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13 - TROUBLE SHOOTING
13.5 Optional Sensors
1.
1 K
Ω
Outdoor Air Sensor, if used.
A. Boiler automatically recognizes sensor when used.
B. See Chart 1 for sensor data. Sensor part number BD710487302V
C. Locate outdoor sensor to protect against wind and direct sunlight. Mounting instructions provided with sensor.
D. Maximum wire length is 100 ft (30m) for 22 ga. wire, or 150 ft (45m) for 18 ga. wire.
2.
10 K
Ω
Sensor for Indirect DHW Tank (Heating Only Boiler).
A. See Chart 2 for sensor data.
CHART 1 - OUTDOOR AIR SENSOR DATA
T
R
T
R
[°F]
[Ohm]
[°F]
[Ohm]
-4.0
7,578
53.6
1,690
-2.2
7,193
55.4
1,621
-0.4
6,831
57.2
1,555
1.4
6,489
59.0
1,492
3.2
6,166
60.8
1,433
5.0
5,861
62.6
1,375
6.8
5,574
64.4
1,321
8.6
5,303
66.2
1,268
10.4
5,046
68.0
1,218
12.2
4,804
69.8
1,170
14.0
4,574
71.6
1,125
15.8
4,358
73.4
1,081
17.6
4,152
75.2
1,040
19.4
3,958
77.0
1,000
21.2
3,774
78.8
962
23.0
3,600
80.6
926
24.8
3,435
82.4
892
26.6
3,279
84.2
858
28.4
3,131
86.0
827
30.2
2,990
87.8
796
32.0
2,857
89.6
767
33.8
2,730
91.4
740
35.6
2,610
93.2
713
37.4
2,496
95.0
687
39.2
2,387
96.8
663
41.0
2,284
98.6
640
42.8
2,186
100.4
617
44.6
2,093
102.2
595
46.4
2,004
100.4
617
48.2
1,920
102.2
595
50.0
1,840
104.0
575
51.8
1,763
106.0
556
CHART 2 - INDIRECT TANK SENSOR DATA
T
R
T
R
[°F]
[Ohm]
[°F]
[Ohm]
32.0
32,505
86.0
8,060
33.8
30,898
87.8
7,726
35.6
29,381
89.6
7,407
37.4
27,946
91.4
7,103
39.2
26,590
93.2
6,813
41.0
25,308
95.0
6,537
42.8
24,094
96.8
6,273
44.6
22,946
98.6
6,021
46.4
21,859
100.4
5,781
48.2
20,829
102.2
5,551
50.0
19,854
104.0
5,332
51.8
18,930
105.8
5,123
53.6
18,054
107.6
4,923
55.4
17,223
109.4
4,732
57.2
16,436
111.2
4,549
59.0
15,689
113.0
4,374
60.8
14,980
114.8
4,207
62.6
14,306
116.6
4,047
64.4
13,667
118.4
3,894
66.2
13,060
120.2
3,748
68.0
12,483
122.0
3,608
69.8
11,935
123.8
3,473
71.6
11,414
125.6
3,345
73.4
10,919
127.4
3,222
75.2
10,447
129.2
3,104
77.0
9,999
131.0
2,991
78.8
9,572
132.8
2,882
80.6
9,166
134.6
2,778
82.4
8,779
136.4
2,679
84.2
8,411
138.2
2,583
PN 240011662 Rev. H [04/30/2019]
