37
R e s i d e n t i a l H & V - 6 0 H z H F C - 4 1 0 A
R e v : O c t o b e r 5 , 2 0 2 1
c l i m a t e m a s t e r.c o m
Safety Features - CXM Controls
CXM Thermostat Details
Thermostat Compatibility -
Most all heat pump thermostats
can be used with the CXM control.
However Heat/Cool stats
are NOT compatible with the CXM.
Anticipation Leakage Current -
Maximum leakage current
for "Y" is 50 mA and for "W" is 20mA. Triacs can be used
if leakage current is less than above. Thermostats with
anticipators can be used if anticipation current is less than
that specified above.
Thermostat Signals -
• "Y" and "W" have a 1 second recognition time when being
activated or being removed.
• "O" and "G" are direct pass through signals but are moni-
tored by the micro processor.
• "R" and "C" are from the transformer.
• "AL1" and "AL2" originate from the alarm relay.
• "A" is paralleled with the compressor output for use with
well water solenoid valves.
• The "Y" 1/4" quick connect is a connection point to the
"Y" input terminal P1 for factory use. This "Y" terminal can
be used to drive panel mounted relays such as the loop
pump relay.
Table 7: Nominal resistance at various temperatures
Temp (ºC)
Temp (ºF)
Resistance
(kOhm)
Temp (ºC) Temp (ºF)
Resistance
(kOhm)
-17.8
0.0
85.34
55
131.0
2.99
-17.5
0.5
84.00
56
132.8
2.88
-16.9
1.5
81.38
57
134.6
2.77
-12
10.4
61.70
58
136.4
2.67
-11
12.2
58.40
59
138.2
2.58
-10
14.0
55.30
60
140.0
2.49
-9
15.8
52.38
61
141.8
2.40
-8
17.6
49.64
62
143.6
2.32
-7
19.4
47.05
63
145.4
2.23
-6
21.2
44.61
64
147.2
2.16
-5
23.0
42.32
65
149.0
2.08
-4
24.8
40.15
66
150.8
2.01
-3
26.6
38.11
67
152.6
1.94
-2
28.4
36.18
68
154.4
1.88
-1
30.2
34.37
69
156.2
1.81
0
32.0
32.65
70
158.0
1.75
1
33.8
31.03
71
159.8
1.69
2
35.6
29.50
72
161.6
1.64
3
37.4
28.05
73
163.4
1.58
4
39.2
26.69
74
165.2
1.53
5
41.0
25.39
75
167.0
1.48
6
42.8
24.17
76
168.8
1.43
7
44.6
23.02
77
170.6
1.39
8
46.4
21.92
78
172.4
1.34
9
48.2
20.88
79
174.2
1.30
10
50.0
19.90
80
176.0
1.26
11
51.8
18.97
81
177.8
1.22
12
53.6
18.09
82
179.6
1.18
13
55.4
17.26
83
181.4
1.14
14
57.2
16.46
84
183.2
1.10
15
59.0
15.71
85
185.0
1.07
16
60.8
15.00
86
186.8
1.04
17
62.6
14.32
87
188.6
1.01
18
64.4
13.68
88
190.4
0.97
19
66.2
13.07
89
192.2
0.94
20
68.0
12.49
90
194.0
0.92
21
69.8
11.94
91
195.8
0.89
22
71.6
11.42
92
197.6
0.86
23
73.4
10.92
93
199.4
0.84
24
75.2
10.45
94
201.2
0.81
25
77.0
10.00
95
203.0
0.79
26
78.8
9.57
96
204.8
0.76
27
80.6
9.16
97
206.6
0.74
28
82.4
8.78
98
208.4
0.72
29
84.2
8.41
99
210.2
0.70
30
86.0
8.06
100
212.0
0.68
31
87.8
7.72
101
213.8
0.66
32
89.6
7.40
102
215.6
0.64
33
91.4
7.10
103
217.4
0.62
34
93.2
6.81
104
219.2
0.60
35
95.0
6.53
105
221.0
0.59
36
96.8
6.27
106
222.8
0.57
37
98.6
6.01
107
224.6
0.55
38
100.4
5.77
108
226.4
0.54
39
102.2
5.54
109
228.2
0.52
40
104.0
5.33
110
230.0
0.51
41
105.8
5.12
111
231.8
0.50
42
107.6
4.92
112
233.6
0.48
43
109.4
4.72
113
235.4
0.47
44
111.2
4.54
114
237.2
0.46
45
113.0
4.37
115
239.0
0.44
46
114.8
4.20
116
240.8
0.43
47
116.6
4.04
117
242.6
0.42
48
118.4
3.89
118
244.4
0.41
49
120.2
3.74
119
246.2
0.40
50
122.0
3.60
120
248.0
0.39
51
123.8
3.47
121
249.8
0.38
52
125.6
3.34
122
251.6
0.37
53
127.4
3.22
123
253.4
0.36
54
129.2
3.10
