AIR CLEANERS / FILTERS
©
2021 Lennox Industries Inc.
Dallas, Texas, USA
Lennox PureAir™
S
Air Purification System
507785-01
6/2021
Supersedes 3/2020
INSTALLATION INSTRUCTIONS FOR
MODELS PCO3S-14-16, PCO3S-16-16 AND PCO3S-20-16
Table of Contents
Shipping and Packing List ...........................................2
Models ...........................................................................2
Application ....................................................................2
Parts Identification, Dimensions and
Specifications
...............................................................3
Installation Examples
...................................................5
Installation .....................................................................6
Unique Field-Supplied Installation Items .....................6
Selecting Location .......................................................6
Installing Cabinet .........................................................6
Installing UVA Lamp ....................................................6
Installing UVA Lampholder ..........................................7
Installing Air Filter ........................................................7
Wiring ............................................................................8
Terminals and Wiring Recommendations ....................8
Communication Wiring Routing ...................................8
PureAir
S
Internal Factory Wiring ................................8
Communicating Control Functions
............................9
PCO Model (H2) Jumpers ...........................................9
THIS MANUAL MUST BE LEFT WITH THE OWNER FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury
or loss of life. Installation and service must be performed
by a licensed professional HVAC installer or equivalent,
service agency, or the gas supplier.
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.
Change Lamp Reset (SW1) ........................................9
Change Filter Reset (SW2) .........................................9
Control Manual Reset .................................................9
Lennox S30 Thermostat Setup
....................................9
System Setup (Commissioning) ..................................9
Reminders ...................................................................9
Adding PureAir
S
to Existing System ........................10
Dealer Control Center
................................................10
Notifications (Alert Codes)
........................................11
Tests and Diagnostics Function ................................11
Installation Report .....................................................11
Alert Codes .................................................................12
Soft Disable ...............................................................12
Alert Code Types .......................................................12
Operation
.....................................................................14
Filter, UVA Lampholder / PCO Cartridge and
UVA Lamp Replacement
............................................14
Annual Maintenance Kits
...........................................14
Replacement Parts
.....................................................14
Removing and Installing UVA Lamp, Lampholder
and Air Filter ..............................................................15
Proper Clean-Up of Broken UVA Lamp .....................15
Troubleshooting Flow Chart
......................................16
IMPORTANT
Do not connect low voltage wiring to the PureAir S until you confirm the S30 thermostat has thermostat / Smart Hub
control software version 03.40.xxxx or higher software.
To update S30 thermostat follow the check for update procedures outlined in service and application note ACC-18-05.
