Carrier 50TJ016-028 Installation, Start-up And Service Instructions Manual

Also see for 50TJ016: Installation, Start-Up and Service Instructions Installation instructions

Contents

15VENTILATION AIR (Minimum Position Set Up) — If ven-tilation air is not required, skip this section. If ventilation air isrequired, perform the following:1. The indoor fan must be on to set the ventilation air.Either put the thermostat in the continuous fan mode orjumper the R and G terminals at the rooftop unit con-nection board.2. Locate the minimum position (MIN POS) potentiometer.Turn the potentiometer full CCW to fully close the out-door air dampers. Turn the potentiometer graduallyclockwise (CW) to the desired position. See Fig. 16.3. Replace the filter access panel. See Fig. 18. Ensure the fil-ter access panel is securely engaged.4. Calculate the minimum airflow across the EconoMi$er.a. Calculate % of outside air using the followingformula.% Outdoor air through EconoMi$erb. Multiply total CFM by percentage outdoor air, thisgives outdoor air volume in CFM.Step 9 — Install All Accessories — After all thefactory-installed options have been adjusted, install all field-installed accessories. Refer to the accessory installation instruc-tions included with each accessory.MOTORMASTER® I CONTROL INSTALLATION(50TJ016 and 020 Only)Install Field-Fabricated Wind Baffles — Wind baffles mustbe field-fabricated for all units to ensure proper cooling cycleoperation at low ambient temperatures. See Fig. 25 for baffledetails. Use 20-gage, galvanized sheet metal, or similarcorrosion-resistant metal for baffles. Use field-supplied screwsto attach baffles to unit. Screws should be 1/4-in. diameter and5/8-in. long. Drill required screw holes for mounting baffles.% Outdoor air = Mixture Temp – Return Air TempOutdoor Temp – Return Air TempPersonal Injury Hazard. Avoid possible injury by keep-ing fingers away from damper blades.To avoid damage to the refrigerant coils and electrical com-ponents, use recommended screw sizes only. Use carewhen drilling holes.20 mA LED1k ohm Potentiometer2 to 10 VDC at0 to 2000 ppmCO2 Sensors:RemoteMinimum PositionRemoteLEDOutdoor Air EnthalpyCROUTENT001A00Return Air EnthalpyCRRETENT001A00LineVoltageCOCOCOMDATCOMREMPOTCOMLEDCOM22OATCOMOAH+15VRATCOMRAH+15VCOM PWOUT TTVioletCOM PWOUT TT VioletField-supplied W iring W iring Included470 ohm5 wattResistor24 VAC must be presenton BI for the system to beunoccupied.Unoccupied Control(Part number on the controlmust be AD-DME1701-1or AD-DME1711-1.)UnoccupiedContactTanVioletW hiteRedTanVioletW hiteRed24 VAC20 VANOTUSED1 2-(+)3 23ZCSENCOFig. 24 — Typical EconoMi$er Sensor Wiring