5
3. Align the fan limit control box with the gasket to the 4 holes on the back of the furnace with four #10 x ¾” screws for a watertight seal.
4. GROUND FURNACE TO GROUNDING ROD AND LEG OF FURNACE!
5. Mount blower service cover using 23 #10 screws.
6. Pass the wire conduit through the hole on the blower housing. Reinstall the locking nut on weather tight fitting.
7. Mount draft motor to the front of the unit using (3) 3/4” bolts. Pass conduit through tube located on lower right corner. Attach
conduit clip with one #10 x ¾” screw to right inner panel. Insert plug into control center receptacle marked “draft motor.
8. Insert the plug from the fan limit control into the control center receptacle marked “fan limit.”
9. Insert the plug from the blower motor into the control center receptacle marked “blower motor.”
Connect the 10 inch starter collar to the heat supply vent of the furnace. Connect the 12 inch starter collar to the cold air return on the
back of the blower housing base.
NOTE: When installing blower housing to the back of the furnace, we suggest that you support the bottom of the blower housing
approximately 6 ¼ inches from ground level to allow for easier mounting of the blower housing cover.
Hot Air Supply
Blower
Service
Cover
Electrical Control Center
(See Close-Up Diagram)
Fan Limit
Control
Cold Air
Return
Transformer for
Thermostat Wire
Blower
Motor
Draft
Motor
Fan
Limit
STEP 7
Summary of Contents for SF3048
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