Trane BASPRC006 010202

Tracer Controls ZN511 and ZN521 Controllers 2002 Tracer ZN511 and ZN521 zone provide digital control for types of heating ventilating and HVAC equipment Tracer ZN511 controls Water source heat pumps Fan coils Cabinet heaters Tracer ZN521 controls Unit ventilators Fan coils Cabinet heaters Blower coils zone controllers operate as stand devices or as part of a Trane Comfort system ICS The communicate with a Tracer building automation system via LonTalk communication link LonTalk the controllers to operate in peer configuration and to with other compatible control systems offers a variety of wall mounted sensors for Tracer controllers Zone come with any of the following Temperature setpoint thumbwheel Fan speed switch ON and CANCEL occupancy buttons A communications jack for the Rover tool The following are trademarks or registered trademarks of their respective com Windows from Microsoft Corporation LonTalk and LonMark from Echelon Cor Integrated Comfort Rover Tracer and Tracer Summit from Trane 2002 American Standard Inc 2 ZN511 zone controller 4 and outputs 4 4 diagram for the zone controller 5 ZN521 zone controller 6 and outputs 6 6 diagram for the zone controller 8 architecture 9 sensor options 10 and specifications 11 ZN511 zone controller Tracer ZN511 zone controller digital control of fan coils and heat pumps The Tracer improves comfort control and stand alone or networked automation and outputs ZN511 inputs and outputs include Analog inputs zone temperature or leaving water temperature air temperature zone tem setpoint fan mode switch Binary inputs occupancy conden overflow low water temperature pressure protection high pres protection Outputs water source heat pump 1 compressor 2 two outside air damper reversing fan on off coil fan high fan medium fan 1 cool 1 heat two position air damper Generic points for use with a Tracer building automation system input shared with occupancy output shared with outside air generic inputs pass information to building automation system They do affect the operation of the unit The binary output is controlled by building automation system and its is not changed by unit operation under a diagnostic shutdown installation controller can be installed in existing and competitive HVAC equipment major wiring changes and labeled screw terminals ensure wires are connected quickly and A compact enclosure design installation in minimal space water temperature sampling traditional system using a two way valve on a fan coil might not the correct entering water during long periods when control valve is closed The Tracer solves this problem by opening valve for three minutes to allow the temperature to stabilize before temperature is taken This feature the use of two way control valves provide accurate two pipe system for 1heat 1 cool applications heat cool mode Tracer ZN511 automatically whether heating or cooling needed to maintain comfort levels the need to manually adjust unit The controller measures the temperature and setpoint then uses a proportional algorithm to maintain zone at the setpoint and unoccupied operation occupancy input works with a occupancy sensor or time A communicated value from a automation system through the communication link can also be The input allows the controllers to unoccupied setback temperature start feature randomly staggers multiple start up to reduce electrical demand and cool down feature is available with the of an outside air damper If room temperature drifts too far from setpoint the controller temporarily the damper to bring the to the desired setpoint as as possible output test the test button on the exercises all binary outputs in This feature is an invaluable tool communication controllers can share data if are bound together Shared data include setpoint zone temperature and fan status Applications more than one unit serving a large space can benefit from this which prevents multiple units simultaneously heating and Tracer ZN511 conforms to the Space Comfort Controller profile and communicates via the protocol This allows it to work other control systems that support and the SCC profile fan or fan cycling can choose to have the fan run at a given speed or cycle and off automatically by selecting the mode protection Tracer ZN511 includes inputs that for the following equipment Refrigerant high and low pressure to prevent the unit from with high low refrigeration levels heat pump only Compressor minimum on and off tim to extend compressor life by pre short cycling heat pump only A condensate overflow switch to pre water damage to the building Low temperature detection to prevent operation during conditions heat pump or freeze up fan coil override timed override function for after operation allows users to request operation by the touch of a button the unit zone sensor Additionally can press the CANCEL button at any to place the unit back into mode status controller monitors the fan output as proof of airflow This method is effective and commonly used on fan applications maintenance maintenance status is based on cumulative hours of operation of the fan The controller has timers that be reset and when the time limit Tracer Summit software or the service tool indicates that unit is recommended diagram for the zone controller 1 shows a general wiring diagram the Tracer ZN511 zone controller 1 Tracer ZN511 wiring diagram Vac inputs outputs POWER POWER INPUTS OUTPUTS SENSOR SENSOR INPUTS INPUTS ZNZN zone sensor LonTalk inputs LonTalk ZN521 zone controller Tracer ZN521 zone controller digital control of fan coils unit and blower coils The Tracer improves comfort control and stand alone or networked automation and outputs ZN521 inputs and outputs Analog inputs zone temperature setpoint fan speed entering temperature discharge air tem outside air temperature relative humidity Binary inputs occupancy low coil detection fan status overflow detection Outputs Fan high fan medium fan exhaust fan on of cooling valve valve face and bypass economizer damper electric two stages Generic points for use with a Tracer building automation system input shared with occupancy output shared with baseboard two analog inputs one shared humidity sensor and often used the optional carbon dioxide and the second shared with air temperature generic inputs pass information