Installation Electrical
RT-SVX34F-EN 35
Space Temperature Averaging
Space temperature averaging is accomplished by wiring a
number of remote sensors in a series/parallel circuit.
The fewest number of sensors required to accomplish
space temperature averaging is four. Example #1
illustrates two series circuits with two sensors in each
circuit wired in parallel. Any number squared, is the
number of remote sensors required. Example #2
illustrates three sensors squared in a series/parallel circuit.
NSB panel remote sensors must use twisted/shielded
cable.
Figure 32. Space temperature averaging
Table 16. Temperature vs. resistance (temperature vs.
resistance coefficient is negative)
Degrees
F°
Nominal
Resistance
Degrees
F°
Nominal
Resistance
-20° 170.1 K - Ohms 50° 19.96 K - Ohms
-15° 143.5 K - Ohms 55° 17.47 K - Ohms
-10° 121.4 K - Ohms 60° 15.33 K - Ohms
-5° 103.0 K - Ohms 65° 13.49 K - Ohms
0° 87.56 K - Ohms 70° 11.89 K - Ohms
5° 74.65 K - Ohms 75° 10.50 K - Ohms
10° 63.80 K - Ohms 80° 9.297 K - Ohms
15° 54.66 K - Ohms 85° 8.247 K - Ohms
20° 46.94 K - Ohms 90° 7.330 K - Ohms
25° 40.40 K - Ohms 95° 6.528 K - Ohms
30° 34.85 K - Ohms 100° 5.824 K - Ohms
35° 30.18 K - Ohms
40° 26.22 K - Ohms
45° 22.85 K - Ohms
To RTRM J6-1 and J6-2
or to ZSM terminals 1
and 2 or NSB panel terminals
S1 and S2. Shield to terminal 11
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