Bioclimatic PCO Technical Document

OUR MISSION
To design and build quality engineered air cleaning systems
to provide indoor comfort, protect occupants, and ensure the
reliability of critical systems and processes.
Bioclimatic.com
350-AUG-2021
IMPORTANT
Save this Document
for Future Reference &
Warranty Information
Photo Catalytic
Oxidation Series
Installation, Operation
and Maintenance Guide

Installation, Operation & Maintenance Guide Photo Catalytic Oxidation Series 2
1-800-394-3458 350-AUG-2021 Bioclimatic.com
! I M P O RTA NT!
READ THIS BEFORE STARTING INSTALLATION.
DO NOT THROW AWAY THIS GUIDE.
How to Contact Us: If you need help, please contact a
Bioclimatic Air Systems Representative for technical assistance.
For installation you MUST:
■ Always disconnect power to the unit before handling any of the
components.
■ DO NOT connect to the power before the installation is complete and
personnel are aware of the imminent operation.
■ Carefully read this instruction booklet before beginning the installation.
■ Follow each installation or repair step exactly as shown and explained in
this guide.
■ Observe all local, state, national and international electrical codes.
■ Pay close attention to all warnings and caution notices given in this guide.
!CAUTION!
Do not touch while in operation shut off electricity before servicing!
This equipment should be inspected frequently and collected dirt removed from it regularly to prevent excessive
accumulation that may result in flashover or risk of fire.
!MISE EN GARDE!
Ne touchez pas pendant le fonctionnement couper l’électricité avant l’entretien
Cet équipement doit être inspecté fréquemment et la saleté collectée doit être retirée régulièrement pour éviter
toute accumulation excessive pouvant entraîner un contournement ou un risque d’incendie.

Installation, Operation & Maintenance Guide Photo Catalytic Oxidation Series 3
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Table of Contents
01 INTRODUCTION 4
1.1 Disclaimer 4
1.2 Receiving 4
1.3 Storage 4
1.4 Warranty 5
02 PHOTO CATALYTIC OXIDATION PCO 6
2.1 System Structure 7
2.2 PCO Panel 7
2.2 Performance 7
03 GENERAL INSTALLATION 8
3.1 Considerations 8
3.2 Unit Installation 8
3.3 Clearances for Service Access 8
04 MAINTENANCE 9
05 PRODUCT NUMBERS 10

Installation, Operation & Maintenance Guide Photo Catalytic Oxidation Series 4
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01 INTRODUCTION
1.1 Disclaimer
These instructions are submitted with the implicit understanding that:
1. This manual is to guide the user of Bioclimatic equipment in the proper installation, operation and maintenance procedures to
insure maximum equipment life with efficient operation.
2. The customer has assigned competent maintenance and operating personnel to the system described herein and will assume
operational and maintenance responsibility upon start-up of the system.
3. The customer will read and thoroughly examine the foregoing instructions and will notify the seller of any points not fully
understood, points of conflict or error.
4. The customer, in lieu of any notification to the contrary, has read and fully understands the operation of the system and
is aware of the hazards of corrosion, abrasion and fire or explosion and shall take the necessary steps in the operation of
equipment to control such hazards to the maximum extent possible.
5. Start-up assistance or field engineering service provided by B.A.S. shall in no way relieve the customer of responsibility for the
proper operation of the system.
1.2 Receiving
Products leaving the B.A.S. factory are inspected and in satisfactory operating condition. All equipment should be thoroughly
inspected when received. Although all units are properly packaged, rough handling in transit can cause breakage. Any shortage
or damage should be reported at once to the transportation company. Note the damage on the bill of lading before signing
for the shipment. No equipment may be returned to Bioclimatic without written authorization. Returned equipment sent
without authorization will be refused and returned to sender.
All products are shipped F.O.B. (Ex Works, FCA) Bioclimatic warehouse. Responsibility for all equipment passes to the buyer at the
time equipment is loaded onto the carrier’s truck.
1.3 Storage
If the UV or UV lamps are not installed upon delivery, it should be stored in a cool, dry, weather protected location. Do not stack
any other equipment on top of the filters.
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IMPORTANT: Any modifications to the unit by unauthorized personnel will void factory warranty.
The unit must be installed in accordance with the manufacturer’s instructions to preserve warranty.

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1.4 Warranty
The seller warrants the equipment against defective workmanship and material for fifteen (15) months from date of factory
shipment or one (1) year from commissioning, whichever occurs first. In the fulfillment of its warranty, the sole obligation of seller
shall be to repair or replace, at its option, F.O.B. its factory, any part or parts which are returned F.O.B. its factory, shipping charges
prepaid, and which after inspection by seller are found to be defective. Buyer shall notify seller of defect in writing, promptly upon
discovery and within the warranty period. This warranty does not cover defects caused by corrosion or normal deterioration; it
does not extend to consequential damage, loss or delay associated with a warranty defect; and it does not cover any cost of labor,
travel, or other expense associated with the repair or replacement of defective parts. Seller assumes no liability for product loss
or other claims whatsoever arising out of the use or application of the equipment in any operations, whether the machine is used
alone or in conjoint use with other equipment or processes. Notwithstanding the foregoing, seller’s warranty obligations with
respect to any items not manufactured by seller shall not exceed the obligations undertaken by the manufacturer thereof under
express warranty to the seller. This express warranty is in lieu of all other warranties of fitness of the machine for any particular
purpose.
There are no other representations, warranty of condition in any respects either expressed or implied, statutory, or otherwise in
contract or tort, other than what is stated above.
The seller shall not be held liable in any way for consequential damages, however caused.
This warranty will not apply if the seller’s equipment has been damaged due to improper installation, alteration, abuse or misuse,
accident, fire, flood, or unavoidable circumstance. Further, this warranty will not apply if repairs, replacements, or alterations are
made by others without the seller’s prior written authorization.
In the event the state in which the equipment is installed does not permit the limitation or exclusion of implied warranties or
conditions under given circumstances, the provisions of this written warranty are in addition to and not a modification of the
statutory warranties and other rights and remedies provided by such laws.
Any modification to original equipment by any company or person other than the manufacturer will serve to cancel and void all of
the seller’s liability under the manufacturer’s warranty. Enclosures containing electronic components are normally sealed by the
manufacturer to prevent unauthorized tampering or adjustments. Only authorized service provides may break seals to complete
calibration or to trouble shoot the unit. Unauthorized tampering or breaking seals will release the seller from any future liability
under the warranty.
Disclaimer: The air purification technologies provided by Clean Air Group are intended to improve indoor air quality. They are
not intended as a replacement for reasonable precautions aimed at preventing the transmission of contaminants, airborne or
otherwise. All persons having access to the serviced premises should comply with applicable public health laws and guidelines
issued by federal, state and local governments and health authorities such as the Centers for Disease Control and Prevention
(CDC). Clean Air Group does not maintain that its products will protect people from all modes of transmission of bacteria, viruses
or other contaminants, and excludes liability for loss or damage arising from any such claims or the consequences arising out of
the application, use or misuse of its products.

Installation, Operation & Maintenance Guide Photo Catalytic Oxidation Series 6
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02 PHOTO CATALYTIC OXIDATION PCO
Photo Catalytic Oxidation or PCO is an effective, environmentally friendly, and low-cost way to remove many harmful and
objectionable contaminants and improve indoor air quality.
The Bioclimatic PCO system is designed to remove many VOCs efficiently and effectively from the air, reduce odors, and
deactivate many microorganisms like bacteria, viruses, and fungi. Air quality is improved by the germicidal effect of the ultraviolet
(UV) light which is an integral part of the system.
Photo Catalytic Oxidation provides multiple air cleaning benefits:
■ Eliminates VOCs
■ Reduces Odors
■ Neutralizes biological contaminants
■ Kills or neutralizes bacteria, viruses, mold, and fungi
■ Enables Energy Savings
A PCO air cleaner uses ultraviolet (UV) light and titanium dioxide (TiO2; a proven efficient, economical, and efficient UV catalyst)
to oxidize and reduce many VOC gases in the air. A catalyst coated surface irradiated with UV light results in a chemical reaction
at the catalytic panel surface. Hydroxyl radicals that are created react with and neutralize volatile organic compounds and kill or
interfere with the life cycle of many viruses and bacteria. Titanium dioxide is proven to be an efficient and economical UV catalyst.
2. PHOTO CATALYTIC OXIDATION (PCO Cleaning Strategies)
Clean Air. We take it for granted and assume that the air we are breathing is healthy, safe and pleasant. Sadly,
that’s usually not the case. Allergens, bacteria, exhaust fumes, industrial chemicals, and thousands of other
pollutants and irritants contaminate our air. Even our own human bio-effluents from crowded public spaces,
schools, commercial buildings, hospitals, casinos, stadiums or other buildings can produce an unpleasant
environment. Bioclimatic can help you create a clean, safe, pleasant environment that can improve health,
productivity, help you generate income, and save on cooling and heating costs.
One of the most recent air cleaning technologies to emerge is Photo Catalytic Oxidation. PCO is an effective,
environmentally friendly and low cost way to remove many harmful and objectionable contaminants and
improve indoor air quality.
The Bioclimatic PCO system is designed to safely and effectively remove many VOCs from the air and improve
indoor air quality and neutralize or deactivate many biologic contaminants like bacteria, viruses, mold and fungi.
Air quality is further improved by the germicidal effect of the ultraviolet (UV) light which is an integral part of
the system. Users of the system may be able to reduce the amount of outside air they need in their HVAC system
while maintaining or improving indoor air quality which leads to significant savings in heating and cooling
energy costs by reducing outside air ventilation.
Photo Catalytic Oxidation provides multiple air cleaning benefits:
•Eliminates VOCs
•Reduces Odors
•Neutralizes biological contaminants
•Kills or neutralizes bacteria, viruses, mold and fungi
•Enables Energy Savings
In its simplest form, a PCO air cleaner uses ultraviolet (UV) light and a titanium dioxide (TiO2) catalyst to
oxidize and reduce many VOC gases in the air. When a surface coated with the catalyst is irradiated with UV
light a chemical reaction takes place at the surface and hydroxyl radicals are formed from water vapor. The
hydroxyl radicals react with and neutralize volatile organic compounds and kill or interfere with the life cycle
of many viruses and bacteria. Titanium dioxide is proven to be an efficient and economical UV catalyst.
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Installation, Operation & Maintenance Guide Photo Catalytic Oxidation Series 7
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2.1 System Structure
The Bioclimatic PCO system is comprised of UV lamps, photo catalytic panels
with a titanium dioxide coating permanently bonded to the panel. The panels
are designed for optimum air cleaning performance. Each PCO panel is a
matrix coated with titanium dioxide catalyst that is designed to maximize the
amount of irradiated surface area exposed to the air flow. The number, size and
configuration of the components are determined by the size of the system and
the contaminants that need to be removed or neutralized.
The base system contains a pre-filter (required to protect the panel and lamps),
a single array of UV lamps, PCO panels, and high efficiency filters (if included)
to remove any particulate matter. A single stage of UV can irradiate up to two
stages of PCO panels.
UV-C (also known as UVGI) lamps are placed are placed approximately 6” from
the catalytic panel to provide maximum air cleaning efficiency. The lamps
are selected and placed to provide a minimum of 1,100 microwatts per square
centimeter across the front of the catalytic panel.
2.2 PCO Panel
The heart of the PCO system is the photo catalytic panel. The panel is a ¾” deep aluminum honeycomb with TiO2 coating that
is permanently bonded to all surfaces of the panel. The panel structure, size and shape are designed to maximize the system air
cleaning and purification capacity while minimizing airflow pressure drop.
■ Each 24” by 24” honeycomb panel has over 10,000 square inches of catalytically active surface to provide the maximum air cleaning
surface. Panels are available in a variety of sizes to fit different systems configurations.
■ The positions of the panel and lights are optimized to maximize the air cleaning catalytic reactions.
■ The Bioclimatic panel is easy to maintain. The panel does not shed or deteriorate. The only maintenance that may be needed is to
occasionally rinse off any accumulated debris.
■ The panel has no moving parts and the bonded TiO2 catalyst is not consumed by the reaction. Properly maintained, the panel can
provide many, many years of service.
■ The panel’s air cleaning efficiency and low cost make it an extremely and efficient air cleaning solution.
2.2 PCO Panel
Photo catalytic Oxidation is a proven air cleaning technology. Independent test results from around the world confirm that
Bioclimatic’s technology produces profound reductions in air pollutants and contaminants.
■ 93.6% reduction in Viruses and Bacteria
■ 80% drop in VOCs
■ Reduces Ozone and Formaldehyde
■ Low Pressure Drop
2.1 System Structure
The Bioclimatic PCO system is comprised of
UV lamps, photocatalytic panels with a titanium
dioxide coating permanently bonded to the
panel, and high efficiency filtration. The panels
are designed for optimum air cleaning
performance. Each PCO panel is a matrix
coated with titanium dioxide catalyst that is
designed to maximize the amount of irradiated
surface area exposed to the air flow. The
number, size and configuration of the
components are determined by the size of the
system and the contaminants that need to be
removed or neutralized.
The base system contains a pre-filter, a single
array of UV lamps and PCO panels, and high
efficiency filters to remove any particulate
matter. A single stage of UV can irradiate two
stages of PCO panels. For more demanding air
cleaning applications additional stages of catalytic panels and UV lamps can be added as required. Some
specific contaminants require additional cleaning technologies to remove or neutralize them.
Bioclimatic’s engineers will help you design a system to address challenging air cleaning requirements.
UV-C lamps with an optimum germicidal wavelength of 254 nanometers are placed are placed
approximately 6” from the catalytic panel to provide maximum air cleaning efficiency. The lamps are
selected and placed to provide a minimum of 1,100 microwatts per square centimeter across the front of
the catalytic panel.
2.2 PCO Panel
The heart of the PCO system is the photo catalytic panel. The panel is a ¾” deep aluminum honeycomb
with TiO2 coating that is permanently bonded to all surfaces of the panel. The panel structure, size and
shape are designed to maximize the system air cleaning and purification capacity while minimizing
airflow pressure drop.
•Each 24” by 24” honeycomb panel has over 10,000 square inches of catalytically active surface to
provide the maximum air cleaning surface. Panels are available in a variety of sizes to fit different
systems configurations.
•The positions of the panel and lights are optimized to maximize the air cleaning catalytic reactions.
•The Bioclimatic panel is easy to maintain. The panel does not shed or deteriorate. The only
maintenance that may be needed is to occasionally rinse off any accumulated debris.
•The panel has no moving parts and the bonded TiO2 catalyst is not consumed by the reaction.
Properly maintained, the panel can provide many, many years of service.
•The panel’s air cleaning efficiency and low cost make it an extremely safe and efficient air cleaning
solution.

Installation, Operation & Maintenance Guide Photo Catalytic Oxidation Series 8
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03 GENERAL INSTALLATION
Install all UV fixtures and molecular filtration elements per manufacturer’s guidelines.
CAUTION: Never Expose Eyes or Skin to UVC – Read all materials before starting or operating this unit.
3.1 Considerations
Improper installation, adjustment, alteration, service, maintenance, or use can cause fire, electrical shock, or other conditions
which may cause personal injury or property damage. Consult a qualified installer, service agency, or your supplier for information
or assistance. The qualified installer or agency must use factory kits or accessories when installing this product. Refer to the
individual instructions packaged with kits or accessories when installing them. Follow all local codes, wear protective glasses, and
work gloves. Read all instructions thoroughly and follow any warnings or cautions attached to any accessed area. Consult local
building codes and the National Electrical Code (NEC) for all applicable requirements.
WARNING: Before installing or servicing, turn of all power — there may be more than one (1) switch.
3.1.1 All access doors/panels shall have an interlock switch that disconnects the power to the UV sub system upon
opening. The interlock switch should be capable of handling a 20-amp lighting load.
3.1.2 An optional window shall be available for each air handler to allow visual inspection of the System during
operation. The viewing window shall be designed to block UV-C light emissions below the threshold limits
specified by NIOSH and/or ACGIH.
3.1.3 Units shall have a warning label applied to the exterior of each section containing UV-C lights.
3.2 Unit Installation
Typical installation is with a duct connection for the entering and leaving air. It is recommended that duct elbows be avoided
within two diameters of the connections to the unit to assure consistent velocity across the panel(s). Unit should be supported
from the base unless provide with factory installed hangers.
3.3 Clearance for Service Access
A minimum of 3 feet of access on the access door/panel side of the unit or as dictated by local code is required for general service.
For units with UV lamps exceeding 3 feet in length it is advisable to provide more space to allow for easy removal of the lamps.

Installation, Operation & Maintenance Guide Photo Catalytic Oxidation Series 9
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04 MAINTENANCE
The PCO panel itself has no moving parts and no electrical connections. The only maintenance the PCO might require is to rinse
off with water if dust accumulates on the panel. This should be an infrequent occurrence since the prefilters will normally remove
most airborne debris. The upstream filters must be maintained properly and replaced as needed as determined by monthly or
quarterly inspections.
A thin layer of contamination will decrease the effectiveness of the UV lamps. At least quarterly use a lint-free cloth soaked in IPA
(isopropyl alcohol) or methylated spirits. Never touch quartz lamps with bare hands. Natural oily deposits left by fingers and
palms create an opaque mark on the lamp thereby reducing the UV transmission. These marks also cause the quartz to break
down, causing premature lamp failure. Use caution when cleaning near the ends of the lamps excessive pressure may remove or
smear the coating protecting the lamp electrodes.
Operating life of the lamps is 10,000 hours. Check the unit mounted hour meter if included. UV output will diminish even if lamp
appears to be functional. Timely replacement is extremely important for proper function. Lamps must be replaced with the
same type and intensity. To retain maximum UV output, rotate the lamp 90 degrees after each cleaning. This prevents the lamp
from sagging and extends the useful life.
CAUTION: If the lamp has wire connectors, do not rotate beyond 360 degrees in one direction. Constant
rotation in the same direction can cause excessive strain on the wire, and premature failure due to a
dislocated connection.

Installation, Operation & Maintenance Guide Photo Catalytic Oxidation Series 10
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05 PRODUCT NUMBERS*
Photo Catalytic Oxidation (PCO)
PCO CASSETTE PCO121201
PCO-202-CP2 PCO122401
PCO-303-CP2 PCO162001
PCO-304-CP2 PCO162501
PCO-305-CP2 PCO182401
PCO-306-CP2 PCO202001
PCO-406-CP2 PCO202401
PCO-407-CP2 PCO242401
PCO-506-CP2
PCO-507-CP2
PCO-508-CP2
PCO-607-CP2
PCO-609-CP2
PCO-610-CP2
PCO-810-CP2
*If your specific model is not listed please contact the factory at:
1-800-394-3458 for operating instructions, safety information and
replacement parts or service.