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15.8
SENSOR VALUES
The following temperature sensors have been fitted in the Lochinvar TTW. Sensors S1 and S2 are located on the rear right-hand side of the heat
exchanger with one of each connected to each burner control.
S1
=
Flow temperature sensor (orange wire)
S2
=
Return temperature sensor (green wire)
S3
=
External flow temperature sensor
S6
=
Flue sensor (white wire)
(S3¹)
=
if terminals S3 are not connected, the average value of S1 top and S1 bottom is taken and this value will be displayed.
The sensors used in the Lochinvar TTW are NTC (Negative Temperature Control) type and should have the following values:
SENSOR 1, 2, 3, 6
TEMPERATURE
RESISTANCE
[°C]
[OHM]
0
32555
5
25339
10
19873
15
15699
20
12488
25
10000
30
8059
35
6535
40
5330
45
4372
50
3605
55
2989
60
2490
65
2084
70
1753
75
1481
80
1256
85
1070
90
915
95
786
15.8.1
SENSOR VALUES
50
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