Lennox PureAir PCO3S-14-16, PureAir PCO3S-20-16, PureAir PCO3S-16-16 Installation Instructions Manual

AIR CLEANERS / FILTERS

©

2018 Lennox Industries Inc.

Dallas, Texas, USA

INSTALLATION INSTRUCTIONS FOR

MODELS PCO3S-14-16, PCO3S-16-16 AND PCO3S-20-16

THIS MANUAL MUST BE LEFT WITH THE OWNER FOR FUTURE REFERENCE

507785-01
2/2018

PureAir™ S

Air Purication System

CAUTION

UVA Lamp contains mercury.
Ingestion of or contact with mercury or mercury vapor is

hazardous to your health.
Take care when handling UVA lamp. If UVA lamp is broken,

avoid contact with mercury.

WARNING

Electric shock hazard.
Can cause injury or death.
Disconnect all electrical power supplies before servicing.

Access panels must be in place during appliance
operation.

Table of Contents

Shipping and Packing List ...........................................2

Models ...........................................................................2

Application ....................................................................2

Parts Identication .......................................................3

Dimensions and Specications ..................................4

Installation Examples ...................................................6

Unique Field-Supplied Installation Items .....................7

Installation .....................................................................7

Selecting Location .......................................................7

Installing Cabinet .........................................................7

Installing UVA Lamp ....................................................7

Installing UVA Lampholder ..........................................8

Installing Air Filter ........................................................8

Wiring ............................................................................9

Communication Wiring ................................................9

Communication Wiring Routing ...................................9

PureAir S Internal Factory Wiring ................................9

Communicating Control Functions ..........................10

PCO Model (H2) Jumpers .........................................10

Change Lamp Reset (SW1) ......................................10

Change Filter Reset (SW2) .......................................10

Control Manual Reset ...............................................10

Lennox S30 Thermostat Setup ..................................10

System Setup (Commissioning) ................................10

Reminders .................................................................11

Adding PureAir S to Existing System ........................11

Dealer Control Center ................................................11

Notications (Alert Codes) ........................................12

Tests and Diagnostics Function ................................12

Installation Report .....................................................12

Alert Codes .................................................................12

Soft Disable ...............................................................12

Alert Code Types .......................................................13

Operation .....................................................................14

Filter, UVA Lampholder / PCO Cartridge and

UVA Lamp Replacement ............................................15

Annual Maintenance Kits ...........................................15

Replacement Parts .....................................................15

Removing and Installing UVA Lamp,

Lampholder and Air Filter ..........................................15

Proper Clean-Up of Broken UVA Lamp .....................16

Troubleshooting Flow Chart ......................................16

Shipping and Packing List

Assembled PureAir S air purication system which includes:

• Cabinet (1)

• UVA Lampholder / PCO cartridge (secure to interior
of cabinet) (1)

• UVA lamp in box (secure to interior of cabinet) (1)

• Healthy Climate® Carbon Clean 16® Filter (located in
interior of cabinet) (1)

• UVA lamp socket with 4-pin male connector assembly
attached to light ballast electrical connector (1)

• Lennox Communication Control interface.

• Literature bag includes power cord (120VAC)1, instal-

lation instruction, UVA Lamp Socket brass nger nuts

(2), UVA Lampholder / PCO cartridge wing nuts (2)
and warranty.

1

230VAC power cord available separately (part number

91X44).
Check equipment for shipping damage. If damage is found,

immediately contact last carrier.

Models

Table 1. Unit Catalog Numbers

Model Catalog Number

PCO3S-14-16 Y8905

PCO3S-16-16 Y8904

PCO3S-20-16 Y8903

The iComfort S30 Ultra Smart Thermostat will require

rmware version 3.4 or higher to take advantage of all of

the PureAir S features.

New features included are:

• 4-wire connection to Lennox communicating indoor
unit control

• Using sensors to:

> Automatically detect dirty air lter

> Display air lter life percentage

> Monitor UVA lamp operational state (On or Off).

> Display UVA lamp life percentage

IMPORTANT

Oil on metal ducts may cause odors.
Use a mild soap and water solution to remove oils from

transitions and duct surfaces prior to installation.

IMPORTANT

Do not use any form of silicone sealant.
Use of silicone-based products will reduce the

effectiveness of, or damage the titanium dioxide coatings
on the PCO cartridge.

IMPORTANT

Route power cord away from trafc areas where the cord

may become a safety hazard.

Application

The PureAir S air purication system uses photocatalytic
oxidation (PCO) technology to reduce levels of airborne
volatile organic compounds, cooking odors, common
household odors, airborne dust particles, mold spores and
pollen. Each unit may be connected to either 120VAC or
230VAC power supply.

Lab tests conrm a 50% reduction in total volatile organic
compounds (TVOC) within the rst 24 hours of initial

operation of the PureAir S air purication 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 total volatile organic compounds to this
level.

The Healthy Climate® Carbon Clean 16® Filter combines

industry-leading MERV 16 ltration and carbon-coated ber

matrix.
For full feature benets, the PureAir S must be used with

an S30 Ultra Smart Thermostat and communicating indoor
unit.

IMPORTANT

UVA lamp life is shortened when lamp is turned off and on.
Power to unit must remain on at all times.

Do not interlock lamp operation with air handler blower
operation.

CAUTION

Ultraviolet (UVA) radiation risk.
Prolonged exposure may cause skin or eye damage.
Avoid prolonged (weeks) exposure to skin or eyes.

WARNING

Risk of carbon monoxide poisoning.
Can cause injury or death.
Do not operate system unless access panel is in place

and properly secured. Operation of this equipment without
the access panel in place may cause exhaust fumes to be
drawn into occupied spaces.

2

Parts Identication

Power Cord Opening

UVA Lamp Viewer

A

ccess Panel

UVA Lamp

UVA Lamp Light Sensor

UVA Lampholder /
PCO Cartridge

UVA Lampholder /
PCO Cartridge Rear
Mounting Bracket

Healthy Climate Carbon
Clean 16 Air Filter

Cabinet

Communication Control

UVA Lamp Electrical Connector

UVA Lamp Ballast

Figure 1. Parts Identication

CAUTION

Sharp edges hazard.
Sharp edges can cause injuries.
Use protective gloves when grasping equipment edges.

3

Dimensions and Specications

top for bottom.

8-3/4
(222)

11/16

(17)

1-3/4

(33)

1-3/4

(33)

1-5/16 (33)

1-5/16 (33)

INLET AND OUTLET

OPENING

SAME SIZE

A

B

C

D

1

AIR FLOW

Power

Connection

UVA Lamp

Sight Glass

1

NOTE - Airflow may be reversed by rotating the unit

E

Model No.

AB CDE

inches mm inches mm inches mm inches mm inches mm

PCO3S-14-16 23-3/4 603 23 584 20-1/4 51421-1/8537 18-1/2 470

PCO3S-16-16 26-1/2 673 25-3/4 654 23 58417-1/2445 14-5/8 371

PCO3S-20-16 26-1/2 673 25-3/4 654 23 58421-1/8537 18-1/2 470

Dimensions

specifications

Model

PCO3S-14-16 24

PCO3S-16-16 27

PCO3S-20-16 27

Weight

(lbs.)

Electrical

120V, 50/60 Hz, 0.48 Amps

-- Maximum

or

230 V, 50/60 Hz, 0.24 Amps

-- Maximum

Figure 2. Dimensions

Table 2. Specications

Power

Consumption

120VAC and
230VAC - 58

Watts Nominal

0°F to 140°F outside

10 to 60 percent relative

(Optimal performance

at 50 percent relative

Operating

Environment

of duct

humidity

humidity)

Pleated Filter

Efciency

Minimum

Efciency

Rating Value

(MERV) 16

Listings

ETL safety listing
report 3061144A.

Conforms to UL

STD 1598

Certied to CSA

STD C22.2 no.

250.0.

4

Table 3. Approximate Air Flow Resistance

(Cabinet and Filter)

Capacity

(Tons)

Low /

Variable

Low /

Variable

2.5 1000 0.15 0.15 0.11

3.5 1400 0.25 0.25 0.18

4.5 1800 * * 0.27

*Not recommended. Excessive system pressure drop can damage
HVAC system and reduce performance.

Flow Rate

(CFM)

400 0.05 0.04 0.03

600 0.07 0.07 0.06

2 800 0.11 0.11 0.08

3 1200 0.20 0.20 0.15

4 1600 * 0.31 0.22

5 2000 * * 0.31

PCO3S-14-16 PCO3S-16-16 PCO3S-20-16

Pressure Drop (in. w.g.)

IMPORTANT

Do not wash UVA Lampholder / PCO cartridge. Soap and
water will destroy the titanium dioxide catalyst that coats
the cartridge surface.

IMPORTANT

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 discomfort
during this period. If the irritation or discomfort lasts longer
than 48 hours, the homeowner should be advised to
contact a Lennox dealer.

IMPORTANT

The cabinet should be installed so that the UVA lamp will
be in the horizontal position.

IMPORTANT

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 properly
removed PRIOR to installation of the PureAir S air

purication system.

IMPORTANT

Unpacking required.
Remove all protective packing material from the UVA

lamp (taped to the cabinet) and the titanium dioxide PCO
cartridge.

Packing material should be disposed of properly.

IMPORTANT

Healthy Climate® Carbon Clean 16® Filter cannot tolerate
direct exposure to UVA light.

Filter is protected by PCO cartridge shield.

IMPORTANT

This appliance is intended for return air duct installation
only.

Improper installation may damage PureAir S air purication
system, HVAC system, or other equipment and may also
void warranty.

5