SmarTemp Control
Electrical Connections
This is a plug and play kit for an AT 2000 ST/STC, EVO AT 3900/5500, or EVO AT 40/55 Heater. Refer to
the compatibility section for adapter part numbers.
Connector Pin out
Pin Number
1
2
3
4
5
6
7
8
For terminal removal use: Molex terminal removal tool P/N: 11-03-0044
Description
+12 / 24V
GND
Heater Output
Diagnostic Blink Code
Analog Output (Temperature Set Point)
Analog Output (Ambient Temperature)
Vent Input
Diagnostic Input W-Bus
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Figure 1 Air Top 2000 ST and STC
Installation - Operating Instructions
TERMINAL INSERT
SIDE OF CONNECTOR
3
Wire Color
Red
Brown
Black
Orange
Blue
Yellow
Purple
Green