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APCO® Whole-house air purifiers reduce odor-causing and potentially toxic VOCs, as 

well as biological contaminants including mold, bacteria, viruses, and allergens in 

indoor air. This award-winning technology uses a unique combination UV-C light and 

activated carbon cells to clean the air. 

INSTALLATION INSTRUCTIONS

FAMILY OF

WHOLE-HOUSE

AIR PURIFIERS

IMPORTANT!

•  Only qualified technicians should install this product*
•  Install in accordance with relevant building codes

•  Read instructions carefully including safety warnings

WARNING!

PROTECT EYES FROM UV LIGHT

TURN OFF UNIT OR DISCONNECT

BEFORE SERVICING

© Fresh-Aire UV      

*Installation of this product by anyone other than licensed HVAC or electrical contractors voids warranty.

US patent #7,704,463

RT

Standard

MAG15

MAG11

Air Handler

Optional 

2nd UV Lamp

Filter media

Furnace

Optional 

2nd UV 

Lamp

Humidifier

APCO in return duct with 

light shining away from 

filter media

               
APCO is usually installed on the supply side 

duct just above the air system (upstream of a 

humidifier). It can also be installed on the return 

side if necessary. 
Orient so the air flows past the UV light first 

before the carbon. Position the unit so the UV 

light does not shine directly on non-uv-resistant 

materials (filters, humidifiers, flex duct, etc.). 

Ideally the UV light shines on the coil.
For dual systems select a remote UV light 

location that shines on the greatest surface area 

or the area with the most microbial growth. 

Refer to the Optional Remote UV Light section 

for installation instructions.

Typical Installation Locations

Standard APCO Installation

See back page for lamp replacement Info

Standard APCO Parts List

A

  

Main Unit

B

  

In-D
uc

t A

ir P
uri

f ier

Power Cord (ER Model)

C

  

Duct Mount Plate

D

  

Duct Mount Gasket

Small Parts

E

  

Self-tapping Screws

F

  

Machine Screws  

(for cover) 

G

  

Quick Nut (plastic)

H

  

Tap-in Connector

I

  

Spade Connector

UV Lamps

J

  

PART: TUVL-115   LIFE: 1 Year

K

  

PART: TUVL-215   LIFE: 2 Year

Optional 2nd UV Light (Dual)

V

  

PART: 

TUVL-115P

   LIFE: 

1 Year

W

  

PART: 

TUVL-215P

   LIFE: 

2 Year

X

  

WARNING

Panelsticker 

Y

  

WARNING

Sight Glass 

Z

Magnet mount 

1. Use gasket 

D

 to trace cut-line onto duct. 

2. Cut hole in sheet metal or duct board. 

IMPORTANT!

 

Remove and dispose of 

cut-out piece of material.

3. For sheet metal duct secure mounting plate 

C

 to 

sheet metal ducts using self-tapping screws 

E

.*

4. Remove paper backing from one side of gasket 

and fix gasket to the back of the mounting plate.

5. Remove paper backing from back of gasket then 

fix mounting plate and gasket to the duct.

6. Bend mounting plate flanges around the edges of 

the hole to secure mounting plate. For duct board 

use tape on edges of mounting plate for air leaks 

and additional hold.

STEP 1: Standard APCO Duct Mounting

1. 

4. 

2. 

5. 

6a. 

6b. 

3. 

* To install without backing plate use (4) self-tapping screws.

STEP 2: Standard APCO Power Unit & UV Lamp Mounting

1. 

4. 

2. 

3. 

1. Fit the APCO® Main Unit through hole in duct. 

If attaching directly to metal duct use (4) Self-

tapping Screws. If the Backing Plate is used fit the 

unit over the threaded posts and use (4) Quick 

Nuts 

G

 to secure it.

2. Insert UV Lamp.
3. Mount UV Lamp using (2) Quick Nuts and 

attach lamp connector (be sure to align the four 

connector pins).

4. Attach the cover with machine screws 

F

.

J

K

or

G

F

STEP 3: Standard APCO Connecting to Power

IMPORTANT

Before connecting to power confirm which APCO model is being installed. Turn off main 

power source before installation. Always use proper conduit fittings and terminations.  

Model information is printed on the Power Unit cover.

IMPORTANT! Must be wired to constant power - do not connect to blower relay.

Connect to load side of HVAC

Connect to load side of 24 VAC transformer

APCO

ER/DER

APCO

SI/DI

120-277 VAC

POWER SUPPLY

UV LAMP

4 PIN

CONNECTOR

L1 - BLACK
L2 or N - WHITE

GND - GREEN

Optional 2nd UV Lamp

24 VAC

POWER SUPPLY

UV LAMP

BLACK

BLACK

4 PIN

CONNECTOR

RED

WHITE STRIPE

24 VAC TRANSFORMER

COMMON / BLUE

HOT / RED

Connector

Optional 2nd UV Lamp

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