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PUREAIRt AIR PURIFICATION SYSTEM
PHOTOCATALYTIC OXIDATION (PCO) TECHNOLOGY
Installing Filter and Metal Insert
Use the following procedure to install both filter and metal
insert (see figure 6).
1. Slide the pleated filter into the rails on the air inlet side
of the PCO cabinet. Verify proper air flow direction.
2. Slide the metal insert into rails on the air outlet side of
the PCO cabinet. Slide the control box assembly back
into the cabinet.
3. Securely fasten the access door.
4. Plug one end of the provided power cord into the re-
ceptacle on the PCO cabinet and the other end into a
power receptacle.
5. Look through the view port in the access door to check
that the lamps are illuminated.
NOTE − On initial start−up, the lamps may not reach full
illumination for several minutes.
CAUTION
Ultraviolet (UVA) radiation risk.
Prolonged exposure may cause skin or eye damage.
Avoid prolonged (weeks) exposure to skin or eyes.
NOTICE
MERV 16 filters cannot tolerate direct exposure to
UVA light.
Filters are protected by factory−installed reflectors.
Slide metal insert, MERV 16 filter and control box
assembly into cabinet. Securely fasten access door.
Control Box
Assembly
Metal Insert
MERV 16
Filter
Access
Door
Air
Handler
Figure 6. Installing Filter and Metal Insert
Wiring
The PCO shall be wired in accordance with national and
local codes.
NOTICE
UVA lamp life is shortened when lamps are turned
off and on. Power to PCO unit must remain on at all
times.
Do not interlock lamp operation with air handler
blower operation.
Figure 7. Wiring Schematic
Operation
1. Check to ensure that access door is securely in place.
WARNING
Risk of carbon monoxide poisoning.
Can cause injury or death.
Do not operate system unless access door is in
place and properly secured. Operation of this equip-
ment without the PCO access door in place may
cause exhaust fumes to be drawn into occupied
spaces.
2. Lamps should remain illuminated continuously except
during service and maintenance.
3. For optimal odor control, air handler blower should re-
main on continuously (thermostat fan setting in ON
position, rather than AUTO).
If air handler does not provide a continuous low blower
speed option, an additional blower relay should be
installed. Use Lennox part number 45H03. Phone Lennox
Application Department at 1−800−453−6669 for wiring infor-
mation. Lennox units which include the SureLight
®
inte-
grated control do not require the use of an additional relay.
NOTE − Continuous fan operation may result in higher hu-
midity. If humidity levels are uncomfortably high, fan set-
ting should be switched to AUTO during cooling operation.
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