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About this task
The following figure and table describe the Universal Adapter point types.
Figure 1. Universal Adapter terminations

Callout | Name | Description | Type | Termination Type |
---|---|---|---|---|
1 | Binary inputs (BIs) | |||
W1 | Thermostat W1 signal | 24 VAC | Screw terminal | |
W2 | Thermostat W2 signal | 24 VAC | Screw terminal | |
Y1 | Thermostat Y1 signal | 24 VAC | Screw terminal | |
G | Thermostat G signal | 24 VAC | Screw terminal | |
Y2 | Thermostat Y2 signal | 24 VAC | Screw terminal | |
O | Thermostat O signal | 24 VAC | Screw terminal | |
2 | Thermostat 24 VAC power terminals | |||
R | 24 VAC class 2 supply | 24 VAC | Screw terminal | |
C | 24 VAC class 2 common | 24 VAC | Screw terminal | |
3 | USB | For firmware update | USB2.0 | USB |
4 | UA power supply and Modbus communication terminations | |||
B- | Communication data (inverted) | Comm - | Screw terminal | |
C | 24 VAC class 2 common | 24 VAC | Screw terminal | |
R | 24 VAC class 2 supply for powering the UA | 24 VAC | Screw terminal | |
A+ | Communication data (non-inverted) | Comm + | Screw terminal | |
5 | n/a | Current-limiting fuse, maximum 3.2 A, 19.1 mm ATO fuse holder | n/a | n/a |
6 | SA Bus | MAP Gateway connection | RS-485 | RJ-12 |
7 | Analog inputs (AIs) | |||
AI1 | Return air temperature 1 and 2, sensor product code: S1-TE-636GV-2 | Resistive | Screw terminal | |
AI2 |
Procedure
CAUTION
ATTENTION