Table 1. Resistance measurements for zone temperature and setpoints
Zone or setpoint temperature
Nominal zone temperature
output resistance
Nominal setpoint and heating
setpoint output resistance
** NA 938
55°F (12.8°C) 17.47 k 792
60°F (15.6°C) 15.3 k 695
65°F (18.3°C) 13.5 k 597
70°F (21.1°C) 11.9 k 500
75°F (23.9°C) 10.5 k 403
80°F (26.7°C 9.3 k 305
85°F (29.4°C) 8.25 k 208
* NA 49
Notes:
1. Sensors are cal
ibrated at 70°F (21.1ºC).
2. Sin
gle setpoint systems: Varies ±28 at 70°F (21.1ºC); varies ±128 at endpoints of scale 55ºF (12.8ºC) and 85ºF
(29.4ºC). Dual setpoint systems: Cooling setpoint varies ±10
at 70ºF (21.1ºC); varies at ±110 at endpoints of
scale. Heating setpoint varies ±20
at 70ºF (21.1ºC); varies at ±120 at endpoints of scale.
34 BAS-SVX10F-EN
Maintenance and Troubleshooting
Table 2. Resistance measurements for fan and system modes
Fan mode System mode Nominal output resistance
Auto or invalid Emergency heat 35,000
Auto or invalid Heat 19,480
Auto or invalid Auto 7680
Auto or invalid Off 2320
Auto or invalid Cool 4870
On Emergency heat 43,450
On Heat 27,930
On Auto 16,130
On Off 10,770
On Cool 13,320
High Invalid (fan co
ntrol only) 16,130
Med Invalid (fan co
ntrol only) 13,320
Low Invalid (fan co
ntrol only) 10,770
Auto Invalid (fan co
ntrol only) 2320
Off Invalid (fan co
ntrol only) 4870
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