Terminals, Wiring Recommendations And Electrical Characteristics - Lennox iHarmony 10C16 Installation And Setup Manual

Terminals, Wiring Recommendations and Electrical Characteristics

Use 18AWG unshielded thermostat cable (field-provided) for power terminals (R and C). Highly recommend using 18 - 22AWG shielded thermostat cable for
communications terminals (I+ and I-) which will help eliminate any noise interference.
Component to Component
Damper Control Module to Indoor Unit
or 17A20 Zone Sensor
Damper Control Module to 50A93
Freezestat
Damper Control Module to 93G35
Freezestat
Damper Control Module to 27W13
High Pressure Switch
Damper Control Module to Discharge
Air Temperature Sensor
Damper Control Module to Dampers
Min Nom Max
Input Voltage 18 24 30
Input Current 2
(All values are @ 25VAC, 60Hz. 25 Degrees Celsius [77°F] unless noted)
Table 4. Terminals and Wiring Recommendations
Terminal Purpose
R 24VAC input
C 24VAC return
I+
RS-BUS I+
I- RS-BUS I-
Freezestat
Freezestat
Pressure
Switch
DATS
Dampers
Table 5. Damper Control Module Electrical Characteristics
Units Comments
VAC System and Damper Power
Amp @ 24VAC and all four dampers closed
IMPORTANT
Recommended Wiring Specifications
18AWG, (unshielded thermostat cable (field-provided)
18 - 22AWG shielded (recommended) (field-
provided)
18AWG, unshielded thermostat cable (field-provided)
18AWG, unshielded thermostat cable (field-provided)
18AWG, unshielded thermostat cable (field-provided).
18AWG, unshielded thermostat cable (field-provided)
4
Maximum Distance between
Components
197 feet (50 meters)
197 feet (50 meters)
197 feet (50 meters)
30 feet (9 meters)
Check with damper manufacturer