Normally, the fresh air filter will need to be removed and cleaned every six months, but check it after the first three months following installation to
determine if more or less frequent cleaning will be necessary . After cleaning the filter inside the ventilator, clean off the screen at the fresh air intake
hood on the outside of the house . The most common cause of reduced ventilation is a clogged air intake hood .
To clean the ventilator filter:
1. Remove the two screws securing the filter door to the housing and swing open the door (FIGURE 14) .
2. Rotate the plastic filter retainer to release the filter and remove it from the ventilator (FIGURE 15) .
3. Use water to rinse the filter and shake the excess moisture off the filter .
4. Replace the filter in the ventilator, turn the filter retainer to secure it in the housing, and close and secure the filter door .
FIGURE 14
INTERNAL SCHEMATICS
FIGURE 16 – MODEL 8140 INTERNAL SCHEMATIC
BLOWER
RUN CAPACITOR
BRN
M
BLU
RED
GRN
CHASSIS
GROUND
L2-WHT
L1-BLK
BLK
GRN
GND
CHASSIS GROUND
FILTER DOOR
REMOVE (2) SCREWS
90-2241
CAPPED RED & WHITE WIRES ARE LOCATED INSIDE THE FILTER DOOR TO POWER
THE CONTROL (R & C TERMINALS) FROM THE POWER PCB ASSEMBLY. USE ONLY
IF THE VENTILATON CONTROLLER WILL NOT BE WIRED TO THE HVAC SYSTEM.