York SUNLINE MagnaDRY DR180 Installation Manual

Also see for SUNLINE MagnaDRY DR 180: Submittal data sheet Installation manual

Contents

York SUNLINE MagnaDRY DR180 Installation Manual Manual pdf 26 page image

127915-YIM-A-040526 Unitary Products GroupOPTIONAL POWER EXHAUST/BAROMETRIC RELIEFDAMPER AND RAIN HOODThe instructions for the power exhaust/barometric reliefdamper and rain hood can be found in form 035-19856-000. The exhaust fan, all supporting brackets,angles, and the wiring are factory installed as part ofthe power exhaust option.All of the components, including the dampers, hard-ware, and mounting instructions are shipped in a singlepackage external from the unit. The hood must be fieldassembled and installed.Power exhaust is not available as a field installedoption.OPTIONAL ECONOMIZER AND POWER EXHAUSTDAMPER SETPOINT 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 SETPOINT ADJUSTMENTThe enthalpy setpoint may now be set by selecting thedesired setpoint shown in the Enthalpy Setpoint Adjust-ment Figure 9. 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 9.• For a dual enthalpy operation, carefully turn thesetpoint adjusting screw fully clockwise past the"D" setting.POWER EXHAUST DAMPER SETPOINT (WITH OR WITH-OUT POWER EXHAUST)• With no power exhaust option, adjust the ExhaustAir Adjustment Screw fully clockwise. This willallow 2nd stage cooling to operate.• With power exhaust option, each building pressur-ization requirement will be different. The point atwhich the power exhaust comes on is determinedby the economizer damper position (PercentOpen). The Exhaust Air Adjustment Screw shouldbe set at the Percent Open of the economizerdamper at which the power exhaust is needed. Itcan be set from 0 to 100% damper open.INDOOR AIR QUALITYIndoor Air quality (indoor sensor input): Terminal AQaccepts a +2 to +10 Vdc signal with respect to the(AQ1) terminal. When the signal is below it's setpoint,the actuator is allowed to modulate normally in accor-dance with the enthalpy and mixed air sensor inputs.When the AQ signal exceeds it's setpoint setting andthere is no call for free cooling, the actuator is propor-tionately modulated from the 2 to 10 Vdc signal, with 2Vdc corresponding to full closed and 10 Vdc corre-sponding to full open. When there is no call for freecooling, the damper position is limited by the IAQ Maxdamper position setting. When the signal exceeds it'ssetpoint (Demand Control Ventilation Setpoint) settingand there is a call for free cooling, the actuator modu-lates from the minimum position to the full open posi-tion based on the highest call from either the mixed airsensor input or the AQ voltage input.• Optional CO 2 Space Sensor Kit Part #2AQ04700224• Optional CO 2 Sensor Kit Part # 2AQ04700124Replace the economizer access panel.Extreme care must be excercised in turning allsetpoint, maximum, and minimum damperpositioning adjustment screws to prevent twist-ing them off.