General Data
Table GD-1 — General Data — 27 1/2 - 30 Tons
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| 27 1/2Ton |
| 30Ton |
Cooling Performance1 |
|
|
|
|
Nominal Gross Capacity |
| 329,000 |
| 363,000 |
Natural Gas Heat2 | Low | High | Low | High |
Heating Input (BTUH) | 350,000 | 600,000 | 350,000 | 600,000 |
First Stage | 250,000 | 425,000 | 250,000 | 425,000 |
Heating Output (BTUH) | 283,500 | 486,000 | 283,500 | 486,000 |
First Stage | 202,500 | 344,500 | 202,500 | 344,500 |
Steady State Efficiency (%)3 | 81.00 | 81.00 | 81.00 | 81.00 |
No. Burners | 1 | 2 | 1 | 2 |
No. Stages | 2 | 2 | 2 | 2 |
Gas Connection Pipe Size (in.) | 3/4 | 1 | 3/4 | 1 |
Electric Heat |
|
|
KW Range5 | ||
Capacity Steps: | 2 | 2 |
Compressor |
|
|
Number/Type | 2/Scroll | 2/Scroll |
Size (Nominal) | 10/15 | 15 |
Unit Capacity Steps (%) | 100/40 | 100/50 |
Motor RPM | 3450 | 3450 |
Outdoor Coil | Lanced | Lanced |
Tube Size (in.) OD | 3/8 | 3/8 |
Face Area (sq. ft.) | 51.33 | 51.33 |
Rows/Fins Per Inch | 2/16 | 2/16 |
Indoor Coil | ||
Tube Size (in.) OD | 1/2 | 1/2 |
Face Area (sq. ft.) | 31.67 | 31.67 |
Rows/Fins Per Foot | 2/180 | 2/180 |
Refrigerant Control | TXV | TXV |
No. of Circuits | 1 | 1 |
Drain Connection No./Size (in) | 1/1.25 | 1/1.25 |
Type | PVC | PVC |
Outdoor FanType | Propeller | Propeller |
No. Used/Diameter | 3/28.00 | 3/28.00 |
DriveType/No. Speeds | Direct/1 | Direct/1 |
CFM | 24,800 | 24,800 |
No. Motors/HP/RPM | 3/1.10/1125 | 3/1.10/1125 |
Indoor Fan Type | FC | FC |
No. Used | 1 | 1 |
Diameter/Width (in) | 22.38/22.00 | 22.38/22.00 |
DriveType/No. Speeds | Belt/1 | Belt/1 |
No. Motors/HP | 1/7.50/10.00 | 1/7.50/10.00 |
Motor RPM | 1760 | 1760 |
Motor Frame Size | 213/215T | 213/215T |
Exhaust FanType | Propeller | Propeller |
No. Used/Diameter (in) | 2/26.00 | 2/26.00 |
DriveType/No. Speeds/Motors | Direct/2/2 | Direct/2/2 |
Motor HP/RPM | 1.0/1075 | 1.0/1075 |
Motor Frame Size | 48 | 48 |
Filters | Throwaway | Throwaway |
No./ Recommended Size (in)6 | 16/16 x 20 x 2 | 16/16 x 20 x 2 |
Refrigerant Charge (Lbs of | 46.00 | 46.60 |
Minimum Outside AirTemperature |
|
|
For Mechanical Cooling | 0 F | 0 F |
Notes:
1.Cooling Performance is rated at 95 F ambient, 80 F entering dry bulb, 67 F entering wet bulb. Gross capacity does not include the effect of fan motor heat. Rated and tested in accordance with the Unitary Large Equipment certification program, which is based on ARI Standard
2.Heating Performance limit settings and rating data were established and approved under laboratory test conditions using American National Standards Institute standards. Ratings shown are for elevations up to 4,500 feet.
3.Steady State Efficiency is rated in accordance with DOE test procedures.
4.Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service instructions.
5.Maximum KW @ 208V = 41, @ 240V = 54.
6.Filter dimensions listed are nominal. For actual filter and rack sizes see the Unit Installation, Operation, Maintenance Guide.
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