Cabinet Heater G*Y/D*Y Series
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
20
SECTION THREE – Controls Operation, Cont'd.
Board Function and Diagnostics
1. CN1 – 24V Customer Input (Thermostat)
Use proper wire gauge and insulation type based on application and local code requirements.
For detailed IEC 24V thermostat control wiring diagrams, reference thermostat IOMs.
For Factory Installed IEC 24V Thermostat*
* Does not apply to proportional or Line voltage thermostat controls. The diagram below represents a factory installed IEC 24V thermostat.
Connection
Function/Description
(+) 10V
Not used
(-) COM
Ground control power
G3 / HI
Fan High Speed
G2 / MED
Fan Medium Speed
G1 / LOW
Fan Low Speed
W1 / HTG
Heat
Y1 / CLG
Cool
W2 / HT2
Heat stage 2
Y2 / CL2
Cool stage 2
R / 24V
24V Controller Power
COS
Changeover sensor
RAS
Room air sensor
Figure 19. Thermostat wire harness connection
Figure 20. Mounted thermostat connection
*NOTE – Image depicts an IEC unit-mounted Venture Wi-Fi Thermostat.
