6
1. Door on unit must be secured in place prior to
operation.
2. Lamps to remain illuminated continuously except
during service and maintenance.
3. For optimal odor control, fan should remain on
continuously (i.e. run with thermostat fan setting
in the “ON” position, not the “Auto” position.)
Running fan continuously during cooling opera-
tion may result in higher humidity. If this occurs,
set thermostat in the “Auto” position during cool-
ing operation. Running the fan continuously may
also require more frequent filter changes.
Operation
Risk of Carbon Monoxide poisoning.
Can cause injury or death.
Do not operate without access panel
in place. Operation of this equipment
without the access panel in place may
cause gas fumes from the heating sys-
tem to be drawn into occupied spaces.
WARNING
Electric shock hazard.
Can cause injury or death.
Disconnect all remote electrical
power supplies before servicing.
Access panels must be in place dur-
ing the appliance operation.
WARNING
The PCO-20P has three components that will
require maintenance: MERV 16 pleated filter,
insert, and UVA lamps.(For replacement part num-
bers refer to Replacement Parts section in these
instructions. PCO-20P performance will be dramat-
ically reduced if the required maintenance is not
performed on these three components.)
MERV 16 PLEATED FILTER
The pleated filter should be replaced every 12
months when operated in the automatic fan mode.
More frequent filter changes may be required in situ-
ations with high dust/dirt loads or when operating in
continuous fan mode.
Maintenance
INSERT AND LAMP REPLACEMENT
Replace insert and lamps* every 24 months.
Replace insert more frequently if you notice a sig-
nificant drop in odor removal efficiency.
If you find that you need to replace the insert more
frequently than every 24 months, consider source
reduction and/or ventilation to reduce the levels of
contaminants in your home (see Homeowners IAQ
Guide for additional recommendations).
* Lamps will continue to glow at the end of the 24
months. However, their output efficiency will have
degraded to the point that they must be replaced
to assure effective performance of your PureAir™
system.
1. Turn off power to the unit.
2. Remove the filter access door.
3. Remove metal air seal strip.
4. Slide out the PCO-20P assembly and disconnect
the power cord.
5. Remove the PCO-20P cap.
6. Remove insert.
7. Twist/rotate each lamp approximately 1/4 turn to
remove from sockets.
8. Install new lamps making sure to snap them
completely into the sockets and twist/rotate
1. Turn off power to the unit.
2. Remove filter access door.
3. Remove metal air seal strip.
4. Slide out the PCO-20P assembly and disconnect
the power cord.
5. Remove the PCO-20P cap.
6. Remove the pleated filter and replace with the
same MERV 16 filter. (Performance of PCO-20P
will be dramatically affected if improper filter is
installed.)
7. Reinstall the PCO-20P cap.
8. Slide assembly back into rack and reconnect
power cord.
9. Turn on power to the unit.
10. Verify that the lamps are illuminated.
11. Reinstall metal air seal strip and filter access
door.
MERV 16 FILTER REPLACEMENT(Cont’d)
Maintenance
