Crestron CHV-RSS Remote Slab and Outdoor Temperature Sensor
Underfloor heating needs to know the slab temperature, not the room temperature, and no wall sensor can tell it. The CHV-RSS is a temperature probe potted inside a waterproof stainless steel sleeve 8 mm in diameter and 70 mm long, made to be buried in concrete, run under a floor, or left outside. Its outdoor range runs from -40 to 170 degrees F, with accuracy of 1 degree F across the full range.
Wiring is a single non-polarized twisted pair, so there is nothing to get backwards. A 20 ft pigtail leaves the probe, and CAT5 or similar low-capacitance cable extends it up to 500 ft back to the thermostat. Up to four CHV-RSS sensors can be connected to one CHV-TSTAT, CHV-THSTAT, CHV-TSTATEX, CHV-TSTATEX-FCU, HZ-THSTAT, DIN-THSTAT or DIN-1TSTAT8, which is how a large zone gets averaged rather than judged from one point.
| Indoor Temperature Range | 0 to 110 degrees F (-18 to 43 degrees C) |
|---|---|
| Outdoor Temperature Range | -40 to 170 degrees F (-40 to 77 degrees C) |
| Accuracy | 1 degree F (0.5 degrees C) over full range |
| Connection | 20 ft (6 m) twisted-pair pigtail, non-polarized |
| Maximum Cable Length | 500 ft (152 m) via CAT5 or similar low-capacitance wire |
| Compatible Thermostats | CHV-TSTAT, CHV-THSTAT, CHV-TSTATEX, CHV-TSTATEX-FCU, HZ-THSTAT, DIN-THSTAT, DIN-1TSTAT8; up to four per thermostat |
| Enclosure | Cylindrical stainless steel, waterproof |
| Dimensions | 0.32 in. (8 mm) diameter x 2.75 in. (70 mm) deep |