Table 2 Ð Evaporator Fan Motor Data
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| MOTOR | FAN |
| MOTOR |
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| FAN |
|
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| BELT | |
UNIT |
|
| SHEAVE | BUSHING |
| SHEAVE | BUSHING |
| OUTSIDE | ||||
MOTOR | SHAFT | SHAFT | MOTOR | FAN | BELT | TENSION | |||||||
SIZE | PITCH | DIAMETER | PITCH | DIAMETER | BELT | ||||||||
HP | DIA. | SPEED | SHEAVE | SHEAVE | (QUANTITY) | (lb at | |||||||
580G,H | DIAMETER | (in.) | DIAMETER | (in.) | LENGTH | ||||||||
| (in.) | (rpm) |
|
|
| .24 in.) | |||||||
|
|
| (in.) |
|
| (in.) |
|
|
| ||||
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|
|
|
|
|
|
|
|
|
| |||
240 | 5 | 1.12 | 717 | BK55 | 4.8 | 1B5V124 | 12.4 | BX59 | 62 | 5.10 | |||
10 | 1.38 | 924 | 2BK50 | 4.4 | 2B5V86 | 8.6 | (2) BX51 | 54 | 5.21 | ||||
| 15 | 1.62 | 1096 | 2B5V56 | 5.7 | 2B5V90 | 9.1 | (2) 5VX530 | 53 | 6.00 | |||
300 | 7.5 | 1.38 | 773 | BK60H | 5.4 | 1B5V124 | 12.4 | BX59 | 62 | 6.48 | |||
10 | 1.38 | 962 | 1B5V60 | 6.1 | 1B5V110 | 11.1 | 5VX590 | 59 | 7.37 | ||||
| 15 | 1.62 | 1106 | 2B5V54 | 5.5 | 2B5V86 | 8.7 | (2) 5VX530 | 53 | 6.12 | |||
324 | 10 | 1.38 | 848 | 2BK50 | 4.4 | 2B5V94 | 9.4 | (2) BX52 | 55 | 5.27 | |||
15 | 1.62 | 1059 | 2B5V48 | 4.9 | 2B5V80 | 8.1 | (2) 5VX500 | 50 | 6.63 | ||||
| 20 | 1.62 | 1187 | 2B5V58 | 5.9 | 2B5V86 | 8.7 | (2) 5VX530 | 53 | 7.31 | |||
360 | 10 | 1.38 | 884 | 2BK50 | 4.4 | 2B5V90 | 9.0 | (2) BX51 | 54 | 5.24 | |||
15 | 1.62 | 1096 | 2B5V56 | 5.7 | 2B5V90 | 9.1 | (2) 5VX530 | 53 | 6.00 | ||||
| 20 | 1.62 | 1187 | 2B5V58 | 5.9 | 2B5V86 | 8.7 | (2) 5VX530 | 53 | 7.31 |
NOTE: Motor shaft speed is 1750 rpm. The fan shaft diameter is 111¤16 inches.
A. Positioning
Provide clearance around and above unit for air¯ow, safety, and service access (Fig. 2 and 3).
Do not install unit in an indoor location. Do not locate air inlets near exhaust vents or other sources of contaminated air.
For proper unit operation, adequate combustion and ventila- tion air must be provided in accordance with Section 5.3 (Air for Combustion and Ventilation) of the National Fuel Gas Code, ANSI Z223.1 (American National Standards Institute).
Although unit is weatherproof, guard against water from higher level runoff and overhangs.
B. Roof Mount
Check building codes for weight distribution requirements.
III. FIELD FABRICATE DUCTWORK
Secure all ducts to building structure. Use ¯exible duct con- nectors between unit and ducts as required. Insulate and weath- erproof all external ductwork, joints, and roof openings with counter ¯ashing and mastic in accordance with applicable codes.
Ducts passing through an unconditioned space must be insulated and covered with a vapor barrier.
To attach ductwork to roof curb, insert ductwork approx- imately 10 to 11 in. up into the curb. Connect ductwork to
WARNING: For vertical supply and return units, tools or parts could drop into ductwork and cause an injury. Install 90 degree elbow turns in the supply and return ductwork between the unit and the conditioned space. If a 90 degree elbow cannot be installed, then grilles of sufficient strength and density should be installed to prevent objects from falling into the conditioned space.
IV. UNIT DUCT CONNECTIONS
A. 580G Units
Unit is shipped for
B. 580H Units
Remove shipping covers from supply and return air open- ings. Attach
Install accessory barometric relief or power exhaust in the
Fig. 5 Ð Air Distribution Ð Thru-the-Bottom
Fig. 6 Ð Air Distribution Ð Thru-the-Side
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