Zonex DigiTract 4 Installation Manual Download

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Bypass air in CFM. Calculated at 1500 FPM.
Formula used: B = W X H / 144 X 1500, where B = Bypass air in CFM, W = damper width in inches, H= damper height in inches, 144 = 144
sq. inches per sq. ft., 1500 = 1500 FPM.

SLAVING BYPASS DAMPERS

Use only one Pressure Sensor when slaving two or more Bypass Dampers together. Connect the Pressure Sensor to one damper. Connect the

slave dampers in parallel as shown. Up to 4 dampers can be slaved to one Sensor. The slaved dampers will self synchronize each time the

dampers reach full open or full close.

2000

2333

2667

3000

3333

3667

4000

2500

2917

3333

3750

4167

4583

5000

3000

3500

4000

4500

5000

5500

6000

3500

4083

4667

5250

5833

6417

7000

4000

4667

5333

6000

6667

7333

8000

4500

5250

6000

6750

7500

8250

9000

5000

5833

6667

7500

8333

9167 10000

5500

6417

7333

8250

9167 10083 11000

6000

7000

8000

9000 10000 11000 12000

7000

8167

9333 10500 11667 12833 14000

8000

9333 10667 12000 13333 14667 16000

9000 10500 12000 13500 15000 16500 18000

10000 11667 13333 15000 16667 18333 20000

11000 12833 14667 16500 18333 20167 22000

12000 14000 16000 18000 20000 22000 24000

667

833 1000 1167 1333 1500

1667

1833

833 1042 1250 1458 1667 1875

2083

2292

1000 1250 1500 1750 2000 2250

2500

2750

1167 1458 1750 2042 2333 2625

2917

3208

1333 1667 2000 2333 2667 3000

3333

3667

1500 1875 2250 2625 3000 3375

3750

4125

1667 2083 2500 2917 3333 3750

4167

4583

1833 2292 2750 3208 3667 4125

4583

5042

2000 2500 3000 3500 4000 4500

5000

5500

2333 2917 3500 4083 4667 5250

5833

6417

2667 3333 4000 4667 5333 6000

6667

7333

3000 3750 4500 5250 6000 6750

7500

8250

3333 4167 5000 5833 6667 7500

8333

9167

3667 4583 5500 6417 7333 8250

9167 10083

4000 5000 6000 7000 8000 9000 10000 11000

WIDTH IN INCHES

HEIGHT IN INCHES

SLAVE

DAMPER

ACTUATOR

DAMPER

ACTUATOR

TO NEXT SLAVE

BYPASS DAMPER

IF APPLICABLE

* *

RC RO MC

RECTANGULAR BYPASS SELECTION TABLE

To Static Pressure Controller As Shown On The Bypass Wiring Diagram On

BYPASS DAMPERS - ELECTRONIC

Summary of Contents for DigiTract 4

Page 1: ...DigiTract 4 Two Stage Heat Cool Comfort Control System Installation Guide Part DT4UMAN Zoning Systems That s all we do Rev July 2018...

Page 2: ...il Fuel Application 11 CAPACITY CONTROLLERS Gas Electric 11 Heat Pump 11 Capacity Control and Staging 11 ZONE DAMPERS Round 13 14 Rectangular 15 16 Installation Notes 17 BYPASS DAMPERS Barometric 17 1...

Page 3: ...le the HVAC system off if the leaving air gets too hot in heat mode or too cold in cool mode For heat pumps this input is also used to control the auxiliary heat See Capacity Controller section on pag...

Page 4: ...ade TREC W x H up to 5 SP Medium Pressure Dampers Round STMPD size up to 1 75 SP Rectangular STMRTD W x H up to 1 SP Heavy Duty Rectangular STCD W x H up to 1 75 SP BYPASS DAMPERS DAMPER TRANSFORMER 5...

Page 5: ...nsor in the supply air stream as far from the coil heat exchanger as possible before the bypass takeoff Do not locate the LAT downstream of the bypass takeoff Connect W2 and Y2 of the DT4U output to u...

Page 6: ...bypass takeoff Connect W2 from the controller to the units electric heat stage terminal designation Thermostats Heat Pump thermostats 1C 2H Note Some combination thermostats do not have an E terminal...

Page 7: ...ring one to three TR TREC series dampers to a zone Method 2 When wiring more than Three TR TREC series dampers to a zone use a 24v AC SPNO relay Field Supplied Method 3 When using a ST series damper t...

Page 8: ...er energizes the compressor s and indoor blower This is indicated by the corresponding Y and G LEDs illumi nating Dampers for the zones not calling for cool are powered closed and the dampers for the...

Page 9: ...only the zone dampers 1 1 Zone damper 1 When energized power zone damper 1 closed 2 2 Zone damper 2 When energized power zone damper 2 closed 3 3 Zone damper 3 When energized power zone damper 3 clos...

Page 10: ...ops out to the purge cycle the HVAC outputs are terminated and the initial zone damper remains open for a 4 minute delay with the other dampers closing The HVAC system fan control allows the blower to...

Page 11: ...r terminals This transfor mer powers only the zone dampers 1 1 Zone damper 1 When energized power zone damper 1 closed 2 2 Zone damper 2 When energized power zone damper 2 closed 3 3 Zone damper 3 Whe...

Page 12: ...LEDs on are closed B ON OFF ON OFF ON 1 Y1 Cool 1st stage cool blower on Dampers with LEDs on are closed B ON ON ON OFF ON 1 Y2 Cool 2st stage cool blower on Dampers with LEDs on are closed ON OFF OF...

Page 13: ...e at which that heat pump is no longer ef cient When the outside temperature is less than Balance Point setpoint and there is a call for heat Y1 and Y2 air temperature and cycle the unit off when the...

Page 14: ...ir sensor Optional for Fossil Fuel applications Sensor installation 1 Install the OAS outside of the building away from direct sun exposure and above the snow line 2 Run the sensor cable to the Digitr...

Page 15: ...nd and one straight end for easy installation A hat section supports a synchronous 24v AC 60Hz 12VA motor and terminal board The motor is designed for continuous full stall operation Special winding a...

Page 16: ...0 STMPD12 STMPD14 STMPD16 STMPD18 6 8 10 12 14 16 18 Nominal CFM Duct Diameter Duct Velocity FPM Damper P WC 10 12 14 16 6 8 7 9 410 660 1450 1000 110 250 160 320 750 850 1070 925 540 700 600 725 015...

Page 17: ...off when the damper is opening or in the full opened position Since this is a spring open damper in the event of power failure the damper fails to the full open position RECTANGULAR MEDIUM PRESSURE Z...

Page 18: ...200 1500 1800 2100 390 590 800 1000 1250 1500 1750 310 490 650 850 1000 1200 1400 250 390 510 650 6 8 10 12 14 16 18 20 8 10 12 14 16 18 20 22 24 HEIGHT IN INCHES WIDTH IN INCHES 2 1 2 5 H W 2 1 4 Par...

Page 19: ...ough to bypass the excess air This will control static pressure and noise at the diffusers Zonex Systems offers two types of bypass dampers Barome tric and electronic Each is available in round or rec...

Page 20: ...e certain the damper shaft is horizontal c Loosen counter weight with allen wrench d Loosen lever arm from damper shaft and allow to hang straight down e Fully close damper by grabbing damper shaft on...

Page 21: ...ould be 16 Never undersize the bypass damper ROUND BYPASS DAMPER SELECTION The Zonex Systems STBP damper is used for round bypass applications When you know the bypass CFM requirements use the ROUND B...

Page 22: ...0667 12000 13333 14667 16000 36 9000 10500 12000 13500 15000 16500 18000 40 10000 11667 13333 15000 16667 18333 20000 44 11000 12833 14667 16500 18333 20167 22000 48 12000 14000 16000 18000 20000 2200...

Page 23: ...and controller are powered by a dedicated 24vac 40VA transformer 3 Do not install the bypass damper outside 4 Locate the Integrated Pressure Control IPC and air tube on the bypass damper 5 Drill hole...

Page 24: ...ranslates to inches of W C Note 1 To open all dampers it may be necessary to remove Y outputs to unit on the zone control board and to make full cool calls on all thermostats This will modulate damper...

Page 25: ...pplicable b Set to Cool mode c Set fan switch to AUTO mode d Set cool setpoint 4 below room temperature 14 At System Controller a Verify Y1 G and PWR LEDs are on If not cycle System Controller power s...

Page 26: ...ip heat After 8 minutes of continuous heat call if LAT is less than 90 then W2 will energize and auxiliary heat is on 8 Turn off all thermostats except zone 1 9 At zone 1 thermostat a Verify power swi...

Page 27: ...wiring shorted 0V dc on and w LAT installed Heating calls short cycle LAT open 5V dc on and w LAT installed Replace LAT LAT wiring open 5V dc on and w LAT installed Repair LAT wiring LAT SENSOR TEMPE...

Page 28: ...714 898 9963 Fax 714 898 6802 PATENTED PRODUCT Zonex Systems reserves the right to discontinue or change at any time speci cations or designs without notice and without incurring obligations Part DT4...

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