York DM090 installation manual Side Panels with Hole Plugs Condensate Drain

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035-17311-003-A-0704

When fastening ductwork to side duct flanges on unit, insert screws through duct flanges only. DO NOT insert screws through casing. Outdoor duct- work must be insulated and water-proofed.

FIGURE 13 - SIDE PANELS WITH HOLE PLUGS

Note orientation. Panel is “insulation” side up.

CONDENSATE DRAIN

The side condensate drain is reversible and maybe re-ori- ented to the rear of the cabinet to facilitate condensate pip- ing. A condensate drain connection is available through the base pan for piping inside the roof curb. Trap the connection per Figure 16. The trap and drain lines should be protected from freezing.

Plumbing must conform to local codes. Use a sealing com- pound on male pipe threads. Install condensate drain line from the 3/4 inch NPT female connection on the unit to an open drain.

OPTIONALCOIL

GUARD

3"Minimum

FIGURE 16 - CONDENSATE DRAIN

COMPRESSORS

The compressors are mounted on elastomer insulators. The mounting bolts have been fully tightened for shipping.

Do not loosen the compressor mounting bolts.

FIGURE 14 - RETURN DOWNFLOW PLENUM WITH PANEL

FILTERS

Two-inch filters are supplied with each unit. One-inch filters may be used with no modification to the filter racks. Filters must always be installed ahead of evaporator coil and must be kept clean or replaced with same size and type. Dirty fil- ters reduce the capacity of the unit and result in frosted coils or safety shutdown. All units use four (4) 20”x25”x2” filters. The unit should not be operated without filters properly installed.

FIGURE 15 - DISCHARGE PANEL IN PLACE

Make sure that panel latches are properly positioned on the unit to maintain an airtight seal.

16	Unitary Products Group

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Contents Installation Manual Table of Contents List of Figures List of Tables Safety Considerations GeneralInspection Reference½ 12½ Ton Predator Model Number Nomenclature NomenclatureNOMENCLATURE, Additonal Options Johnson UNT Controller, DFS, APS & Phase Monitor Technicoat Condenser Coil, Phase Monitor, & Coil Guard Installation Safety Information InstallationPreceding Installation Location Unit Temperature LimitationsRigging and Handling Point Load Weight Length of Forks Must be a Minimum of 60 InchesDetail B Detail a Detail CBottom Duct Openings from Above Ductwork Duct CoversSide Panels with Hole Plugs Condensate Drain Thermostat Wiring Control Wire SizesPower and Control Wiring Power Wiring DetailElectronic Thermostat Field Wiring RLA Electrical Data DM120 10 TON with Power Convenience Outlet 380 11.5 75.0Physical Data OPTIONS/ACCESSORIESMinimum Supply AIR CFM Economizer and Power Exhaust SET Point Adjustments and InformationEnthalpy SET Point Chart Phasing Blower RotationSupply AIR Limitations Belt Tension1/2 TON Standard Motor Down Shot Blower PERFORMANCE* † 1/2 TON Optional Motor Down Shot Blower PERFORMANCE* †10 TON Standard Motor Down Shot Blower PERFORMANCE* † 10 TON Optional Motor Down Shot Blower PERFORMANCE* †12-1/2 TON Standard Motor Down Shot Blower PERFORMANCE* † 12-1/2 TON Optional Motor Down Shot Blower PERFORMANCE* †1/2 TON Standard Motor Side Shot Blower PERFORMANCE* † 1/2 TON Optional Motor Side Shot Blower PERFORMANCE* †10 TON Standard Motor Down Shot Blower PERFORMANCE* † 12-1/2 TON Standard Motor Side Shot Blower PERFORMANCE* † 12-1/2 TON Optional Motor Side Shot Blower PERFORMANCE* †Indoor Blower Specifications AIR BalanceChecking AIR Quantity Method ONE Method TWODRY Coil Delta P Supply AIR Drive Adjustment Operation Additional Static ResistanceMotor Sheave Datum Diameters Sequence of Operations OverviewCooling Sequence of Operation Safety Controls Compressor ProtectionElectric Heating Operation Errors Electric Heat Limit SettingElectric Heating Sequence of Operations Electric Heat Antictpator SetpointsSTART-UP Cooling Charging the Unit10 TON Standard Efficiency Superheat Charging 12.5 TON Standard Efficiency Superheat ChargingGeneral Normal Maintenance TroubleshootingPredator Flash Codes Basic Troubleshooting Flowchart Unit Control Board Flash CodesCooling Troubleshooting Guide Unitary Products Group 035-17311-003-A-0704 Unitary 5005 Norman Products York Group Drive 73069