LENNOX AIR FILTER RACK Commercial Split System Kits and Accessories Instruction Manual
- October 30, 2023
- Lennox
Table of Contents
LENNOX AIR FILTER RACK Commercial Split System Kits and Accessories
Shipping and Packing List
- Package 1 of 1 contains:
- 2 – Top / bottom panels
- 2 – Filter channels
- 1 – Front panel
- 1 – Rear panel
- 1 – Door
- 1 – Filter spring
- 1 – Rear panel filler
- 40 – 50-#10 screws
- 1 – Roll gasket material
- 1 – Installation instructions
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.
CAUTION
As with any mechanical equipment, contact with sharp sheet metal edges can
result in personal injury. Take care while handling this equipment and wear
gloves and protective clothing.
WARNING
Electric Shock Hazard! – Disconnect all power supplies before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
General
The filter rack is shipped compact, and requires minimal assembly. It is
installed on the return air opening on the horizontal flow or upflow unit
depending on the application. The cabinet is designed to house 4″ MERV 8 or
MERV 13 filters, purchased separately
Required Tools
- Electric drill
- Screwdriver
- Gloves for sharp-edge protection
- Foil tape
Unpacking
The cabinet must be unpacked, separated and assembled prior to use.
- Remove all protective packing material from the cabinet components.
- All packing materials should be disposed of properly.
- Separate all the attached panels before beginning assembly of cabinet.
Overview
A) 2 Top / Bottom Panels
B) 2 Filter Channels
C) 1 Front Panel
D) 1 Rear Panel
E) 1 Door
F) 1 Filter Spring
G) 1 Rear Panel Filler
H) 1 Roll Gasket (not shown)
NOTE – The Filter Channels (B) are shipped attached to Top / Bottom Panel
(A).
The Rear Panel Filler (G) is shipped attached to Rear Panel (D).
The Filter Spring (F) is attached to Door (E), Door (E) is attached to Front
Panel (C).
FIGURE 1. Cabinet Components
Filter Cabinet Assembly
The cabinet sections are designed to be attached together. Align the edges as
shown in figure 2.
NOTE – The screws provided to attach the filter rack are used only on one
side. While mounting filter rack on unit, make sure that the side without
screws is flush with the unit
- Place one Top / Bottom Panel A on a firm surface. Align front panel C into one end of side panel A (see figure 2). Attach Panel C to Panel A as shown in figure 2 using provided screws.
- Align and attach rear panel D into Top / Bottom Panel A (see figure 3).
- Align and attach remaining Top / Bottom Panel A into front panel C and rear panel D. Verify that all screws are tight before attaching filter rack to unit.
NOTE – The Filter Channels and Rear Panel Filler are attached to the cabinet after the cabinet is installed on the unit.
Filter Cabinet Installation
- Turn off the unit completely.
- Detach the return air duct attached to the 2 inch filter rack. Remove the 2 inch filter rack attached to the return air opening of the indoor unit.
- Align the 4 inch cabinet with the return air opening on the air handler with the access door opening facing outward.
- Secure the cabinet to the unit using the screws provided.
- Insert Filter Channel (B) into the cabinet and use the provided screws to secure them to the cabinet at both the top and bottom. Insert the Rear Panel Filler (G) and attached it to the Rear Panel with the screws provided.
- Attach the duct to the filter cabinet. Use foil tape to seal all duct joints to prevent dust from entering the air stream.
- Slide the 4 inch filters (ordered separately) into the filter channel.
- Attach the filter spring to the cabinet door and secure the door to the front panel.
- Install provided gasket material on all sides of filter access door and is tall door.
- Restart the unit and check for proper operation.
