York CU060 Installation Instruction

Contents

York CU060 Installation Instruction Manual pdf 12 page image

036-33072-001 Rev. A (0601)12 Unitary Products GroupEVAPORATOR BLOWER DISCHARGECONVERSIONAll models can be field converted to the alternate evaporatordischarge orientation. All models ship with vertical fan dis-charge as standard.Procedure for converting the fan discharge from vertical tohorizontal is similar on all models, single fan or dual fan.a. Remove blower drive belt on all models with basemounted motors. Remove the complete fan motorand drive on models with blower mounted motorassemblies.b. Remove the panel attachment screws on the alter-nate location access panel (front evaporator sectionpanel on 20 and 25 ton, front blower module panelon others ). On 5 through 15 ton units, the front roofsupport angle must be removed to allow access tothe front panel. Remove the panel and set aside.c. Remove the panel attachments screws on theblower outlet mounting panel. Do not remove fasten-ers securing blowers to panel! The blowers are toremain attached to the mounting panel at all times.d. Carefully remove the blower panel assembly fromthe evaporator cabinet. Do not allow blower hous-ings to contact the evaporator coil during theremoval. On some models, the housing(s) will haveto be "rotated" to exit through the panel opening.e. Interchange the blower panel assembly with theposition of the alternate access panel. Exercise carein locating the panel. Do not allow blower housingsto contact the evaporator coil. Install the attachmentscrews and tighten securely.f. Install the blank access panel into the remainingevaporator opening. Fasten securely.g. Relocate the evaporator fan drive motor to the alter-nate location on 5 through 15 ton unit.h. Install and adjust drive belts to appropriate tension.Test run blower and observe operation for unusualsounds or vibration.In order to utilize the 'rear vertical' or 'rear horizontal' dis-charge on 5 through 15 ton models, the upper fan modulemust be rotated.a. Disconnect power wiring at motor terminal box.b. Remove corner connecting brackets which securethe blower module to the lower evaporator unit.c. Carefully lift the blower module, and rotate 1800.Reposition the blower module on top of the evapora-tor/compressor unit. Reinstall the corner connectingbrackets.d. Connect new power wire leads, from the evaporatormotor contactor in the electrical box to the motor ter-minal box. Ensure wires are routed clear of anymoving components. Secure the wiring so that itdoes not contact the evaporator coil.ELECTRICAL WIRINGFollow local electrical codes when making electrical connec-tions. Units are completely factory wired for normal supplyvoltages (ie.208-230, 460, 575/3phase/60hz) Confirm unitspecifications by checking unit data plate. All electrical com-ponents are accessible through an independent electricalpanel located on the right hand end of the evaporator/com-pressor section. The electrical control boxes are locatedbehind outer access panels. The compressor section electri-cal cover is provided with wiring diagrams on the inside,which must be opened to be read.Provide individual power disconnects for each unit. Install asecure ground to the bonding lug located in the electrical con-trol panel. If canvas flexible joints are used on ductwork,install a ground wire to the ductwork as well.IMPORTANT: All wiring must comply with applicablelocal and national codes (NEC). Type and location of dis-connect switches must comply with all applicable codes.DISCONNECT AND LOCK OUT POWER WHENSERVICING UNIT. FAILURE TO DO SO MAYRESUL T IN PERSONAL INJURY OR DEATHDUE TO ELECTRICAL SHOCK.DISCONNECT AND LOCK OUT POWER WHENSERVICING UNIT. UNIT MAY START AUTOMATI-CALLY IF POWER IS NOT DISCONNECTED.FAILURE TO DO SO MAY RESULT IN PER-SONAL INJURY OR DEATH DUE TO ELECTRI-CAL SHOCK.WARNINGWARNING