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VARIABLE AIR VOLUME
CONTROLLER
Installation Guide

TEC DOC # LIT-TD-2001 09/2001

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Содержание NXA-VAV-01

Страница 1: ...NXA V NXA V NXA V NXA V NXA VA A A A AV 01 V 01 V 01 V 01 V 01 VARIABLE AIR VOLUME CONTROLLER Installation Guide TEC DOC LIT TD 2001 09 2001 ...

Страница 2: ...the right to update specifications when appropriate Information contained in this document is based on specifications believed to be correct at the time of publication Echelon Coactive Windows NT and General Electric are registered trademarks and service marks of companies other than Johnson Controls Inc FSC CPL and NexSys are trademarks of Johnson Controls Inc 2001 Johnson Controls Inc All Rights...

Страница 3: ...ulations These are designed to provide reasonable protection against such interference when operated in a residential area Only peripherals computer input output devices certified to comply with the Class A limits may be connected to this device Operation with noncertified computer peripherals is likely to result in interference with radio and television reception If this equipment does cause inte...

Страница 4: ...autions when handling static sensitive devices A conductive ground strap should be worn to assure that you are at ground potential If a ground strap cannot be used you should ground yourself before touching the device and remain in contact with a grounded metallic object during the entire time while working with the device Containers tools test equipment and fixtures that come into contact with th...

Страница 5: ... 11 Power Connections 11 Thermistor Wiring 12 Digital Outputs 13 Digital Outputs DO 1 and DO 2 Damper Wiring 14 Digital Output DO 3 Fan Wiring 15 Digital Output DO 4 and DO 5 Electric Staged Reheat 16 Digital Output DO 4 and DO 5 Floating Reheat 18 Digital Output DO 4 and DO 5 Pulse Width Modulation 19 Warranty 20 Warranty Limitations 20 Disclaimer of Warranties 20 Purchaser s Responsibility 20 ...

Страница 6: ...low sensor 5 Triac outputs 24 VAC input a FTT 10 free topology transceiver and a STAT Configuration port The VAV 01 can support stand alone operation but is best utilized when used in conjunction with network communications The unit is shown in Figure 1 below Network Connection ESUSA Thermostat Connection Analog Input 24VAC Power Input Digital Outputs VAV 01 Cover Airflow Sensor Inputs Pneumatic R...

Страница 7: ...ienced technician VAV 01 enclosure for conduit applications not provided UL listed Class 2 power transformer not provided supplying a nominal 24 VAC 20 4 to 30 VAC with a minimum rating of 5 VA at 50 60 Hz and 5 VA plus DO load 24 VA total max at 50 60 Hz LOCATION CAUTION AVOID LOCATIONS WHERE EXCESSIVE MOISTURE CORROSIVE FUMES EXPLOSIVE VAPORS OR VIBRATIONS ARE PRESENT AVOID ELECTRICAL NOISE INTE...

Страница 8: ... circuit board mounting holes are spaced 3 5 x5 5 Dimensions shown in Figure 2 below are in inches and mm When mounting the JCI VAV 01 Controller in the snap track railing be careful not to exert too much pressure when inserting the VAV 01 board into the snap track NOTE Follow static electricity precautions when installing servicing or operating the system GND HOT NEUTRAL Service RESET HIGH LOW TH...

Страница 9: ...run of tubing is 5 feet 1 Remove the yellow plastic fitting caps from the barbed fittings of the VAV 01 airflow sensor inputs See Figure 3 below 2 Connect the tube from the low pressure fitting on the controller to the low pressure tap on the airflow sensor See Figure 3 below 3 Connect the tube from the high pressure fitting on the controller to the high pressure tap on the VAV terminal See Figure...

Страница 10: ...Sys 10 Service RESET P2 HI OUT TEST THERM TEMP GND DO5 DO4 D03 D02 D01 NET NET STAT STAT GND HOT NEU 24VAC To HIGH pressure fitting on the airflow sensor To LOW pressure fitting on the airflow sensor P1 LO Figure 3 Airflow Sensor Connections ...

Страница 11: ...s provided that the transformer is properly sized to power all equipment simultaneously CAUTION WHEN POWERING MULTIPLE UL LISTED CLASS 2 DEVICES FROM THE SAME CLASS 2 POWER TRANSFORMER POLARITY MUST BE OBSERVED 24VAC HOT CONNECTED TO 24VAC HOT AND 24VAC GND CONNECTED TO 24VAC GND DO NOT GROUND THE SECONDARY OF THE POWER TRANS FORMER THE TRANSFORMER FRAME MUST BE GROUNDED Specifications may change ...

Страница 12: ...NEUTRAL CHASSIS GROUND Figure 4 Power Connections THERMISTOR WIRING The Thermistor wiring to the VAV 01 is shown in Figure 5 below NOTE Only a 10K Type II CP Curve thermistor may be used Shielded Cable Analog Input Thermistor Tie Shield To Chassis Ground Ground OUT TEST THERM TEMP GND DO5 DO4 D03 D5 S3 ...

Страница 13: ...rement DO2 must be wired to Damper Decrement DO3 must be wired to the fan if one is used DO4 must be wired to heating element 1 for staged reheat incre ment for floating reheat or the pulse width modulator DO5 must be wired to heating element 2 and heating element 3 if it is used for staged reheat or decrement for floating reheat If pulse width modulation is used DO5 is a spare output ...

Страница 14: ...uide VAV 01 Controller NexSys 14 DAMPER INCREMENT DAMPER DECREMENT FAN REHEAT 1 INCREMENT PWM REHEAT 2 DECREMENT THERM TEMP GND DO5 DO4 D03 D02 D01 Figure 6 Digital Outputs DIGITAL OUTPUTS DO 1 AND DO 2 DAMPER WIRING ...

Страница 15: ...M TEMP GND DO5 DO4 D03 D02 D01 24VAC INCREMENT DECREMENT COMMON BELIMO Made in Switzerland NM24 US 1 2 3 blk red wht COM 24 VAC DC 50 60 Hz 2W 53 in lb 6Nm L R LR 92800 LISTED 94D5 TEMP IND REG EQUIP class 2 supply U L R 5 1 6 1 2 5 8 8 12 16 Figure 7 Damper Wiring DIGITAL OUTPUT DO 3 FAN WIRING Wiring for a Fan is shown in Figure 8 below NOTE The rating for this output is 0 5 amps at 24VAC ...

Страница 16: ... Guide VAV 01 Controller NexSys 16 RELAY THERM TEMP GND DO5 DO4 D03 D02 D01 R 24VAC HOT R Figure 8 Fan Wiring DIGITAL OUTPUT DO 4 AND DO 5 ELECTRIC STAGED REHEAT Wiring for Staged Reheat is shown in Figure 9 below ...

Страница 17: ...g element is wired to a digital output If three heating elements are used for three stage reheat the first element is wired to DO 4 and the second and third elements are wired to DO 5 If two heating elements are used for three stage reheat the smaller heating element is wired to DO 4 and the larger heating element is wired to DO 5 NOTE The rating for these outputs is 0 5 amps at 24VAC ...

Страница 18: ...ating Element 1 Heating Element2 DO5 R2 Heating Element 2 Heating Element 2 3 NOTE This applies to two and three stage electric reheat Figure 9 Staged Reheat DIGITAL OUTPUT DO 4 AND DO 5 FLOATING REHEAT Floating Reheat uses the Increment and Decrement commands and is shown in Figure 10 below NOTE The rating for these outputs is 0 5 amps at 24VAC ...

Страница 19: ...DIGITAL OUTPUT DO 4 AND DO 5 PULSE WIDTH MODULATION Pulse Width Modulation uses the DO 4 and is shown in Figure 11 below DO5 is a spare output when Pulse Width Modulation is used NOTE The rating for these outputs is 0 5 amps at 24VAC 24VAC THERM TEMP GND DO5 DO4 D03 D02 D01 TO PULSE WIDTH TRANSDUCER 24VAC COMMON Figure 11 Pulse Width Modulation ...

Страница 20: ...ke it compatible with the equipment of any other manufacturer DISCLAIMER OF WARRANTIES THE WARRANTY STATED ABOVE IS THE ONLY WARRANTY APPLICABLE TO THIS PRODUCT ALL OTHER WARRANTIES INCLUDING THE IMPLIED WARRANTY OF MERCHANT ABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE GIVEN TO YOU BY LAW ARE HEREBY LIMITED IN DURABILITY TO THE DURATION OF THIS WARRANTY UNDER NO CIRCUMSTANCES WILL JOHNSON CONTR...

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