TABLE 1: UNIT VOLTAGE LIMITATIONS
Power Rating* | Minimum | Maximum |
187 | 252 | |
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432 | 504 | |
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540 | 630 | |
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*. Utilization range “A” in accordance with ARI Standard 110.
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.
TABLE 2: UNIT TEMPERATURE LIMITATIONS
Temperature | Min. | Max. | |
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|
| |
Wet Bulb Temperature (°F) of Air on | 57 | 72 | |
Evaporator Coil | |||
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| ||
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| |
Dry Bulb Temperature (°F) of Air on | 0* | 125 | |
Condenser Coil | |||
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| ||
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|
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*. A low ambient accessory is available for operation down to
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.
Excessive exposure of this furnace to contaminated combustion air may result in equipment damage or personal injury. Typical contaminates include: per- manent wave solution, chlorinated waxes and clean- ers, chlorine based swimming pool chemicals, water softening chemicals, carbon tetrachloride, Halogen type refrigerants, cleaning solvents (e.g. perchloro- ethylene), printing inks, paint removers, varnishes, hydrochloric acid, cements and glues, antistatic fab- ric softeners for clothes dryers, masonry acid wash- ing materials.
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.
Before lifting, make sure the unit weight is distrib- uted equally on the rigging cables so it will lift evenly.
Units may be moved or lifted with a forklift. Slotted openings in the base rails are provided for this purpose.
LENGTH OF FORKS MUST BE A MINIMUM OF 60 INCHES.
All panels must be secured in place when the unit is lifted.
The condenser coils should be protected from rig- ging cable damage with plywood or other suitable material.
FRONT
LEFT | C |
B
A
D
FIGURE 4 - UNIT 4 POINT LOAD
Unitary Products Group | 11 |
