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General system information
CAUTION: MERCURY NOTICE
If the Lyric T5 Wi-Fi thermostat is replacing a thermostat that contains mercury in a
sealed tube, do not place the old thermostat in the trash. Please contact your local waste
management authority for proper recycling or disposal instructions.
CAUTION: EQUIPMENT DAMAGE HAZARD
Compressor protection is bypassed during testing. To prevent equipment damage, avoid
cycling the compressor quickly.
CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before beginning
installation.
Compatibility
• The Lyric T5 Wi-Fi thermostat is compatible with most single-stage and multi-stage
conventional and heat pump heating and cooling systems
• 24 VAC power (via a “C” or common wire) is required
• Does not work with electric baseboard heat (120-240V)
• Does not work with millivolt systems
• Provides remote thermostat control through iOS or Android smartphones and tablets
• Compatible with Apple® HomeKit™ and Amazon Echo®
Wi-Fi Communication
2.4GHz range, 802.11 b/g/n home wireless router
Temperature Ranges
Adjustable Heat Temperature Range Setting: 40-90 °F (4.5-32.0 °C)
Adjustable Cool Temperature Range Setting: 50-99 °F (10.0-37.0 °C)
Temperature Sensor Accuracy
± 1.5 °F at 70 °F (0.85 °C at 21.0 °C)
Electrical Ratings
Terminal
Voltage (50/60Hz)
Running Current
W
Heating
20-30 Vac
0.02-1.0 A
(Powerpile)
750 mV DC
100 mA DC
W2
(Aux) Heating
20-30 Vac
0.02-1.0 A
E
Emergency Heat
20-30 Vac
0.02-0.5 A
Y
Compressor Stage 1
20-30 Vac
0.02-1.0 A
Y2
Compressor Stage 2
20-30 Vac
0.02-1.0 A
G
Fan
20-30 Vac
0.02-0.5 A
O/B
Changeover
20-30 Vac
0.02-0.5 A
L/A
Input
20-30 Vac
0.02-0.5 A
U
Universal
20-30 Vac
0.02-0.5 A
Power Consumption
Typical (Backlight On, Wi-Fi On): 1.0VA
Maximum (Backlight On, Wi-Fi installation): 1.5VA
REQUIRED: 24 VAC POWER ("C" WIRE)