PureAir PCO14-23 User manual

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AIR CLEANERS / FILTERS Litho U.S.A.
505,276M
7/2014
Supersedes 2/2012
PUREAIR AIR PURIFICATION SYSTEM
PHOTOCATALYTIC OXIDATION (PCO) TECHNOLOGY
INSTALLATION INSTRUCTIONS FOR PUREAIR AIR PURIFICATION SYSTEM
MODELS PCO14-23, PCO16-28 AND PCO20-28
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
Shipping & Packing List
Assembled PureAir air purification system which
includes:
1 - Cabinet
1 - Control box assembly (includes frame, ballasts
and associated wiring)
1 - MERV 16 pleated filter
2 - UVA lamps (taped to the cabinet and the insert foil
packaging)
1 - Titanium dioxide PureAir Insert
1 - Power cord (120VAC)*
*230VAC power cord available separately (part number
91X44).
A warranty certificate and registration card are also
included.
Shipping Damage
Check equipment for shipping damage. If damage is
found, immediately contact last carrier.
General Information
The PureAir air purification system uses photocatalytic
oxidation (PCO) technology to significantly reduce levels
of airborne volatile organic compounds, cooking odors,
common household odors, airborne dust particles, mold
spores and pollen. The PureAir system is available in
three models: PCO14-23, PCO16-28 and PCO20-28.
Each unit may be connected to either 120VAC or 230VAC
power supply. If 230VAC power supply is used, a 230VAC
power cord must be ordered separately.
Lab tests confirm a 50% reduction in total volatile organic
compounds (TVOC) within the first 24 hours of initial
operation of the PureAir air purification system. It may
take up to 48 hours after initial system start-up to reduce
the airborne chemicals that have built up in a home over a
long period of time.
For peak performance, unit should be installed in homes
with TVOC levels that are less than 1000 micro-gram /
cubic meter. Home source removal and ventilation may be
required to lower TVOCs to this level.
NOTICE
This system is NOT intended to be used for removal
of active mold growth or continuous sources of
high levels of chemicals in the air.
For existing mold growth, the mold must be proper
ly removed PRIOR to installation of the PureAir air
purification system.
WARNING
Risk of property damage, injury, or death.
Installation and service must be performed by a
qualified installer or service agency.
WARNING
Electric shock hazard.
Can cause injury or death.
Disconnect all electrical power supplies before ser
vicing. Access panels must be in place during ap
pliance operation.
CAUTION
Sharp edges hazard.
Sharp edges can cause injuries.
Use protective gloves when grasping equipment
edges.
NOTICE
Possible odor emissions. Chemical reactions may
cause temporary odors after initial start-up or after
lamp replacement. Odor may also be present after
paint, cleaning solutions or hobby materials have
been used in the conditioned space.
Some occupants may experience irritation or dis
comfort during this period. If the irritation or dis
comfort lasts longer than 48 hours, the homeowner
should be advised to contact a Lennox dealer.
Unique Field-Supplied Installation Items
Cotton gloves and cloth (to remove finger prints from
lamps)
Aluminum foil tape or water-based mastic (NOT
silicone) to be applied as a sealant.

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Parts Identification
Box Cover
Access Door
MERV 16 Filter
Control Box
Assembly
Reflectors
Ballast
Surge Protector
Lamp
Securing
Clip
Cabinet
Electrical
Socket
Lamp Socket
UVA Lamps
PureAir™ Insert
(Not Installed)
Figure 1. PCO Parts Identification
Installation Examples
The PCO must not be installed in
a confined space where service
clearance would be restricted.
A metal transition should be used. The transi
tion must be planned for each job. Reduction
should not be more than 4 inches per linear
foot, approximately 20 angular degrees.
Note - At sharp
turns, install turn
ing vanes before
the PCO.
Upflow
(Side Installation)
Upflow
(Side installation with PCO access panel pointed upward
and lamps suspended vertically -- NOT RECOMMENDED)
Contact the Technical Support Department at
1.800.953.6669 for additional information.
Downflow Horizontal
Typical Transition
Upflow
Figure 2. Installation Examples

Page 3 PUREAIR AIR PURIFICATION SYSTEM
PHOTOCATALYTIC OXIDATION (PCO) TECHNOLOGY
Dimensions and Specifications
10
(254) A
B
PCO14-23 23 (584) 21-1/8 (537)
Model A B
PCO16-28
PCO20-28 28-1/2 (724) 21-1/8 (537)
28-1/2 (724) 16-1/2 (419)
Figure 3. Dimensions and Specifications
WEIGHT
PCO14-23 34 lbs.
PCO16-28 36 lbs.
PCO20-28 39 lbs.
ELECTRICAL
PCO14-23 120V, 50/60 Hz,
1.2 Amps -- Maximum,
230 V, 50/60 Hz,
0.65 Amps -- Maximum
PCO16-28
PCO20-28
POWER CONSUMPTION
120VAC 144 Watts Nominal
230VAC 150 Watts Nominal
OPERATING ENVIRONMENT
0°F to 140°F outside of duct.
10 to 60 percent relative humidity.
(Optimal performance at 50 percent relative humidity)
PLEATED FILTER EFFICIENCY
Minimum Efficiency Rating Value (MERV) 16.
LISTINGS
ETL safety listing report 3061144A. Conforms to UL STD
1598. Certified to CSA STD C22.2 no. 250.0.
Approximate Air Flow Resistance (Cabinet and Filter)
Capacity
(Tons)
Flow
Rate
(CFM)
Pressure Drop (in. w.g.)
PCO14-23 PCO16-28 PCO20-28
2 800 0.12 0.11 0.09
2.5 1000 0.17 0.15 0.12
3 1200 0.22 0.20 0.16
3.5 1400 0.28 0.25 0.19
4 1600 * 0.30 0.23
4.5 1800 * * 0.28
5 2000 * * 0.32
*Not recommended. Excessive system pressure drop can
damage HVAC system and reduce performance.
Installation
Select a Location
The PCO must be installed in the return air duct upstream
of the supply blower. Allow a 30-inch service clearance in
front of the access door as shown in figure 4. The control
box, pleated filter and PureAir Insert must be removable.
Allow Approximately
30” of Clearance
Figure 4. Service Clearance
NOTICE
The PCO should be installed so that the lamps will
be in the horizontal position.
If the PCO must be installed with the access panel
pointing upward and the lamps suspended vertical
ly from the sockets, retaining clips are required to
lock the lamps in the sockets. Contact the Technical
Support Department at 1-800-953-6669 for addition
al information.

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NOTICE
This appliance is intended for return air duct instal
lation only.
Improper installation may damage PureAir sys
tem, HVAC system, or other equipment and may also
void warranty.
Remove Protective Wrapping
The PureAir Insert is shipped in a protective vacuum
packaging. Packaging must be removed prior to
installation. Take care to prevent damage to PureAir™
Insert when removing packaging.
NOTICE
Unpacking required.
Remove all protective packing material from the
UVA lamps (taped to the cabinet and the insert foil
packaging) and the titanium dioxide PureAir In
sert.
Packing material should be disposed of properly.
Use cotton gloves or a cotton cloth to protect the lamps and
your hands during unpacking and installation. Install lamps
as follows:
1. Locate the two lamp boxes taped to the cabinet and
insert foil packaging.
2. Remove strapping tape form cabinet and insert
packaging to allow the removal of the lamp boxes.
3. Set lamp boxes aside while preparing PCO cabinet for
lamp installation.
4. Remove the PCO access door.
5. Slide out the control box assembly.
6. Remove one replacement lamp from the box. Position
the lamp with the pin end closest to the lamp socket.
While engaging the pins in the socket, pivot the lamp
so that the securing clip on the reflector locks into the
open space in the middle of the lamp. See figure 5.
7. Gently pull on lamp to ensure that lamp securing clip
is engaged.
8. Repeat steps 6 and 7 to install second lamp.
9. Slide vacuum packaged PureAir Insert out of
cabinet. Carefully remove insert from packaging.
10. Keep PureAir Insert and filter in a safe place to
ensure these components remain clean until the
cabinet installation is completed.
Reflector
Lamp Socket Lamp
Lamp
Securing
Clip
Slide lamp pins into lamp socket and pivot
lamp inward onto lamp securing clip.
Pins
Figure 5. Lamp Installation (Top View)
CAUTION
Lamps contain mercury.
Ingestion of or contact with mercury or mercury va
por is hazardous to your health.
Take care when handling lamps. If lamp is broken,
avoid contact with mercury.
Installing PCO Cabinet
The PCO cabinet may either be installed on a level
installation deck or platform adjacent to the air handler or it
may be suspended from the rafters using metal strapping.
If straps are used, take care when attaching straps to the
PCO cabinet. Ensure fasteners do not interfere with
internal components of the PCO cabinet. Filter, PureAir
Insert and control box must be able to slide freely into the
cabinet.
1. Oil on metal surfaces may cause odors. Use mild soap
and water solution to wash all new duct and transition
surfaces.
2. Use the air flow directional label on the inside of the
PCO cabinet to orient the PCO unit. Properly position
the PCO cabinet next to the return air opening of the
air handling unit. Use sheet metal screws (1”
maximum length), rivets or other appropriate
fasteners to secure PCO cabinet to the return air side
of the air handling unit.
3. Use sheet metal screws (1” maximum length) to fasten
the return air duct to the other side of the PCO cabinet.
4. Use aluminum foil tape or water-based mastic to seal
all joints between the PCO cabinet, air handler and
duct.
5. In high humidity applications, wrap PCO cabinet with
2” foil-faced insulation (foil on the outside) to prevent
condensation.
NOTICE
Oil on metal ducts may cause odors.
Use a mild soap and water solution to remove oils
from transitions and duct surfaces prior to installa
tion.

Page 5 PUREAIR AIR PURIFICATION SYSTEM
PHOTOCATALYTIC OXIDATION (PCO) TECHNOLOGY
NOTICE
Do not use any form of silicone sealant.
Use of silicone-based products will reduce the ef
fectiveness of or damage the titanium dioxide coat
ings on the PureAir™ Insert.
NOTICE
Route power cord away from traffic areas where the
cord may become a safety hazard.
Installing Filter and PureAirInsert
Use the following procedure to install both filter and
PureAir 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 PureAir 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
receptacle 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 PureAir™ Insert, MERV 16 filter and control box
assembly into cabinet. Securely fasten access door.
Control Box
Assembly
PureAir™ Insert
MERV 16
Filter
Access
Door
Air
Handler
Figure 6. Installing Filter and PureAir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