York sunline 2000 Installation Manual

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York sunline 2000 Installation Manual Manual pdf 11 page image

362242-YIM-B-0109Johnson Controls Unitary Products 11ECONOMIZER/MOTORIZED DAMPER AND RAIN HOODThe instruction for the optional economizer/motorizeddamper and rain hood can be found in form 035-07364-000. Use these instructions when field assem-bling an economizer rain hood onto a unit. The outdoorand return air dampers, the damper actuator, thedamper linkage, the outdoor and return air divider baf-fles, and all the control sensors are factory mounted aspart of the “Factory installed” economizer/motorizeddamper options.POWER EXHAUST/BAROMETRIC RELIEF DAMPER ANDRAIN HOODThe instructions for the power exhaust/barometric reliefdamper and rain hood can be found in form 530.18-N1.10V.All of the components, including the dampers, hard-ware, and mounting instructions are shipped in a singlepackage external from the unit and must be fieldassembled and installed.Power exhaust is only available as a field installedaccessory.ECONOMIZER AND POWER EXHAUST DAMPERSET POINT ADJUSTMENTS AND INFORMATIONRemove the economizer access panel from the unit.Loosen but do not remove the two panel latches.Locate the economizer control module, where the fol-lowing adjustments will be made.Check that the damper blades move smoothly withoutbinding; carefully turn the Minimum Position Adjustingscrew (found on the damper control module) fullyclockwise and then set the thermostat indoor fan switchto the on position and then off, or energize and de-energize terminals “R” to “G”.MINIMUM POSITION ADJUSTMENTWith thermostat set to indoor fan on position, or termi-nals “R” to “G” energized, turn the Minimum PositionAdjusting screw (located on the damper control mod-ule) counterclockwise until the desired minimumdamper position has been attained.ENTHALPY SET POINT ADJUSTMENTThe enthalpy setpoint may now be set by selecting thedesired setpoint shown in the Enthalpy Setpoint Adjust-ment Figure 4. Adjust as follows:• For a single enthalpy operation carefully turn thesetpoint adjusting screw (found on the dampercontrol module) to the “A”, “B”, “C” or “D” settingcorresponding to the lettered curve of the EnthalpySetpoint Adjustment Figure 4.• For a dual enthalpy operation, carefully turn thesetpoint adjusting screw fully clockwise past the“D” setting.060(5)208/230-1-60 1500 1500 1500 1500 1500 1500208/230-3-60 1500 1500 1500 1500 1500 1500460-3-60 - 1500 1500 1500 1500 1500600-3-60 - - 1500 1500 1500 1500072(6)208/230-1-60 1500 1500 1500 1500 1500 1500208/230-3-60 1500 1500 1500 1500 1500 1500460-3-60 - 1500 1500 1500 1500 1500600-3-60 - - 1500 1500 1500 1500TABLE 3: ELECTRIC HEATER CFM LIMITATIONSUNIT MODEL SIZENOMINAL TONS VOLTAGEMINIMUM SUPPLY AIR CFMHEATER SIZE NOMINAL KW5 7 10 15 20 30Extreme care must be exercised in turning allsetpoint, maximum, and minimum damperpositioning adjustment screws to prevent twist-ing them off.