Maximum Wire Length - Trane X13511538-01 Installation And Operation Manual

Maximum Wire Length

The thermostat may not function properly if the total resistance of any of the thermostat wires
exceeds 2.5 ohms (refer to
Important:
Table 2. Maximum wire lengths
Copper Wire size
2
18 AWG (0.75 mm )
2
20 AWG (0.50 mm )
2
22 AWG (0.33 mm )
(a) Temperature and humidity readings can be adjusted in the configuration setup for longer wire runs.
BAS-SVX44A-EN
Ensure that the wires from the thermostat to the HVAC equipment do not exceed
lengths shown in
Maximum Recommended Wire
Length From Thermostat to HVAC
Equipment
385 ft (117 m)
240 ft (73 m)
150 ft (46 m)
Table 2).
Table 2. Best practice: use shorter wire lengths.
Remote
Temperature Sensor
to Thermostat
(a)
(Max )
2,500 ft (762 m)
1,500 ft (457 m)
1,000 ft (305 m)
Pre-Installation
Remote Humidity Sensor to
(a)
Thermostat (Max )
385 ft (117 m)
240 ft (73 m)
150 ft (46 m)
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