Trane Tracer, ZN510 Controller manual VAC Compr, Compr Binary Outputs, Analog Inputs

Unit Operation

24 VAC			Compr 2
HPC	LPC	Compr 1
		Binary Outputs
Figure 7: High and low pressure switch
Note:
The ZN510 controller includes an automatic diag-		1	2	3	4	5	6	7
nostic reset function that allows the controller to
automatically recover after a high or low pres-
sure cutout diagnostic. After 30 minutes the con-
troller will reset the diagnostics. Most
diagnostics occur due to intermittent water tem-
perature or flow problem. The “smart reset” may
eliminate many service calls.

Analog Inputs

The ZN510 controller has five available analog inputs (AI). These inputs are factory-configured for the following functions:

zZone = Space temperature.

zSet = Local setpoint.

zFan = Fan mode input.

zAI 1 = Leaving water tem- perature (Circuit 1).

zAI 2 = Discharge air tem- perature.

See Figure 8 for analog inputs.

TB3-1

TB3-2

Zone Sensor

TB3-3 TB3-4

Analog Inputs

TB3-5

J3-4

J3-3

J3-2

J3-1

AI 2

AI 1

Discharge Air Sensor

Leaving Water Sensor (Circuit)

Zone (1TB1-1)	Ground (1TB1-2)	Setpoint (1TB1-3)	Fan (1TB1-4)
			Figure 8: Analog inputs.

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