Venstar T2800 Installation - Manual (Page 20)

Page 5.8
5
Installing the Outdoor Sensor
See the Outdoor Sensor accessory for further details.
The Outdoor Sensor measures outdoor air temperature and sends this
information to the thermostat; it measures temperature with a range of
-40 to 127 F.
The Outdoor Sensor should be connected to the thermostat using
solid conductor CAT 5, CAT 5e, or CAT 6 type network commun-
ication cable. This is an unshielded cable with four twisted pairs of
24 gauge solid wire; DO NOT use stranded cable. The cable length
should not exceed 250 feet. If less than 75 feet of cable is required to
connect the thermostat to the Remote Sensor, a three conductor
thermostat cable (18-24 gauge) may be used; this cable is NOT
suitable for any length greater than 75 feet.
IMPORTANT: Do no use shielded wire. Do not run sensor wiring in the
same conduit as the 24VAC thermostat wiring. Electrical interference
may cause the sensor to give incorrect temperature readings.