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| COOLING AIRFLOW REQUIREMENT (CFM) | |||||||
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| 600 | 800 | 1000 | 1200 | 1400 | 1600 | 2000 | |
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| 040_3BXA | 194* | 194* | 240 | 288 | ||||
| 0453BXA | ||||||||
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InputAirflow | 060_3BXA | 324* | 324* | 324* | 336 | ||||
0703BXA | |||||||||
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080_5CXA | 291* | 291* | 336 | 384 | |||||
| 0704CXA | ||||||||
| 0904CXA | 432* | 432* | 432* | 432* | ||||
| 0905DXA | 388* | 388* | 388* | 480 | ||||
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| 100_5DXA | 486* | 486* | 486* | 486* | ||||
| 1155DXA | ||||||||
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*Minimum filter area dictated by heating airflow requirement.
Permanent Minimum Filter Area (sq. in)
[Based on a 600 ft/min filter face velocity]
FILTER
ACCESS
DOOR
RETURN
DUCT
FILTER
SUPPORT BRACKET (PROVIDED)
FILTER
R FILTE
FILTER
CENTRAL
RETURN
GRILLE
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| COOLING AIRFLOW REQUIREMENT (CFM) | |||||||
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| 600 | 800 | 1000 | 1200 | 1400 | 1600 | 2000 | |
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| 040_3BXA | 388* | 388* | 480 | 576 | ||||
| 0453BXA | ||||||||
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InputAirflow | 060_3BXA | 647* | 647* | 647* | 672 | ||||
0703BXA | |||||||||
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080_5CXA |
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| 583* | 583* | 672 | 768 |
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| 0704CXA |
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| 0904CXA | 863* | 863* | 863* | 863* | ||||
| 0905DXA | 777* | 777* | 777* | 960 | ||||
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| 100_5DXA | 971* | 971* | 971* | 971* | ||||
| 1155DXA | ||||||||
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*Minimum filter area dictated by heating airflow requirement.
Disposable Minimum Filter area (sq. in)
[Based on 300 ft/min filter face velocity]
UPRIGHT INSTALLATIONS
Depending on the installation and/or customer preference, differing filter arrangements can be applied. Filters can be installed in the cen- tral return register or a side panel external filter rack kit (upflows). As an alternative a media air filter or electronic air cleaner can be used as the requested filter.
The following figure shows possible filter locations.
AIR FLOW
CENTRAL
RETURN
GRILLE
FILTER | SIDE RETURN |
EXTERNAL FILTER | |
RACK KIT | |
| (EITHER SIDE) |
| FILTER |
Possible Upright Upflow
AIR FLOW
Possible Upright Counterflow
Filter Locations
NOTE: Internal filter retention is not provided on this furnace.
HORIZONTAL INSTALLATIONS
Filters must be installed in either the central return register or in the return air duct work.
XIV. STARTUP PROCEDURE & ADJUSTMENT
Furnace must have a 115 VAC power supply properly connected and grounded. Proper polarity must be maintained for correct op- eration. In addition to the following
HEAT ANTICIPATOR SETTING
The heat anticipator in the room thermostat must be correctly ad- justed to obtain the proper number of cycles per hour and to pre- vent “overshooting” of the setting. Set the heat anticipator setting to
0.7amps. Follow the thermostat manufacturer’s instructions on how to adjust the heat anticipator setting.
DRAIN TRAP PRIMING
The drain trap must be primed prior to furnace startup. To prime, fill the drain trap with water. This ensures proper furnace drainage upon startup and prohibits the possibility of flue gases escaping through the drain system. Air conditioning condensate may be drained into the furnace trap.
FURNACE OPERATION
Purge gas lines of air prior to startup. Be sure not to purge lines into an enclosed burner compartment. Follow NFPA 54, National Fuel Gas Code 8.3 for proper purging methods. In Canada, follow approved purging methods in B149.1
Check for leaks using an approved
FURNACE STARTUP
1.Close the manual gas shutoff valve external to the furnace.
2.Turn off the electrical power to the furnace.
3.Set the room thermostat to the lowest possible setting.
4.Remove the burner compartment door.
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