SPT Sensors
Carrier Sensors CARRIER CORPORATION ©2021
Installation Guide All rights reserved
16
SPT Sensor specifications
Thermistor. Accuracy ±0.45°F (0.25°C). Less than ±0.18°F (0.1°C) drift over a 10
year period.
50°F to 95°F (10°C to 35°C)
Supplied by the 4-conductor cable (+12 Vdc @ 210 mA) from the controller.
For local access to start up and troubleshoot system
Environmental operating
range
32–122°F (0–50°C), 10–90% relative humidity, non-condensing
Standard 4x2-in. electrical box using provided 6-32 by 1/2 in. mounting screws.
2-3/4 in. (6.9 cm)
4-3/4 in. (12.1 cm)
5/8 in. (1.6 cm)
Rnet Configuration
You wire SPT sensors to a controller's Rnet port. An Rnet can consist of any of the following combinations of
devices wired in a daisy-chain configuration:
• 1 SPT Plus, SPT Pro, or SPT Pro Plus
• 1–4 SPT Standards
• 1–4 SPT Standards, and 1 SPT Plus SPT Pro, or SPT Pro Plus
• Any of the above combinations, plus up to 2 BACview®
6
's but no more than 6 devices total
NOTE You must set addresses only on the following Rnet devices:
• SPT Standard sensors if you have more than one on the Rnet. See To address an SPT Standard sensor (page
17).
• BACview®
6
's if you have two on the Rnet. See the BACview® Installation and User Guide.
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