York DM090 installation manual Unit Temperature Limitations, Location, Rigging and Handling

035-17311-003-A-0704

	Simplicity™ Control board
	w/screw connector	Disconnect location
	for T-stat wiring and
		(optional disconnect switch)
Terminal block for	network connection

hi-voltage connection

Second model name- plate inside hinged access panel

Dual stage cooling for max. comfort

Compressor #2 access (high- efficiency com- pressor with crankcase heater

Base rails w/fork- lift slots (3 sides) and lifting holes)

Tool-less door	Side entry power
	and control wiring
latch
	knockouts

Filter access (2” throw-away)	Filter drier (solid
	core)

Condenser section

Belt-drive blower motor

Slideout motor & blower assembly for easy access adjustment & service

Compressor #1 access (high- efficiency compressor w/ crankcase heater))

Slide-out drain pan with steel 3/4” FPT connection

Roof curbs in eight- and fourteen-inch heights. Roof curbs for transitioning from York Sunline™ footprint to the DM Series footprint are also available (field-installed accessory)

FIGURE 4 - PREDATOR® COMPONENT LOCATION

TABLE 1: UNIT VOLTAGE LIMITATIONS

Power Rating	Minimum	Maximum
380	350	418

TABLE 2: UNIT TEMPERATURE LIMITATIONS

Temperature	Min.	Max.
Wet Bulb Temperature (°F) of Air on	57	72
Evaporator Coil
Dry Bulb Temperature (°F) of Air on	0*	125
Condenser Coil

*. A low ambient accessory is available for operation down to -20°F.

LOCATION

Use the following guidelines to select a suitable location for these units:

1.Unit is designed for outdoor installation only.

2.Condenser coils must have an unlimited supply of air. Where a choice of location is possible, position the unit on either north or east side of building.

3.Suitable for mounting on roof curb.

4.For ground level installation, use a level concrete slab with a minimum thickness of 4 inches. The length and width should be at least 6 inches greater than the unit base rails. Do not tie slab to the building foundation.

5.Roof structures must be able to support the weight of the unit and its options/accessories. Unit must be installed on a solid, level roof curb or appropriate angle iron frame.

6.Maintain level tolerance to 1/2” across the entire width and length of unit.

RIGGING AND HANDLING

Exercise care when moving the unit. Do not remove any packaging until the unit is near the place of installation. Rig the unit by attaching chain or cable slings to the lifting holes provided in the base rails. Spreader bars, whose length exceeds the largest dimension across the unit, MUST be used across the top of the unit.

If a unit is to be installed on a roof curb other than a YORK roof curb, gasketing must be applied to all surfaces that come in contact with the unit under- side.

Unitary Products Group 11