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Economizer Controller

ACC-SVN203C-EN

13 

Use of the Keypad When Working with 
Menus

•

Navigate to the desired menu.

•

Press the 

 button (Enter) to display the first item in 

the currently displayed menu.

•

Use  the 

 and 

 buttons to scroll to the desired 

parameter.

•

Press the 

 button (Enter) to display the value of the 

currently displayed item.

•

Press the 

 button to increase (change) the displayed 

parameter value.

•

Press the 

 button to decrease (change) the 

displayed parameter value.

Note:

When values are displayed, pressing and holding 

the 

 or 

 buttons causes the display to 

automatically increment.

•

Press the 

 button to accept the displayed value and 

store it in non-volatile RAM.

•

‘CHANGE STORED’ displays.

•

Press the 

 button (Menu Up) to return to the menu 

list.

Time-out and Screensaver

When no buttons have been pressed for 10 minutes, the 
LCD displays a screensaver, which cycles through the 
Status items. Each Status item displays in turn and cycles 
to the next item after 5 seconds.

Controller Menu Structure

Important:

Table 4, p. 14

 illustrates the complete 

hierarchy. Your menu parameters will be 
different depending on your configuration. 
For example if you do not have a DCV (CO

2

) 

sensor, then none of the DCV parameters 
appear and only MIN POS will display. If you 
have a CO

2

 sensor, the DCV MIN and DCV 

MAX will appear AND if you have 2 speed 
fan DCV MIN (high and low speed) and DCV 
MAX (high and low speed) will appear.

The menus in display order are:
•

STATUS

•

SETPOINTS

•

SYSTEM SETUP

•

ADVANCED SETUP

•

CHECKOUT

•

ALARMS

Содержание BAYECON353 Series

Страница 1: ...knowledge and training Improperly installed adjusted or altered equipment by an unqualified person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment 0 to 100 Low Leak Economizer Downflow Foundation Packaged Cooling and Gas Electric 3 to 5 Tons Installation Instructio...

Страница 2: ...uipment that is used in these service procedures In addition some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants Know the applicable laws and follow them WARNING Proper Field Wiring and Grounding Required Failure to follow code could result in death or serious injury All field wiring MUST be performed by qualified p...

Страница 3: ... Trane personnel should always follow local regulations Introduction ACC SVN203C EN 3 Copyright This document and the information in it are the property of Trane and may not be used or reproduced in whole or in part without written permission Trane reserves the right to revise this publication at any time and to make changes to its content without obligation to notify any person of such revision o...

Страница 4: ...on Field Set Up 11 Economizer Controller 12 Controller User Interface and Keypad 12 Sequence of Operation 18 Initiation of Operating Modes 19 Economizer Setup and Configuration Field and Factory Installed Option 19 Enthalpy Settings 20 Powered Exhaust 21 CO2 Sensor 21 Occupancy Sensor 21 Checkout 21 Troubleshooting 22 Fault Detection Diagnostics FDD Certifica tion 22 ...

Страница 5: ...an immediate joint inspection of the damage by the carrier and the consignee Note Do not attempt to repair any damaged parts until the parts are inspected by the carrier s representative Parts List Table 1 lists components shown in Figure 1 and Figure 2 p 6 Table 1 Major economizer component list Component Description 1 Low leak economizer assembly 2 End panel 3 Filter access door 4 Panel Fresh ai...

Страница 6: ...h screws 15 13 12 10 14 16 11 2 6 1 7 Figure 2 Major economizer components factory installed options a 1 10 4 5 9 7 6 8 Bag with items 11 12 13 14 15 and 16 General Information 6 ACC SVN203C EN a Mixed air temperature sensor and bracket are already installed in unit for factory installed option ...

Страница 7: ...nor to moderate injury and equipment damage Field Installed Option WARNING Hazardous Voltage w Capacitors Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power can...

Страница 8: ...See Figure 7 Figure 7 Mating connector plug removal 6 Remove unit top cover and control box access panel Route relay harness as shown in Figure 8 a Locate economizer fault relay EFR wire harness wires 163A and 164A looped near economizer section b Secure unterminated end of the harness with a wire tie in the control panel to the left side of the power terminal block near the Customer Connection LT...

Страница 9: ...ff removal 8 Install gasket on mist eliminator bracket Assembly mist eliminator bracket onto end panel using five screws See Figure 10 Figure 10 Gasket installation 9 Install the fresh air hood build in Step 3 on unit using nine screws and filter access door assembly using 13 screws See Figure 11 Figure 11 Fresh air hood installation Access Panel Control Box Access Panel Top Cover EFR Economizer F...

Страница 10: ...ch mixed air sensor to bracket using the two screws 3 Remove mixed air sensor wire harness from the bag item 14 Connect harness to the economizer controller MAT pin 4 Route the mixed air sensor wire harness through the bushing located at the top of the evaporator coil and connect to the sensor Figure 13 Mixed air temperature sensor installation Seal along with fresh air hood Flanges Seal along wit...

Страница 11: ...ge the gear train and motor beyond repair Never turn the motor shaft by hand or with a wrench Each economizer ships inside the unit and requires partial assembly and setup in the field 1 Remove economizer end panel and filter access door See Figure 14 Figure 14 Access panel removal 2 Remove items 4 5 6 7 8 9 10 12 and 13 from the economizer section as shown in Figure 15 Figure 15 Economizer parts ...

Страница 12: ...Type Description Top Left Terminal Block MAT MAT 20k NTC and COM Mixed Air Temperature Sensor polarity insensitive connection OAT OAT 20k NTC and COM Outdoor Air Temperature Sensor polarity insensitive connection S BUS S BUS SYLK Bus Sylk Bus Sensor polarity insensitive connection Bottom Left Terminal Block IAQ 2 10 2 10 Vdc Air Quality Sensor Input e g CO2 sensor IAQ COM COM Air Quality Sensor Co...

Страница 13: ...non volatile RAM CHANGE STORED displays Press the button Menu Up to return to the menu list Time out and Screensaver When no buttons have been pressed for 10 minutes the LCD displays a screensaver which cycles through the Status items Each Status item displays in turn and cycles to the next item after 5 seconds Controller Menu Structure Important Table 4 p 14 illustrates the complete hierarchy You...

Страница 14: ...temperature Displays F if sensor sends invalid value if not connected short or out of range OA HUM c _ _ 0 to 100 N A Displays measured value of outdoor humidity from OA Sylk Bus sensor Displays if not connected short or out of range RA TEMP c _ _ _ ºF 0 to 140 F N A Displays measured value of return air temperature from RA Sylk Bus sensor Displays F if sensor sends invalid value if not connected ...

Страница 15: ...maintain a space ppm level below the setpoint MIN POS c 2 8 V 2 to 10 Vdc 2 8V 3 2V LO 2 8V HI Displays ONLY if a CO2 sensor is NOT connected With 2 speed fan units MIN POS L low speed fan and MIN POS H high speed fan settings are required Default for MIN POS L is 3 2V and MIN POS H is 2 8V VENTMAX c 2 8 V 2 to 10 Vdc or 100 to 9990 cfm increment by 10 2 8V 3 2V LO 2 8V HI Displays only if a CO2 s...

Страница 16: ...ut used for System Alarm output OCC c INPUT INPUT or ALWAYS ALWAYS When using a setback thermostat with occupancy out 24 Vac the 24 Vac is input INPUT to the OCC terminal If no occupancy output from the thermostat then change program to ALWAYS OR add a jumper from terminal R to OCC terminal FACTORY DEFAULT c NO NO or YES NO Resets all set points to factory defaults when set to YES LCD will briefly...

Страница 17: ... CAL is not available 2SP FAN DELAY c 5 Minutes 0 to 20 minutes in 1 minute increments 5 Minutes When in economizing mode this is the delay for the high speed fan to try to satisfy the call for second stage cooling before the first stage mechanical cooling is enabled CHECKOUT DAMPER VMIN HS N A N A N A Positions damper to VMIN position DAMPER VMAX HS LS c N A N A N A Positions damper to VMAX posit...

Страница 18: ...ull Open Closed to Full Open On High 24 v On VENTMIN to Full Open Closed to Full Open ALARMS _ e MAT SENS ERR N A N A N A CO2 SENS ERR c N A N A N A OAT SENS ERR c N A N A N A DA ENTHL ERR N A N A N A DA ENTHL ERR is not available SYS ALARM N A N A N A When AUX1 O is set to SYS and there is any alarm the AUX1 O terminal has 24 Vac out ACT UNDER V c N A N A N A Voltage received by Actuator is above...

Страница 19: ...BLB SET setting or by the thermostat initiating a call to cool when the damper is at 100 open The Economizer mode is controlled by the MAT getting above the MAT SET setting while the OAT is below the DRYBLB SET setting While the fans are not controlled by the controller the Fan mode is dependent on what state the system is in OCC or Y1 states will cause the damper to go to a LOW fan speed damper s...

Страница 20: ...sing the enthalpy Sylk Bus sensors there will be a slight delay while the controller and the sensor communicate Analog sensors do not communicate on the Sylk Bus and output a 20k ohm signal to the controller with an instantaneous response time Table 9 Single enthalpy and dual enthalpy boundaries parameters ES1 through ES5 Enth Curve Temp dry Bulb ºF Temp dew point ºF Enth btu lb da Point P1 Point ...

Страница 21: ...tions The controller will then operate in the occupied mode every time the indoor fan is running Checkout WARNING Hazardous Voltage Failure to disconnect power before servicing could result in death or serious injury Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Inspect all ...

Страница 22: ...advertently energized NOTICE Compressor Damage Be sure to allow enough time for compressor start up and shutdown between checkout tests so that you do not short cycle the compressors The economizer controller provides alarm messages that display on the 2 line LCD If one or more alarms are present and there has been no keypad activity for at least 5 minutes the Alarms menu displays and cycles throu...

Страница 23: ...Figure 18 Ultra low leak economizer wiring diagram Economizer Controller ACC SVN203C EN 23 ...

Страница 24: ...cations without notice We are committed to using environmentally conscious print practices Trane and American Standard create comfortable energy efficient indoor environments for commercial and residential applications For more information please visit trane com or americanstandardair com ACC SVN203C EN 11 Sep 2021 Supersedes ACC SVN203B EN Apr 2020 ...

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