Lennox Collection XC21 System Installation Instructions Manual page 35

Table 7. Ambient Sensor (RT13) Temperature / Resistance Range
Degrees
Resistance
Fahrenheit
136.3 2680
133.1 2859
130.1 3040
127.3 3223
124.7 3407
122.1 3592
119.7 3779
117.5 3968
115.3 4159
113.2 4351
111.2 4544
109.3 4740
107.4 4937
105.6 5136
103.9 5336
102.3 5539
100.6 5743
99.1 5949
97.6 6157
96.1 6367
94.7 6578
93.3 6792
92.0 7007
90.6 7225
89.4 7444
88.1 7666
86.9 7890
85.7 8115
84.5 8343
83.4 8573
82.3 8806
81.2 9040
80.1 9277
79.0 9516
78.0 9757
77.0 10001
76.0 10247
75.0 10496
74.1 10747
73.1 11000
72.2 11256
71.3 11515
70.4 11776
69.5 12040
68.6 12306
67.7 12575
66.9 12847
66.0 13122
65.2 13400
64.4 13681
63.6 13964
62.8 14251
62.0 14540
61.2 14833
60.5 15129
59.7 15428
59.0 15730
58.2 16036
57.5 16345
Degrees
Resistance
Fahrenheit
56.8 16657
56.0 16973
55.3 17293
54.6 17616
53.9 17942
53.2 18273
52.5 18607
51.9 18945
51.2 19287
50.5 19633
49.9 19982
49.2 20336
48.5 20695
47.9 21057
47.3 21424
46.6 21795
46.0 22171
45.4 22551
44.7 22936
44.1 23326
43.5 23720
42.9 24120
42.3 24525
41.7 24934
41.1 25349
40.5 25769
39.9 26195
39.3 26626
38.7 27063
38.1 27505
37.5 27954
37.0 28408
36.4 28868
35.8 29335
35.2 29808
34.7 30288
34.1 30774
33.5 31267
33.0 31766
32.4 32273
31.9 32787
31.3 33309
30.7 33837
30.2 34374
29.6 34918
29.1 35471
28.6 36031
28.0 36600
27.5 37177
26.9 37764
26.4 38359
25.8 38963
25.3 39577
24.8 40200
24.2 40833
23.7 41476
23.2 42130
22.6 42794
22.1 43468
Page 35
Degrees
Resistance
Fahrenheit
21.6 44154
21.0 44851
20.5 45560
20.0 46281
19.4 47014
18.9 47759
18.4 48517
17.8 49289
17.3 50074
16.8 50873
16.3 51686
15.7 52514
15.2 53356
14.7 54215
14.1 55089
13.6 55979
13.1 56887
12.5 57811
12.0 58754
11.5 59715
11.0 60694
10.4 61693
9.9 62712
9.3 63752
8.8 64812
8.3 65895
7.7 67000
7.2 68128
6.7 69281
6.1 70458
5.6 71661
5.0 72890
4.5 74147
3.9 75431
3.4 76745
2.8 78090
2.3 79465
1.7 80873
1.2 82314
0.6 83790
0.0 85302
−0.5 86852
−1.1 88440
−1.7 90068
−2.2 91738
−2.8 93452
−3.4 95211
−4.0 97016
−4.6 98870
−5.2 100775
−5.7 102733
−6.3 104746
−6.9 106817
−7.5 108948
−8.2 111141
−8.8 113400
−9.4 115727
−10.0 118126
−10.6 120600
Degrees
Resistance
Fahrenheit
−11.3 123152
−11.9 125787
−12.6 128508
−13.2 131320
−13.9 134227
−14.5 137234
−15.2 140347
−15.9 143571
−16.5 146913
−17.2 150378
−17.9 153974
−18.6 157708
−19.3 161588
−20.1 165624
−20.8 169824
−21.5 174200
−22.3 178762
−23.0 183522
−23.8 188493
−24.6 193691
−25.4 199130
−26.2 204829
−27.0 210805
−27.8 217080
−28.7 223677
−29.5 230621
−30.4 237941
−31.3 245667
−32.2 253834
−33.2 262482
−34.1 271655
−35.1 281400
−36.1 291774
−37.1 302840
−38.2 314669
−39.2 327343
XC21 SERIES