less than 5ºF at the suction line service port.

If value is LESS than shown, then REMOVE refrigerant.

MORE or

LESS

If value is MORE than shown, then ADD refrigerant.

If refrigerant is ADDED, retest to confirm that unit is properly charged.

Figure 24. Using HFC−410A Superheat (Fixed Orifice) Charge Method

Table 3. HFC−410A Temperature (°F) − Pressure (Psig)

°F	Psig	°F	Psig	°F	Psig	°F	Psig	°F	Psig	°F	Psig	°F	Psig	°F	Psig
32	100.8	48	137.1	63	178.5	79	231.6	94	290.8	110	365.0	125	445.9	141	545.6
33	102.9	49	139.6	64	181.6	80	235.3	95	295.1	111	370.0	126	451.8	142	552.3
34	105.0	50	142.2	65	184.3	81	239.0	96	299.4	112	375.1	127	457.6	143	559.1
35	107.1	51	144.8	66	187.7	82	242.7	97	303.8	113	380.2	128	463.5	144	565.9
36	109.2	52	147.4	67	190.9	83	246.5	98	308.2	114	385.4	129	469.5	145	572.8
37	111.4	53	150.1	68	194.1	84	250.3	99	312.7	115	390.7	130	475.6	146	579.8
38	113.6	54	152.8	69	197.3	85	254.1	100	317.2	116	396.0	131	481.6	147	586.8
39	115.8	55	155.5	70	200.6	86	258.0	101	321.8	117	401.3	132	487.8	148	593.8
40	118.0	56	158.2	71	203.9	87	262.0	102	326.4	118	406.7	133	494.0	149	601.0
41	120.3	57	161.0	72	207.2	88	266.0	103	331.0	119	412.2	134	500.2	150	608.1
42	122.6	58	163.9	73	210.6	89	270.0	104	335.7	120	417.7	135	506.5	151	615.4
43	125.0	59	166.7	74	214.0	90	274.1	105	340.5	121	423.2	136	512.9	152	622.7
44	127.3	60	169.6	75	217.4	91	278.2	106	345.3	122	428.8	137	519.3	153	630.1
45	129.7	61	172.6	76	220.9	92	282.3	107	350.1	123	434.5	138	525.8	154	637.5
46	132.2	62	175.4	77	224.4	93	286.5	108	355.0	124	440.2	139	532.4	155	645.0
47	134.6			78	228.0			109	360.0			140	539.0

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XC14 SERIES