Carrier 48HE003---006 Installation Instructions Manual

Contents

23NOTE: These instructions are for installing the optionalEconoMi$er IV and EconoMi$er2 only. Refer to the accessoryEconoMi$er IV or EconoMi$er2 installation instructions whenfield installing an EconoMi$er IV or EconoMi$er2 accessory.1. To remove the existing unit filter access panel, raise thepanel and swing the bottom outward. The panel is nowdisengaged from the track and can be removed. (SeeFig. 31.)2. The box with the economizer hood components is shippedin the compartment behind the economizer. TheEconoMi$er IV controller is mounted on top of theEconoMi$er IV in the position shown in Fig. 26. Theoptional EconoMi$er2 with 4 to 20 mA actuator signalcontrol does not include the EconoMi$er IV controller. Toremove the component box from its shipping position,remove the screw holding the hood box bracket to the topof the economizer. Slide the hood box out of the unit. (SeeFig. 32.)IMPORTANT: If the power exhaust accessory is to be installedon the unit, the hood shipped with the unit will not be used andmust be discarded. Save the aluminum filter for use in the powerexhaust hood assembly.3. The indoor coil access panel will be used as the top of thehood. Remove the screws along the sides and bottom ofthe indoor coil access panel. (See Fig. 33.)4. Swing out indoor coil access panel and insert the hoodsides under the panel (hood top). Use the screws providedto attach the hood sides to the hood top. Use screwsprovided to attach the hood sides to the unit. (See Fig. 34.)5. Remove the shipping tape holding the economizerbarometric relief damper in place.6. Insert the hood divider between the hood sides. (SeeFig. 34 and 35.) Secure hood divider with 2 screws oneach hood side. The hood divider is also used as thebottom filter rack for the aluminum filter.7. Open the filter clips which are located underneath thehood top. Insert the aluminum filter into the bottom filterrack (hood divider). Push the filter into position past theopen filter clips. Close the filter clips to lock the filter intoplace. (See Fig. 35.)8. Caulk the ends of the joint between the unit top panel andthe hood top. (See Fig. 33.)9. Replace the filter access panel.10. Install all EconoMi$er IV accessories. EconoMi$er IVwiring is shown in Fig. 36. EconoMi$er2 wiring is shownin Fig. 37.Barometric flow capacity is shown in Fig. 38. Outdoor airleakage is shown in Fig. 39. Return air pressure drop is shown inFig. 40.FILTER ACCESS PANELOUTDOOR-AIR OPENING ANDINDOOR COIL ACCESS PANELCOMPRESSORACCESS PANELC06023Fig. 31 --- Typical Access Panel LocationsHood Box HOOD BOXBRACKETC06024Fig. 32 --- Hood Box RemovalSIDEPANELINDOORCOILACCESSPANELINDOORCOILACCESSPANELCAULKHERETOPSIDEPANELC06025Fig. 33 --- Indoor Coil Access Panel RelocationBTOPPANELINDOOR COILACCESS PANEL19 1/16”SCREWHOOD DIVIDERLEFTHOODSIDE33 3/8”C06026Fig. 34 --- Outdoor--Air Hood ConstructionECONOMI$ER IV STANDARD SENSORSOutdoor Air Temperature (OAT) SensorThe outdoor air temperature sensor (HH57AC074) is a 10 to 20 mAdevice used to measure the outdoor-air temperature. The outdoor-airtemperature is used to determine when the EconoMi$er IV can beused for free cooling. The sensor is factory-installed on theEconoMi$er IV in the outdoor airstream. (See Fig. 29.) Theoperating range of temperature measurement is 40_ to 100_F.48HE,HJ