Everyday Thermostat Control (Etc) - York International ZQ Series Installation Manual

Everyday Thermostat Control (ETC)

The ETC board focuses on providing the quickest field install, start-up, and service possible.
Figure 25: ETC board component location
Table 39: ETC board components
Location
A
B
C
54 INSTALLATION MANUAL ZQ SERIES 3 - 5 ton 60 Hertz R-410A
Label
W1 Thermostat Connection
W2 Thermostat Connection
Y1 Thermostat Connection
G Thermostat Connection
Y2 Thermostat Connection
X Thermostat Connection
R Thermostat Connection
24V Thermostat Connection
C Thermostat Connection
P4 For Internal Use Only
J10
Johnson Controls Ducted Systems
Description
1st Stage Heat Command
2nd Stage Heat Command
1st Stage Cool Command
Indoor Fan Command
2nd Stage Cool Command
Alarm Indication (24VAC Rectified)
24VAC Connection
No Connection
24VAC Common ConnectionLimit
No Connection (For Future Use)
Function and comments