Trane CNT-SVX07C-EN, N512 Typical applications for the Tracer ZN521 zone controller, HeatElectric

Chapter 4

Input/output functions and wiring for typical applications

This chapter provides information about the function of inputs and out- puts and examples of wiring for typical applications. Applications sup- ported by the Tracer ZN521 zone controller are shown in Table 2.

Table 2. Typical applications for the Tracer ZN521 zone controller

Application	speedfanMultiple		Dehumidification	minimumAutodamper adjust	bypassandFacedamper	controlValve	Economizing	(baseboard)Auxiliaryheat	heatElectric
2-pipe hydronic cooling only		x		x		x	x	x	x
2-pipe hydronic heating only		x		x	x	x	x	x
2-pipe changeover		x	x	x	x	x	x	x	x
2-pipe steam only		x		x	x	x	x	x
4-pipe hydronic heating and cooling		x	x	x	x	x	x	x
4-pipe changeover		x	x	x	x	x	x	x
4-pipe steam/chilled water		x		x		x	x	x
Electric heat only (single- and two-stage)							x	x	×
DX/hydronic heating		x		x		x	x	x
DX/steam heating		x		x		x	x	x
DX cooling only							x	x	x

Figures 7 through 17 (pages 23 through 33) show typical wiring diagrams that include all required and all optional components for typical applica- tions.

CNT-SVX07C-EN 13