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
