INSTALLATION
LIMITATIONS
These units must be installed in accordance with applicable national and local or municipal safety codes.
Refer to Table 1 for Unit Application Data and to Table 2 for
Electric Heat Application Data.
If components are to be added to a unit to meet local codes, they are to be installed at the dealer's and/or the customer's expense.
TABLE 1 - UNIT APPLICATION DATA
Voltage Variation (Min. / Max.) | 400 / 415V | 360 / 456V | |
Wet Bulb Temperature of Air on | °C | 14 / 22 | |
Indoor Coil, (Min. / Max.) | °F | 57 / 72 | |
Dry Bulb Temperature of Air on | °C | 7 | / 52 |
Outdoor Coil, (Min./ Max.) | °F | 45 | / 125 |
FIG. 1 - TYPICAL RIGGING
LOCATION
Use the following guidelines to select a suitable location for these units.
1.Unit is designed for outdoor installation only.
2.Outdoor coils must have an unlimited supply of air.
3.For ground level installation, use a level concrete slab with a minimum thickness of 102mm (4"). The length and width should be at least 152mm (6") greater than the unit base rails. Do not tie slab to the building foundation.
4.Roof structure must be able to support the weight of the unit and its options and/or accessories. Unit must be installed on a solid level roof curb or appropriate angle iron frame.
CAUTION: If a unit is to be installed on a roof curb or spe- cial frame other than a YORK roof curb, gasket- ing must be applied to all surfaces that come in contact with the unit underside.
5.Maintain level tolerance to 13mm (1/2") maximum across the entire length or width of the 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. Spreaders, whose length exceeds the largest dimension across the unit, MUST be used across the top of the unit. Refer to Figure 1.
Units may also be moved or lifted with a forklift, from the front or rear only, providing that an accessory skid is used.
LENGTH OF FORKS MUST BE A MINIMUM OF 2286mm (90").
Refer to Table 3 for unit weights and to Figure 2 for approximate center of gravity.
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| OUTDOOR COIL |
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| END OF UNIT |
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2337 |
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(92") |
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| 1524 |
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| 1143 |
| 3181 |
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| (45") |
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FIG. 2 - CENTER OF GRAVITY
CLEARANCES
All units require certain clearances for correct operation and service. Refer to the unit dimensions detail, Figure 7, for the clearances required for combustible construction, servicing, and unit operation.
WARNING:Do not permit overhanging structures or shrubs to obstruct outdoor air discharge outlet.
DUCTWORK
A closed return duct system shall be used. This does not preclude use of economizers or outdoor fresh air intake. The supply and return air duct connections at the unit should be made with flexible joints to minimize noise.
The supply and return air duct systems should be designed for the airflow and static requirements of the job. They should NOT be sized to match the dimensions of the duct connections on the unit.
CAUTION: When fastening ductwork to side duct flanges on unit, insert screws through duct flanges only. DO NOT insert screws through casing.
Outdoor ductwork must be insulated and water- proofed.
Refer to Figure 7 for information concerning side and bottom supply and return air duct openings.
Unitary Products Group | 3 |
