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DigiTract 4

Two Stage Heat/Cool

Comfort Control System

Installation Guide

Part #DT4UMAN

Zoning Systems

That’s all we do.

Rev. July 2018

Содержание DigiTract 4

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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