York DM 078 manual Features

							246645-YTG-C-0708
	Simplicity™ control board	Disconnect location			Filter access		Filter drier
	w/screw connector for T-stat						(solid core)
					(2” throw-away)
	wiring and network connections (optional		disconnect switch)
	Terminal block for
	hi-voltage connection						Condenser section
	Second model
	nameplate						Slide-out motor and
	inside hinged
							blower assembly for
	access panel
							easy adjustment
	Dual stage						and service
							Belt-drive
	cooling for
							blower motor
	maximum
	comfort						Power ventor motor
	Compressor #2
							20-gauge alumi-
	access (high-
	efficiency						nized steel tubular
	compressor						heat exchanger for
	w/crankcase						long life (stainless
	heater)						steel option)
							Two-stage gas
	Base rails w/forklift						heating to maintain
	slots (three sides)					Slide-out drain pan	warm, comfortable
	and lifting holes						temperature
						with steel 3/4” NPT,
							Intelligent control
	Roof curbs in eight- and					female connection
	fourteen-inch heights. Roof						board for safe and
	curbs for transitioning from		Side entry power			Compressor #1 access	efficient operation
	York Sunline™ footprint to	Toolless
						(high-efficiency compressor
			and control wiring
	the ZH Series footprints are
		door latch				w/crankcase heater)
			knockouts
	also available (field-installed
	accessory)
FIGURE 1 - PREDATOR® COMPONENT LOCATION (DM 120 SHOWN)
FEATURES					Service windows have been placed in both condenser
•	Standard Efficiency– All standard efficiency units have				section walls. Rotation of the cover allows easy access
					to the condenser coils for cleaning or inspection.
	a minimum EER of 9.0. Gas/electric units have elec-
					Both the unit control board and ignition control board utilize
	tronic spark ignition and power vented combustion with
	steady state efficiencies of 80%.				flash codes to aid in diagnosis of unit malfunctions. Unique
•	Service Friendly – The Predator® incorporates a num-				alarm codes quickly identify the source of the unit alarm.
					All units use the same standard filter size. This stan-
	ber of enhancements which improve serviceability.
					dardization removes any confusion on which filter sizes
	The motor and blower slide out of the unit as a common
					are needed for replacement.
	assembly. This facilitates greater access to all the indoor				The non-corrosive drain pan slides out of the unit to per-
	airflow components, thus simplifying maintenance and
					mit easy cleaning. The drain pan is accessed by remov-
	adjustment.
					ing the drain pan cover plate on the rear of the unit.
	Service time is reduced through the use of hinged, tool-
					Once the plate is removed, the drain pan slides out
	less panels. Such panels provide access to frequently				through the rear of the unit.
	inspected components and areas, including the control				All Predator® units have a second model nameplate
	box, compressors, filters, indoor motor & blower, and the
	heating section. The panels are screwed in place at the				located inside the control access door. This is to prevent
	factory to prevent access by children or other unauthor-				deterioration of the nameplate through weathering.
	ized persons. It is recommended that the panels be			•	Environmentally Aware – For improved Indoor Air
	secured with screws once service is complete.
					Quality, foil faced insulation is used exclusively through-

out the units.

Johnson Controls Unitary Products 3