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

Also see for 50TJ016-028: Installation, Start-Up and Service Instructions Installation, Start-Up and Service Instructions

Contents

11OPTIONAL INTEGRAL NON-FUSED DISCONNECT —On units with the optional non-fused disconnect, incomingpower will be wired into the disconnect switch. Refer toFig. 13 for wiring for 100 and 200 amp disconnect switches.Units with an MOCP under 100 will use the 100 amp discon-nect switch. Units with an MOCP over 100 will use the200 amp disconnect switch. Refer to the applicable disconnectwiring diagram.To prevent breakage during shipping, the disconnect handleand shaft are shipped and packaged inside the unit control box.Install the disconnect handle before unit operation. To installthe handle and shaft, perform the following procedure:1. Open the control box door and remove the handle andshaft from shipping location.2. Loosen the Allen bolt located on the disconnect switch.The bolt is located on the square hole and is used to holdthe shaft in place. The shaft cannot be inserted until theAllen bolt is moved.3. Insert the disconnect shaft into the square hole on the dis-connect switch. The end of the shaft is specially cut andthe shaft can only be inserted in the correct orientation.4. Tighten the Allen bolt to lock the shaft into position.5. Close the control box door.6. Attach the handle to the external access door with the twoscrews provided. When the handle is in the ON position,the handle will be vertical. When the handle is in the OFFposition, the handle will be horizontal.7. Turn the handle to the OFF position and close the door.The handle should fit over the end of the shaft when thedoor is closed.8. The handle must be in the OFF position to open the con-trol box door.OPTIONAL CONVENIENCE OUTLET — On units withoptional convenience outlet, a 115-v GFI (ground fault inter-rupt) convenience outlet receptacle is provided for field wiring.Field wiring should be run through the 7/8-in. knockout pro-vided in the basepan near the return air opening.Step 7 — Make Outdoor-Air Inlet AdjustmentsMANUAL OUTDOOR-AIR DAMPER — All units (exceptthose equipped with a factory-installed economizer) have amanual outdoor-air damper to provide ventilation air. Dampercan be preset to admit up to 25% outdoor air into return-aircompartment. To adjust, loosen securing screws and movedamper to desired setting. Then retighten screws to securedamper (Fig. 14).OPTIONAL ECONOMI$EREconoMi$er Motor Control Module (Fig. 15-17) — Set theECON SP dial to the ‘‘D’’ setting (Fig. 16). The control mod-ule is located on the EconoMi$er motor. See Fig. 15 and 17.Damper Vent Position Setting1. Set fan switch at ON position (continuous fan operation)and close night switch if used.2. Set system selector switch to OFF position.3. Turn Min Pos (%) dial slowly until dampers assume de-sired vent position. Do not manually operate EconoMi$ermotor since damage to motor will result.5L3 3L2 1L1 LINE6T3 4T2 2T1 LOADNOTE: The disconnect takes the place of TB-1 as shown on the unitwiring diagram label and the component arrangement label.Fig. 13 — Optional Non-Fused Disconnect WiringCONTROLMODULEACTUATORECONOMI$ERFig. 14 — 25% Outdoor-Air Section DetailsFig. 15 — EconoMi$er Damper Assembly— End View