Unit Installation
5.10.3 Thermostat to HVAC Equipment Wiring
The thermostat may not function properly if the total resistance
of any of the ther
mostat to HVAC equipment wires exceeds 2.5
ohms. To ensure that wire length does not cause excess
resistance, refer to Table 6 and ensure that the wires from the
thermostat to the HVAC equipment are not too long.
Table 6 Length by Wire Gauge for Thermostat to HVAC Equipment
Wiring
Copper Wire Gauge Maximum Wire Length
22 AWG (0,33mm
2
)
46m (150 ft.)
20 AWG (0,50mm
2
)
73m (240 ft.)
18 AWG (0,75mm
2
)
117m (385 ft.)
5.10.4 Remote Sensor to Programmable Thermostat
Because remote temperature sensors measure resistance, very
long cable ru
ns can cause slight errors in the measurement. For
the highest temperature reading accuracy, avoid exceeding the
maximum recommended wire lengths show in Table 7.
Table 7 Length by Wire Gauge for Remote Sensor to Programmable
Thermostat Wiring
Copper Wire Gauge Maximum Remote Sensor Wire
Length
22 AWG (0,33mm
2
)
1000 ft. (300m)
20 AWG (0,50mm
2
)
1500 ft. (450m)
18 AWG (0,75mm
2
)
2500 ft. (750m.)
22 |
CL Series Heat Pumps — 8733838716 (2024/05)
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