Remote Sensor Wire; Transformer Wire; Installation - Lennox ComfortSense 8500 Installation And Setup Manual

Table 3. Twisted Pair Communication Wiring
(SysBus - Yellow)
Catalog
Item
Number
500 foot roll
27M19
1000 foot roll
94L63
2500 foot roll
68M25

Remote Sensor Wire

All remote sensors use standard non-shielded
thermostat wiring; sensors may be wired using two
wires of a multiple wire cable.
NOTE: Outdoor and indoor sensor wire runs
should not exceed 300 feet (100m).

Transformer Wire

Standard thermostat wire (one pair 20 AWG
minimum) may be used to wire the CS8500 to the
optional wall plug 24VAC transformer 18M13 or
other field-provided 2VA minimum, 24VAC output
transformer.
This is a 24VAC low-voltage sensor. Do not install
on voltages higher than 30VAC.
Do not short (jumper) across terminals to test
installation. This will damage the sensor and void
the warranty.
CAUTION

Installation

1. Unpacked the CS8500 and open the case with
a thin-blade screwdriver. Place between wall
base and unit and twist to separate unit from
base.
Figure 1. Removing Back Plate
2. Select a location for the sensor about five (5)
feet (1.5m) above the floor in an area with good
air circulation at average temperature.
3. Do not install the CS8500 where it can be
affected by:
• Drafts or dead spots behind doors and in
corners.
• Entrance or automatic doors.
• Heat generating equipment such as kitchen
equipment.
• Enclose environment unless a remote indoor
sensor is used.
• Hot or cold air from ducts.
• Radiant heat from sun or appliances.
• Concealed pipes and chimneys.
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