Instructions / Assembly

2
901/2907
Blower Accessory
Installation & Operating Instructions
WARNING
Danger of property damage, bodily injury or death.
Turn off electrical power supply at disconnect switch, fuse box or service panel before removing or working on fan.
Blower Accessory 2901 and 2907
This blower accessory is installed on the furnace top and increases circulation of warm air through the heated space. A 115V electrical
outlet adjacent to the furnace is required. For automatic setting, you must select the "HI" or "LOW" fan switch position. When the
furnace heats up, the automatic fan switch will be activated and the fan will operate. The blower accessory will not operate if the fan
switch is set in the "OFF" (center) position. Be sure this accessory is of the type and design required for use with your furnace.
1. Turn off electric power supply at the disconnect switch, fuse box or service panel before installation or service to the blower
accessory.
2. Label all wires prior to disconnection when servicing. Wiring errors can cause improper and dangerous operation. Verify proper
operation after servicing.
3. Install a 115V electrical outlet as shown in Figure A.
4. Remove the two (2) screws securing the blower grille and remove the blower grille as shown in Figure B.
5. Remove the two (2) screws securing the junction box cover. Remove the cover to gain access to the knockout located in the
junction box.
6. Locate the knockout and remove it using a hammer and screwdriver. Use caution when handling sharp metal edges.
7. Place the blower body on furnace top as shown in Figure B.
8. Route 115V wiring into the junction box through the knockout.
9. Make wiring connections inside the junction box as shown in Figures C and D. Follow applicable local and national electrical
codes. All electrical work must conform to your local codes and ordinances or in their absence, with National Electrical Code,
NFPA 70/ANSI. If you are not familiar with wiring codes in general, have a competent electrician do this job.
10. Replace the junction box cover, securing it with the screws previously removed.
11. Replace the blower grille, securing it with the screws previously removed.
12. Set the switch to the desired position. On 2907, if left in “AUTO” position during the summer months, the blower could be
activated by heat. If this is undesirable, set the switch to the “OFF” position.
For use with:
250 Series Models
2509621A, 2509622A
2509821,
2509822
350 Series Models
3509621A, 3509622A
3509821, 3509822
500 Series Models
5009621A, 5009622A
5009821
,
5009822