Tracer® ZN.520

Binary Outputs

Binary outputs are configured to support the following:

Three fan stages (when one or two fan stages are present, medium fan speed can be configured as exhaust fan)

One hydronic cooling stage

One hydronic heating stage (dehumidification requires this to be in the reheat position)

One DX cooling stage

One- or two-stage electric heat (dehumidification requires this to be in the reheat position)

Face and bypass damper

Modulating outdoor air damper

One baseboard heat stage

Table 27. Binary Output Configuration

Binary Output

Configuration

J1-1

Fan high

J1-2

Fan medium

J1-3

Fan low

J1-4

(Key)

J1-5

Cool valve – open, or 2 position valve,

 

(Note 1)

J1-6

Cool valve – close (Note 1)

J1-9

Heat valve – open, or 2 position valve, or 1st

 

Electric heat stage (Note 1)

J1-10

Heat valve – close or 2nd Electric heat stage

 

(Note 1)

J1-11

Fresh air damper - open

J1-12

Fresh air damper - close

TB4-1

Generic / Bbaseboard heat output

TB4-2

24VAC

Note 1: For Tracer® ZN.520 units configured and applied as 2-pipe hydronic heat/cool changeover, terminals J1-5 and J1-6 are used to control the primary valve for both heating and cooling. For Tracer® ZN.520 units configured and applied as 2-pipe hydronic heat/cool changeover with electric heat, terminals J1-5 and J1-6 are used to control the primary valve (for both cooling and heating), and terminals J1-9 and J1-10 are used only for the electric heat stage. For those 2- pipe changeover units, electric heat will not be energized while the hydronic supply is hot (5 or more degrees above the space tempera- ture).

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Trane LO manual Binary Outputs, Binary Output Configuration

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