Cxm controls, Htv/htd/hth series, Installation, operation & maintenance – Comfort-Aire HTH Series User Manual
Page 30: Heat controller, inc
30
Installation, Operation & Maintenance
HTV/HTD/HTH SERIES
Heat Controller, Inc.
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 specifi ed 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
monitored 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