York SUNLINE 2000 D3CE 036 Installation Instruction

Contents

York SUNLINE 2000 D3CE 036 Installation Instruction Manual pdf 5 page image

OPTIONAL ECONOMIZER RAIN HOODThe following procedure should be used when assembling aneconomizer rain hood onto a unit. Refer to Figure 3. Theoutdoor and return air dampers, damper actuator, the linkageand all the controls are factory mounted as part of theeconomizer option.All of the hood components, including the filters, the gasketingand the hardware for assembling are located above the topfilter racks within the filter section. The outdoor air sensor is inthe bag of parts located at the bottom of the return air section.1. With filter section access panel removed, take out hoodcomponents, filters and sensor described above. Removeand discard outdoor air opening cover on back unit (Upperright hand corner).2. Remove the 13mm (1⁄2 in.) knockout (A) in the units rearpanel (located to the right side of the outdoor air opening).Insert the two loose wires from inside the unit, into the13mm (1⁄2 in.) bushing provided. Insert wires and bushinginto knockout. Snap bushing into place.3. Mount the outdoor air sensor to the rear panel, just belowthe knockout described in Step 2. Secure with twoself-drilling screws at dimples (B) provided in the panel.NOTE: Sensor must be positioned so that the sensingports are at the top (louvers pointing downward)and terminal connections to the right.4. Connect the two wires, indicated in Step 2, to the sensoras follows:• Wire #73 to terminal (+)• Wire #74 to terminal (S)5. Assemble the LH and RH side plates to the top cover(2 screws each side) to form the hood. Apply gasketing tothe flange surface on each side plate. Extend gasketing6mm ( 1⁄4 in.) beyond top and bottom of each flange to insureadequate corner sealing. Secure this assembly to the unitback panel (upper right hand corner). First, remove screw(C) on unit top cover. Then slip flange of hood cover in underflange of unit top cover, replace screw (C), engaging hole(E) in hood flange and tighten. Attach the two side plates tothe unit panel by using two self-drilling screws for each sideplate at dimples (D) provided in the panel.6. Position fillpiece at bottom of hood, between the two sideplates but do not secure at this time. (Slotted openingsMUST be downward for drainage). After fillpiece is properlypositioned, note where contact is made with the unit panel.Remove fillpiece and apply gasket material to this area toprovide a seal. Reposition fillpiece and secure with twoscrews.7. Install the two filters into the hood assembly, sliding downalong retainers on side plates, into fillpiece at bottom ofhood.NOTE: Install filters so that “Air Flow” arrows point towardthe unit.8. Install filter cover over the end of the hood with one screw(center of hood), securing filters into position.CAUTION: When proceeding with steps 9 and 10, extremecare must be exercised while turning both the setpoint and minimum position adjusting screws toprevent twisting them off.9. The enthalpy set point for the dampers may now be set byselecting the desired set-point from graph in Figure 6. Fora single enthalpy economizer, carefully turn the set-pointadjusting screw to the “A”, “B”, “C” or “D” settingcorresponding to the lettered curve. For a dual enthalpyeconomizer, carefully turn the set-point adjusting screwfully clockwise past the “D” setting.10. To check that the damper blades move smoothly withoutbinding, carefully turn the minimum position adjustingscrew fully clockwise and then energize and de-energizeterminals “R” to “G”. With terminals “R” to “G” energized,turn the minimum position screw counterclockwise until thedesired minimum position has been attained.11. Replace the filter section access panel.B GASKETCHOODCOVEROUTDOOR AIRSENSORAFILTER SECTIONACCESS PANELDGASKETEDFLANGER. H.SIDEPLATEDE DDGASKETEDFLANGEFILTERCOVERL. H. SIDEPLATEFILTERSFILLPIECEOUTDOOR AIROPENING COVERSIDE DUCTAPPLICATION SHOWNFIG. 3 - ECONOMIZER RAIN HOOD ASSEMBLY (OPTION)530.26-N1YIUnitary Products Group 5