INSTALLATION
LIMITATIONS
These units must be installed in accordance with all national and local safety codes. If no local codes apply, installation must conform with the appropriate national codes. See Table 1 for Unit Application Data. Units are designed to meet National Safety Code Standards. 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.
LOCATION
TABLE 1 - UNIT APPLICATION DATA
MODEL |
| HCE090,120 & 150 | |||
Voltage Variation1 |
| 187 | / 252 | ||
| 432 | / 504 | |||
Min. / Max. |
| 540 | / 630 | ||
|
| 342 | / 456 | ||
Ambient Air on Condenser Coil | 45°F / 115°F2 | ||||
Min. / Max. |
|
| |||
Suction Pressure at Compressor and | 57.5 psig / 90.0 psig | ||||
Corresponding Temp. at Saturation | |||||
32.0°F / 53.5°F | |||||
Min. / Max. |
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1Rated in accordance with ARI Standard 110, utilization range “A”.
2These units can operate at an ambient temperature of 120°F providing the wet bulb temperature of the air entering the evaporator coil does not exceed 67°F.
NOTE: Refer to page 7 for refrigerant piping limitations.
Use the following guidelines to select a suitable loca- tion for these units.
1.The condensing unit is designed for outdoor installation only. The condenser fans are the propeller type and are not suitable for use with duct work.
2.The condensing unit and the evaporator blower should be in- stalled as close together as possible and with a minimum number of bends in the refrigerant piping. Refer to “REFRIG- ERANT PIPING” for additional information.
3.The condensing unit should not be installed where normal operating sounds may be objectionable. On either rooftop or ground level installations, rubber padding can be applied between the base rails and their supports to lessen any transmission of vibration.
ROOF-TOP LOCATIONS
Be careful not to damage the roof. Consult the building contrac- tor or architect if the roof is bonded. Choose a location with ade- quate structural strength to support the unit.
The condensing unit must be mounted on solid level supports. The supports can be channel iron beams or wooden beams treated to reduce deterioration.
A minimum of two (2) beams are required to support each unit. The beams should: (1) Be positioned perpendicular to the roof joists. (2) Extend beyond the dimensions of the unit to distribute the load on the roof. (3) Be capable of adequately supporting the entire unit weight. Refer to Center of Gravity and Point Load Fig- ures and Physical Data Table for load distribution and weights.
These beams can usually be set directly on the roof. Flashing is not required.
NOTE: On bonded roofs, check for special installation require- ments.
GROUND LEVEL LOCATIONS
The units must be installed on a
Footers under the slab that extend below the frost line is rec- ommended. Any strain on the refrigerant lines may cause a re- frigerant leak. The slab should not be tied to the building foundation because noise and vibration will telegraph into your structure.
A unit can also be supported by concrete piers. These piers should (1) extend below the frost line, (2) be located under the unit's four corners, and (3) be sized to carry the entire unit weight. Refer to Figure 1 and Table 2 for the center of gravity and unit weight.
CAUTION: Care should be taken to protect the unit from tam- pering and unauthorized persons from injury. Screws on access panels will prevent casual tam- pering. Additional safety precautions such as fences around the unit or locking devices on the panels may be advisable. Check local authorities for safety regulations.
RIGGING AND HANDLING
Exercise care when moving the unit. Do not remove any pack- aging until the unit is near the place of installation.
Unit |
| Dim. (in.) |
| ||
A | B | C | D | ||
| |||||
7 Ton | 42 | 31 | 19 | 11 | |
10Ton | 70 | 32 | 30 | 15 | |
Ton | 32 | ||||
FIG. 1 - CENTER OF GRAVITY
Rig the unit by attaching nylon straps with hooks to the lifting holes provided in the base rails. Spreaders, whose length ex- ceeds the largest dimension across the unit, MUST be used across the top of the unit if the rigging height above the top of the unit is less than 5 feet. See Figure 2.
WARNING:Do not use straps under the unit or through the fork lift slots for lifting purposes. Sharp metal edges can damage the straps and could result in personal in- jury or equipment damage.
BEFORE LIFTING A UNIT, MAKE SURE THAT ITS WEIGHT IS DISTRIBUTED EQUALLY ON THE STRAPS SO THAT IT WILL LIFT EVENLY.
Units may also be moved or lifted with a
LENGTH OF FORKS MUSTBE AMINIMUM OF 42" for
Remove the nesting brackets from the four corners on top of the unit. All screws that are removed to take these brackets off must be replaced on the unit.
Unitary Products Group | 3 |