Carrier CRPWREXH068A00 Installation Instructions Manual

4Fig. 4 — Power Exhaust Wiring DiagramPower Exhaust Installation for Vertical ReturnAir ApplicationOn vertical return air duct applications the power exhaust fan as-sembly is attached at the unit return air panel location.1. Remove existing return air panel on unit, located below theeconomizer hood as shown in Fig. 5. Discard the panel andscrews.2. Install support bracket (50HE400966) to holes in the baserail, as shown in Fig. 6, using four No. 10 x 5/8 in. serratedhead screws (AL48AM217).Fig. 5 — Unit Return Air Panel Removal for VerticalReturn Air Applications3. Install three No. 10 x 5/8 in. serrated head screws(AL48AM217) in the three locations shown in Fig. 7. Thescrews should be installed very loose.4. Place power exhaust fan assembly on lower flange of powerexhaust opening as shown in Fig. 8. Make sure that all threescrews line up in the slots in the power exhaust bottomflange.Fig. 6 — Install Support Bracket to Base Rail forVertical Return Air ApplicationsLEGENDOFC – Outdoor Fan ConnectorPEM – Power Exhaust MotorPER – Power Exhaust RelayPLx-y – Plug x–Pin yCAP – CapacitorReturn Air PanelSupport Bracket