Trane Tracer ZN521, Инструкция по установке и эксплуатации

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CNT-SVX07D-EN 9
Overview and specifications
Binary input switching devices
Occupancy, condensate overflow, low-coil-temperature, and fan status inputs accept switching
devices that may have normally open or normally closed dry contacts.
Output devices
Output devices connected to the Tracer ZN521 binary outputs cannot exceed 12 VA (0.5 A) current
draw at 24 Vac.
Zone temperature sensors
Table 1 shows the Trane zone temperature sensors that are supported by the Tracer ZN521 zone
controller.
Valve actuators
Valve actuators cannot exceed 12 VA draw at 24 Vac. For two-position valves, use actuators with
on/off action, and with a spring action that returns the valve to normally open or closed (dependent
on the desired default position). For modulating valve control, use tri-state modulating actuators
with or without a spring return, as required by the application.
Damper actuators
Damper actuators cannot exceed 12 VA draw at 24 Vac. For control of outdoor/return air dampers,
use tri-state modulating actuators that incorporate a spring return.
Zone humidity sensor
For measurement of relative humidity (RH), the Tracer ZN521 requires a zone humidity sensor with
a 4–20 mA output, where 4 mA is 0% RH and 20 mA is 100% RH. The controller provides 20 Vdc to
power the zone humidity sensor.
CO
2
sensor
For CO
2
measurement, the Tracer ZN521 requires a CO
2
sensor with a 4–20 mA output, where 4 mA
= 0 ppm and 20 mA = 2000 ppm.
Table 1. Tracer zone temperature sensor options
BAS
order
number Use
Fan Zone
Timed
override
buttons
Comm
jack High Med Low Auto Off
Setpoint
thumb-
wheel
Temperature
sensor On Cancel
4190 1087 Any x
4190 1088 Any x x x x
4190 1090 Any x x x x x
4190 1094 Any x x x
4190 1095
Unit
ventilator
x x x x x x x x
4190 1115 Fan coil x x x x x x x x x x
4190 1116
Unit
ventilator
x x x x x x x x x
4190 1117 Any x x x x x x x